WO2021025357A1 - Camera device and terminal comprising same - Google Patents

Abstract

The present invention relates to a camera device and a terminal comprising same. An optical correction device according to an embodiment of the present invention comprises: an optical correction device comprising a glass and a liquid lens; a lens device disposed under the optical correction device; an image sensor disposed under the lens device and converting light that has passed through the lens device into an electric signal, wherein the optical correction device changes the traveling direction of light transmitted through the glass on the basis of the applied electric signal, and the lens device receives light from the optical correction device and transmits the light to the image sensor. Accordingly, it is possible to implement the optical correction device simply for compensating for camera shake.

Description

Camera device and terminal having same

The present invention relates to a camera device and a terminal having the same, and more particularly, to a camera device capable of implementing an optical correction device for simply compensating hand shake, and a terminal having the same.

The camera device is a device for photographing an image. Recently, as camera devices are employed in mobile terminals, efforts are being made to improve image quality along with miniaturization of the camera devices.

Consequently, in order to improve the image quality of the camera device, it is necessary to increase the size of the image sensor.

On the other hand, in order to increase the size of the image sensor and implement the auto focus function and the hand shake prevention function, the size of the camera device must be increased.

An object of the present invention is to provide a camera device capable of implementing an optical correction device for simply compensating for hand-shake and a terminal having the same.

Another object of the present invention is to provide a camera device capable of implementing an optical correction device for compensating hand shake simply even when the size of an image sensor is varied, and a terminal having the same.

A camera device and a terminal including the same according to an embodiment of the present invention for achieving the above object include an optical correction device including a glass and a liquid lens, a lens device disposed under the optical correction device, and a lens device. It is disposed at the bottom and includes an image sensor that converts the light that has passed through the lens device into an electrical signal, the optical correction device, based on the applied electrical signal, to change the traveling direction of the light transmitted through the glass, the lens device , Receives the light from the optical correction device, and transmits it to the image sensor.

On the other hand, the optical correction apparatus includes a glass, a liquid lens disposed under the glass, a substrate disposed under the liquid lens, a plurality of coils disposed on the side of the liquid lens, and a plurality of coils attached to a part of the substrate. A connection member and a plurality of magnets each contacting a plurality of connection members, and spaced apart from and opposed to the coil may be provided.

Meanwhile, when an electric signal is applied to at least one of the plurality of coils, the distance between the first coil and the first magnet is changed to the first distance, and the distance between the second coil and the second magnet is smaller than the first distance. The second distance is varied, and the thickness of the liquid lens may be varied based on the first distance and the second distance.

Meanwhile, the optical correction apparatus may vary the thickness of the liquid lens based on the applied electric signal, and may change the traveling direction of light transmitted through the glass through the liquid lens having the variable thickness.

On the other hand, when the camera device is fixed, the first point and the second point of the external object are matched to the first area and the second area of the image sensor, respectively, based on the light passing through the liquid lens, and the camera device is When partly moved or partly tilted, the thickness of the liquid lens in the optical correction device is varied, and the first point and the second point of the external object are based on the light passing through the liquid lens whose thickness is varied, respectively, of the image sensor. The first area and the second area may be matched.

On the other hand, when the camera device is fixed, light from the outside passes through the liquid lens without changing the propagation direction of the light and enters the image sensor. When the camera device is partially tilted in the first direction, the liquid in the optical correction device Since the thickness of the lens is variable, light from the outside is tilted in the first direction by the tilting angle, and light tilted from the liquid lens may be incident on the image sensor.

On the other hand, the optical correction device includes a glass, a liquid disposed under the glass, a plurality of insulators disposed on the side of the liquid, a common electrode disposed spaced apart from the plurality of insulators, and a substrate disposed under the liquid. , It may include a plurality of electrodes in contact with the substrate.

On the other hand, the optical correction apparatus may include a plurality of conductive lines electrically connected to the plurality of electrodes, respectively, and a plurality of contact members each contacting one end of the plurality of conductive lines.

Meanwhile, the plurality of contact members may include a magnet.

On the other hand, the plurality of contact members includes a metal member, and electrical signals applied to the plurality of metal members are respectively applied to the plurality of electrodes through each of the plurality of conductive lines, and electricity applied to the plurality of electrodes respectively. Based on the signal, the curvature of the liquid can be varied.

On the other hand, when the camera device is fixed, the first distance between the first contact member and the common electrode among the plurality of contact members and the second distance between the second contact member and the common electrode are constant, and the camera device partially moves or , When the part is tilted, the third distance between the first contact member and the common electrode and the fourth distance between the second contact member and the common electrode are different from each other.

Meanwhile, when the camera device is fixed, the first point and the second point of the external object are matched to the first area and the second area of the image sensor, respectively, based on the light passing through the liquid, and the camera device is partially When the liquid is moved or partially tilted, the thickness of the liquid in the optical correction device is varied, and the first point and the second point of the external object are based on the light passing through the liquid whose thickness is varied, and each of the first regions of the image sensor And, it may be matched to the second area.

On the other hand, when the camera device is fixed, light from the outside passes through the liquid without changing the propagation direction of the light and enters the image sensor. When the camera device is partially tilted in the first direction, the liquid in the optical correction device Since the thickness is variable, light from the outside is tilted in the first direction by the tilting angle, and light tilted from the liquid may be incident to the image sensor.

On the other hand, the refractive index of liquid is greater than that of glass, and the refractive index of liquid is greater than that of the substrate.

Meanwhile, the thickness of the liquid is varied according to an applied electrical signal, and the thickness of the glass and the thickness of the substrate may be constant.

Meanwhile, a camera device and a terminal including the same according to an embodiment of the present invention may further include a lens driving unit that operates to move at least one lens in the lens device.

Meanwhile, the lens driving unit may include a magnet disposed on a side of the lens device, a coil spaced apart from the magnet, and a Hall sensor disposed between the magnet and the coil.

Meanwhile, the optical correction device may operate as a first module, and the lens device and the image sensor may operate as a second module separate from the first module.

Meanwhile, as the size of the image sensor increases, the size of the lens device and the size of the liquid in the optical correction device may increase.

Meanwhile, the terminal according to an embodiment of the present invention further includes a frame, and a glass of the camera device may be disposed in an opening formed in the frame.

On the other hand, the glass may protrude more outward than the frame.

A camera device and a terminal having the same according to an embodiment of the present invention include an optical correction device including a glass and a liquid lens, a lens device disposed under the optical correction device, and a lens device disposed under the lens device. It includes an image sensor for converting the light passing through the device into an electrical signal, the optical correction device, based on the applied electrical signal, the traveling direction of the light transmitted through the glass is variable, and the lens device, from the optical correction device It receives light and transmits it to the image sensor. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake. In particular, by performing hand shake compensation using a liquid lens on the upper portion of the lens device instead of performing hand shake compensation for the lens device, it is possible to considerably reduce the driving force during hand shake compensation. In addition, even when the size of the image sensor is varied, it is possible to implement an optical correction device for easily compensating for camera shake.

On the other hand, the optical correction apparatus includes a glass, a liquid lens disposed under the glass, a substrate disposed under the liquid lens, a plurality of coils disposed on the side of the liquid lens, and a plurality of coils attached to a part of the substrate. A connection member and a plurality of magnets each contacting a plurality of connection members, and spaced apart from and opposed to the coil may be provided. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, when an electric signal is applied to at least one of the plurality of coils, the distance between the first coil and the first magnet is changed to the first distance, and the distance between the second coil and the second magnet is smaller than the first distance. The second distance is varied, and the thickness of the liquid lens may be varied based on the first distance and the second distance. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, the optical correction apparatus may vary the thickness of the liquid lens based on the applied electric signal, and may change the traveling direction of light transmitted through the glass through the liquid lens having the variable thickness. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, when the camera device is fixed, the first point and the second point of the external object are matched to the first area and the second area of the image sensor, respectively, based on the light passing through the liquid lens, and the camera device is When partly moved or partly tilted, the thickness of the liquid lens in the optical correction device is varied, and the first point and the second point of the external object are based on the light passing through the liquid lens whose thickness is varied, respectively, of the image sensor. The first area and the second area may be matched. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, when the camera device is fixed, light from the outside passes through the liquid lens without changing the propagation direction of the light and enters the image sensor. When the camera device is partially tilted in the first direction, the liquid in the optical correction device Since the thickness of the lens is variable, light from the outside is tilted in the first direction by the tilting angle, and light tilted from the liquid lens may be incident on the image sensor. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, the optical correction device includes a glass, a liquid disposed under the glass, a plurality of insulators disposed on the side of the liquid, a common electrode disposed spaced apart from the plurality of insulators, and a substrate disposed under the liquid. , It may include a plurality of electrodes in contact with the substrate. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, the optical correction apparatus may include a plurality of conductive lines electrically connected to the plurality of electrodes, respectively, and a plurality of contact members each contacting one end of the plurality of conductive lines. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, the plurality of contact members includes a metal member, and electrical signals applied to the plurality of metal members are respectively applied to the plurality of electrodes through each of the plurality of conductive lines, and electricity applied to the plurality of electrodes respectively. Based on the signal, the curvature of the liquid can be varied. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, when the camera device is fixed, the first distance between the first contact member and the common electrode among the plurality of contact members and the second distance between the second contact member and the common electrode are constant, and the camera device partially moves or , When the part is tilted, the third distance between the first contact member and the common electrode and the fourth distance between the second contact member and the common electrode are different from each other. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, when the camera device is fixed, the first point and the second point of the external object are matched to the first area and the second area of the image sensor, respectively, based on the light passing through the liquid, and the camera device is partially When the liquid is moved or partially tilted, the thickness of the liquid in the optical correction device is varied, and the first point and the second point of the external object are based on the light passing through the liquid whose thickness is varied, and each of the first regions of the image sensor And, it may be matched to the second area. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, when the camera device is fixed, light from the outside passes through the liquid without changing the propagation direction of the light and enters the image sensor. When the camera device is partially tilted in the first direction, the liquid in the optical correction device Since the thickness is variable, light from the outside is tilted in the first direction by the tilting angle, and light tilted from the liquid may be incident to the image sensor. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, the refractive index of liquid is greater than that of glass, and the refractive index of liquid is greater than that of the substrate. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, the thickness of the liquid is varied according to an applied electrical signal, and the thickness of the glass and the thickness of the substrate may be constant. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, a camera device and a terminal including the same according to an embodiment of the present invention may further include a lens driving unit that operates to move at least one lens in the lens device. Accordingly, it is possible to implement auto focus of the lens device.

