WO2025170235A1 - Imaging device and electronic device comprising same - Google Patents

Abstract

According to an embodiment of the present disclosure, an imaging device and/or an electronic device including same may comprise: an image sensor; and a lens assembly which includes at least seven lenses aligned along the optical axis and is configured to focus or guide light incident from the outside of the imaging device, to the image sensor. In an embodiment, the at least seven lenses may include: a first lens disposed farthest from the image sensor and having negative refractive power; a second lens disposed between the first lens and the image sensor and having positive refractive power; a third lens disposed between the second lens and the image sensor and having positive refractive power or negative refractive power; a fourth lens disposed between the third lens and the image sensor and having negative refractive power; a fifth lens disposed between the fourth lens and the image sensor and having positive refractive power or negative refractive power; a sixth lens disposed between the fifth lens and the image sensor and having positive refractive power; and a seventh lens disposed between the sixth lens and the image sensor and having negative refractive power. In an embodiment, the lens assembly may satisfy 1.5 < f1/f7 < 2.5, which is a conditional expression related to a focal length 'f1' of the first lens and a focal length 'f7' of the seventh lens. Other various embodiments may also be possible.

Description

Imaging device and electronic device including the same

Embodiments of the present disclosure relate to an imaging device, for example, an imaging device including a plurality of lenses, and an electronic device including the same.

Optical devices, such as cameras capable of capturing images or videos, have been widely used for a long time. Recently, digital cameras and video cameras equipped with solid-state image sensors, such as charge-coupled devices (CCDs) or complementary metal-oxide semiconductors (CMOSs), have become widespread. Optical devices employing solid-state image sensors (CCDs or CMOSs) are gradually replacing film-based optical devices because they facilitate image storage, reproduction, and transfer compared to film-based optical devices.

Recently, multiple optical devices, such as a macro camera, a telephoto camera, and/or a wide-angle camera, are being mounted on a single electronic device to improve the quality of captured images and also to provide various visual effects to the captured images. For example, multiple cameras with different optical characteristics can acquire subject images and synthesize them to obtain a high-quality captured image. As multiple optical devices (e.g., cameras) are mounted to acquire high-quality captured images, electronic devices such as mobile communication terminals and smart phones are gradually replacing electronic devices specialized in capturing functions, such as digital compact cameras, and it is expected that in the future, they will be able to replace high-performance cameras such as digital single-lens reflex cameras (DSLR).

The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art in connection with the present disclosure.

According to one embodiment of the present disclosure, an imaging device and/or an electronic device including the same may include an image sensor, and a lens assembly including at least seven lenses aligned along an optical axis and configured to focus or guide light incident from outside the imaging device onto the image sensor. In one embodiment, the at least seven lenses may include a first lens disposed farthest from the image sensor and having negative refractive power, a second lens disposed between the first lens and the image sensor and having positive refractive power, a third lens disposed between the second lens and the image sensor and having either positive or negative refractive power, a fourth lens disposed between the third lens and the image sensor and having negative refractive power, a fifth lens disposed between the fourth lens and the image sensor and having either positive or negative refractive power, a sixth lens disposed between the fifth lens and the image sensor and having positive refractive power, and a seventh lens disposed between the sixth lens and the image sensor and having negative refractive power. In one embodiment, the lens assembly may satisfy [Conditional Expression 1; 1.5 < f1/f7 < 2.5]. Here, 'f1' may be the focal length of the first lens, and 'f7' may be the focal length of the seventh lens.

According to one embodiment of the present disclosure, an electronic device may include an imaging device as described above, at least one processor, and a memory. In one embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to acquire an image of a subject using the imaging device.

According to one embodiment of the present disclosure, an electronic device may include an imaging device, a processor, and a memory storing instructions that, when executed by the processor, cause the electronic device to acquire an image of a subject using the imaging device. In one embodiment, the imaging device may include an image sensor, and a lens assembly including at least seven lenses aligned along an optical axis, wherein the lens assembly includes at least one aspherical glass lens having a positive refractive power between a first lens farthest from the image sensor and an n-th lens closest to the image sensor among the at least seven lenses. In one embodiment, the lens assembly may be configured to focus or guide light incident from the outside of the imaging device to the image sensor. In one embodiment, the lens assembly may satisfy [Conditional Expression 4; 1.5 < f1/fn < 2.5]. Here, 'f1' may be a focal length of the first lens, and 'fn' may be a focal length of the n-th lens.

The above-described aspects or other aspects, configurations and/or advantages of one embodiment of the present disclosure may be further clarified by the following detailed description taken in conjunction with the accompanying drawings.

FIG. 1 is a block diagram illustrating an electronic device within a network environment according to one embodiment of the present disclosure.

FIG. 2 is a block diagram illustrating a camera module according to one embodiment of the present disclosure.

FIG. 3 is a perspective view showing the front of an electronic device according to one embodiment of the present disclosure.

FIG. 4 is a perspective view showing the rear side of the electronic device illustrated in FIG. 3, according to one embodiment of the present disclosure.

FIG. 5 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 6 is a graph showing spherical aberration of the lens assembly of FIG. 5 according to one embodiment of the present disclosure.

FIG. 7 is a graph showing astigmatism of the lens assembly of FIG. 5 according to one embodiment of the present disclosure.

FIG. 8 is a graph showing the distortion ratio of the lens assembly of FIG. 5 according to one embodiment of the present disclosure.

FIG. 9 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 10 is a graph showing spherical aberration of the lens assembly of FIG. 9 according to one embodiment of the present disclosure.

FIG. 11 is a graph showing astigmatism of the lens assembly of FIG. 9, according to one embodiment of the present disclosure.

FIG. 12 is a graph showing the distortion ratio of the lens assembly of FIG. 9 according to one embodiment of the present disclosure.

FIG. 13 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 14 is a graph showing spherical aberration of the lens assembly of FIG. 13 according to one embodiment of the present disclosure.

FIG. 15 is a graph showing astigmatism of the lens assembly of FIG. 13 according to one embodiment of the present disclosure.

FIG. 16 is a graph showing the distortion ratio of the lens assembly of FIG. 13 according to one embodiment of the present disclosure.

FIG. 17 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 18 is a graph showing spherical aberration of the lens assembly of FIG. 17 according to one embodiment of the present disclosure.

FIG. 19 is a graph showing astigmatism of the lens assembly of FIG. 17 according to one embodiment of the present disclosure.

FIG. 20 is a graph showing the distortion ratio of the lens assembly of FIG. 17 according to one embodiment of the present disclosure.

FIG. 21 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 22 is a graph showing spherical aberration of the lens assembly of FIG. 21 according to one embodiment of the present disclosure.

FIG. 23 is a graph showing astigmatism of the lens assembly of FIG. 21 according to one embodiment of the present disclosure.

FIG. 24 is a graph showing the distortion ratio of the lens assembly of FIG. 21 according to one embodiment of the present disclosure.

FIG. 25 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 26 is a graph showing spherical aberration of the lens assembly of FIG. 25 according to one embodiment of the present disclosure.

FIG. 27 is a graph showing astigmatism of the lens assembly of FIG. 25 according to one embodiment of the present disclosure.

FIG. 28 is a graph showing the distortion ratio of the lens assembly of FIG. 25 according to one embodiment of the present disclosure.

FIG. 29 is a drawing showing an imaging device and/or lens assembly according to one embodiment of the present disclosure.

FIG. 30 is a graph showing spherical aberration of the lens assembly of FIG. 29, according to one embodiment of the present disclosure.

FIG. 31 is a graph showing astigmatism of the lens assembly of FIG. 29, according to one embodiment of the present disclosure.

FIG. 32 is a graph showing the distortion ratio of the lens assembly of FIG. 29 according to one embodiment of the present disclosure.

Throughout the attached drawings, similar reference numbers may be assigned to similar parts, components and/or structures.

Electronic devices are becoming increasingly smaller, and the conditions for securing optical performance when integrating imaging devices such as cameras into these devices are becoming increasingly challenging. For example, while larger lenses can facilitate improved optical performance in imaging devices, these limitations can limit the number and size of lenses available for integration into miniaturized electronic devices. As user demand for even more advanced optical performance increases, the adoption of high-performance image sensors with resolutions exceeding 50 million pixels is increasing. However, miniaturization can present challenges in implementing lens assemblies that are compatible with these high-performance image sensors.

One embodiment of the present disclosure is intended to at least resolve the above-described problems and/or disadvantages and at least provide the advantages described below, and can provide an imaging device having optical performance suitable for a high-pixel and/or large-sized image sensor and/or an electronic device including the same.

One embodiment of the present disclosure can provide an imaging device and/or an electronic device including the same that can suppress performance deviation due to temperature change while having optical performance suitable for a high-pixel and/or large-sized image sensor.

The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present disclosure belongs from the description below.

The following description of the accompanying drawings may provide an understanding of various exemplary implementations of the present disclosure, including the claims and their equivalents. While the exemplary embodiments disclosed in the following description include numerous specific details to aid understanding, they are to be considered as one example of various exemplary embodiments. Accordingly, those skilled in the art will appreciate that various modifications and variations of the various implementations described herein may be made without departing from the scope and spirit of the disclosure. Furthermore, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

The terms and words used in the following description and claims are not limited to their reference meanings and can be used to clearly and consistently describe one embodiment of the present disclosure. Therefore, it will be apparent to those skilled in the art that the following description of various implementations of the disclosure is provided for illustrative purposes, not for the purpose of limiting the scope of the disclosure and its equivalents.

Unless the context clearly dictates otherwise, the singular forms of "a," "an," and "the" should be understood to include plural meanings. Thus, for example, "a component surface" could be understood to include one or more of the surfaces of the component.

FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure. Referring to FIG. 1 , in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of the electronic device (104) or the server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In one embodiment, the electronic device (101) may have at least one of these components (e.g., the connection terminal (178)) omitted, or one or more other components added. In one embodiment, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculation, the processor (120) may store a command or data received from another component (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the command or data stored in the volatile memory (132), and store the resulting data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor), or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include a plurality of artificial neural network layers. The artificial neural network can be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), deep Q-networks, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model can additionally or alternatively include a software structure.

The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).

The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In one embodiment, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.

At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and/or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199). The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

FIG. 2 is a block diagram (200) illustrating a camera module (280) (e.g., camera module (180) of FIG. 1) according to one embodiment of the present disclosure. Referring to FIG. 2, the camera module (280) may include a lens assembly (210), a flash (220), an image sensor (230), an image stabilizer (240), a memory (250) (e.g., a buffer memory), or an image signal processor (260). In one embodiment, the lens assembly (210) may include an image sensor (230). The lens assembly (210) may collect light emitted from a subject that is a target of image capturing. The lens assembly (210) may include one or more lenses. According to one embodiment, the camera module (280) may include a plurality of lens assemblies (210). In this case, the camera module (280) may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies (210) may have the same lens properties (e.g., angle of view, focal length, autofocus, F-number, or optical zoom), or at least one lens assembly may have one or more lens properties that are different from the lens properties of the other lens assemblies. The lens assembly (210) may include, for example, a wide-angle lens or a telephoto lens.

The flash (220) can emit light used to enhance light emitted or reflected from a subject. According to one embodiment, the flash (220) can include one or more light-emitting diodes (e.g., red-green-blue (RGB) LED, white LED, infrared LED, or ultraviolet LED), or a xenon lamp. The image sensor (230) can acquire an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through the lens assembly (210) into an electrical signal. According to one embodiment, the image sensor (230) can include one image sensor selected from among image sensors having different properties, such as, for example, an RGB sensor, a black and white (BW) sensor, an IR sensor, or a UV sensor, a plurality of image sensors having the same property, or a plurality of image sensors having different properties. Each image sensor included in the image sensor (230) can be implemented using, for example, a CCD (charged coupled device) sensor or a CMOS (complementary metal oxide semiconductor) sensor.

