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WO2025170235A1 - Dispositif d'imagerie et dispositif électronique comprenant celui-ci - Google Patents

Dispositif d'imagerie et dispositif électronique comprenant celui-ci

Info

Publication number
WO2025170235A1
WO2025170235A1 PCT/KR2025/000940 KR2025000940W WO2025170235A1 WO 2025170235 A1 WO2025170235 A1 WO 2025170235A1 KR 2025000940 W KR2025000940 W KR 2025000940W WO 2025170235 A1 WO2025170235 A1 WO 2025170235A1
Authority
WO
WIPO (PCT)
Prior art keywords
lens
imaging device
image sensor
refractive power
sensor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/KR2025/000940
Other languages
English (en)
Korean (ko)
Inventor
이환선
신정길
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020240020946A external-priority patent/KR20250121897A/ko
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of WO2025170235A1 publication Critical patent/WO2025170235A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B1/00—Optical elements characterised by the material of which they are made; Optical coatings for optical elements
    • G02B1/04—Optical elements characterised by the material of which they are made; Optical coatings for optical elements made of organic materials, e.g. plastics
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/18—Optical objectives specially designed for the purposes specified below with lenses having one or more non-spherical faces, e.g. for reducing geometrical aberration
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B3/00—Simple or compound lenses
    • G02B3/02—Simple or compound lenses with non-spherical faces
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64—Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B9/00—Exposure-making shutters; Diaphragms
    • G03B9/02—Diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof

Definitions

  • 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.
  • CCDs charge-coupled devices
  • CMOSs complementary metal-oxide semiconductors
  • 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.
  • 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.
  • the lens assembly may satisfy [Conditional Expression 1; 1.5 ⁇ f1/f7 ⁇ 2.5].
  • 'f1' may be the focal length of the first lens
  • 'f7' may be the focal length of the seventh lens.
  • 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.
  • 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.
  • the lens assembly may be configured to focus or guide light incident from the outside of the imaging device to the image sensor.
  • the lens assembly may satisfy [Conditional Expression 4; 1.5 ⁇ f1/fn ⁇ 2.5].
  • 'f1' may be a focal length of the first lens
  • 'fn' may be a focal length of the n-th lens.
  • 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. 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. 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. 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. 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. 1 is a block diagram of an electronic device (101) within a network environment (100) according to one embodiment of the present disclosure.
  • 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).
  • the electronic device (101) may communicate with the electronic device (104) via the server (108).
  • 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.
  • 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).
  • 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.
  • a main processor (121) e.g., a central processing unit or an application processor
  • 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
  • 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.
  • the auxiliary processor (123) e.g., an image signal processor or a communication processor
  • the auxiliary processor (123) 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.
  • 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.
  • 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).
  • an external electronic device e.g., electronic device (102)
  • 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.
  • 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)).
  • 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.
  • HDMI high definition multimedia interface
  • USB universal serial bus
  • SD card interface Secure Digital Card
  • 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)).
  • 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).
  • each lens L1, L2, L3, L4, L5, L6, L7 or lens surfaces based on the lens data presented through the [Tables] 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.
  • 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.
  • 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).
  • 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).
  • '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).
  • 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).
  • the lens assembly (LA) can be miniaturized while ensuring stable aberration control performance.
  • the calculated value by [Mathematical Formula 1] may be greater than approximately 1.6 and less than approximately 2.35.
  • the lens assembly (LA) can satisfy the condition presented by the following [Mathematical Formula 2].
  • 'R6' may be the radius of curvature of the subject-side surface (S6) of the third lens (L3)
  • 'R7' may be the radius of curvature of the sensor-side surface (S7) of the third lens (L3).
  • [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).
  • 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).
  • 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.
  • 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).
  • 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.
  • the optical performance of the lens assembly (LA) with respect to aberration control or field curvature may be stabilized.
  • the calculated value of [Mathematical Expression 2] may be greater than approximately 1.75 and less than approximately 3.0.
  • the lens assembly (LA) can satisfy the condition presented by the following [Mathematical Formula 3].
  • 'f4' may be the focal length of the fourth lens (L4)
  • 'f5' may be the focal length of the fifth lens (L5).
  • [Mathematical Expression 3] may present conditions regarding the focal lengths of the fourth lens (L4) and the fifth lens (L5).
  • the calculated value of [Mathematical Expression 3] 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.
  • the aberration control of the lens assembly (LA) may be facilitated.
  • the calculated value of [Mathematical Expression 3] may be approximately 0.85 or more and approximately 1.8 or less.
  • the second lens, the third lens, the fifth lens, and/or the sixth lens may have positive refractive power.
  • 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.
  • 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.
  • 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.
  • 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.
  • at least one of the at least seven lenses (L1, L2, L3, L4, L5, L6, L7) may be manufactured as a plastic lens.
  • 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).
  • optical performance such as aberration control or field curvature can be improved or stabilized.
  • 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.
  • 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 ⁇ m or less.
  • 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.
  • 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].
  • the symbol '*' attached to the reference number of the lens surface may refer to an aspherical lens surface.
  • 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
  • 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.
  • 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.
  • 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].
  • 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.
  • 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) 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
  • 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.
  • 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].
  • 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.
  • 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].
  • 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.
  • 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].
  • 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.
  • 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].
  • 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
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • an electronic device e.g., an electronic device (101, 102, 104, 300) of FIG. 1 or FIG. 3
  • 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
  • an optical axis e.g., an optical axis (O) of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG.
  • 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.
  • 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.
  • 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
  • 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
  • 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.
  • 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
  • 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.
  • the lens assembly may satisfy [Conditional Expression 1; 1.5 ⁇ f1/f7 ⁇ 2.5].
  • 'f1' may be the focal length of the first lens
  • 'f7' may be the focal length of the seventh lens.
  • 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
  • the sensor-side surface of the seventh lens may be concave.
  • the lens assembly may satisfy [Conditional Expression 3; 0.8 ⁇
  • 'f4' may be the focal length of the fourth lens
  • 'f5' may be the focal length of the fifth lens.
  • 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.
  • At least one of the first lens, the fourth lens, or the seventh lens may be a plastic lens.
  • the third lens may be a glass lens including an aspherical surface.
  • the third lens may have a defined refractive power.
  • 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.
  • a stop e.g., the stop of FIG. 5, FIG. 9, FIG. 13, FIG. 17, FIG. 21, FIG. 25, and/or FIG. 29
  • an electronic device 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).
  • 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.
  • an electronic device 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.
  • the imaging device comprises an image sensor (e.g., an image sensor (I, 230) of FIG.
  • 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.
  • 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.
  • 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.
  • 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
  • an nth lens disposed between the sixth lens and
  • the lens assembly may satisfy [Conditional Expression 2; 1.5 ⁇ (R6-R7)/(R6+R7) ⁇ 3.5].
  • 'R6' may be a radius of curvature of a subject-side surface of the third lens
  • 'R7' may be a radius of curvature of a sensor-side surface of the third lens.
  • 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
  • the sensor-side surface of the nth lens may be concave.
  • the lens assembly may satisfy [Conditional Expression 3; 0.8 ⁇
  • 'f4' may be the focal length of the fourth lens
  • 'f5' may be the focal length of the fifth lens.
  • 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.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