Meanwhile, the lens driving unit may include a magnet disposed on a side of the lens device, a coil spaced apart from the magnet, and a Hall sensor disposed between the magnet and the coil. Accordingly, it is possible to implement auto focus of the lens device.

Meanwhile, the optical correction device may operate as a first module, and the lens device and the image sensor may operate as a second module separate from the first module. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, as the size of the image sensor increases, the size of the lens device and the size of the liquid in the optical correction device may increase. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

Meanwhile, the terminal according to an embodiment of the present invention further includes a frame, and a glass of the camera device may be disposed in an opening formed in the frame. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

On the other hand, the glass may protrude more outward than the frame. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake.

1A is a front perspective view of a mobile terminal, which is an example of a terminal according to an embodiment of the present invention.

1B is a rear perspective view of the mobile terminal shown in FIG. 1A.

2 is a block diagram of the mobile terminal of FIG. 1.

3A is an inner cross-sectional view of the camera device of FIG. 2.

3B is a block diagram illustrating a camera device and a control unit of FIG. 2.

4A to 4B are various examples of internal block diagrams of the camera device of FIG. 2.

5A to 5C are views referenced for description of a camera device related to the present invention.

7A is a diagram illustrating a camera device according to an embodiment of the present invention.

7B to 8B are views referred to in the description of FIG. 7A.

9A is a diagram illustrating a camera device according to another embodiment of the present invention.

9B is a diagram referred to in the description of FIG. 9A.

10A to 12B are views referenced in the description of FIG. 7A or 9A.

13A to 13B are views for explaining a driving method of the liquid lens of FIG. 7A.

14A to 14C are views showing the structure of the liquid lens of FIG. 7A.

15A to 15E are views for explaining variable lens curvature of the liquid lens of FIG. 7A.

16A to 16B are various examples of internal block diagrams of a light conversion unit.

Hereinafter, the present invention will be described in more detail with reference to the drawings.

The suffixes "module" and "unit" for the constituent elements used in the following description are given in consideration of only the ease of writing in the present specification, and do not impart a particularly important meaning or role by themselves. Therefore, the "module" and "unit" may be used interchangeably with each other.

The camera device according to an embodiment of the present invention can be employed in a terminal. For example, the terminal can be employed in a mobile terminal such as a smart phone, a robot, a robot cleaner, a drone, a vehicle, and the like.

1A is a front perspective view of a mobile terminal, which is an example of a terminal according to an embodiment of the present invention, and FIG. 1B is a rear perspective view of the mobile terminal shown in FIG. 1A.

Referring to FIG. 1A, a case forming the exterior of the mobile terminal 100 is formed by a front case 100-1 and a rear case 100-2. Various electronic components may be embedded in the space formed by the front case 100-1 and the rear case 100-2.

Specifically, the display 180, the first sound output module 153a, the first camera device 195a, and the first to third user input units 130a, 130b, 130c are disposed on the front case 100-1. I can. Further, a fourth user input unit 130d, a fifth user input unit 130e, and first to third microphones 123a, 123b, and 123c may be disposed on the side of the rear case 100-2.

In the display 180, the touch pads are overlapped in a layered structure, so that the display 180 can operate as a touch screen.

The first sound output module 153a may be implemented in the form of a receiver or speaker. The first camera device 195a may be implemented in a form suitable for capturing an image or video of a user or the like. In addition, the microphone 123 may be implemented in a form suitable for receiving a user's voice or other sound.

The first to fifth user input units 130a, 130b, 130c, 130d, and 130e and sixth and seventh user input units 130f and 130g to be described later may be collectively referred to as a user input unit 130.

The first to second microphones 123a and 123b are disposed on the upper side of the rear case 100-2, that is, on the upper side of the mobile terminal 100, for collecting audio signals, and the third microphone 123c, It may be disposed under the rear case 100-2, that is, under the mobile terminal 100 to collect audio signals.

Referring to FIG. 1B, a second camera device 195b, a third camera device 195c, and a fourth microphone (not shown) may be additionally mounted on the rear side of the rear case 100-2, and the rear case Sixth and seventh user input units 130f and 130g and an interface unit 175 may be disposed on the side of (100-2).

The second camera device 195b may have a photographing direction substantially opposite to the first camera device 195a, and may have different pixels from the first camera device 195a. A flash (not shown) and a mirror (not shown) may be additionally disposed adjacent to the second camera device 195b. In addition, another camera may be further installed adjacent to the second camera device 195b to be used for capturing a 3D stereoscopic image.

A second sound output module (not shown) may be additionally disposed on the rear case 100-2. The second sound output module may implement a stereo function together with the first sound output module 153a, and may be used for a call in a speaker phone mode.

A power supply unit 190 for supplying power to the mobile terminal 100 may be mounted on the rear case 100-2 side. The power supply unit 190 is, for example, a rechargeable battery, and may be detachably coupled to the rear case 100-2 for charging or the like.

The fourth microphone 123d may be disposed on the front side of the rear case 100-2, that is, on the back side of the mobile terminal 100, to collect audio signals.

2 is a block diagram of the mobile terminal of FIG. 1.

2, the mobile terminal 100 includes a wireless communication unit 110, an audio/video (A/V) input unit 120, a user input unit 130, a sensing unit 140, an output unit 150, and a memory. 160, an interface unit 175, a control unit 170, and a power supply unit 190 may be included. When such components are implemented in an actual application, two or more components may be combined into one component, or one component may be subdivided into two or more components as necessary.

The wireless communication unit 110 may include a broadcast receiving module 111, a mobile communication module 113, a wireless Internet module 115, a short range communication module 117, and a GPS module 119.

The broadcast receiving module 111 may receive at least one of a broadcast signal and broadcast related information from an external broadcast management server through a broadcast channel. The broadcast signal and/or broadcast related information received through the broadcast receiving module 111 may be stored in the memory 160.

The mobile communication module 113 may transmit and receive a wireless signal with at least one of a base station, an external terminal, and a server on a mobile communication network. Here, the wireless signal may include a voice call signal, a video call signal, or various types of data according to transmission/reception of text/multimedia messages.

The wireless Internet module 115 refers to a module for wireless Internet access, and the wireless Internet module 115 may be built-in or external to the mobile terminal 100.

The short-range communication module 117 refers to a module for short-range communication. As a short-range communication technology, Bluetooth, Radio Frequency Identification (RFID), infrared data association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), and the like can be used.

The GPS (Global Position System) module 119 receives location information from a plurality of GPS satellites.

The A/V (Audio/Video) input unit 120 is for inputting an audio signal or a video signal, and may include a camera device 195 and a microphone 123.

The camera device 195 may process an image frame such as a still image or a video obtained by an image sensor in a video call mode or a photographing mode. In addition, the processed image frame may be displayed on the display 180.

The image frame processed by the camera device 195 may be stored in the memory 160 or transmitted to the outside through the wireless communication unit 110. Two or more camera devices 195 may be provided depending on the configuration aspect of the terminal.

The microphone 123 may receive an external audio signal by a microphone in a display off mode, for example, a call mode, a recording mode, or a voice recognition mode, and process it as electrical voice data.

Meanwhile, a plurality of microphones 123 may be disposed at different positions. The audio signal received from each microphone may be processed by the controller 170 or the like.

The user input unit 130 generates key input data that the user inputs to control the operation of the terminal. The user input unit 130 may include a key pad, a dome switch, a touch pad (positive pressure/power failure), etc., through which a command or information can be inputted by a user's pressing or touching operation. In particular, when the touch pad forms a mutual layer structure with the display 180 to be described later, this may be referred to as a touch screen.

The sensing unit 140 detects the current state of the mobile terminal 100, such as an open/closed state of the mobile terminal 100, a location of the mobile terminal 100, and whether a user is in contact, and controls the operation of the mobile terminal 100. It can generate a sensing signal.

The sensing unit 140 may include a proximity sensor 141, a pressure sensor 143, a motion sensor 145, a touch sensor 146, and the like.

The proximity sensor 141 may detect the presence or absence of an object approaching the mobile terminal 100 or an object existing in the vicinity of the mobile terminal 100 without mechanical contact. In particular, the proximity sensor 141 may detect a proximity object by using a change in an AC magnetic field or a change in a static magnetic field, or by using a rate of change in capacitance.

The pressure sensor 143 may detect whether pressure is applied to the mobile terminal 100 and the magnitude of the pressure.

The motion sensor 145 may detect the position or movement of the mobile terminal 100 using an acceleration sensor or a gyro sensor.

The touch sensor 146 may detect a touch input by a user's finger or a touch input by a specific pen. For example, when a touch screen panel is disposed on the display 180, the touch screen panel may include a touch sensor 146 for sensing location information and intensity information of a touch input. The sensing signal sensed by the touch sensor 146 may be transmitted to the controller 170.

The output unit 150 is for outputting an audio signal, a video signal, or an alarm signal. The output unit 150 may include a display 180, an audio output module 153, an alarm unit 155, and a haptic module 157.

The display 180 displays and outputs information processed by the mobile terminal 100. For example, when the mobile terminal 100 is in a call mode, a user interface (UI) or a graphical user interface (GUI) related to a call is displayed. In addition, when the mobile terminal 100 is in a video call mode or a photographing mode, the photographed or received images can be displayed individually or simultaneously, and a UI and a GUI are displayed.

Meanwhile, as described above, when the display 180 and the touch pad form a mutual layer structure to form a touch screen, the display 180 may be used as an input device capable of inputting information by a user's touch in addition to an output device. I can.