The image stabilizer (240) can move at least one lens or image sensor (230) included in the lens assembly (210) in a specific direction or control the operating characteristics of the image sensor (230) (e.g., adjusting the read-out timing, etc.) in response to the movement of the camera module (280) or the electronic device (201) including the same. This allows compensating for at least some of the negative effects of the movement on the captured image. In one embodiment, the image stabilizer (240) can detect such movement of the camera module (280) or the electronic device (e.g., the electronic device (101) of FIG. 1) by using a gyro sensor (not shown) or an acceleration sensor (not shown) disposed inside or outside the camera module (280). In one embodiment, the image stabilizer (240) can be implemented as, for example, an optical image stabilizer. The memory (250) can temporarily store at least a portion of the image acquired through the image sensor (230) for the next image processing task. For example, when image acquisition is delayed due to the shutter, or when multiple images are acquired at high speed, the acquired original image (e.g., a Bayer-patterned image or a high-resolution image) is stored in the memory (250), and a corresponding copy image (e.g., a low-resolution image) can be previewed through the display module (160) of FIG. 1. Thereafter, when a specified condition is satisfied (e.g., a user input or a system command), at least a portion of the original image stored in the memory (250) can be acquired and processed, for example, by the image signal processor (260). According to one embodiment, the memory (250) can be configured as at least a portion of a memory (e.g., the memory (130) of FIG. 1) or as a separate memory that operates independently therefrom.

The image signal processor (260) can perform one or more image processing operations on an image acquired through an image sensor (230) or an image stored in a memory (250). The one or more image processing operations may include, for example, depth map generation, 3D modeling, panorama generation, feature point extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the image signal processor (260) may perform control (e.g., exposure time control, read-out timing control, etc.) on at least one of the components included in the camera module (280) (e.g., image sensor (230)). An image processed by the image signal processor (260) may be stored back in the memory (250) for further processing or provided to an external component of the camera module (280) (e.g., memory (130) of FIG. 1, display module (160), electronic device (102), electronic device (104), or server (108)). According to one embodiment, the image signal processor (260) may include a processor (e.g., 1) may be configured as at least a part of the processor (120) or may be configured as a separate processor that operates independently of the processor (120). When the image signal processor (260) is configured as a separate processor from the processor (120), at least one image processed by the image signal processor (260) may be displayed through the display module (160) as is or after undergoing additional image processing by the processor (120).

According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1) may include a plurality of camera modules (280), each having different properties or functions. In this case, for example, at least one of the plurality of camera modules (280) may be a wide-angle camera, and at least another may be a telephoto camera. Similarly, at least one of the plurality of camera modules (280) may be a front camera, and at least another may be a rear camera.

Electronic devices according to embodiments of the present disclosure may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to embodiments of the present disclosure are not limited to the aforementioned devices.

The embodiments of this document and the terminology used herein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of the present document may be implemented as software (e.g., a program) including one or more instructions stored in a storage medium (e.g., built-in memory or external memory) readable by a machine (e.g., an electronic device). For example, a processor (e.g., a processor) of the machine (e.g., an electronic device) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one instruction called. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, ‘non-transitory’ only means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily in the storage medium.

According to one embodiment, the method according to various embodiments of the present disclosure may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store ^™ ) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

According to embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and placed in other components. According to embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to embodiments, operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

In the detailed description below, the longitudinal direction, the width direction, and/or the thickness direction of the electronic device may be mentioned, and the longitudinal direction may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and/or the thickness direction as the 'Z-axis direction'. In one embodiment, with respect to the direction that a component is oriented, 'negative/positive (-/+)' may be mentioned together with the rectangular coordinate system illustrated in the drawings. For example, the front of the electronic device and/or the housing may be defined as the 'side facing the +Z direction', and the back side may be defined as the 'side facing the -Z direction'. In one embodiment, the side of the electronic device and/or the housing may include a region facing the +X direction, a region facing the +Y direction, a region facing the -X direction, and/or a region facing the -Y direction. In one embodiment, the 'X-axis direction' may mean both the '-X direction' and the '+X direction'. It should be noted that this is based on the rectangular coordinate system illustrated in the drawings for the sake of brevity of description, and that the description of these directions or components does not limit the embodiment(s) of the present disclosure. For example, depending on the design specifications of the electronic device or the user's usage habits, the orthogonal coordinate system may be defined differently from that in the present disclosure.

FIG. 3 is a perspective view showing the front side of an electronic device (300) (e.g., the electronic device (101) of FIG. 1) according to one embodiment of the present disclosure. FIG. 4 is a perspective view showing the rear side of the electronic device (300) illustrated in FIG. 3 according to one embodiment of the present disclosure.

Referring to FIGS. 3 and 4 , an electronic device (300) according to one embodiment (e.g., the electronic device (101) of FIG. 1 ) may include a housing (310) that includes a first side (or front side) (310A), a second side (or back side) (310B), and a side surface (310C) that surrounds a space between the first side (310A) and the second side (310B). In one embodiment (not shown), the housing (310) may also refer to a structure that forms a portion of the first side (310A), the second side (310B), and the side surface (310C) of FIG. 3 . According to one embodiment, the first side (310A) may be formed by a front plate (302) that is at least partially substantially transparent (e.g., a glass plate or a polymer plate including various coating layers). In one embodiment, the front plate (302) may be coupled to the housing (310) to form an internal space together with the housing (310). In one embodiment, the term “internal space” may refer to an internal space of the housing (310) that accommodates at least a portion of the display (301) described below or the display module (160) of FIG. 1.

In one embodiment, the second side (310B) may be formed by a substantially opaque back plate (311). The back plate (311) may be formed of, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the foregoing materials. The side surface (310C) may be formed by a side bezel structure (or “side member”) (318) that is coupled to the front plate (302) and the back plate (311) and comprises a metal and/or a polymer. In one embodiment, the back plate (311) and the side bezel structure (318) may be formed integrally and comprise the same material (e.g., a metal material such as aluminum).

In the illustrated embodiment, the front plate (302) may include two first regions (310D) that extend seamlessly from the first surface (310A) toward the rear plate (311), at both ends of a long edge of the front plate (302). In the illustrated embodiment (see FIG. 4), the rear plate (311) may include two second regions (310E) that extend seamlessly from the second surface (310B) toward the front plate (302), at both ends of a long edge. In one embodiment, the front plate (302) (or the rear plate (311)) may include only one of the first regions (310D) (or the second regions (310E)). In one embodiment, some of the first regions (310D) or some of the second regions (310E) may not be included. In the above embodiments, when viewed from the side of the electronic device (300), the side bezel structure (318) may have a first thickness (or width) on a side that does not include the first region (310D) or the second region (310E) (e.g., a side where the connector hole (308) is formed), and may have a second thickness that is thinner than the first thickness on a side that includes the first region (310D) or the second region (310E) (e.g., a side where the key input device (317) is arranged).

According to one embodiment, the electronic device (300) may include at least one of a display (301), an audio module (303, 307, 314), a sensor module (304, 316, 319), a camera module (305, 312, 313) (e.g., the camera module (180, 280) of FIG. 1 or 2), a key input device (317), a light-emitting element (306), and a connector hole (308, 309). In one embodiment, the electronic device (300) may omit at least one of the components (e.g., the key input device (317) or the light-emitting element (306)) or may additionally include other components.

The display (301) (e.g., the display module (160) of FIG. 1) may be visually exposed, for example, through a substantial portion of the front plate (302). In one embodiment, at least a portion of the display (301) may be visually exposed through the front plate (302) forming the first surface (310A) and the first area (310D) of the side surface (310C). In one embodiment, the corners of the display (301) may be formed to be substantially identical to the adjacent outer shape of the front plate (302). In one embodiment (not shown), in order to expand the area in which the display (301) is visually exposed, the gap between the outer edge of the display (301) and the outer edge of the front plate (302) may be formed to be substantially identical.

In one embodiment (not shown), a recess or opening may be formed in a portion of a screen display area (e.g., an active area) or an area outside the screen display area (e.g., an inactive area) of the display (301), and at least one of an audio module (314) (e.g., an audio module (170) of FIG. 1), a sensor module (304) (e.g., a sensor module (176) of FIG. 1), a camera module (305), and a light-emitting element (306) may be included aligned with the recess or opening. In one embodiment (not shown), at least one of an audio module (314), a sensor module (304), a camera module (305) (e.g., an under display camera (UDC)), a fingerprint sensor (316), and a light-emitting element (306) may be included on a back surface of the screen display area of the display (301). In one embodiment (not shown), the display (301) may be coupled to or disposed adjacent to a touch sensing circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and/or a digitizer capable of detecting a magnetic field-type stylus pen. In one embodiment, at least a portion of the sensor modules (304, 319) and/or at least a portion of the key input device (317) may be disposed in the first areas (310D) and/or the second areas (310E).

The audio module (303, 307, 314) may include a microphone hole (303) and a speaker hole (307, 314). The microphone hole (303) may have a microphone disposed inside to acquire external sound, and in one embodiment, multiple microphones may be disposed to detect the direction of the sound. The speaker hole (307, 314) may include an external speaker hole (307) and a receiver hole (314) for calls. In one embodiment, the speaker hole (307, 314) and the microphone hole (303) may be implemented as a single hole, or a speaker may be included without the speaker hole (307, 314) (e.g., a piezo speaker).

The sensor modules (304, 316, 319) can generate electrical signals or data values corresponding to the internal operating state of the electronic device (300) or the external environmental state. The sensor modules (304, 316, 319) may include, for example, a first sensor module (304) (e.g., a proximity sensor) and/or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on a first surface (310A) of the housing (310), and/or a third sensor module (319) (e.g., an HRM sensor) and/or a fourth sensor module (316) (e.g., a fingerprint sensor) disposed on a second surface (310B) of the housing (310). The fingerprint sensor may be disposed on the first surface (310A) (e.g., the display (301)) of the housing (310) as well as the second surface (310B). The electronic device (300) may further include at least one of a sensor module not shown, for example, a gesture sensor, a gyro sensor, a pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

The camera module (305, 312, 313) may include a first camera device (305) disposed on a first side (310A) of the electronic device (300), and a second camera device (312) and/or a flash (313) disposed on a second side (310B). The camera module (305, 312) may include one or more lenses, an image sensor, and/or an image signal processor. The flash (313) may include, for example, a light-emitting diode or a xenon lamp. In one embodiment, two or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be disposed on one side of the electronic device (300).

The key input device (317) may be disposed on a side surface (310C) of the housing (310). In one embodiment, the electronic device (300) may not include some or all of the above-mentioned key input devices (317), and the key input devices (317) that are not included may be implemented in other forms, such as soft keys, on the display (301). In one embodiment, the key input device may include a sensor module (316) disposed on a second surface (310B) of the housing (310).

The light-emitting element (306) may be disposed, for example, on the first surface (310A) of the housing (310). The light-emitting element (306) may provide, for example, status information of the electronic device (300) in the form of light. In one embodiment, the light-emitting element (306) may provide a light source that is linked to the operation of, for example, the camera module (305). The light-emitting element (306) may include, for example, an LED, an IR LED, and a xenon lamp.

The connector holes (308, 309) may include a first connector hole (308) that can accommodate a connector (e.g., a USB connector) for transmitting and receiving power and/or data with an external electronic device, and/or a second connector hole (e.g., an earphone jack) (309) that can accommodate a connector for transmitting and receiving audio signals with an external electronic device.

In examining the embodiments below, reference may be made to the electronic devices (101, 102, 104, 300) and/or camera modules (180, 280, 305, 312, 313) of the embodiments described above. The imaging devices (400, 500, 600, 700, 800, 900, 1000) of the embodiments described below may implement at least a part or all of the camera modules (180, 280, 305, 312, 313) described above.

FIG. 5 is a diagram illustrating an imaging device (400) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 6 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 5 according to an embodiment of the present disclosure. FIG. 7 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 5 according to an embodiment of the present disclosure. FIG. 8 is a graph illustrating a distortion ratio of the lens assembly (LA) of FIG. 5 according to an embodiment of the present disclosure.

FIG. 6 is a graph showing spherical aberration of an imaging device (400) and/or a lens assembly (LA) according to one embodiment of the present disclosure, in which the horizontal axis represents a coefficient of longitudinal spherical aberration, the vertical axis represents a normalized distance from the optical axis, and the change in longitudinal spherical aberration according to the wavelength of light is shown. The longitudinal spherical aberration is shown for light having wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), and 486.1300 (NM), respectively. FIG. 7 is a graph showing astigmatism of an imaging device (400) and/or a lens assembly (LA) according to an embodiment of the present disclosure, for light having a wavelength of 587.5600 nm, where 'S' exemplifies a sagittal plane with a solid line and 'T' exemplifies a tangential plane (or meridional plane) with a dotted line. FIG. 8 is a graph showing a distortion rate of an imaging device (400) and/or a lens assembly (LA) according to an embodiment of the present disclosure, for light having a wavelength of 587.5600 nm. The refractive index of the lens(es) mentioned in the embodiment described below may refer to the refractive index for light having a wavelength of approximately 587.5600 nm.