Selon un mode de réalisation de la présente divulgation, un dispositif d'imagerie et/ou un dispositif électronique le comprenant peuvent comprendre : un capteur d'image ; et un ensemble lentille qui comprend au moins sept lentilles alignées le long de l'axe optique et est configuré pour focaliser ou guider la lumière incidente depuis l'extérieur du dispositif d'imagerie, vers le capteur d'image. Dans un mode de réalisation, les au moins sept lentilles peuvent comprendre : une première lentille disposée la plus éloignée du capteur d'image et ayant une réfringence négative ; une deuxième lentille disposée entre la première lentille et le capteur d'image et ayant une réfringence positive ; une troisième lentille disposée entre la deuxième lentille et le capteur d'image et ayant une réfringence positive ou une réfringence négative ; une quatrième lentille disposée entre la troisième lentille et le capteur d'image et ayant une réfringence négative ; une cinquième lentille disposée entre la quatrième lentille et le capteur d'image et ayant une réfringence positive ou une réfringence négative ; une sixième lentille disposée entre la cinquième lentille et le capteur d'image et ayant une réfringence positive ; et une septième lentille disposée entre la sixième lentille et le capteur d'image et ayant une réfringence négative. Dans un mode de réalisation, l'ensemble lentille peut satisfaire 1,5 < f1/f7 < 2,5, qui est une expression conditionnelle liée à une longueur focale 'f1' de la première lentille et à une longueur focale 'f7' de la septième lentille. L'invention peut également concerner divers autres modes de réalisation.
PCT/KR2025/000940 2024-02-05 2025-01-16 Dispositif d'imagerie et dispositif électronique comprenant celui-ci Pending WO2025170235A1 (fr)

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KR20240017672 2024-02-05
KR10-2024-0017672 2024-02-05
KR10-2024-0020946 2024-02-14
KR1020240020946A KR20250121897A (ko) 2024-02-05 2024-02-14 촬상 장치 및 그를 포함하는 전자 장치

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013195637A (ja) * 2012-03-19 2013-09-30 Ricoh Co Ltd 結像レンズ、撮像装置および情報装置
US20150103418A1 (en) * 2013-02-28 2015-04-16 Olympus Medical Systems Corp. Objective Optical System
JP2016062019A (ja) * 2014-09-19 2016-04-25 富士フイルム株式会社 撮像レンズおよび撮像装置
US20160320590A1 (en) * 2015-04-30 2016-11-03 Fujifilm Corporation Imaging lens and imaging apparatus
KR20220082537A (ko) * 2020-12-10 2022-06-17 엘지이노텍 주식회사 광학계 및 이를 포함하는 카메라 모듈

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013195637A (ja) * 2012-03-19 2013-09-30 Ricoh Co Ltd 結像レンズ、撮像装置および情報装置
US20150103418A1 (en) * 2013-02-28 2015-04-16 Olympus Medical Systems Corp. Objective Optical System
JP2016062019A (ja) * 2014-09-19 2016-04-25 富士フイルム株式会社 撮像レンズおよび撮像装置
US20160320590A1 (en) * 2015-04-30 2016-11-03 Fujifilm Corporation Imaging lens and imaging apparatus
KR20220082537A (ko) * 2020-12-10 2022-06-17 엘지이노텍 주식회사 광학계 및 이를 포함하는 카메라 모듈

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