The sound output module 153 may output audio data received from the wireless communication unit 110 or stored in the memory 160 in a call signal reception, a call mode or a recording mode, a voice recognition mode, a broadcast reception mode, and the like. In addition, the sound output module 153 outputs audio signals related to functions performed in the mobile terminal 100, for example, a call signal reception sound, a message reception sound, and the like. The sound output module 153 may include a speaker, a buzzer, and the like.

The alarm unit 155 outputs a signal for notifying the occurrence of an event in the mobile terminal 100. The alarm unit 155 outputs a signal for notifying the occurrence of an event in a form other than an audio signal or a video signal. For example, a signal can be output in the form of vibration.

The haptic module 157 generates various tactile effects that a user can feel. A typical example of the tactile effect generated by the haptic module 157 is a vibration effect. When the haptic module 157 generates vibration through a tactile effect, the intensity and pattern of the vibration generated by the haptic module 157 can be converted, and different vibrations may be synthesized and output or sequentially output.

The memory 160 may store a program for processing and control of the control unit 170, and provides a function for temporary storage of input or output data (eg, phonebook, message, still image, video, etc.). You can also do it.

The interface unit 175 serves as an interface with all external devices connected to the mobile terminal 100. The interface unit 175 may receive data from an external device or receive power and transmit the data to each component inside the mobile terminal 100, and transmit data inside the mobile terminal 100 to an external device.

The control unit 170 typically controls the operation of each unit to control the overall operation of the mobile terminal 100. For example, it is possible to perform related control and processing for voice calls, data communication, and video calls. In addition, the controller 170 may include a multimedia playback module 181 for playing multimedia. The multimedia playback module 181 may be configured as hardware in the control unit 170 or may be configured as software separately from the control unit 170. Meanwhile, the controller 170 may include an application processor (not shown) for driving an application. Alternatively, the application processor (not shown) may be provided separately from the control unit 170.

In addition, the power supply unit 190 may receive external power and internal power under the control of the control unit 170 to supply power required for operation of each component.

3A is an inner cross-sectional view of the camera device of FIG. 2.

Referring to the drawings, FIG. 3A is an example of a cross-sectional view of the camera device 195.

The camera device 195 may include a stop 194, an optical correction device 192, a lens device 193, and an image sensor 820.

The stop 194 may open and close the light incident on the lens device 193.

The image sensor 820 may include an RGb filter 915 and a sensor array 911 that converts an optical signal into an electrical signal to sense RGB colors.

Accordingly, the image sensor 820 may sense and output an RGB image, respectively.

3B is a block diagram illustrating a camera device and a control unit of FIG. 2.

Referring to the drawings, the camera device 195 may include an optical correction device 192, a lens device 193, an image sensor 820, and an image processor 830.

The image processor 830 may generate an RGB image based on an electrical signal from the image sensor 820.

Meanwhile, the image sensor 820 may adjust an exposure time based on an electrical signal.

Meanwhile, the RGB image from the image processor 830 may be transmitted to the controller 170 of the mobile terminal 100.

Meanwhile, the control unit 170 of the mobile terminal 100 may output a control signal to the lens device 193 to move the lens in the lens device 193. For example, a control signal for auto focusing may be output to the lens device 193.

Meanwhile, the control unit 170 of the mobile terminal 100 may output a control signal for a camera shake prevention function in the optical correction device 192 to the optical correction device 192.

4A to 4B are various examples of internal block diagrams of the camera device of FIG. 2.

First, FIG. 4A illustrates that a gyro sensor 145c, a driving control unit (DRC), an optical correction device 192 and a lens device 193 are provided inside the camera device 195.

The gyro sensor 145c may detect movement in the first direction and movement in the second direction. In addition, the gyro sensor 145c may output motion information Sfz including a motion in the first direction and a motion in the second direction.

The driving control unit (DRC), based on the motion information (Sfz) including the first direction movement and the second direction movement from the gyro sensor (145c), the first control signal (Saca) for motion compensation, optical It can be output to the correction device 192.

Meanwhile, the driving control unit DRC may output a lens movement signal Sacb for auto focus control of the lens device 193 to the lens driving unit ACTb in the lens device 193.

The actuator ACTa may change the thickness or curvature of the liquid lens LNS based on the first control signal Saca.

The lens driver ACTb may move at least one lens in the lens device 193 based on the second control signal Sacb.

Meanwhile, the sensor unit Hsa in the optical correction device 192 may sense a change in a magnetic field to check information related to a change in thickness or curvature of the liquid lens LNS.

Meanwhile, the Hall sensor Hsb in the lens device 193 may sense a change in the magnetic field to check movement information according to the movement of at least one lens.

Specifically, the sensor unit HSa detects a change in the thickness or curvature of the liquid lens LNS based on the first magnetic field, and the Hall sensor Hsb moves at least one lens based on the second magnetic field. Detect change.

In addition, information sensed by the sensor unit HSa and the hall sensor Hsb, in particular, first and second magnetic field change information Shsa and Shsb may be input to the driving control unit DRC.

The driving control unit (DRC) may perform PI control, etc., based on control signals for motion compensation (Saca, Sacb) and motion information, particularly, first and second magnetic field change information (Shsa, Shsb). Accordingly, it is possible to accurately control the movement of the liquid lens LNS in the optical correction device 192 and at least one lens in the lens device 193.

Next, FIG. 4B is similar to FIG. 4A, but the gyro sensor 145c is provided in the motion sensor 145 in the separate sensing unit 140 in the mobile terminal 100, not in the camera device 195. There is a difference.

Accordingly, although not shown in FIG. 4B, the camera device 195 of FIG. 4B may further include an interface unit (not shown) for receiving a signal from an external gyro sensor 145c.

Meanwhile, the motion information Sfz including the first and second direction movements received from the gyro sensor 145c is input to the driving control unit DRC. The operation of the driving control unit DRC is illustrated in FIG. It may be the same as described in 4a.

5A to 5C are views referenced for description of a camera device related to the present invention.

First, (a) of FIG. 5A illustrates a lens device 193x having a first focal movement distance Fzx and an image sensor 820x having a first size Szx.

Next, FIG. 5A (b) illustrates a lens device 193y having a second focal movement distance Fzy and an image sensor 820y having a second size Szy that is larger than the first size Szx.

5A and 5A, as the size of the image sensor increases, the focal movement distance of the lens device increases.

That is, as the size of the image sensor increases, the thickness or height of the lens device increases.

Meanwhile, FIG. 5B is a diagram showing a driving amount of the optical correction device for each focal movement distance.

Referring to the drawing, when the size of the image sensor is SZ1, the focal length is Fz1, the driving amount of the optical correction device is Os1, and when the size of the image sensor is SZ2, which is larger than SZ1, the focal length is greater than Fz1. When the larger Fz2, the driving amount of the optical correction device is Os2 larger than Os1, and the image sensor size is SZ3 larger than SZ2, the focal movement distance is Fz3 larger than Fz2, and the driving amount of the optical correction device is Os3 larger than Os2. Illustrate that.

That is, according to FIG. 5B, as the size of the image sensor increases, the focal movement distance of the lens device 193x increases.

On the other hand, when the optical correction device for preventing hand shake operates to compensate for hand shake for the lens device 193x, similar to the automatic focus adjustment, the driving amount of the optical correction device is proportional to the square of the focal movement distance. do.

5C is a diagram showing a driving force versus a mass of a lens device, a driving force versus a moving distance, and the like.

First, (a) of FIG. 5C is a diagram showing a graph (CVa) of the driving force versus the mass of the lens device.

Referring to the drawings, when the mass of the lens device increases from M1 to M2, the driving force F increases proportionally from F1 to F2.

Next, FIG. 5C(b) is a diagram showing a graph CVb of the driving force versus the moving distance of the lens device.

Referring to the drawings, when the moving distance of the lens device increases from D1 to D2, the driving force F increases in proportion from Fa to Fb.

Next, FIG. 5C (c) is a diagram showing a graph (CVc) of the driving force versus the mass and the moving distance of the lens device.

Referring to the drawings, when the product of the mass and the moving distance of the lens device increases from MD1 to MD2, the driving force F increases from FM1 to FM2. In particular, in the case of FIG. 5C, FM1 or FM2 is proportional to the square of MD1 or the square of MD2.

That is, according to FIG. 5C, as the size of the image sensor increases, the mass and the moving distance of the lens device increase.

On the other hand, when the optical correction device for preventing hand shake operates to compensate for hand shake for the lens device, similar to the automatic focus adjustment, the driving force of the optical correction device is the product of the mass of the lens device and the moving distance. Becomes proportional.

Therefore, in order to prevent hand shake, when using a VCM (Voice coil motor) optical correction device for the lens device, as the size of the image sensor increases, considerable power is consumed to provide driving force, and There are disadvantages such as having to secure a considerable amount of space.

6A is a view showing a conventional camera device 195x including an image sensor of a first size Szx and an optical correction device of a VCM method.

Referring to the drawings, the camera device 195x of FIG. 6A is disposed on one side of an image sensor 820x of a first size (Szx), a lens device 193x that transmits light to the image sensor, and a lens device 193x. And a lens driver (CIRx) that moves a lens in the lens device 193x, and is disposed on the other side of the lens device 193x, and includes an optical correction device COIx for compensating for hand shake of the lens device 193x. Illustrate.

6B is a view showing a conventional camera device 195y including an image sensor of a second size Szy larger than the first size Szx and an optical correction device of the VCM method.

Referring to the drawings, the camera device 195y of FIG. 6B includes an image sensor 820y having a second size Szy larger than a first size Szx, a lens device 193y transmitting light to the image sensor, and a lens. A lens driver (CIRy) that is disposed on one side of the device 193y and moves a lens in the lens device 193y, and is disposed on the other side of the lens device 193y, and is optically corrected for compensation of hand shake of the lens device 193y. It illustrates the inclusion of a device (COIy).

Meanwhile, in the drawing, it is exemplified that the length of the lens driving unit CIRy is Wy.