Referring to FIGS. 5 to 8, an imaging device (400) according to one embodiment of the present disclosure (e.g., lens assembly (210) of FIG. 2) may include an image sensor (I, 230) and a lens assembly (LA). The lens assembly (LA) may include, for example, at least seven lenses (L1, L2, L3, L4, L5, L6, L7) aligned along an optical axis (O). For example, the lens assembly (LA) may focus or guide light incident from outside the imaging device (400) to the image sensor (I, 230). In one embodiment, at least one of the lenses (L1, L2, L3, L4, L5, L6, L7) may be a lens made of plastic. For example, within a range satisfying the condition(s) described below, at least one of the lenses (L1, L2, L3, L4, L5, L6, L7) may be made of plastic. By being made of plastic, manufacturing time or manufacturing cost may be reduced, and/or the lenses (L1, L2, L3, L4, L5, L6, L7) may be easily manufactured into a designed shape. In one embodiment, by being made of glass, at least one of the lenses (L1, L2, L3, L4, L5, L6, L7) may suppress performance deviation of the lens assembly (LA) due to temperature change.

According to one embodiment, at least one of the lenses disposed between the lens farthest from the image sensor (I, 230) (e.g., the first lens (L1)) and the lens closest to the image sensor (I, 230) (e.g., the n-th lens or the seventh lens (L7)) may be a glass lens. In order to suppress performance deviation of the lens assembly (LA) due to temperature change, at least one of the lenses disposed between the lens farthest from the image sensor (I, 230) (e.g., the first lens (L1)) and the lens closest to the image sensor (I, 230) (e.g., the n-th lens or the seventh lens (L7)) may be a glass lens having positive refractive power. In one embodiment, when at least one of the lenses positioned between the lens furthest from the image sensor (I, 230) (e.g., the first lens (L1)) and the lens closest to the image sensor (I, 230) (e.g., the n-th lens or the seventh lens (L7)) is a glass lens having positive refractive power and includes an aspherical surface, it may be useful for stabilizing optical performance, such as field curvature or aberration control, while suppressing performance deviation of the lens assembly (LA) depending on temperature.

According to one embodiment, the lenses (L1, L2, L3, L4, L5, L6, L7) may be sequentially arranged along the optical axis (O) in a direction from the subject (obj) side toward the image sensor (I, 230). For example, the lenses (L1, L2, L3, L4, L5, L6, L7) may be arranged substantially aligned with the image sensor (I, 230) along the optical axis (O). In the embodiment described below, the ordinal numbers, 'first', 'second', 'third', 'fourth', 'fifth', 'sixth', and 'seventh', assigned to the lenses (L1, L2, L3, L4, L5, L6, L7) may refer to the arrangement order from the subject (obj) side. For example, the lens farthest from the image sensor (I, 230) (or the first lens on the object (obj) side) may be referred to as the first lens (L1), and the lens closest to the image sensor (I, 230) (or the first lens on the image sensor (I, 230) side) may be referred to as the n-th lens. When the imaging device (400) and/or the lens assembly (LA) includes seven lenses, the n-th lens may be understood to be the seventh lens (L7). In one embodiment, in the imaging device (400) and/or the lens assembly (LA), an aperture stop (or stop) may be disposed between the first lens (L1) and the third lens (L3). In the illustrated embodiment, the aperture stop may be understood to be disposed between the second lens (L2) and the third lens (L3).

According to one embodiment, an optical component such as an infrared cut filter (F) may be disposed between at least one of seven lenses (L1, L2, L3, L4, L5, L6, L7) and the image sensor (I, 230). The infrared cut filter (F) may suppress or block light (e.g., infrared) of a wavelength that is not visible to the naked eye of a user but is detected by a photosensitive material of a film or the image sensor (I, 230) from entering the image sensor (I, 230). The infrared cut filter (F) may be disposed between the nth lens (e.g., the seventh lens (L7)) and the image sensor (I, 230). Depending on the intended use of the imaging device (400), the infrared cut filter (F) may be replaced with a bandpass filter that transmits infrared light and suppresses or blocks visible light. In one embodiment, the infrared blocking filter (F) may be implemented by a coating material disposed on the surface of any one of the lenses (L1, L2, L3, L4, L5, L6, L7).

In one embodiment, the phrase “aligned along the optical axis (O)” or “aligned to the optical axis (O)” may refer to the alignment of the optical axes of the respective lenses (L1, L2, L3, L4, L5, L6, L7) or the optical axes of the image sensor (I, 230) (e.g., the imaging plane (img)) to coincide with each other. The imaging plane (img) may receive or detect light aligned or focused by, for example, the lenses (L1, L2, L3, L4, L5, L6, L7). For example, the imaging plane (img) may be understood as an active area of the image sensor (I, 230). A processor (e.g., the processor (120) of FIG. 1) may acquire an image of a subject (obj) by detecting light focused or guided by the lens assembly (LA) using the image sensor (I, 230). In one embodiment, a processor (e.g., processor (120) of FIG. 1) can perform a focus adjustment operation and/or a focal length adjustment operation by linearly moving at least one of lenses (L1, L2, L3, L4, L5, L6, L7) along the optical axis (O) with respect to an image sensor (I, 230). In one embodiment, the processor can cause an electronic device (e.g., electronic device (101, 102, 104, 300) of FIGS. 1, 3, and/or 4) to receive or detect external light (e.g., subject image) using the image sensor (I, 230) by executing at least a part of command(s) stored in a memory (e.g., memory (130) of FIG. 1). For example, the memory may store instruction(s) causing the electronic device to receive at least a portion of light focused by the image sensor (I, 230) and/or instruction(s) causing the electronic device to acquire an image of a subject based on the received light, and such instruction(s) may be executed by the processor.

In the embodiments described below, although some of the reference numerals assigned to the lens surfaces illustrated in the drawings are not directly mentioned, those skilled in the art will be able to easily understand the configuration of each lens (L1, L2, L3, L4, L5, L6, L7) or lens surfaces based on the lens data presented through the [Tables] described below. In the embodiments described below, the stop is generally illustrated as being positioned between the second lens (L2) and the third lens (L3), but it should be noted that the embodiments of the present disclosure are not limited thereto.

Reference numerals for lens surfaces omitted in the drawings may be applied to configurations of different embodiments, and can be easily understood through the [Tables] described below regarding lens data of each embodiment. In the detailed description of the embodiment(s) of the present disclosure, the term "concave" or "convex" with respect to the subject-side surface or the sensor-side surface of the lenses (L1, L2, L3, L4, L5, L6, L7) without other mention may refer to the shape of the lens surface at a point intersecting the optical axis (O) or in a paraxial region intersecting the optical axis (O). The shape referred to as "concave" may refer to a shape in which the lens surface forms a curved surface in such a way that the lens thickness decreases as it approaches the optical axis (O) in the paraxial region. The shape referred to as "convex" may refer to a shape in which the lens surface forms a curved surface in such a way that the lens thickness increases as it approaches the optical axis (O) in the paraxial region.

In addition, in the detailed description below, values for the radius of curvature, radius, effective focal length (f), OAL (total track length), air gap, or thickness of the lenses (L1, L2, L3, L4, L5, L6, L7) of the present disclosure may all have units of mm unless otherwise specified, and the field of view (FOV) (or half angle of view) may have units of degrees. In addition, the radius of curvature, radius, effective focal length, OAL, air gap, or thickness of the lenses (L1, L2, L3, L4, L5, L6, L7) may be a distance measured from the optical axis (O) (e.g., a distance measured from a point where the optical axes (O) intersect).

According to one embodiment, among the lenses (L1, L2, L3, L4, L5, L6, L7), the lens disposed first from the object side, for example, the first lens (L1) disposed farthest from the image sensor (I, 230), may have negative refractive power. In one embodiment, the first lens (L1) may include a sensor-side surface (S2) having a concave shape. In one embodiment, the first lens (L1) may be a plastic lens or a glass lens. For example, when the first lens (L1) is manufactured as a plastic lens, manufacturing or mass production in a designed shape may be easy, and when manufactured as a glass lens, performance deviation due to temperature change may be suppressed.

According to one embodiment, among the lenses (L1, L2, L3, L4, L5, L6, L7), the second lens (L2) disposed second from the subject (obj) side, for example, disposed between the first lens (L1) and the image sensor (I, 230), may have positive refractive power. In one embodiment, the second lens (L2) may include a subject-side surface (S3) having a convex shape. In one embodiment, the second lens (L2) is a lens having positive refractive power and is disposed between the first lens and the n-th lens (e.g., the seventh lens (L7)), and is made of a glass lens, thereby suppressing performance deviation of the lens assembly (LA) due to temperature change. In one embodiment, the second lens (L2) can stabilize the optical performance of the lens assembly (LA) by suppressing field curvature by implementing at least one of the subject-side surface (S3) and the sensor-side surface (S4) as an aspherical surface.

According to one embodiment, the third lens (L3) is disposed third from the subject (obj) side, for example, between the second lens (L2) and the image sensor (I, 230), and may have positive refractive power or negative refractive power. In one embodiment, when the third lens (L3) has positive refractive power, the third lens (L3) may be a glass lens and include an aspherical surface. For example, in order to suppress performance deviation of the lens assembly (LA) due to temperature change or to stabilize optical performance, the third lens (L3) may be a glass lens that includes an aspherical surface and have positive refractive power.

According to one embodiment, the fourth lens (L4) is positioned fourth from the object (obj) side, for example, between the third lens (L3) and the image sensor (I, 230), and may have negative refractive power. In one embodiment, the fourth lens (L4) may include a concave sensor-side surface (S9). When having negative refractive power, the fourth lens (L4) may be a plastic lens. In one embodiment, the fourth lens (L4) may be a glass lens.

According to one embodiment, the fifth lens (L5) disposed between the fourth lens (L4) and the image sensor (I, 230) may have positive refractive power or negative refractive power. In one embodiment, the fifth lens (L5) may include a convex sensor-side surface (S11). In one embodiment, when the fifth lens (L5) has positive refractive power, the fifth lens (L5) may be a glass lens including an aspherical surface. In one embodiment, when at least one of the second lens (L2) and the third lens (L3) is a glass lens having positive refractive power and including an aspherical surface, the refractive power or material of the fifth lens (L5) may be implemented differently from those mentioned above. For example, when at least one of the lenses disposed between the first lens (L1) and the n-th lens (e.g., the seventh lens (L7)) is a glass lens having positive refractive power and including an aspherical surface, the refractive power or material of the remaining lenses may be appropriately selected in consideration of the specifications or manufacturing cost of the lens assembly (LA).

According to one embodiment, the sixth lens (L6) disposed between the fifth lens (L5) and the image sensor (I, 230) may have a positive refractive power. When having a positive refractive power, the sixth lens (L6) may be a glass lens including an aspherical surface. In one embodiment, when at least one of the second lens (L2), the third lens (L3) and/or the fifth lens is a glass lens having a positive refractive power and including an aspherical surface, the material of the sixth lens (L6) may be implemented differently from that mentioned above. For example, when at least one of the lenses disposed between the first lens (L1) and the n-th lens (e.g., the seventh lens (L7)) is a glass lens having a positive refractive power and including an aspherical surface, the refractive power or material of the remaining lenses may be appropriately selected in consideration of the specifications or manufacturing cost of the lens assembly (LA).

In one embodiment, the seventh lens (L7) (or the nth lens disposed closest to the image sensor (I, 230)) disposed between the sixth lens (L6) and the image sensor (I, 230) may include a concave sensor-side surface (S15) having negative refractive power. In one embodiment, an infrared cut filter (F) may be disposed between the seventh lens (L7) and the image sensor (I, 230). As mentioned above, the infrared cut filter (F) may block light in a wavelength band that is not detectable by the naked eye of a user, but is detected by a photosensitive material or the image sensor (I, 230). In one embodiment, when the imaging device (400) functions as a camera (e.g., a depth camera) that detects light in the infrared wavelength band, the infrared cut filter (F) may be replaced with a bandpass filter, and/or may be implemented as a coating material disposed on a lens surface of any one of the lenses (L1, L2, L3, L4, L5, L6, L7).

According to one embodiment, the lens assembly (LA) can satisfy the condition presented by the following [Mathematical expression 1].

Here, 'f1' may be the focal length of the lens (e.g., the first lens (L1)) farthest from the image sensor (I, 230), and 'fn' may be the focal length of the lens closest to the image sensor (I, 230). When the lens assembly (LA) includes seven lenses (L1, L2, L3, L4, L5, L6, L7), 'fn' may refer to the focal length of the seventh lens (L7).

According to one embodiment, [Mathematical Formula 1] presents the ratio of the focal lengths of the first lens on the subject (obj) side and the first lens on the image sensor (I, 230) side. When the calculated value by [Mathematical Formula 1] is less than 1.5, the effective diameter of the first lens (L1) may increase, making it difficult to mount it in a miniaturized electronic device. In one embodiment, when the calculated value by [Mathematical Formula 1] is greater than 2.5, the refractive power of the n-th lens (e.g., the seventh lens (L7)) may weaken, making it difficult to suppress distortion aberration. For example, by satisfying the condition of [Mathematical Formula 1], the lens assembly (LA) can be miniaturized while ensuring stable aberration control performance. In one embodiment, the calculated value by [Mathematical Formula 1] may be greater than approximately 1.6 and less than approximately 2.35.

According to one embodiment, the lens assembly (LA) can satisfy the condition presented by the following [Mathematical Formula 2].

Here, 'R6' may be the radius of curvature of the subject-side surface (S6) of the third lens (L3), and 'R7' may be the radius of curvature of the sensor-side surface (S7) of the third lens (L3). For example, [Mathematical Formula 2] may be understood as presenting a condition regarding the radius of curvature of the subject-side surface (S6) and the sensor-side surface (S7) of the third lens (L3). As mentioned above, the radius of curvature may refer to the radius of curvature at the point where the optical axis (O) intersects the subject-side surface (S6) or the sensor-side surface (S7). In one embodiment, the third lens (L3) may be a glass lens that satisfies the condition of [Mathematical Formula 2], has positive refractive power, and includes an aspherical surface.

According to one embodiment, when the calculated value of [Mathematical Expression 2] is less than 1.5, the refractive power of the third lens (L3) may increase and the radius of curvature of the sensor-side surface (S7) may decrease. In this case, spherical aberration or field curvature may increase, thereby deteriorating the optical performance of the lens assembly (LA). In one embodiment, when the calculated value of [Mathematical Expression 2] is greater than 3.5, the radius of curvature of the subject-side surface (S6) of the third lens (L3) may decrease and coma aberration may increase. For example, when the condition presented through [Mathematical Expression 2] is satisfied, the optical performance of the lens assembly (LA) with respect to aberration control or field curvature may be stabilized. In one embodiment, the calculated value of [Mathematical Expression 2] may be greater than approximately 1.75 and less than approximately 3.0.

According to one embodiment, the lens assembly (LA) can satisfy the condition presented by the following [Mathematical Formula 3].

Here, 'f4' may be the focal length of the fourth lens (L4), and 'f5' may be the focal length of the fifth lens (L5). For example, [Mathematical Expression 3] may present conditions regarding the focal lengths of the fourth lens (L4) and the fifth lens (L5). In one embodiment, when the calculated value of [Mathematical Expression 3] is less than 0.8, it may be difficult to control the distortion aberration caused by the fifth lens (L5), and when it is greater than 2.0, coma or astigmatism may increase. For example, by satisfying the condition of [Mathematical Expression 3], the aberration control of the lens assembly (LA) may be facilitated. In one embodiment, the calculated value of [Mathematical Expression 3] may be approximately 0.85 or more and approximately 1.8 or less.

In the embodiment described below, among the lenses arranged between the first lens and the n-th lens (e.g., the seventh lens (L7)), the second lens, the third lens, the fifth lens, and/or the sixth lens may have positive refractive power. In one embodiment, at least one of the second lens, the third lens, the fifth lens, and/or the sixth lens may be a glass lens having positive refractive power. For example, in suppressing performance deviation due to temperature change, at least one of the second lens, the third lens, the fifth lens, and/or the sixth lens may be a glass lens having positive refractive power. In one embodiment, at least one of the second lens, the third lens, the fifth lens, and/or the sixth lens is made of a glass lens having positive refractive power and including an aspherical surface, thereby facilitating control of optical performance such as aberration control or field curvature. In one embodiment, at least one of the at least seven lenses (L1, L2, L3, L4, L5, L6, L7) (e.g., the first lens (L1), the fourth lens (L4), and/or the seventh lens (L7)) may be a plastic lens. For example, in order to reduce manufacturing costs while stabilizing the optical performance of the lens assembly (LA), at least one of the at least seven lenses (L1, L2, L3, L4, L5, L6, L7) may be manufactured as a plastic lens.

According to one embodiment, the lens assembly (LA) as described above can be easily miniaturized by satisfying the above-described conditions while being implemented with approximately seven lenses (L1, L2, L3, L4, L5, L6, L7). In one embodiment, when the lens assembly (LA) satisfies the above-described conditions, optical performance such as aberration control or field curvature can be improved or stabilized. In one embodiment, the lens assembly (LA) as described above can implement an angle of view of approximately 110 degrees or more and approximately 130 degrees or less, and at least one of the lens(es) having a defined refractive power in the lens assembly (LA) is manufactured as a glass lens, so that deviation in optical performance due to temperature change can be suppressed. In one embodiment, the lens assembly (LA) can provide wide-angle or ultra-wide-angle performance suitable for a high-performance image sensor (I, 230) including pixels having a size of 0.7 μm or less.

According to one embodiment, the imaging device (400) and/or its lens assembly (LA) can have a focal length of approximately 2.16 mm, an F-number of approximately 2.23, and an angle of view of approximately 122.6 degrees. In one embodiment, the imaging device (400) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), and can be manufactured with the specifications exemplified in the following [Table 1]. In [Table 1], the symbol '*' attached to the reference number of the lens surface may refer to an aspherical lens surface.

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -3.691 0.394 -4.23 1.544 55.9 S2* 6.352 0.790 S3* 1.931 0.253 10.54 1.567 37.4 S4* 2.717 0.410 stop infinity 0.072 S6* 5.772 0.570 3.17 1.619 63.9 S7* -2.862 0.404 S8* 3.970 0.180 -8.82 1.661 20.4 S9* 2.319 0.050 S10* 8.683 0.690 5.04 1.544 55.9 S11* -3.895 0.030 S12* -3.619 0.697 1.97 1.544 55.9 S13* -0.882 0.039 S14* 2.298 0.413 -1.81 1.614 26.0 S15* 0.699 0.529 S16 infinity 0.110 infinity 1.517 64.2 S17 infinity 0.698 img infinity 0

[Table 2], [Table 3], and [Table 4] below list the aspherical coefficients of lenses (L1, L2, L3, L4, L5, L6, L7), and the definition of aspherical is as follows [Mathematical Formula 4].

In [Mathematical Formula 9], “x” is the distance in the direction of the optical axis (O) from the point where the optical axis (O) passes on the lens surface, “y” is the distance from the optical axis (O) in the direction perpendicular to the optical axis (O), ‘R’ represents the radius of curvature at the vertex of the lens, ‘k’ represents the conic constant, and ‘Ai’ represents the aspherical coefficient, which can be written as ‘A’, ‘B’, ‘C’, ‘D’, ‘E’, ‘F’, ‘G’, ‘H’, ‘J’, ‘K’, ‘L’, ‘M’, ‘N’, and ‘O’ in the [Table] described below.

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -3.69109E+00 6.35225E+00 1.93083E+00 2.71711E+00 5.77226E+00 k(Conic) -5.45101E+01 6.88762E+00 -5.68120E+00 -4.51762E+00 -2.70611E+01 A(4th)/C4 6.97629E-03 6.11725E-01 -6.80937E-02 1.94816E-04 1.15692E-03 B(6th)/C5 -1.66875E-04 -2.40855E-01 -2.38430E-03 -3.72762E-04 -1.40344E-04 C(8th)/C6 4.42323E-06 5.06468E-02 6.06650E-03 1.27861E-04 -6.10526E-06 D(10th)/C7 -9.39149E-08 -3.74991E-03 -6.70128E-04 9.09528E-06 -2.31501E-06 E(12th)/C8 1.42063E-09 -3.53583E-04 -3.60897E-04 4.96039E-06 4.46512E-07 F(14th)/C9 -1.39943E-11 -1.69452E-03 6.60089E-05 -2.82875E-06 -1.68229E-08 G(16th)/C10 7.98385E-14 9.37358E-04 3.44759E-05 8.24378E-07 0.00000E+00 H(18th)/C11 -4.63710E-16 -1.89779E-05 -1.07733E-05 -1.20469E-07 0.00000E+00 J(20th)/C12 -3.39274E-16 -6.85667E-05 8.68245E-07 7.35111E-09 0.00000E+00 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.86153E+00 3.97008E+00 2.31853E+00 8.68279E+00 -3.89509E+00 k(Conic) -3.09892E-01 -1.14819E+01 -2.21605E+01 -1.47373E+01 -4.32349E-01 A(4th)/C4 -9.10269E-02 -3.25020E-02 -1.03924E-02 -4.36348E-03 -3.45791E-03 B(6th)/C5 -2.13435E-03 5.10684E-04 -1.74066E-04 -3.78582E-05 -2.43081E-04 C(8th)/C6 -2.15671E-04 -1.23507E-04 3.47811E-05 5.18774E-05 8.57456E-05 D(10th)/C7 3.36736E-05 3.06638E-05 3.99756E-07 -6.60690E-06 -6.71538E-06 E(12th)/C8 3.71801E-06 -5.68339E-06 -3.70059E-07 4.53449E-07 -1.50295E-07 F(14th)/C9 7.91190E-06 7.63881E-07 3.88908E-08 -1.97165E-08 6.14436E-08 G(16th)/C10 0.00000E+00 -6.56737E-08 -2.19463E-09 5.76127E-10 -4.82712E-09 H(18th)/C11 0.00000E+00 3.05644E-09 7.13883E-11 -1.15799E-11 2.03348E-10 J(20th)/C12 0.00000E+00 -5.70531E-11 -1.23465E-12 1.60402E-13 -5.17536E-12 K(22th)/C13 0.00000E+00 0.00000E+00 8.65277E-15 -1.50398E-15 7.97622E-14 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 1.13875E-17 -3.14355E-16 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 2.34925E-18 3.31603E-16 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 9.89334E-19 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -3.61872E+00 -8.81533E-01 2.29796E+00 6.99281E-01 k(Conic) -1.09049E+00 -2.29230E+00 -4.16084E+01 -5.24935E+00 A(4th)/C4 2.85992E-03 9.95270E-03 -1.70448E-03 -1.58839E+00 B(6th)/C5 -3.68713E-04 -7.62738E-04 -2.99363E-05 3.40610E-01 C(8th)/C6 1.03201E-04 7.17968E-05 6.39758E-07 -7.63374E-02 D(10th)/C7 -1.20894E-05 -6.55057E-06 -4.13741E-09 7.90405E-03 E(12th)/C8 7.53381E-07 4.86686E-07 3.94968E-12 -1.16381E-02 F(14th)/C9 -2.65247E-08 -2.69081E-08 8.07054E-14 -2.21272E-05 G(16th)/C10 4.44765E-10 1.07265E-09 -4.35084E-16 -1.68431E-04 H(18th)/C11 2.75765E-12 -3.06021E-11 1.33916E-18 5.03832E-04 J(20th)/C12 -3.25365E-13 6.22952E-13 6.77626E-21 -4.82255E-05 K(22th)/C13 7.96029E-15 -9.19665E-15 0.00000E+00 0.00000E+00 L(24th)/C14 -1.83084E-16 3.61446E-17 0.00000E+00 0.00000E+00 M(26th)/C15 -9.23994E-17 -1.69881E-16 0.00000E+00 0.00000E+00 N(28th)/C16 4.04599E-16 -6.22010E-17 0.00000E+00 0.00000E+00 O(30th)/C17 -5.88993E-17 1.94953E-16 0.00000E+00 0.00000E+00

FIG. 9 is a diagram illustrating an imaging device (500) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 10 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 9 according to an embodiment of the present disclosure. FIG. 11 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 9 according to an embodiment of the present disclosure. FIG. 12 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 9 according to an embodiment of the present disclosure.