6C illustrates that the camera device 195y of FIG. 6B is employed in the mobile terminal 100y.

Referring to the drawings, as the size of the image sensor 820y increases, the length of the optical correction device COIy increases, and accordingly, the thickness of the camera device 195y disposed on the rear surface of the mobile terminal 100y is , It is affected by the length Wy of the lens driver (CIRy).

That is, as the size of the image sensor 820y increases, the thickness of the camera device 195y disposed on the rear surface of the mobile terminal 100y increases, and as a result, the thickness DDy of the mobile terminal 100y increases. There is this.

Accordingly, in the present invention, despite an increase in the size of the image sensor, while reducing the driving force of the optical correction device, a simple optical correction device for camera shake compensation is proposed.

To this end, the present invention proposes an optical correction device that performs separate hand shake compensation, not hand shake compensation for a lens device. In particular, a liquid lens-based optical correction device disposed on the top of the lens device is proposed. This will be described with reference to Fig. 7A or less.

7A is a diagram illustrating a camera device according to an embodiment of the present invention, and FIGS. 7B to 8B are views referenced in the description of FIG. 7A.

First, referring to FIG. 7A, the camera device 195 according to an embodiment of the present invention may be implemented as a rear camera of the mobile terminal 100.

In particular, the opening OP is formed on the rear frame FR of the mobile terminal 100, and the glass CVG of the camera device 195 may be disposed in the opening OP formed in the frame FR. .

The camera device 195 according to the embodiment of the present invention includes an optical correction device 192 including a glass (CVG) and a liquid lens (LNS), and a lens device 193 disposed under the optical correction device 192. ), and an image sensor 820 disposed under the lens device 193 to convert light that has passed through the lens device 193 into an electrical signal.

The optical correction device 192 is located on the top of the lens device 193, to reduce driving force, to prevent hand shake, to control the operation of the lens device 193, but not the thickness of the liquid lens (LNS) or The refractive index can be controlled. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake. Further, it is possible to significantly reduce the driving force at the time of compensating for hand shake. In addition, even when the size of the image sensor is varied, it is possible to implement an optical correction device for easily compensating for camera shake.

To this end, the optical correction device 192 includes a glass CVG, a liquid lens LNS disposed under the glass CVG, a substrate SUB disposed under the liquid lens LNS, and a liquid Each of the plurality of coils COLa to COLd disposed on the side of the lens LNS, the plurality of connecting members BAa to BAd attached to a part of the substrate SUB, and the plurality of connecting members BAa to BAd, respectively A plurality of magnets MGTa-MGTd that are in contact and are spaced apart from and opposed to the coils COLa-COLd may be provided.

7B is a diagram illustrating a top view of the optical correction device 192.

Referring to the drawings, a circular partition wall WA is disposed around a circular liquid lens LNS, and a plurality of connection members BAa to BAd are provided in a partial area of the substrate SUB under the partition wall WA. Attached.

In this case, the plurality of connection members BAa to BAd may extend in the outer direction of the circular partition wall WA. The plurality of connection members BAa to BAd may extend in four directions.

In addition, a plurality of magnets MGTa to MGTd spaced apart from each other in four directions may be disposed at extended ends of the plurality of connection members BAa to BAd.

Meanwhile, a plurality of coils COLa to COLd spaced apart by a predetermined distance DD may be disposed above the plurality of magnets MGTa to MGTd.

Meanwhile, the plurality of magnets MGTa to MGTd and the plurality of coils COLa to COLd may operate as actuators ACTa for varying the thickness or refractive index of the liquid lens LNS.

That is, around the circular liquid lens (LNS), a circular partition wall (WA) is disposed, on the side of the partition wall (WA), a plurality of coils (COLa to COLd) are disposed, and a plurality of coils (COLa to COLd) Silver may be spaced apart from and opposed to each of the plurality of magnets MGTa-MGTd.

Specifically, the first coil COLa is disposed to be spaced apart from the first magnet MGTa by a predetermined distance DD, and the second coil COLb is arranged at a predetermined distance DD from the second magnet MGTb. It is arranged to be spaced apart, and the third coil COLc is disposed to be spaced apart from the third magnet MGTc by a predetermined distance DD, and the fourth coil COLd is separated from the fourth magnet MGTd and a predetermined distance DD. ) Can be spaced apart.

On the other hand, when the camera device 195 is fixed, an electrical signal may not be applied to the plurality of coils COLa to COLd, and between the plurality of coils COLa to COLd and the plurality of magnets MGTa to MGTd. Each distance may maintain a certain distance DD.

That is, when the camera device 195 is fixed, light from the outside passes through the liquid lens LNS without change in the traveling direction of light, and is incident on the image sensor 820.

Meanwhile, when the camera device 195 is moved or tilted in the first direction, the driving control unit DRC may output a control signal for motion compensation based on the motion information from the gyro sensor 145c. .

Accordingly, a control signal for motion compensation may be applied to at least one of the plurality of coils COLa to COLd in the actuator ACTa.

Accordingly, when the camera device 195 is moved or tilted in the first direction, an electric signal is applied to at least one of the plurality of coils COLa to COLd, so that the distance between the at least one coil and the magnet may be varied. have.

For example, when an electric signal is applied to at least one of the plurality of coils COLa to COLd, the distance between the first coil COLa and the first magnet MGTa is changed to the first distance DDa, The distance between the second coil COLb and the second magnet MGTb may be changed to a second distance DDb smaller than the first distance DDa.

Accordingly, the substrate SUB is moved or tilted based on the first distance DDa and the second distance DDb, and the thickness or refractive index of the liquid lens LNS is changed according to the movement or tilting of the substrate SUB. It can be variable.

Further, by varying the thickness or refractive index of the liquid lens LNS, the traveling direction of the light transmitted through the glass CVG is changed, and the light having the variable traveling direction can be transmitted to the lens device 193. Therefore, it is possible to simply implement the optical correction device 192 for camera shake compensation. In particular, it is possible to perform hand shake compensation independent of the lens device 193.

On the other hand, when the camera device 195 is partially tilted in the first direction, the thickness or refractive index of the liquid lens LNS in the optical correction device 192 is changed, so that light from the outside is equal to the tilting angle in the first direction. Light that is tilted to and tilted from the liquid lens LNS may be incident on the image sensor 820. Accordingly, it is possible to simply implement the optical correction device 192 for camera shake compensation.

Meanwhile, it is preferable that the refractive index of the liquid lens LNS is greater than that of the glass CVG, and the refractive index of the liquid lens LNS is greater than that of the substrate 510. Accordingly, the liquid lens LNS It is possible to change the traveling direction of light in

Meanwhile, the thickness of the liquid lens LNS is varied according to an electric signal applied to the plurality of coils COLa to COLd, and the like, and the thickness of the glass CVG and the thickness of the substrate 510 may be constant.

Meanwhile, the optical correction device 192 operates as a first module (MODa), and the lens device 193 and the image sensor 820 operate as a second module (MODb) separate from the first module (MODa). can do.

That is, when the camera device 195 is moved or tilted, the optical correction device 192, while moving or tilting, changes the traveling direction of incident light to correct hand shake, but the lens device 193 and the image While moving or tilting, the sensor 820 receives the incident light as it is without changing the traveling direction.

Meanwhile, as the size of the image sensor 820 increases, the size of the lens device 193 and the size of the liquid 530 in the optical correction device 192 may increase.

In particular, since the optical correction device 192 operating as the first module (MODa) can be separately designed, and the lens device 193 and the image sensor 820 operating as the second module (MODb) can be separately designed, Compared to Figs. 6A to 6C, the degree of design freedom is increased.

8A is a diagram illustrating camera devices 195ma to 195mc of various sizes corresponding to image sensors 920a to 902c of various sizes.

Referring to the drawings, (a) of FIG. 8A is an image sensor 920a of a first size (Sza), a lens device 793a of a first thickness (Ha) and an image sensor 920a, the thickness of Dpa and Hza. An optical correction device 192ma having a size of is illustrated.

FIG. 8A (b) shows an image sensor 920b having a second size Szb larger than the first size Sza, and a lens device 793b having a second thickness Hb larger than the first thickness Ha. An image sensor 920a, an optical correction device 192mb having a thickness of Dpa and a size of Hzb is illustrated.

Compared to FIG. 8A (a), the size of the image sensor 920b, the thickness of the lens device 793b and the image sensor 920b, and the size of the optical correction device 192mb are increased.

However, since the optical correction device 192mb includes a liquid lens, the thickness thereof may be Dpa, which may be the same as (a) of FIG. 8A.

(C) of FIG. 8A is an image sensor 920c of a third size (Szc) greater than the second size (Szb), and a lens device 793c having a third thickness (Hc) greater than the second thickness (Hb). An optical correction device 192mc having a sensor 920c, a thickness of Dpa and a size of Hzc is illustrated.

Compared with FIG. 8A (b), the size of the image sensor 920c, the thickness of the lens device 793c and the image sensor 920c, and the size of the optical correction device 192mc are increased.

However, since the optical correction device 192mc includes a liquid lens, the thickness thereof may be Dpa, which may be the same as (b) of FIG. 8A.

Meanwhile, according to FIG. 8A, the glass CVG of each camera device 195ma to 195mc may protrude more outward than the frame CSE.

8B is a diagram illustrating camera devices 195na to 195nc of various sizes corresponding to image sensors 920a to 902c of various sizes.

Referring to the drawing, (a) of FIG. 8B is an image sensor 920a having a first size Sza, a lens device 793a having a first thickness Ha, an image sensor 920a, and a thickness of Dpa and Hza. An optical correction device 192na having a size of is illustrated.

FIG. 8B(b) shows an image sensor 920b having a second size Szb larger than the first size Sza, and a lens device 793b having a second thickness Hb larger than the first thickness Ha. An image sensor 920a, an optical correction device 192nb having a thickness of Dpa and a size of Hzb is illustrated.