The imaging device (500) and/or its lens assembly (LA) of FIG. 9 can have a focal length of approximately 2.2 mm, an F-number of approximately 2.1, and an angle of view of approximately 121.8 degrees. In one embodiment, the imaging device (500) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in [Table 5] below, and can have aspheric coefficients of [Table 6], [Table 7], and [Table 8].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -3.6323 0.3851 -4.33 1.5440 55.9 S2* 6.9696 0.6389 S3* 2.0675 0.4460 7.45 1.5672 37.4 S4* 3.7307 0.2016 stop infinity 0.0300 S6* 7.3473 0.6046 3.06 1.5440 55.9 S7* -2.0921 0.2565 S8* -17.9139 0.2300 -5.14 1.6608 20.4 S9* 4.2170 0.0312 S10* 382.1701 0.7798 5.07 1.5440 55.9 S11* -2.7775 0.0300 S12* -2.6519 0.8036 1.91 1.5440 55.9 S13* -0.8277 0.0300 S14* 2.4244 0.5490 -1.99 1.6144 26.0 S15* 0.7424 0.5315 S16 infinity 0.1100 infinity 1.5168 64.2 S17 infinity 0.7098 img infinity 0.0000

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -3.63230E+00 6.96956E+00 2.06746E+00 3.73070E+00 1.00000E+18 k(Conic) -6.65709E+01 6.06419E+00 -3.46277E+00 1.03377E+00 0.00000E+00 A(4th)/C4 7.77854E-01 2.05092E-02 -4.16902E-02 3.17685E-03 0.00000E+00 B(6th)/C5 -1.28661E-01 -8.57034E-04 -1.01863E-02 5.70916E-04 0.00000E+00 C(8th)/C6 3.56771E-02 5.35970E-05 2.45696E-03 6.38239E-05 0.00000E+00 D(10th)/C7 -8.82503E-03 -3.56824E-06 6.00195E-04 6.85787E-05 0.00000E+00 E(12th)/C8 4.23254E-03 2.04044E-07 9.85664E-06 -1.86117E-05 0.00000E+00 F(14th)/C9 -9.42387E-04 -9.72059E-09 -8.82681E-05 1.36254E-05 0.00000E+00 G(16th)/C10 4.42082E-04 3.18650E-10 -1.04418E-05 -4.19724E-06 0.00000E+00 H(18th)/C11 -1.00704E-04 -5.84560E-12 6.97239E-06 7.64308E-07 0.00000E+00 J(20th)/C12 2.16855E-05 4.45028E-14 1.87079E-06 -4.36569E-08 0.00000E+00 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.09208E+00 -1.79139E+01 4.21698E+00 3.82170E+02 -2.77754E+00 k(Conic) 6.27682E-01 -2.01045E+00 -2.18347E+01 3.75301E-03 6.33745E-01 A(4th)/C4 -2.69678E-02 -3.77372E-02 -2.20194E-02 -7.48842E-03 -5.10731E-03 B(6th)/C5 -2.53836E-04 8.93372E-04 1.69807E-03 8.74398E-04 -3.39893E-04 C(8th)/C6 -4.53416E-05 -1.62934E-04 -1.70718E-04 -6.08586E-05 4.81559E-04 D(10th)/C7 -3.16274E-06 3.89613E-05 2.04111E-05 2.55147E-06 -1.26458E-04 E(12th)/C8 4.58074E-06 -5.13350E-06 -1.95800E-06 -6.47501E-08 1.82391E-05 F(14th)/C9 -3.94506E-06 2.59683E-07 1.24939E-07 1.00680E-09 -1.81901E-06 G(16th)/C10 1.20690E-06 3.03680E-09 -4.95086E-09 -9.39938E-12 1.41654E-07 H(18th)/C11 -1.45150E-07 -9.21945E-10 1.10542E-10 4.84684E-14 -8.93772E-09 J(20th)/C12 6.94241E-09 3.07425E-11 -1.06087E-12 -2.25866E-16 4.42810E-10 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -1.63059E-11 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 4.21926E-13 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -7.55787E-15 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 1.60360E-16 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -8.18098E-17

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -2.65185E+00 -8.27697E-01 2.42435E+00 7.42408E-01 k(Conic) 5.68653E-01 -1.60007E+00 -3.60879E+01 -4.48506E+00 A(4th)/C4 -4.44994E-03 9.93976E-03 -4.65546E-04 -3.49554E-04 B(6th)/C5 -1.81494E-04 -9.11094E-04 -5.36048E-05 9.66256E-07 C(8th)/C6 4.64036E-04 8.58202E-05 1.35646E-06 -4.76255E-11 D(10th)/C7 -1.11664E-04 -5.90701E-06 -2.15763E-08 -3.01352E-11 E(12th)/C8 1.36988E-05 2.61163E-07 2.28258E-10 2.26290E-13 F(14th)/C9 -1.04083E-06 -7.15967E-09 -1.50526E-12 -9.00108E-16 G(16th)/C10 5.28864E-08 1.17475E-10 5.85411E-15 3.71763E-18 H(18th)/C11 -1.86525E-09 -1.05431E-12 -1.22417E-17 1.71397E-18 J(20th)/C12 4.63675E-11 3.79492E-15 6.20028E-19 -1.25869E-18 K(22th)/C13 -8.10590E-13 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 9.82921E-15 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 2.80090E-16 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 2.78955E-16 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 -7.07378E-16 0.00000E+00 0.00000E+00 0.00000E+00

FIG. 13 is a diagram illustrating an imaging device (600) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 14 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 13 according to an embodiment of the present disclosure. FIG. 15 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 13 according to an embodiment of the present disclosure. FIG. 16 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 13 according to an embodiment of the present disclosure.

The imaging device (600) and/or its lens assembly (LA) of FIG. 13 can have a focal length of approximately 2.22 mm, an F-number of approximately 2.24, and an angle of view of approximately 121.9 degrees. In one embodiment, the imaging device (600) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in [Table 9] below, and can have aspheric coefficients of [Table 10], [Table 11], and [Table 12].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -4.074 0.408 -4.43 1.544 55.9 S2* 6.104 0.771 S3* 2.474 0.382 8.52 1.689 31.2 S4* 4.007 0.297 stop infinity 0.005 S6* 7,300 0.493 March 18 1.592 67.0 S7* -2.473 0.368 S8* 9.330 0.180 -6.90 1.661 20.4 S9* 3.038 0.078 S10* 16.620 0.671 5.86 1.544 55.9 S11* -3.884 0.039 S12* -3.549 0.706 2.29 1.544 55.9 S13* -0.986 0.035 S14* 2.341 0.544 -2.33 1.614 26.0 S15* 0.810 0.501 S16 infinity 0.110 infinity 1.517 64.2 S17 infinity 0.698 img infinity 0

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -4.07383E+00 6.10376E+00 2.47420E+00 4.00705E+00 7.30035E+00 k(Conic) -5.98165E+01 8.44666E+00 -6.99638E+00 -1.01297E+01 1.91466E+00 A(4th)/C4 9.41878E-01 1.56035E-02 -5.59121E-02 1.85178E-03 -4.72194E-04 B(6th)/C5 -1.46706E-01 -4.63233E-04 -5.33343E-03 1.87200E-03 2.41050E-04 C(8th)/C6 4.20139E-02 1.77973E-05 3.07379E-03 9.66738E-04 3.19634E-05 D(10th)/C7 -1.09859E-02 -2.31564E-07 1.61089E-04 1.23452E-04 1.82397E-05 E(12th)/C8 4.81495E-03 -6.32746E-08 -1.36593E-04 3.65584E-05 -5.53325E-06 F(14th)/C9 -1.12647E-03 6.90588E-09 -4.27771E-05 1.39924E-06 1.36890E-06 G(16th)/C10 6.54952E-04 -3.91881E-10 -1.21351E-06 1.65068E-06 -3.87190E-06 H(18th)/C11 -1.98589E-04 1.36160E-11 -3.67924E-07 -1.33826E-07 2.41166E-06 J(20th)/C12 3.80115E-05 -2.85870E-13 -5.70925E-07 5.21529E-07 -3.18574E-07 K(22th)/C13 -3.71410E-05 3.31917E-15 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 -9.96391E-06 -2.08167E-17 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.47333E+00 9.33023E+00 3.03797E+00 1.66201E+01 -3.88414E+00 k(Conic) -1.44925E+00 1.23264E+01 -2.86169E+01 -5.29773E+01 7.20871E-01 A(4th)/C4 -2.12391E-02 -3.03355E-02 -1.47366E-02 -6.62156E-03 -7.64168E-03 B(6th)/C5 -1.82636E-04 8.22252E-04 4.45415E-04 1.23636E-05 1.49312E-03 C(8th)/C6 -3.03728E-05 -1.21013E-04 -2.06387E-05 8.61185E-06 -2.76626E-04 D(10th)/C7 1.59267E-05 3.58034E-05 2.16703E-05 1.91374E-05 3.56976E-05 E(12th)/C8 -7.84357E-06 -1.63301E-05 -7.76499E-06 -5.18350E-06 -2.99919E-06 F(14th)/C9 4.39232E-06 5.58934E-06 1.54110E-06 6.64466E-07 9.30329E-08 G(16th)/C10 -1.09360E-06 -1.20017E-06 -2.00736E-07 -5.12838E-08 1.23092E-08 H(18th)/C11 1.18042E-07 1.60229E-07 1.82020E-08 2.54174E-09 -1.95908E-09 J(20th)/C12 0.00000E+00 -1.30233E-08 -1.16443E-09 -8.13362E-11 1.38691E-10 K(22th)/C13 0.00000E+00 5.89856E-10 5.16323E-11 1.61753E-12 -5.96158E-12 L(24th)/C14 0.00000E+00 -1.13781E-11 -1.50855E-12 -1.80367E-14 1.63347E-13 M(26th)/C15 0.00000E+00 0.00000E+00 2.60727E-14 8.48524E-17 -3.07655E-15 N(28th)/C16 0.00000E+00 0.00000E+00 -2.02055E-16 0.00000E+00 4.22363E-16 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -2.02610E-16

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -3.54868E+00 -9.86343E-01 2.34096E+00 8.10378E-01 k(Conic) -8.43994E-02 -2.14639E+00 -1.49904E+01 -4.30467E+00 A(4th)/C4 2.09514E-01 6.38116E-03 -2.70111E-03 -6.49735E-04 B(6th)/C5 -6.30195E-02 -4.12326E-04 -3.57126E-05 5.48677E-06 C(8th)/C6 2.76682E-02 4.33401E-05 5.27384E-06 -4.07272E-08 D(10th)/C7 5.00116E-03 -3.85335E-06 -2.63187E-07 1.41650E-10 E(12th)/C8 -5.61839E-03 3.46787E-07 7.76966E-09 7.30474E-13 F(14th)/C9 4.99012E-03 -2.78858E-08 -1.51882E-10 -1.31716E-14 G(16th)/C10 -1.87797E-03 1.63752E-09 2.02959E-12 8.72275E-17 H(18th)/C11 3.31134E-04 -6.63146E-11 -1.82778E-14 -1.51958E-18 J(20th)/C12 -1.09731E-03 1.84546E-12 1.08037E-16 -1.97697E-18 K(22th)/C13 2.30734E-04 -3.50428E-14 1.16287E-18 -1.67458E-18 L(24th)/C14 1.03189E-04 6.69217E-16 1.57887E-18 -1.62630E-19 M(26th)/C15 1.74692E-04 1.71030E-16 0.00000E+00 -1.51619E-19 N(28th)/C16 -1.47830E-04 -2.31443E-17 0.00000E+00 1.61307E-18 O(30th)/C17 0.00000E+00 1.41102E-16 0.00000E+00 2.65799E-18

FIG. 17 is a diagram illustrating an imaging device (700) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 18 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 17 according to an embodiment of the present disclosure. FIG. 19 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 17 according to an embodiment of the present disclosure. FIG. 20 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 17 according to an embodiment of the present disclosure.

The imaging device (700) and/or its lens assembly (LA) of FIG. 17 can have a focal length of approximately 2.18 mm, an F-number of approximately 2.18, and an angle of view of approximately 121.5 degrees. In one embodiment, the imaging device (700) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in [Table 13] below, and can have aspheric coefficients of [Table 14], [Table 15], and [Table 16].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -3.94245 0.41377 -4.442 1.54397 55.93 S2* 6.47455 0.75594 S3* 2.44585 0.38773 8.324 1.68893 31.16 S4* 3.98892 0.28919 stop infinity 0.01000 S6* 7.10568 0.53207 3.195 1.59201 67.02 S7* -2.50603 0.33214 S8* 8.74045 0.18000 -7.093 1.66075 20.38 S9* 3.02590 0.09247 S10* 18.66280 0.72068 5.581 1.54397 55.93 S11* -3.57652 0.03257 S12* -3.32517 0.63591 2.367 1.54397 55.93 S13* -0.99086 0.03000 S14* 1.89720 0.48542 -2.424 1.61443 25.96 S15* 0.75306 0.52921 S16 infinity 0.11 infinity 1.51680 64.2 S17 infinity 0.69434 img infinity 0

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -3.94245E+00 6.47455E+00 2.44585E+00 3.98892E+00 7.10568E+00 k(Conic) -6.30673E+01 7.21549E+00 -5.96254E+00 -7.23879E+00 -6.80001E+00 A(4th)/C4 8.47280E-01 1.65623E-02 -4.35132E-02 2.82793E-03 -4.22892E-04 B(6th)/C5 -1.40456E-01 -4.98921E-04 -6.01093E-03 1.61834E-03 1.37575E-04 C(8th)/C6 3.39944E-02 2.26247E-05 2.19621E-03 9.54198E-04 1.87455E-05 D(10th)/C7 -9.49132E-03 -1.15425E-06 2.75129E-04 1.33179E-04 1.75928E-05 E(12th)/C8 3.33810E-03 5.13969E-08 -4.96284E-05 3.71944E-05 -1.11110E-05 F(14th)/C9 -8.72010E-04 -2.26295E-09 -3.47985E-05 -3.15036E-06 2.16940E-06 G(16th)/C10 3.55418E-04 7.31259E-11 4.37738E-06 2.34031E-06 -2.00215E-07 H(18th)/C11 -7.48240E-05 -1.28269E-12 -1.45209E-06 -3.23749E-06 9.08328E-09 J(20th)/C12 3.05303E-06 9.00007E-15 -4.62822E-07 2.93172E-06 -1.65176E-10 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.50603E+00 8.74045E+00 3.02590E+00 1.86628E+01 -3.57652E+00 k(Conic) -5.59413E-01 -9.02602E-01 -2.79975E+01 -6.08697E+01 7.47792E-01 A(4th)/C4 -2.27785E-02 -3.33036E-02 -1.63536E-02 -6.00596E-03 -6.88428E-03 B(6th)/C5 -2.53655E-04 9.31677E-04 5.91048E-04 -1.14685E-04 1.22346E-03 C(8th)/C6 -3.52703E-05 -9.37219E-05 4.17495E-05 9.30661E-05 -1.89472E-04 D(10th)/C7 1.23701E-05 3.96816E-06 -1.92663E-05 -1.17618E-05 1.69524E-05 E(12th)/C8 -2.59244E-06 1.10863E-06 4.34979E-06 8.30646E-07 -2.37322E-07 F(14th)/C9 7.57243E-07 -2.79293E-07 -7.02739E-07 -3.79021E-08 -1.63014E-07 G(16th)/C10 -5.12105E-08 3.33302E-08 8.20708E-08 1.17560E-09 2.41510E-08 H(18th)/C11 0.00000E+00 -2.31649E-09 -6.82940E-09 -2.52567E-11 -1.84596E-09 J(20th)/C12 0.00000E+00 6.92148E-11 3.98050E-10 3.75618E-13 8.90503E-11 K(22th)/C13 0.00000E+00 0.00000E+00 -1.58283E-11 -3.79293E-15 -2.85064E-12 L(24th)/C14 0.00000E+00 0.00000E+00 4.08427E-13 2.58311E-17 6.08148E-14 M(26th)/C15 0.00000E+00 0.00000E+00 -6.15367E-15 5.24313E-19 -9.89202E-16 N(28th)/C16 0.00000E+00 0.00000E+00 3.94650E-17 1.01644E-19 1.88351E-16 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 1.89363E-16

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -3.32517E+00 -9.90858E-01 1.89720E+00 7.53059E-01 k(Conic) 2.24706E-01 -2.06097E+00 -1.49811E+01 -4.02969E+00 A(4th)/C4 -8.34643E-04 6.98237E-03 -1.99978E-03 -8.20662E-04 B(6th)/C5 1.28942E-03 -3.98088E-04 -1.00852E-04 7.10592E-06 C(8th)/C6 -2.23238E-04 2.75966E-05 7.33678E-06 -6.71489E-08 D(10th)/C7 2.90296E-05 -1.72119E-06 -2.63739E-07 7.00859E-10 E(12th)/C8 -2.80274E-06 1.87555E-07 5.67026E-09 -8.47904E-12 F(14th)/C9 1.89810E-07 -1.88074E-08 -7.76702E-11 9.05750E-14 G(16th)/C10 -8.95756E-09 1.17668E-09 7.03091E-13 -7.19350E-16 H(18th)/C11 2.97270E-10 -4.68247E-11 -4.26462E-15 1.18119E-18 J(20th)/C12 -6.97575E-12 1.23712E-12 1.60733E-17 -3.96538E-18 K(22th)/C13 1.15265E-13 -2.23419E-14 3.48978E-19 -1.49925E-18 L(24th)/C14 -1.25701E-15 2.98515E-16 -3.12238E-19 1.55854E-19 M(26th)/C15 2.08142E-16 -1.09342E-16 -8.13152E-19 -1.57972E-18 N(28th)/C16 1.74336E-16 1.62032E-16 0.00000E+00 -2.69981E-18 O(30th)/C17 -5.00224E-17 1.83935E-16 0.00000E+00 -9.60535E-19

FIG. 21 is a diagram illustrating an imaging device (800) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 22 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 21 according to an embodiment of the present disclosure. FIG. 23 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 21 according to an embodiment of the present disclosure. FIG. 24 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 21 according to an embodiment of the present disclosure.

The imaging device (800) and/or its lens assembly (LA) of FIG. 21 can have a focal length of approximately 2.22 mm, an F-number of approximately 2.20, and an angle of view of approximately 121.6 degrees. In one embodiment, the imaging device (800) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in the following [Table 17], and can have aspheric coefficients of [Table 18], [Table 19], and [Table 20].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -3.977 0.385 -4.46 1.544 55.9 S2* 6.451 0.749 S3* 2.325 0.371 8.10 1.689 31.2 S4* 3.727 0.317 stop infinity 0.012 S6* 7.831 0.476 3.20 1.589 61.3 S7* -2.427 0.381 S8* 8.601 0.180 -6.95 1.671 19.2 S9* 2.998 0.060 S10* 33.472 0.629 7.65 1.544 55.9 S11* -4.721 0.056 S12* -2.838 0.678 2.08 1.544 55.9 S13* -0.877 0.035 S14* 1.998 0.497 -2.40 1.635 24.0 S15* 0.781 0.529 S16 infinity 0.110 infinity 1.517 64.2 S17 infinity 0.734 img infinity 0.01869

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -3.97729E+00 6.45077E+00 2.32514E+00 3.72704E+00 7.83134E+00 k(Conic) -6.49672E+01 5.90228E+00 -5.97342E+00 -8.45690E+00 -7.67324E+00 A(4th)/C4 8.54335E-01 1.73321E-02 -4.48876E-02 1.23604E-03 -1.20476E-03 B(6th)/C5 -1.48958E-01 -5.50914E-04 -6.81250E-03 1.11533E-03 1.34459E-04 C(8th)/C6 3.80183E-02 2.55556E-05 2.34409E-03 8.57161E-04 3.84742E-05 D(10th)/C7 -1.03089E-02 -1.33943E-06 3.02248E-04 1.32546E-04 1.72857E-05 E(12th)/C8 3.80016E-03 5.70567E-08 -6.94605E-05 2.43155E-05 -7.56659E-06 F(14th)/C9 -1.01392E-03 -2.20818E-09 -3.21347E-05 6.36750E-07 8.82338E-07 G(16th)/C10 3.98187E-04 6.54815E-11 -2.27905E-07 9.49134E-07 -3.34517E-08 H(18th)/C11 -1.19820E-04 -1.10999E-12 1.95883E-06 -5.97625E-07 0.00000E+00 J(20th)/C12 6.37064E-06 7.69610E-15 -6.56264E-07 5.37802E-07 0.00000E+00 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.42660E+00 8.60144E+00 2.99765E+00 3.34722E+01 -4.72148E+00 k(Conic) -1.13412E+00 1.38029E+01 -2.42123E+01 -1.00000E+01 1.99734E+00 A(4th)/C4 -2.15617E-02 -2.96301E-02 -1.43198E-02 -5.47990E-03 -7.31014E-03 B(6th)/C5 -2.67660E-04 7.70583E-04 3.57175E-04 -2.81062E-04 1.01281E-03 C(8th)/C6 -1.83208E-05 -9.35791E-05 6.38339E-05 1.30159E-04 -8.19958E-05 D(10th)/C7 1.02536E-05 3.67911E-06 -1.86477E-05 -1.57622E-05 7.20624E-07 E(12th)/C8 -3.18580E-06 1.50425E-06 3.05584E-06 1.06782E-06 1.96313E-07 F(14th)/C9 1.78101E-06 -3.37485E-07 -3.38357E-07 -4.62775E-08 6.17015E-09 G(16th)/C10 -1.94352E-07 3.46643E-08 2.51463E-08 1.35469E-09 -2.43351E-09 H(18th)/C11 0.00000E+00 -1.91779E-09 -1.21982E-09 -2.73997E-11 1.91211E-10 J(20th)/C12 0.00000E+00 4.46250E-11 3.67903E-11 3.83328E-13 -8.21135E-12 K(22th)/C13 0.00000E+00 0.00000E+00 -6.23770E-13 -3.83926E-15 2.18791E-13 L(24th)/C14 0.00000E+00 0.00000E+00 4.53142E-15 -8.01293E-18 -4.21124E-15 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 1.02923E-16 -1.84768E-16 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 1.05771E-16 2.31206E-17 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -1.02755E-16

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -2.83833E+00 -8.77217E-01 1.99783E+00 7.80851E-01 k(Conic) -9.09870E-02 -2.15232E+00 -1.15712E+01 -4.71807E+00 A(4th)/C4 -1.22223E-03 7.07151E-03 -1.55487E-03 -5.22167E-04 B(6th)/C5 1.06102E-03 -6.42859E-04 -8.49799E-06 3.87923E-06 C(8th)/C6 -6.21820E-05 8.68146E-05 5.60137E-07 -3.63603E-08 D(10th)/C7 -4.51407E-06 -1.00106E-05 -1.49323E-08 2.78989E-10 E(12th)/C8 9.89644E-07 9.54925E-07 2.46381E-10 -1.58484E-12 F(14th)/C9 -7.97395E-08 -6.89292E-08 -2.56342E-12 6.23611E-15 G(16th)/C10 3.92007E-09 3.57617E-09 1.72823E-14 -1.82298E-17 H(18th)/C11 -1.30619E-10 -1.31854E-10 -7.64295E-17 -1.16806E-18 J(20th)/C12 3.05352E-12 3.44604E-12 -1.00458E-18 1.35059E-18 K(22th)/C13 -5.03800E-14 -6.32435E-14 -4.08482E-19 -5.28601E-19 L(24th)/C14 5.04367E-16 1.07457E-15 2.50722E-19 -3.78793E-18 M(26th)/C15 -2.76309E-17 -4.90263E-16 0.00000E+00 0.00000E+00 N(28th)/C16 -1.31282E-16 -7.84353E-18 0.00000E+00 0.00000E+00 O(30th)/C17 -2.90731E-17 -3.84329E-16 0.00000E+00 0.00000E+00

FIG. 25 is a diagram illustrating an imaging device (900) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 26 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 25 according to an embodiment of the present disclosure. FIG. 27 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 25 according to an embodiment of the present disclosure. FIG. 28 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 25 according to an embodiment of the present disclosure.