(C) of FIG. 8B is an image sensor 920c having a third size (Szc) greater than the second size (Szb), and a lens device 793c having a third thickness (Hc) greater than the second thickness (Hb). An optical correction device 192nc having a sensor 920c, a thickness of Dpa and a size of Hzc is illustrated.

The camera devices 195na to 195nc of FIG. 8B are almost similar to the camera devices 195ma to 195mc of FIG. 8A, but the glass CVG of each camera device 195na to 195nc is the same height as the frame CSE. The difference is that it does not protrude further from the outside.

9A is a view showing a camera device according to another embodiment of the present invention, and FIG. 9B is a view referred to in the description of FIG. 9A.

First, referring to FIG. 9A, the camera device 195s according to another embodiment of the present invention may be implemented as a rear camera of the mobile terminal 100.

In particular, the opening OP is formed on the rear frame FR of the mobile terminal 100, and the glass CVG of the camera device 195s may be disposed in the opening OP formed in the frame FR. .

The camera device 195s according to another embodiment of the present invention includes an optical correction device 192s including glass (CVG) and a liquid 530, and a lens device 193 disposed under the optical correction device 192s. ), and an image sensor 820 disposed under the lens device 193 to convert light that has passed through the lens device 193 into an electrical signal.

The optical correction device 192s is located on the top of the lens device 193, to reduce driving force, to prevent hand shake, to control the operation of the lens device 193, but not the thickness or refractive index of the liquid 530 Can be controlled. Accordingly, it is possible to implement an optical correction device for simply compensating for camera shake. Further, it is possible to significantly reduce the driving force at the time of compensating for hand shake. In addition, even when the size of the image sensor is varied, it is possible to implement an optical correction device for easily compensating for camera shake.

To this end, the optical correction device 192s includes a glass (CVG), a liquid 530 disposed under the glass (CVG), and a plurality of insulators (550a to 550d) disposed on the side of the liquid 530 Wow, the common electrode 520 disposed to be spaced apart from the plurality of insulators 550a to 550d, the substrate 510 disposed under the liquid 530, and a plurality of substrates contacting the substrate 510 It may include electrodes 540a to 540d.

9B is a diagram showing a top view of the optical correction device 192s.

Referring to the drawing, a plurality of insulators (550a to 550d) are disposed on the side of the circular liquid 530, and a plurality of insulators (550a to 550d) are common to a partial region of the substrate 515 under the The electrode 520 is attached.

Further, a plurality of conductive lines BAa to BAd are attached to the plurality of common electrodes 520, respectively.

In this case, the plurality of conductive lines BAa to BAd may extend in four directions of the outer periphery, respectively.

Further, a plurality of contact members (ITa to ITd) spaced apart from each other in four directions may be disposed at extended ends of the plurality of conductive lines (BAa to BAd). The plurality of contact members (ITa to ITd) may include , It may include a metal member.

Meanwhile, a common electrode 520 spaced apart by a predetermined distance DD may be disposed on the plurality of contact members ITa to ITd.

Meanwhile, the plurality of contact members ITa to ITd and the common electrode 520 may operate as an actuator ACTa for varying the thickness or refractive index of the liquid 530.

Specifically, the plurality of contact members ITa to ITd to the common electrode 520 may be disposed to be spaced apart by a predetermined distance DD, respectively.

On the other hand, when the camera device 195s is fixed, an electrical signal may not be applied to the plurality of contact members (ITa to ITd), and the plurality of contact members (ITa to ITd) and the common electrode 520 Each distance between them may maintain a predetermined distance DD.

That is, when the camera device 195s is fixed, light from the outside passes through the liquid 530 as it is without a change in the traveling direction of light, and is incident on the image sensor 820.

Meanwhile, when the camera device 195s is moved or tilted in the first direction, the driving control unit DRC may output a control signal for motion compensation based on motion information from the gyro sensor 145c. .

Accordingly, a control signal for motion compensation may be applied to at least one of the plurality of contact members ITa to ITd in the actuator ACTa.

Accordingly, when the camera device 195s is moved or tilted in the first direction, an electrical signal is applied to at least one of the plurality of contact members (ITa to ITd), and eventually, among the plurality of electrodes 540a to 540d. An electrical signal may be applied to at least one of them, so that the thickness or refractive index of the liquid 530 may be varied.

For example, when an electric signal is applied to at least one of the plurality of electrodes 540a to 540d, the thickness or the refractive index of the liquid 530 is changed, resulting in a difference between the first contact member ITa and the common electrode 520 The distance of is changed to the first distance DDa, and the distance between the second contact member ITb and the common electrode 520 may be changed to a second distance DDb smaller than the first distance DDa.

Further, by varying the thickness or refractive index of the liquid 530, the traveling direction of the light transmitted through the glass CVG is changed, and the light having the variable traveling direction can be transmitted to the lens device 193. Therefore, it is possible to simply implement the optical correction device 192s for camera shake compensation. In particular, it is possible to perform hand shake compensation independent of the lens device 193.

On the other hand, when the camera device 195s is partially tilted in the first direction, the thickness or refractive index of the liquid 530 in the optical correction device 192s is changed, so that light from the outside is shifted in the first direction by the tilting angle. Light that is tilted and tilted by the liquid 530 may be incident on the image sensor 820. Accordingly, it is possible to simply implement the optical correction device 192s for camera shake compensation.

On the other hand, the refractive index of the liquid 530 is greater than that of the glass (CVG), and the refractive index of the liquid 530 is preferably greater than the refractive index of the substrate 510. Accordingly, the progress of light in the liquid 530 The direction can be changed.

Meanwhile, the thickness of the liquid 530 is varied according to an electric signal applied to the plurality of electrodes 540a to 540d, and the like, and the thickness of the glass CVG and the thickness of the substrate 510 may be constant.

Meanwhile, the optical correction device 192s operates as a first module (MODa), and the lens device 193 and the image sensor 820 operate as a second module (MODb) separate from the first module (MODa). can do.

That is, when the camera device 195s is moved or tilted, the optical correction device 192s, while moving or tilting, changes the traveling direction of the incident light to correct hand shake, but the lens device 193 and the image While moving or tilting, the sensor 820 receives the incident light as it is without changing the traveling direction.

Meanwhile, as the size of the image sensor 820 increases, the size of the lens device 193 and the size of the liquid 530 in the optical correction device 192s may increase.

In particular, since the optical correction device 192s operating as the first module (MODa) can be separately designed, and the lens device 193 and the image sensor 820 operating as the second module (MODb) can be separately designed, Compared to Figs. 6A to 6C, the degree of design freedom is increased.

10A to 12B are views referenced in the description of FIG. 7A or 9A.

10A is a diagram referred to for explaining the operation of the optical correction device 192 of FIG. 7A.

First, referring to (a) of FIG. 10A, when an electric signal is not applied to a coil in the optical correction device 192, the thickness or refractive index of the liquid lens LNS does not change, and accordingly, the liquid lens LNS The light incident on) passes through the substrate SUB and is transmitted to the lens device 193 without changing the propagation direction of the light.

Referring to (b) of FIG. 10A, when a first electric signal is applied to a coil in the optical correction device 192, the distance between the first coil COLa and the first magnet MGTa on the left is a first distance. It is changed to (DDa), and the distance between the second coil COLb on the right side and the second magnet MGTb is changed to a second distance DDb smaller than the first distance DDa.

That is, the distance between the left first coil COLa and the first magnet MGTa becomes smaller than the distance between the right second coil COLb and the second magnet MGTb.

Accordingly, the left side of the substrate SUB moves upward, and the right side of the substrate SUB moves downward.

Accordingly, as shown in the drawing, the left thickness of the liquid lens LNS decreases and the right thickness increases. As a result, the light incident on the liquid lens LNS is tilted to the left, passes through the substrate SUB, and is transmitted to the lens device 193.

Next, referring to (c) of FIG. 10A, when a second electric signal is applied to a coil in the optical correction device 192, the distance between the first coil COLa and the first magnet MGTa on the left is determined. The distance between the second coil COLb and the second magnet MGTb on the right side is changed to a first distance DDa smaller than the second distance DDb.

Accordingly, the left side of the substrate SUB moves downward, and the right side of the substrate SUB moves upward.

Accordingly, as shown in the drawing, the left thickness of the liquid lens LNS increases and the right thickness decreases. Consequently, the light incident on the liquid lens LNS is tilted in the right direction, passes through the substrate SUB, and is transmitted to the lens device 193.

10B is a diagram referred to for explanation of the operation of the optical correction device 192s of FIG. 9A.

First, referring to (a) of FIG. 10B, when an electric signal is not applied to an electrode in the optical correction device 192s, the thickness or refractive index of the liquid 530 does not change, and accordingly, the glass (CVG) is The light transmitted and incident on the liquid 530 is transmitted to the lens device 193 without changing the direction of the light traveling.

Referring to (b) of FIG. 10B, when a first electrical signal is applied to an electrode or the like in the optical correction device 192s, the left thickness of the liquid 530 decreases and the right thickness increases.

As a result, the light passing through the glass CVG and incident on the liquid 530 is tilted in the left direction and transmitted to the lens device 193.

Meanwhile, due to the change in the thickness of the liquid 530, the distance between the left first contact member ITa and the common electrode 520 is changed to the first distance DDa, and the right second contact member ITb The distance between the and the common electrode 520 is changed to a second distance DDb smaller than the first distance DDa.

Next, referring to (c) of FIG. 10B, when a second electric signal is applied to an electrode or the like in the optical correction device 192s, the left thickness of the liquid 530 increases and the right thickness decreases.

As a result, the light passing through the glass CVG and incident on the liquid 530 is tilted in the right direction and transmitted to the lens device 193.

Meanwhile, due to the change in the thickness of the liquid 530, the distance between the left first contact member ITa and the common electrode 520 is changed to the second distance DDb, and the right second contact member ITb The distance between the and the common electrode 520 is changed to a first distance DDa smaller than the second distance DDb.

FIG. 11A is a diagram illustrating that an image is formed on the image sensor 820x when the conventional camera device 195x of FIG. 6A is fixed.

Referring to the drawing, when the camera device 195x is fixed, the first point PTma and the second point PTmb of the external object OBJ pass through the lens device 193x and are transferred to the image sensor 820x. The phase (PHa) is formed.

In the drawing, it is illustrated that the image PHa is formed at the front end of the image sensor 820x.

In particular, it exemplifies that the distance between the first point PTa of the image PHa and the image sensor 820x is Da, and the distance between the second point PTb of the image PHa and the image sensor 820x is Db. .

FIG. 11B is a diagram illustrating that an image is formed on the image sensor 820x when the conventional camera device 195x of FIG. 6A is moved.

Referring to the drawing, when the camera device 195x moves to ref2 based on ref1, that is, when it is tilted by θ1 in the right direction or clockwise direction, the lens device 193x and the image sensor 820x are also in the right direction. Or it moves by θ1 in the clockwise direction.

However, since the light traveling direction of the light passing through the lens device 193x is not changed in the lens device 193x or the like, the image sensor 820x is partially tilted to form an image PHb.

In the drawing, it is illustrated that the image PHb is formed at the front end of the image sensor 820x.

In particular, the distance between the first point PKb1 of the image PHb and the image sensor 820x is Dax less than Da, and the distance between the second point PKb2 of the image PHb and the image sensor 820x is less than Db. Illustrate that it is a large Dbx.

That is, by tilting the camera device 195x in the right direction or in the clockwise direction, the points of the image PHb are tilted, unlike FIG. 11A, and are formed on the image sensor 820x. Therefore, a separate motion correction is required to prevent hand shake.

FIG. 12A is a diagram illustrating that an image is formed on the image sensor 820x when the camera device 195 according to the embodiment of the present invention of FIG. 7A is fixed.

Referring to the drawing, when the camera device 195 is fixed, the first point PTma and the second point PTmb of the external object OBJ are a liquid lens LNS in the optical correction device 192, and a lens. Passing through the device 193, an image PHa is formed on the image sensor 820.

Meanwhile, an electric signal may not be applied to a plurality of coils COLa to COLd in the optical correction device 192. Accordingly, the distance between the plurality of coils COLa to COLd and the plurality of magnets MGTa to MGTd may be constant as DD.

Meanwhile, when the camera device 195 is fixed, the first point PTma and the second point PTmb of the external object OBJ are matched with the first area and the second area of the image sensor 820.

In the drawing, it is illustrated that the image PHa is formed at the front end of the image sensor 820.

In particular, it is illustrated that the distance between the first point PTa of the image PHa and the image sensor 820 is Da, and the distance between the second point PTb of the image PHa and the image sensor 820 is Db. .

FIG. 12B is a diagram illustrating that an image is formed on the image sensor 820x when the camera device 195 according to the embodiment of the present invention of FIG. 7A is moved.

Referring to the drawing, when the camera device 195 moves to ref2 based on ref1, that is, when it is tilted by θ1 in the right direction or clockwise, the lens device 193 and the image sensor 820 are also in the right direction. Or it moves by θ1 in the clockwise direction.

In this case, the optical correction device 192 may apply an electric signal to at least one of the plurality of coils COLa to COLd in order to compensate for tilting of the camera device 195 in a right direction or a clockwise direction.

For example, a first electric signal may be applied to the first coil COLa, and a second electric signal may be applied to the second coil COLb.

Accordingly, the distance between the first coil COLa and the first magnet MGTa is changed to a first distance DDa smaller than DD, and the distance between the second coil COLb and the second magnet MGTb is It may be changed to a second distance DDb that is greater than the first distance DDa.

Accordingly, the substrate SUB is further tilted in the right or clockwise direction, and as a result, the width of the upper portion of the liquid lens LNS becomes smaller and the width of the lower portion becomes larger due to the tilting of the substrate SUB.

Accordingly, the traveling direction of light incident on the liquid lens LNS is varied from the horizontal direction to the right direction and output.

That is, as shown in the drawing, in contrast to refc, the direction of light output from the liquid lens LNS is output in the refd direction. That is, the direction of light output from the liquid lens LNS is tilted clockwise by θ1. Accordingly, an image PHb based on partially tilted light is formed on the image sensor 820.

In the drawing, it is illustrated that the image PHb is formed at the front end of the image sensor 820.

In particular, it is illustrated that the distance between the first point PTa of the image PHa and the image sensor 820 is Da, and the distance between the second point PTb of the image PHa and the image sensor 820 is Db. .

As a result, even if the camera device 195 moves due to the operation of the optical correction device 192, an image is formed on the image sensor 820 as in FIG. 12A.

Accordingly, it is possible to simply implement the optical correction device 192s for camera shake compensation.

According to the camera device 195 according to the embodiment of the present invention, when the camera device 195 is partially moved or partially tilted, the thickness of the liquid lens (LNS) in the optical correction device 192s is variable, and an external object The first point PTma and the second point PTmb of the (OBJ) are based on the light passing through the liquid lens LNS having a variable thickness, respectively, a first region and a second region of the image sensor 820. Can be matched to Accordingly, it is possible to simply implement the optical correction device 192 for camera shake compensation.

On the other hand, when the camera device 195 is fixed, light from the outside passes through the liquid lens LNS without changing the propagation direction of light, and enters the image sensor 820, and the camera device 195 is first When partially tilted in the direction, the thickness of the liquid lens LNS in the optical correction device 192s is variable, so that light from the outside is tilted in the first direction by the tilting angle, and tilted in the liquid lens LNS. Light may be incident on the image sensor 820. Accordingly, it is possible to simply implement the optical correction device 192 for camera shake compensation.

13A to 13B are views for explaining a driving method of the liquid lens of FIG. 7A.

First, (a) of FIG. 13A illustrates that the first voltage V1 is applied to the liquid lens LNS, so that the liquid lens operates like a concave lens.

Next, FIG. 13A(b) illustrates that a second voltage V2 greater than the first voltage V1 is applied to the liquid lens LNS, so that the liquid lens does not change the traveling direction of light.

Next, FIG. 13A(c) illustrates that a third voltage V3 greater than the second voltage V2 is applied to the liquid lens LNS, so that the liquid lens operates like a convex lens.

Meanwhile, FIG. 13A illustrates that the curvature or diopter of the liquid lens changes according to the level of the applied voltage, but is not limited thereto, and the curvature or diopter of the liquid lens may change according to the pulse width of the applied pulse. Do.

Next, FIG. 13B (a) illustrates that the liquid in the liquid lens LNS operates like a convex lens as the liquid has the same curvature.

That is, according to (a) of FIG. 13B, the incident light Lpaa is concentrated and the corresponding output light Lpab is output.

Next, FIG. 13B (b) illustrates that the light traveling direction is changed to the image side as the liquid in the liquid lens LNS has an asymmetric curved surface.

That is, according to (b) of FIG. 13B, the incident light Lpaa is concentrated upward, and the corresponding output light Lpac is output.

14A to 14C are views showing the structure of the liquid lens of FIG. 7A.

In particular, FIG. 14A shows a top view of the liquid lens, FIG. 14B shows a bottom view of the liquid lens of FIG. 7A, and FIG. 14C shows a cross-sectional view taken along line II′ of FIGS. 14A and 14C.

In particular, FIG. 14A is a view corresponding to the right side of the liquid lens LNS of FIGS. 14A to 14B, and FIG. 14B may be a view corresponding to the left side of the liquid lens LNS of FIGS. 14A to 14B.

Referring to the drawings, as shown in FIG. 14A, a common electrode COM 520 may be disposed on the liquid lens LNS. In this case, the common electrode COM 520 may be disposed in a tube shape, and the liquid 530 may be disposed in a lower region of the common electrode COM 520, in particular, in a region corresponding to the hollow. have.

Meanwhile, although not shown in the drawing, an insulator (not shown) may be disposed between the common electrode COM 520 and the liquid to insulate the common electrode COM 520.

In addition, as shown in FIG. 14B, a plurality of electrodes LA to LD 540a to 540d may be disposed under the common electrode COM 520, in particular, under the liquid 530. The plurality of electrodes LA to LD 540a to 540d may be arranged in a form surrounding the liquid 530 in particular.

In addition, a plurality of insulators 550a to 550d for insulation may be disposed between the plurality of electrodes LA to LD 540a to 540d and the liquid 530, respectively.

That is, the liquid lens LNS includes a common electrode COM 520, a plurality of electrodes LA-LD 540a-540d spaced apart from the common electrode COM 520, and the common electrode A liquid 530 and an electrically conductive aqueous solution (595 in FIG. 14C) disposed between the (COM) 520 and the plurality of electrodes LA-LD 540a-540d may be provided.

Referring to FIG. 14C, the liquid lens LNS is insulated from the plurality of electrodes LA-LD 540a-540d on the first substrate 510 and the plurality of electrodes LA-LD 540a-540d. For a plurality of insulators (550a~550d), a liquid 530 on a plurality of electrodes (LA~LD) (540a~540d), an electroconductive aqueous solution 595 on the liquid 530, and a liquid A common electrode (COM) 520 disposed to be spaced apart from 530 and a second substrate 515 on the common electrode (COM) 520 may be provided.

The common electrode 520 may have a hollow shape and may be formed in a tube shape. In addition, a liquid 530 and an electrically conductive aqueous solution 595 may be disposed in the hollow region. The liquid 530 may be arranged in a circular shape, as shown in FIGS. 14A to 14B. The liquid 530 at this time may be a non-conductive liquid such as oil.

Meanwhile, as the hollow region goes from the bottom to the top, the size may increase, and accordingly, the size of the plurality of electrodes LA to LD 540a to 540d may decrease from the bottom to the top.

In FIG. 14C, among the plurality of electrodes LA-LD 540a-540d, the first electrode LA 540a and the second electrode LB 540b are formed to be inclined, and from the bottom to the top, the Illustrates the decrease in size.

On the other hand, unlike FIGS. 14A to 14C, a plurality of electrodes LA to LD 540a to 540d may be formed at the top, which is the position of the common electrode 520, and the common electrode 520 may be formed at the bottom. Do.