The imaging device (900) and/or its lens assembly (LA) of FIG. 25 can have a focal length of approximately 2.21 mm, an F-number of approximately 2.19, and an angle of view of approximately 119.7 degrees. In one embodiment, the imaging device (900) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in [Table 21] below, and can have aspheric coefficients of [Table 22], [Table 23], and [Table 24].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -4.132 0.390 -4.65 1.544 55.9 S2* 6.730 0.761 S3* 2.504 0.345 8.86 1.689 31.2 S4* 4.009 0.304 stop infinity 0.005 S6* 7.429 0.497 March 19 1.592 67.0 S7* -2.474 0.354 S8* 9.760 0.180 -6.58 1.661 20.4 S9* 2.985 0.086 S10* 15.289 0.706 5.51 1.544 55.9 S11* -3.667 0.036 S12* -2.841 0.683 2.00 1.544 55.9 S13* -0.855 0.033 S14* 2.387 0.507 -2.03 1.614 26.0 S15* 0.752 0.528 S16 infinity 0.110 infinity 1.517 64.2 S17 infinity 0.698 img infinity 0

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -4.13222E+00 6.73016E+00 2.50437E+00 4.00885E+00 7.42924E+00 k(Conic) -6.77415E+01 6.37406E+00 -8.35744E+00 -1.00000E+01 -6.10310E-01 A(4th)/C4 9.12187E-01 1.66155E-02 -4.21612E-02 -1.07136E-03 -5.52638E-04 B(6th)/C5 -1.41652E-01 -5.38436E-04 -5.62569E-03 1.63914E-03 1.29325E-04 C(8th)/C6 3.90462E-02 3.04985E-05 1.92759E-03 1.02268E-03 2.13590E-05 D(10th)/C7 -9.89916E-03 -2.23199E-06 2.18354E-04 1.30315E-04 1.52067E-05 E(12th)/C8 4.42661E-03 1.46569E-07 -5.01787E-05 3.58748E-05 -6.28787E-06 F(14th)/C9 -8.37702E-04 -7.53454E-09 -1.25895E-05 -3.67956E-07 3.11918E-06 G(16th)/C10 5.55913E-04 2.58564E-10 -1.79291E-06 2.96200E-06 -3.01552E-06 H(18th)/C11 -1.24310E-04 -5.35401E-12 1.80092E-06 -2.76276E-06 8.35599E-07 J(20th)/C12 3.03058E-05 6.02083E-14 -2.86196E-06 2.43194E-06 0.00000E+00 K(22th)/C13 -2.41388E-05 -2.85254E-16 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.47424E+00 9.75998E+00 2.98544E+00 1.52893E+01 -3.66685E+00 k(Conic) -1.03061E+00 7.19686E+00 -2.97262E+01 -5.37809E+01 2.34364E-01 A(4th)/C4 -2.15203E-02 -3.20724E-02 -1.65105E-02 -8.26653E-03 -6.55600E-03 B(6th)/C5 -2.70846E-04 9.48403E-04 6.62174E-04 1.04355E-05 1.30731E-03 C(8th)/C6 -1.97847E-05 -1.20224E-04 2.62237E-05 8.80299E-05 -1.99775E-04 D(10th)/C7 8.13775E-06 1.12359E-05 -1.40746E-05 -6.54366E-06 1.57676E-05 E(12th)/C8 -2.52975E-06 -8.80670E-07 2.75232E-06 -7.35889E-07 4.07744E-08 F(14th)/C9 6.48736E-07 2.02462E-07 -3.98758E-07 1.86204E-07 -1.97594E-07 G(16th)/C10 -7.95406E-09 -3.27261E-08 4.46265E-08 -1.79795E-08 2.88176E-08 H(18th)/C11 0.00000E+00 2.07101E-09 -3.59427E-09 1.04001E-09 -2.34777E-09 J(20th)/C12 0.00000E+00 -4.21988E-11 1.92915E-10 -3.94723E-11 1.24157E-10 K(22th)/C13 0.00000E+00 0.00000E+00 -6.34662E-12 1.00256E-12 -4.41960E-12 L(24th)/C14 0.00000E+00 0.00000E+00 1.08294E-13 -1.67020E-14 1.05096E-13 M(26th)/C15 0.00000E+00 0.00000E+00 -4.27387E-16 1.67874E-16 -1.37234E-15 N(28th)/C16 0.00000E+00 0.00000E+00 -1.16010E-17 -3.00866E-18 3.40006E-16 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 2.74886E-16

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -2.84055E+00 -8.54743E-01 2.38704E+00 7.52232E-01 k(Conic) -2.96336E-01 -2.04221E+00 -1.48329E+01 -4.43537E+00 A(4th)/C4 -1.43562E-03 8.61433E-03 -2.41982E-03 -6.35248E-04 B(6th)/C5 1.51763E-03 -7.29688E-04 -2.17790E-05 5.90261E-06 C(8th)/C6 -2.21961E-04 8.49848E-05 3.73008E-06 -5.49565E-08 D(10th)/C7 2.23157E-05 -8.69781E-06 -2.00939E-07 3.33077E-10 E(12th)/C8 -1.68223E-06 8.23416E-07 6.60287E-09 -5.17455E-13 F(14th)/C9 8.41082E-08 -6.38927E-08 -1.48738E-10 -1.25562E-14 G(16th)/C10 -1.81615E-09 3.62069E-09 2.37180E-12 1.50626E-16 H(18th)/C11 -7.53984E-11 -1.44991E-10 -2.65588E-14 -5.37442E-19 J(20th)/C12 7.97429E-12 4.08602E-12 2.04369E-16 7.94093E-20 K(22th)/C13 -3.27917E-13 -8.03160E-14 1.09437E-18 1.01729E-18 L(24th)/C14 8.08087E-15 8.22862E-16 -1.04111E-18 7.68259E-19 M(26th)/C15 5.08244E-16 -3.98187E-16 -2.36492E-18 -1.06260E-18 N(28th)/C16 1.58898E-16 -2.17052E-17 0.00000E+00 3.67612E-19 O(30th)/C17 -6.15907E-17 -1.42464E-16 0.00000E+00 1.65510E-18

FIG. 29 is a diagram illustrating an imaging device (1000) and/or a lens assembly (LA) according to an embodiment of the present disclosure. FIG. 30 is a graph illustrating spherical aberration of the lens assembly (LA) of FIG. 29 according to an embodiment of the present disclosure. FIG. 31 is a graph illustrating astigmatism of the lens assembly (LA) of FIG. 29 according to an embodiment of the present disclosure. FIG. 32 is a graph illustrating a distortion rate of the lens assembly (LA) of FIG. 29 according to an embodiment of the present disclosure.

The imaging device (1000) and/or its lens assembly (LA) of FIG. 29 can have a focal length of approximately 2.03 mm, an F-number of approximately 1.98, and an angle of view of approximately 125.9 degrees. In one embodiment, the imaging device (1000) and/or its lens assembly (LA) can satisfy at least some of the above-described condition(s), can be manufactured with the specifications exemplified in [Table 25] below, and can have aspheric coefficients of [Table 26], [Table 27], and [Table 28].

Lens surface
(Surf) Radius of curvature
(Radius) thickness
(Thick) focal length
(EFL) refractive index
(nd) Abe number
(vd) obj infinity infinity S1* -3.463 0.341 -3.84 1.544 56.0 S2* 5.451 0.658 S3* 1.679 0.258 8.32 1.567 37.4 S4* 2.463 0.366 stop infinity 0.043 S6* 6.129 0.704 March 19 1.544 56.0 S7* -2.319 0.230 S8* 9.334 0.180 -6.23 1.671 19.2 S9* 2.864 0.040 S10* 10.731 0.549 7.46 1.544 56.0 S11* -6.407 0.171 S12* -5.139 0.766 1.94 1.544 56.0 S13* -0.920 0.022 S14* 1.779 0.493 -2.39 1.635 24.0 S15* 0.732 0.531 S16 infinity 0.110 infinity 1.517 64.2 S17 infinity 0.698 img infinity 0

Lens surface
(Surf) S1 S2 S3 S4 S6 Radius of curvature
(Radius) -3.46342E+00 5.45083E+00 1.67948E+00 2.46322E+00 6.12927E+00 k(Conic) -5.01453E+01 6.89607E+00 -2.04363E+00 1.67864E+00 -8.69197E+00 A(4th)/C4 9.27338E-01 1.98040E-02 -2.55595E-02 6.60783E-03 1.52533E-03 B(6th)/C5 -1.38723E-01 -8.67044E-04 -7.67674E-03 -2.95370E-04 -6.81527E-04 C(8th)/C6 5.06499E-02 4.76630E-05 4.00742E-03 1.32144E-04 3.92603E-05 D(10th)/C7 -1.31828E-02 -1.08340E-06 8.62602E-04 -1.57221E-05 -6.00671E-05 E(12th)/C8 6.54949E-03 -2.71693E-07 -1.75571E-04 1.50551E-05 2.00860E-05 F(14th)/C9 -1.84416E-03 4.28722E-08 -1.12026E-04 -6.39317E-06 -1.00069E-05 G(16th)/C10 8.59096E-04 -3.29785E-09 -2.51856E-06 2.90156E-06 1.16657E-05 H(18th)/C11 -3.51198E-04 1.55792E-10 1.83691E-05 -6.16806E-07 -4.42186E-06 J(20th)/C12 1.05557E-04 -4.68844E-12 1.30651E-07 5.06276E-08 0.00000E+00 K(22th)/C13 -5.06854E-05 8.77804E-14 0.00000E+00 0.00000E+00 0.00000E+00 L(24th)/C14 -7.38134E-06 -9.33996E-16 0.00000E+00 0.00000E+00 0.00000E+00 M(26th)/C15 9.74502E-07 1.21973E-18 0.00000E+00 0.00000E+00 0.00000E+00 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00

Lens surface
(Surf) S7 S8 S9 S10 S11 Radius of curvature
(Radius) -2.31908E+00 9.33376E+00 2.86354E+00 1.07313E+01 -6.40678E+00 k(Conic) 3.81581E-01 1.80365E+01 -2.77450E+01 -1.50000E+01 4.20324E+00 A(4th)/C4 -9.42791E-02 -5.21121E-02 -2.13179E-01 -8.65062E-03 -1.04030E-01 B(6th)/C5 -1.23893E-03 1.62526E-03 3.51033E-02 1.63261E-03 2.07268E-02 C(8th)/C6 -1.09057E-03 -6.67048E-05 -4.39076E-03 -3.56519E-04 7.02581E-03 D(10th)/C7 9.36556E-05 -2.46831E-05 2.13887E-03 5.68630E-05 2.25049E-03 E(12th)/C8 -6.61813E-05 5.74325E-06 -1.22431E-03 -6.38433E-06 -3.30269E-04 F(14th)/C9 1.15497E-05 -4.85403E-07 2.20005E-04 5.18558E-07 2.35608E-03 G(16th)/C10 -6.45870E-06 1.46342E-08 2.43282E-05 -2.99063E-08 -1.26722E-04 H(18th)/C11 7.70711E-06 0.00000E+00 -4.81805E-06 1.14741E-09 -1.68725E-04 J(20th)/C12 -6.95330E-06 0.00000E+00 -1.60733E-05 -2.58987E-11 2.18548E-04 K(22th)/C13 0.00000E+00 0.00000E+00 0.00000E+00 2.57816E-13 -1.37602E-05 L(24th)/C14 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 7.44489E-05 M(26th)/C15 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 -3.53594E-06 N(28th)/C16 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 2.93427E-05 O(30th)/C17 0.00000E+00 0.00000E+00 0.00000E+00 0.00000E+00 5.44964E-06

Lens surface
(Surf) S12 S13 S14 S15 Radius of curvature
(Radius) -5.13885E+00 -9.19942E-01 1.77864E+00 7.31520E-01 k(Conic) 1.21000E+00 -1.80156E+00 -1.86274E+01 -3.93607E+00 A(4th)/C4 -1.98388E-04 3.14527E-01 1.79362E-03 -8.87707E-04 B(6th)/C5 1.84144E-04 -1.79544E-02 -4.60640E-04 1.31810E-05 C(8th)/C6 8.87521E-05 2.36042E-02 4.78407E-05 -2.87187E-07 D(10th)/C7 -3.04878E-05 -2.54815E-03 -3.99045E-06 5.36465E-09 E(12th)/C8 4.94079E-06 3.85503E-03 2.50215E-07 -7.69313E-11 F(14th)/C9 -5.46696E-07 -2.09581E-03 -1.16073E-08 8.31203E-13 G(16th)/C10 4.49525E-08 5.08610E-04 3.97837E-10 -6.75084E-15 H(18th)/C11 -2.78194E-09 -9.33476E-04 -1.00614E-11 4.14055E-17 J(20th)/C12 1.28452E-10 -4.82538E-05 1.86508E-13 5.67089E-19 K(22th)/C13 -4.34435E-12 -1.10447E-05 -2.49565E-15 -1.20617E-18 L(24th)/C14 1.04158E-13 5.61373E-05 2.13867E-17 -2.50510E-18 M(26th)/C15 -1.84676E-15 0.00000E+00 -2.48689E-18 -1.42302E-18 N(28th)/C16 4.20149E-16 0.00000E+00 7.19978E-20 -1.74055E-18 O(30th)/C17 3.36971E-18 0.00000E+00 1.30443E-19 -1.65764E-18

Regarding the conditions presented through the above-described [mathematical formulas], the values calculated by the lens data of the imaging device (400, 500, 600, 700, 800, 900, 1000) and/or the lens assembly (LA) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25 and/or FIG. 29 are exemplified in [Table 29] below.