Meanwhile, FIGS. 14A to 14C illustrate four electrodes as a plurality of electrodes, but the present invention is not limited thereto, and it is possible to form two or more different numbers of electrodes.

Meanwhile, in FIG. 14C, after a pulse-type electrical signal is applied to the common electrode 520 and after a predetermined time, the first electrode LA 540a and the second electrode LB 540b are pulsed. When an electric signal is applied, a potential difference occurs between the common electrode 520 and the first electrode LA 540a and the second electrode LB 540b, and accordingly, an electrically conductive aqueous solution having electrical conductivity The shape of the liquid 595 changes, and the shape of the liquid 530 inside the liquid 530 changes in response to the change in the shape of the electrically conductive aqueous solution 595.

Meanwhile, in the present invention, the curvature of the liquid 530 formed according to the electric signals applied to the plurality of electrodes (LA-LD) 540a-540d and the common electrode 520, respectively, is easily and quickly detected. Suggest a way to do it.

To this end, the sensor unit 962 in the present invention is the area of the boundary area Ac0 between the first insulator 550a on the first electrode 540a in the liquid lens LNS and the electrically conductive aqueous solution 595 To detect changes in size or area.

In Fig. 14C, AM0 is exemplified as the area of the boundary area Ac0. In particular, it is exemplified that the area of the boundary region Ac0 contacting the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AM0.

In FIG. 14C, it is exemplified that the liquid 530 is not concave or convex, but is parallel to the first substrate 510 or the like. The curvature at this time can be defined as 0, for example.

Meanwhile, as shown in FIG. 14C, for the boundary region Ac0 in contact with the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a, the capacitance (C) can be formed.

In this case, ε may represent the dielectric constant of the dielectric 550a, A may represent the area of the boundary region Ac0, and d may represent the thickness of the first dielectric 550a.

Here, assuming that ε and d are fixed values, it may be the area of the boundary region Ac0 that has a great influence on the capacitance C.

That is, as the area of the boundary region Ac0 increases, the capacitance C formed in the boundary region Ac0 may increase.

On the other hand, as the curvature of the liquid 530 is varied, the area of the boundary area Ac0 is changed, so in the present invention, the area of the boundary area Ac0 is detected using the sensor unit 962, or It is assumed that the capacitance (C) formed in (Ac0) is detected.

Meanwhile, the capacitance of FIG. 14C can be defined as CAc0.

15A to 15E are diagrams illustrating various curvatures of the liquid lens LNS.

First, FIG. 15A illustrates that a first curvature Ria is formed in the liquid 530 according to the application of an electric signal to the plurality of electrodes LA-LD 540a-540d and the common electrode 520, respectively. do.

In FIG. 15A, as the first curvature Ri is formed in the liquid 530, AMa (> AM0) is illustrated as the area of the boundary area Aaa. In particular, it is exemplified that the area of the boundary area Aaa contacting the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AMa.

According to Equation 1, since the area of the boundary area Aaa in FIG. 15A is larger than that of FIG. 13C, the capacitance of the boundary area Aaa increases. Meanwhile, the capacitance of FIG. 15A may be defined as CAaa, and has a larger value than CAc0, which is the capacitance of FIG. 13C.

The first curvature Ri at this time may be defined as having a positive polarity value. For example, it may be defined that the first curvature Ri has a level of +2.

Next, FIG. 15B illustrates that a second curvature Rib is formed in the liquid 530 according to application of an electric signal to the plurality of electrodes LA-LD 540a-540d and the common electrode 520 respectively. do.

In FIG. 15B, as the second curvature Rib is formed in the liquid 530, AMb (>AMa) is illustrated as the area of the boundary area Aba. In particular, it is exemplified that the area of the boundary area Aba contacting the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AMb.

According to Equation 1, since the area of the boundary area Aba in Fig. 15B is larger than that of Fig. 15A, the capacitance of the boundary area Aba becomes larger. Meanwhile, the capacitance of FIG. 15B may be defined as CAba, and has a larger value than CAaa, which is the capacitance of FIG. 15A.

The second curvature Rib and the first curvature Ri at this time may be defined as having a value of positive polarity smaller than that of the second curvature Rib and the first curvature Ri. For example, the second curvature Rib may be defined as having a level of +4.

Meanwhile, according to FIGS. 15A and 15B, the liquid lens LNS operates as a convex lens, and accordingly, the output light LP1a in which the incident light LP1 is concentrated is output.

Next, FIG. 15C illustrates that a third curvature Ric is formed in the liquid 530 according to application of an electric signal to the plurality of electrodes LA-LD 540a-540d and the common electrode 520, respectively. do.

In particular, in FIG. 15C, AMa is illustrated as the area of the left boundary area Aca, and AMb (>AMa) is illustrated as the area of the right boundary area Acb.

In particular, the area of the boundary area Aca in contact with the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AMa, and the second insulator on the second electrode 540b It is exemplified that the area of the boundary region Acb in contact with the electrically conductive aqueous solution 595 among the inclined portions of 550b is AMb.

Accordingly, the capacitance of the left border area Aca may be CAaa, and the capacitance of the right border area Acb may be CAba.

The third curvature Ric at this time may be defined as having a positive polarity value. For example, it may be defined that the third curvature Ric has a +3 level.

Meanwhile, according to FIG. 15C, the liquid lens LNS operates as a convex lens, and accordingly, the output light LP1b in which the incident light LP1 is more concentrated toward one side is output.

Next, FIG. 15D illustrates that a fourth curvature Rid is formed in the liquid 530 according to the application of an electric signal to the plurality of electrodes LA-LD 540a-540d and the common electrode 520, respectively. do.

In FIG. 15D, as the fourth curvature Rid is formed in the liquid 530, AMd(<AM0) is illustrated as the area of the boundary area Ada. In particular, it is exemplified that the area of the boundary area Ada contacting the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AMd.

According to Equation 1, since the area of the boundary area Ada in FIG. 15D is smaller than that of FIG. 13C, the capacitance of the boundary area Ada becomes smaller. Meanwhile, the capacitance of FIG. 15D may be defined as CAda, and has a smaller value than CAc0, which is the capacitance of FIG. 13C.

At this time, the fourth curvature Ri may be defined as having a negative polarity value. For example, it may be defined that the fourth curvature Ri has a level of -2.

Next, FIG. 15E illustrates that a fifth curvature Rie is formed in the liquid 530 according to application of an electric signal to the plurality of electrodes LA-LD 540a-540d and the common electrode 520, respectively. do.

In FIG. 15E, as the fifth curvature Rie is formed in the liquid 530, AMe(<AMd) is illustrated as the area of the boundary area Aea. In particular, it is exemplified that the area of the boundary area Aea contacting the electrically conductive aqueous solution 595 among the inclined portions of the first insulator 550a on the first electrode 540a is AMe.

According to Equation 1, compared to FIG. 15D, since the area of the boundary area Aea in FIG. 15E is smaller, the capacitance of the boundary area Aea becomes smaller. Meanwhile, the capacitance of FIG. 15E may be defined as CAea, and has a smaller value than CAda, which is the capacitance of FIG. 15D.

The fifth curvature Rie at this time may be defined as having a negative polarity value. For example, it may be defined that the fifth curvature Rie has a -4 level.

Meanwhile, according to FIGS. 15D and 15E, the liquid lens LNS operates as a concave lens, and accordingly, the output light LP1c from which the incident light LP1 is emitted is output.

16A to 16B are various examples of internal block diagrams of a light conversion unit.

First, FIG. 16A is an example of an internal block diagram of a lens driver.

Referring to the drawings, the light conversion unit 320a of FIG. 16A may include a lens driving unit 860, a variable pulse width control unit 840, a power supply unit 890, and a liquid lens LNS.

Referring to the operation of the light conversion unit 320a of FIG. 16A, the pulse width variable control unit 840 outputs a pulse width variable signal V in response to a target curvature, and the lens driver 860 outputs a pulse width variable signal. Using (V) and the voltage Vx of the power supply unit 890, a corresponding voltage may be output to a plurality of electrodes and a common electrode of the liquid lens LNS.

That is, the light conversion unit 320a of FIG. 16A may operate as an open loop system to change the curvature of the liquid lens.

16B is another example of an internal block diagram of a light conversion unit.

Referring to the drawings, a light conversion unit 320a according to an embodiment of the present invention includes a liquid lens LNS, a lens driving unit 960 for applying an electric signal to the liquid lens LNS, and an electric signal. A sensor unit 962 for sensing the curvature of the formed liquid lens LNS, and a processor 970 for controlling the lens driving unit 960 to form a target curvature of the liquid lens LNS based on the sensed curvature. Can include.

Meanwhile, unlike the drawings, the light conversion unit 320a may not include the processor 970, and the processor 970 may be included in the image processor 830 of FIG. 2.

Meanwhile, the sensor unit 962 may detect a change in the size or area of the boundary area Ac0 between the insulator on the electrode in the liquid lens LNS and the electrically conductive aqueous solution 595. Accordingly, it is possible to quickly and accurately detect the curvature of the lens.

Meanwhile, the lens driving unit ACTb according to an embodiment of the present invention includes a power supply unit 990 that supplies power, and an AD converter 967 that converts a signal related to capacitance sensed by the sensor unit 962 into a digital signal. It may be further provided.

Meanwhile, the light conversion unit 320a includes a plurality of conductive lines CA1 and CA2 for supplying an electric signal to each electrode (common electrode, a plurality of electrodes) in the liquid lens LNS in the lens driving unit 960. , A switching element SWL disposed between any one CA2 of the plurality of conductive lines and the sensor unit 962 may be further included.

In the drawing, it is illustrated that the switching element SWL is disposed between the sensor unit 962 and the conductive line CA2 for applying an electric signal to any one of a plurality of electrodes in the liquid lens LNS. In this case, a contact between the conductive line CA2 and one end of the switching element SWL or the liquid lens LNS may be referred to as node A.