Mathematical formula Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 f1/f7 2.33 2.18 1.90 1.83 1.86 2.29 1.65 (R6-R7)/(R6+R7) 2.97 1.80 2.02 2.09 1.90 2.00 2.21 f4/f5 -1.75 -1.01 -1.18 -1.27 -0.91 -1.19 -0.88

As described above, the imaging device (400, 500, 600, 700, 800, 900, 1000) and/or the lens assembly (LA) according to the embodiment(s) of the present disclosure can be easily miniaturized and provide good wide-angle (or ultra-wide-angle) performance. In one embodiment, when a lens having a positive refractive power among the lenses arranged between the first lens on the subject side (e.g., the first lens (L1)) and the first lens on the image sensor side (e.g., the n-th lens) is a glass lens, performance deviation of the lens assembly (LA) due to temperature change can be suppressed. In one embodiment, when a lens having a positive refractive power among the lenses arranged between the first lens on the subject side (e.g., the first lens (L1)) and the first lens on the image sensor side (e.g., the n-th lens) is a glass lens including an aspherical surface, control of field curvature can be easily performed. In one embodiment, when the conditions described above regarding the ratio of the focal lengths of the first lens (L1) and the n-th lens (e.g., the seventh lens (L7)), the ratio of the curvature radii of the two lens surfaces of the third lens (L1), and/or the ratio of the focal lengths of the fourth lens (L4) and the fifth lens (L5) are satisfied, the aberration control or the field curvature control of the lens assembly (LA) can be easily performed, thereby improving the optical performance. Accordingly, the imaging device (400, 500, 600, 700, 800, 900, 1000) and/or the lens assembly (LA) according to the embodiment(s) of the present disclosure can be easily mounted on a miniaturized electronic device while providing wide-angle or ultra-wide-angle performance.

The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure pertains from the description of the above-described embodiment(s).

According to one embodiment of the present disclosure, an imaging device (e.g., an imaging device (400, 500, 600, 700, 800, 900, 1000) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) and/or an electronic device (e.g., an electronic device (101, 102, 104, 300) of FIG. 1 or FIG. 3) including the same comprises at least an image sensor (e.g., an image sensor (I, 230) of FIG. 2, FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) and an optical axis (e.g., an optical axis (O) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) aligned along the optical axis. A lens assembly (e.g., lens assembly (LA) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) may be included, which includes seven lenses (e.g., lenses (L1, L2, L3, L4, L5, L6, L7)(s) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) configured to focus or guide light incident from outside the imaging device to the image sensor. In one embodiment, the at least seven lenses include a first lens (e.g., the first lens (L1) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) that is positioned furthest from the image sensor and has negative refractive power, a second lens (e.g., the second lens (L2) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) that is positioned between the first lens and the image sensor and has positive refractive power, a third lens (e.g., the third lens (L3) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) that is positioned between the second lens and the image sensor and has positive or negative refractive power, A fourth lens having refractive power (e.g., the fourth lens (L4) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a fifth lens disposed between the fourth lens and the image sensor and having positive or negative refractive power (e.g., the fifth lens (L5) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a sixth lens disposed between the fifth lens and the image sensor and having positive refractive power (e.g., the sixth lens (L6) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), and a seventh lens disposed between the sixth lens and the image sensor and having negative refractive power (e.g., the fourth lens (L4) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. The seventh lens (L7) of 29 may be included. In one embodiment, the lens assembly may satisfy [Conditional Expression 1; 1.5 < f1/f7 < 2.5]. Here, 'f1' may be the focal length of the first lens, and 'f7' may be the focal length of the seventh lens.

According to one embodiment, the sensor-side surface of the first lens may be concave, the subject-side surface of the second lens may be convex, the sensor-side surface of the fourth lens may be concave, the sensor-side surface of the fifth lens may be convex, and the sensor-side surface of the seventh lens may be concave.

According to one embodiment, the lens assembly may satisfy [Conditional Expression 2; 1.5 < (R6-R7)/(R6+R7) < 3.5]. Here, 'R6' may be a radius of curvature of a subject-side surface of the third lens, and 'R7' may be a radius of curvature of a sensor-side surface of the third lens.

According to one embodiment, the lens assembly may satisfy [Conditional Expression 3; 0.8 < |f4/f5| < 2.0]. Here, 'f4' may be the focal length of the fourth lens, and 'f5' may be the focal length of the fifth lens.

In one embodiment, at least one of the second lens, the third lens, the fifth lens, or the sixth lens may be a glass lens.

In one embodiment, at least one of the second lens, the third lens, the fifth lens, or the sixth lens may be a glass lens including an aspherical surface.

In one embodiment, at least one of the first lens, the fourth lens, or the seventh lens may be a plastic lens.

In one embodiment, the second lens may be a glass lens including an aspherical surface.

In one embodiment, the third lens may be a glass lens including an aspherical surface.

In one embodiment, the third lens may have a defined refractive power.

In one embodiment, the lens assembly can have a field of view of greater than or equal to 110 degrees and less than or equal to 130 degrees.

According to one embodiment, the imaging device and/or electronic device including the same may further include a stop (e.g., the stop of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) disposed between the second lens and the third lens.

According to one embodiment of the present disclosure, an electronic device (e.g., the electronic device (101, 102, 104, 300) of FIG. 1 or FIG. 3) may include an imaging device (e.g., the imaging device (400, 500, 600, 700, 800, 900, 1000) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) as described above, at least one processor (e.g., the processor (120) of FIG. 1), and a memory (e.g., the memory (130) of FIG. 1). In one embodiment, the memory may store instructions that, when executed by the at least one processor, cause the electronic device to acquire an image of a subject using the imaging device.

According to one embodiment of the present disclosure, an electronic device (e.g., the electronic device (101, 102, 104, 300) of FIG. 1 or FIG. 3) may include an imaging device (e.g., the imaging device (400, 500, 600, 700, 800, 900, 1000) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a processor (e.g., the processor (120) of FIG. 1), and a memory (e.g., the memory (130) of FIG. 1) storing instructions that, when executed by the processor, cause the electronic device to acquire an image of a subject using the imaging device. In one embodiment, the imaging device comprises an image sensor (e.g., an image sensor (I, 230) of FIG. 2, FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), and at least seven lenses (e.g., lenses (L1, L2, L3, L4, L5, L6, L7)(s) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) aligned along an optical axis (e.g., an optical axis (O) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), wherein a first lens (e.g., an image sensor (I, 230) of FIG. 2, FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29) that is furthest from the image sensor among the at least seven lenses. And/or a lens assembly (e.g., the lens assembly (LA) of FIGS. 5, 9, 13, 17, 21, 25, and/or 29) including at least one aspherical glass lens having a defined refractive power between the first lens (L1) of FIG. 29) and the n-th lens (e.g., the seventh lens (L7) of FIGS. 5, 9, 13, 17, 21, 25, and/or 29) closest to the image sensor. In one embodiment, the lens assembly may be configured to focus or guide light incident from outside the imaging device to the image sensor. In one embodiment, the lens assembly may satisfy [Conditional Expression 4; 1.5 < f1/fn < 2.5]. Here, 'f1' may be a focal length of the first lens, and 'fn' may be a focal length of the n-th lens.

According to one embodiment, the at least seven lenses include a first lens having a negative refractive power, a second lens disposed between the first lens and the image sensor and having a positive refractive power (e.g., the second lens (L2) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a third lens disposed between the second lens and the image sensor and having a positive or negative refractive power (e.g., the third lens (L3) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a fourth lens disposed between the third lens and the image sensor and having a negative refractive power (e.g., the fourth lens (L4) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a fourth lens disposed between the fourth lens and the image sensor and having a positive refractive power or It may include a fifth lens having a negative refractive power (e.g., the fifth lens (L5) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), a sixth lens disposed between the fifth lens and the image sensor and having a positive refractive power (e.g., the sixth lens (L6) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29), and an nth lens disposed between the sixth lens and the image sensor and having a negative refractive power.

According to one embodiment, the lens assembly may satisfy [Conditional Expression 2; 1.5 < (R6-R7)/(R6+R7) < 3.5]. Here, 'R6' may be a radius of curvature of a subject-side surface of the third lens, and 'R7' may be a radius of curvature of a sensor-side surface of the third lens.

According to one embodiment, at least one of the second lens, the third lens, the fifth lens, or the sixth lens may be an aspherical glass lens having a defined refractive power.

According to one embodiment, the sensor-side surface of the first lens may be concave, the subject-side surface of the second lens may be convex, the sensor-side surface of the fourth lens may be concave, the sensor-side surface of the fifth lens may be convex, and the sensor-side surface of the nth lens may be concave.

According to one embodiment, the lens assembly may satisfy [Conditional Expression 3; 0.8 < |f4/f5| < 2.0]. Here, 'f4' may be the focal length of the fourth lens, and 'f5' may be the focal length of the fifth lens.

In one embodiment, the lens assembly can have a field of view of greater than or equal to 110 degrees and less than or equal to 130 degrees.

While this disclosure has been described by way of example and example, it should be understood that the example is intended to be illustrative and not limiting. It will be apparent to those skilled in the art that various changes in form and detail may be made without departing from the overall scope of this disclosure, including the appended claims and their equivalents.

Claims (13)

In the imaging device (400; 500; 600; 700; 800; 900; 1000), Image sensor (I; 230); and A lens assembly (LA) including at least seven lenses (L1, L2, L3, L4, L5, L6, L7) aligned along an optical axis (O) and configured to focus or guide light incident from outside the imaging device to the image sensor, At least 7 lenses above, A first lens (L1) positioned furthest from the image sensor and having negative refractive power; A second lens (L2) disposed between the first lens and the image sensor and having positive refractive power; A third lens (L3) disposed between the second lens and the image sensor and having positive or negative refractive power; A fourth lens (L4) disposed between the third lens and the image sensor and having negative refractive power; A fifth lens (L5) disposed between the fourth lens and the image sensor and having positive or negative refractive power; A sixth lens (L6) disposed between the fifth lens and the image sensor and having a defined refractive power; and A seventh lens (L7) is disposed between the sixth lens and the image sensor and has negative refractive power, The above lens assembly is an imaging device that satisfies the following [Conditional Expression 1]. [Condition 1] 1.5 < f1/f7 < 2.5 (Here, 'f1' is the focal length of the first lens, and 'f7' is the focal length of the seventh lens) An imaging device in the first paragraph, wherein the sensor-side surface of the first lens is concave, the subject-side surface of the second lens is convex, the sensor-side surface of the fourth lens is concave, the sensor-side surface of the fifth lens is convex, and the sensor-side surface of the seventh lens is concave. An imaging device according to any one of claims 1 to 2, wherein the lens assembly satisfies the following [Conditional Expression 2]. [Condition 2] 1.5 < (R6-R7)/(R6+R7) < 3.5 (Here, 'R6' is the radius of curvature of the subject-side surface of the third lens, and 'R7' is the radius of curvature of the sensor-side surface of the third lens.) An imaging device according to any one of claims 1 to 3, wherein the lens assembly satisfies the following [Conditional Expression 3]. [Condition 3] 0.8 < |f4/f5| < 2.0 (Here, 'f4' is the focal length of the fourth lens, and 'f5' is the focal length of the fifth lens) An imaging device according to any one of claims 1 to 4, wherein at least one of the second lens, the third lens, the fifth lens, or the sixth lens is a glass lens. An imaging device according to any one of claims 1 to 5, wherein at least one of the second lens, the third lens, the fifth lens, or the sixth lens is a glass lens including an aspherical surface. An imaging device according to any one of claims 1 to 6, wherein at least one of the first lens, the fourth lens, or the seventh lens is a plastic lens. An imaging device according to any one of claims 1 to 7, wherein the second lens is a glass lens including an aspherical surface. An imaging device according to any one of claims 1 to 8, wherein the third lens is a glass lens including an aspherical surface. In the 9th paragraph, the third lens is an imaging device having a defined refractive power. An imaging device according to any one of claims 1 to 10, wherein the lens assembly has a field of view of 110 degrees or more and 130 degrees or less. In any one of claims 1 to 11, An imaging device further comprising an aperture (stop) disposed between the second lens and the third lens. In electronic devices (101; 102; 104; 300), An imaging device (400; 500; 600; 700; 800; 900; 1000) according to any one of claims 1 to 12; At least one processor (120); and An electronic device comprising a memory (120) having stored therein instructions that, when executed by at least one processor, cause the electronic device to acquire an image of a subject using the imaging device.