Meanwhile, in the present invention, in order to detect the curvature of the liquid lens LNS, an electric signal is applied to each electrode (common electrode, a plurality of electrodes) in the liquid lens LNS through a plurality of conductive lines CA1 and CA2. can do.

For example, during the first period, the switching element SWL may be turned on.

At this time, when the switching element SWL is turned on and is connected to the sensor unit 962, when an electric signal is applied to the electrode in the liquid lens LNS, a curvature is formed in the liquid lens LNS, and a curvature is formed. An electric signal corresponding to may be supplied to the sensor unit 962 through the switching element SWL.

Accordingly, the sensor unit 962, based on the electric signal from the liquid lens LNS, during the ON period of the switching element SWL, the insulator on the electrode in the liquid lens LNS of the liquid lens LNS, A change in the size or area of the boundary region Ac0 between the electrically conductive aqueous solutions 595 may be detected, or the capacitance of the boundary region Ac0 may be sensed.

Next, during the second period, the switching element SWL is turned off, and an electric signal may be continuously applied to the electrode in the liquid lens LNS. Accordingly, a curvature may be formed in the liquid 530.

Next, during the third period, the switching element SWL is turned off, and an electric signal may not be applied to an electrode in the liquid lens LNS, or a low level electric signal may be applied.

Next, during the fourth period, the switching element SWL may be turned on.

At this time, when the switching element SWL is turned on and is connected to the sensor unit 962, when an electric signal is applied to the electrode in the liquid lens LNS, a curvature is formed in the liquid lens LNS, and a curvature is formed. An electric signal corresponding to may be supplied to the sensor unit 962 through the switching element SWL.

On the other hand, when the calculated curvature based on the sensed capacitance during the first period is smaller than the target curvature, the processor 970 may perform a pulse of the pulse width variable control signal supplied to the driving unit 960 in order to reach the target curvature. It can be controlled to increase the width.

Accordingly, the time difference between the pulses applied to the common electrode 530 and the plurality of electrodes may increase, and thus, the curvature formed in the liquid 530 may increase.

During the fourth period, when an electric signal is applied to an electrode in the liquid lens LNS while the switching element SWL is turned on and is connected to the sensor unit 962, a curvature is formed in the liquid lens LNS. , The electric signal corresponding to the formation of the curvature may be supplied to the sensor unit 962 through the switching element SWL.

Accordingly, the sensor unit 962, based on the electric signal from the liquid lens LNS, during the ON period of the switching element SWL, the insulator on the electrode in the liquid lens LNS of the liquid lens LNS, A change in the size or area of the boundary region Ac0 between the electrically conductive aqueous solutions 595 may be detected, or the capacitance of the boundary region Ac0 may be sensed.

Accordingly, the processor 970 may calculate a curvature based on the sensed capacitance, and may determine whether a target curvature has been reached. Meanwhile, when the target curvature is reached, the processor 970 may control to supply a corresponding electrical signal to each electrode.

Accordingly, according to the electric signal supply, the curvature of the liquid 530 is formed, and the curvature of the liquid can be immediately sensed. Therefore, it is possible to quickly and accurately grasp the curvature of the liquid lens LNS.

Meanwhile, in the drawing, the lens driving unit 960 and the sensor unit 962 may be formed as one module 965.

Meanwhile, in the drawing, the lens driving unit 960 and the sensor unit 962, the processor 970, the power supply unit 990, the AD converter 967, and the switching element SWL are system on chip, SOC), it can be implemented as a single chip.

Meanwhile, the processor 970 may control the level of the voltage applied to the liquid lens LNS to increase or the pulse width to increase in order to increase the curvature of the liquid lens LNS.

Meanwhile, the processor 970 may calculate the curvature of the liquid lens LNS based on the capacitance sensed by the sensor unit 962.

In this case, the processor 970 may calculate that as the capacitance sensed by the sensor unit 962 increases, the curvature of the liquid lens LNS increases.

In addition, the processor 970 may control the liquid lens LNS to have a target curvature.

Meanwhile, the processor 970 calculates the curvature of the liquid lens LNS based on the capacitance sensed by the sensor unit 962, and generates the pulse width variable signal V based on the calculated curvature and the target curvature. It can be output to the lens driver 960.

Accordingly, the lens driver 960 uses the pulse width variable signal V and the voltages Lv1 and Lv2 of the power supply unit 990 to provide a plurality of electrodes of the plurality of electrodes LA to LD 540a to 540d. , And the common electrode 520 may output a corresponding electrical signal.

In this way, the capacitance of the liquid lens LNS is sensed and fed back, and an electric signal is applied to the liquid lens LNS so that the curvature of the lens is varied, so that the curvature of the lens can be quickly and accurately changed.

Meanwhile, the processor 970 generates an equalizer 972 that calculates a curvature error based on the calculated curvature and a target curvature, and a pulse width variable signal V based on the calculated curvature error Φ. The output pulse width variable control unit 940 may be included.

Accordingly, when the calculated curvature becomes larger than the target curvature, the processor 970 may control the duty of the pulse width variable signal V to increase based on the calculated curvature error Φ. Accordingly, it is possible to quickly and accurately change the curvature of the liquid lens LNS.

Meanwhile, the processor 970 receives focus information (AF) from the image processing unit 930 and shake information (OIS) from a gyro sensor (not shown), and receives focus information (AF) and shake information (OIS). Based on, it is possible to determine the target curvature.

In this case, the determined update period of the target curvature is preferably longer than the update period of the calculated curvature based on the sensed capacitance of the liquid lens LNS.

As a result, since the calculated curvature update period is smaller than the target curvature update period, it is possible to quickly change the curvature of the liquid lens LNS to a desired curvature.

In addition, although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the technical field to which the present invention belongs without departing from the gist of the present invention claimed in the claims. In addition, various modifications are possible by those of ordinary skill in the art, and these modifications should not be individually understood from the technical spirit or prospect of the present invention.

Claims (19)

In the camera device, An optical correction device including a glass and a liquid lens; A lens device disposed under the optical correction device; Includes; an image sensor disposed under the lens device and converting light that has passed through the lens device into an electrical signal, The optical correction device varies a traveling direction of light transmitted through the glass, based on an applied electrical signal, The lens device, the camera device, characterized in that receiving the light from the optical correction device, and transmitting the light to the image sensor. The method of claim 1, The optical correction device, The glass; The liquid lens disposed under the glass; A substrate disposed under the liquid lens; A plurality of coils disposed on side surfaces of the liquid lens; A plurality of connection members attached to a portion of the substrate; And a plurality of magnets each in contact with the plurality of connecting members and spaced apart from and opposite to the coil. The method of claim 7, When an electric signal is applied to at least one of the plurality of coils, the distance between the first coil and the first magnet is changed to a first distance, and the distance between the second coil and the second magnet is smaller than the first distance. Variable to the second distance, The camera apparatus, characterized in that the thickness of the liquid lens is varied based on the first distance and the second distance. The method of claim 1, The optical correction device, A camera apparatus, characterized in that, based on the applied electrical signal, the thickness of the liquid lens is varied, and the traveling direction of the light transmitted through the glass is varied through the liquid lens having the variable thickness. The method of claim 1, When the camera device is fixed, a first point and a second point of an external object are matched to the first area and the second area of the image sensor, respectively, based on the light passing through the liquid lens, When the camera device is partially moved or partially tilted, the thickness of the liquid lens in the optical correction device is changed, and the first point and the second point of the external object pass through the liquid lens having the variable thickness. The camera device, characterized in that, based on one light, each of the first region and the second region of the image sensor are matched. The method of claim 1, When the camera device is fixed, light from the outside passes through the liquid lens as it is without changing the propagation direction of light, and is incident on the image sensor, When the camera device is partially tilted in the first direction, the thickness of the liquid lens in the optical correction device is varied, so that the light from the outside is tilted in the first direction by the tilting angle, and the liquid lens The camera device, characterized in that the light tilted at is incident on the image sensor. The method of claim 1, The optical correction device, The glass; The liquid disposed under the glass; A plurality of insulators disposed on the side of the liquid; A common electrode disposed to be spaced apart from the plurality of insulators; A substrate disposed under the liquid; And a plurality of electrodes contacting the substrate. The method of claim 7, The optical correction device, A plurality of conductive lines electrically connected to each of the plurality of electrodes; And And a plurality of contact members each contacting one end of the plurality of conductive lines. The method of claim 8, The plurality of contact members include a metal member, Electrical signals applied to each of the plurality of metal members are respectively applied to the plurality of electrodes through the plurality of conductive lines, The camera device, characterized in that the curvature of the liquid is varied based on the electric signals applied to each of the plurality of electrodes. The method of claim 8, When the camera device is fixed, a first distance between a first contact member and the common electrode among the plurality of contact members, and a second distance between the second contact member and the common electrode are constant, When the camera device is partially moved or partially tilted, a third distance between the first contact member and the common electrode and a fourth distance between the second contact member and the common electrode are different from each other. Camera device. The method of claim 7, The refractive index of the liquid is greater than that of the glass, The camera device, wherein the liquid has a refractive index greater than that of the substrate. The method of claim 7, The thickness of the liquid is varied according to an applied electrical signal, The camera device, characterized in that the thickness of the glass and the thickness of the substrate are constant. The method of claim 1, And a lens driver operating to move at least one lens in the lens device. The method of claim 13, The lens driving unit, A magnet disposed on the side of the lens device; A coil spaced apart from the magnet; And a Hall sensor disposed between the magnet and the coil. The method of claim 1, The optical correction device operates as a first module, The lens device and the image sensor, the camera device, characterized in that operating as a second module separate from the first module. The method of claim 1, A camera apparatus, characterized in that as the size of the image sensor increases, the size of the lens apparatus and the size of the liquid lens in the optical correction apparatus increase. A terminal comprising the camera device of any one of claims 1 to 16. The method of claim 17, It further includes a frame; The terminal, characterized in that the glass of the camera device is disposed in the opening formed in the frame. The method of claim 18, The glass, the terminal, characterized in that protruding more outward than the frame.

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