Image sensor for correcting chromatic aberration, camera, and electronic device

Abstract

Provided are an image sensor for correcting chromatic aberration, a camera, and an electronic device. The image sensor comprises: a color filter layer that includes a plurality of color filters including at least one color channel and disposed on one plane of the image sensor; a microlens layer including a plurality of microlenses disposed on the upper end of the color filters; and a photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters. The plurality of microlenses may be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters on the basis of data on chromatic aberration according to the color channels of the light. Various other embodiments are possible.

Description

Image sensors, cameras, and electronic devices that correct chromatic aberration

[0001] Embodiments of this document relate to image sensors, cameras, and electronic devices that correct chromatic aberration.

[0002] A camera includes a lens and an image sensor. The lens collects incident light, and the image sensor converts the incident light amount into charge for each pixel from the light incident through the lens, and can collect image information based on the converted charge amount. For example, the image sensor may include a charged coupled device (CCD) or a complementary metal-oxide-semiconductor (CMOS). The charge amount signal converted by the image sensor is transmitted to an image signal processor (ISP), and the ISP can identify the image based on the charge amount signal.

[0003] Light entering a lens can contain various wavelengths. Light can have different refractive indices depending on its wavelength. Incident light can be refracted as it passes through the lens, and this difference in refractive indices can cause chromatic aberration. Chromatic aberration can include axial chromatic aberration, where the focal length varies depending on the refractive index, and longitudinal chromatic aberration, where the focal point varies.

[0004] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.

[0005] An image sensor according to various embodiments of the present document may include a color filter layer including at least one color channel and a plurality of color filters arranged on one plane of the image sensor, a microlens layer including a plurality of microlenses arranged on an upper portion of the color filter layer, and a photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters. The plurality of microlenses may be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters based on chromatic aberration data according to the color channels of light.

[0006] A camera according to various embodiments of the present document may include a lens and an image sensor. The image sensor may include a color filter layer including at least one color channel and a plurality of color filters arranged on one plane of the image sensor, a microlens layer including a plurality of microlenses arranged on an upper portion of the color filter layer, and a photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters. The plurality of microlenses may be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters based on chromatic aberration data according to the color channels of light incident on the lens.

[0007] An electronic device according to various embodiments of the present document may include a camera and at least one processor controlling the camera. The camera may include a lens and an image sensor. The image sensor may include a color filter layer including at least one color channel and a plurality of color filters arranged on one plane of the image sensor, a microlens layer including a plurality of microlenses arranged on an upper portion of the color filter layer, and a photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters. The plurality of microlenses may be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters based on chromatic aberration data according to the color channels of light incident on the lens.

[0008] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments.

[0009] FIG. 2 is a drawing illustrating the configuration of a camera according to various embodiments.

[0010] FIG. 3 is a diagram illustrating chromatic aberration by a lens and color channel according to various embodiments.

[0011] FIGS. 4A, 4B, 4C, and 4D are drawings illustrating the structure of a camera according to various embodiments.

[0012] FIGS. 5A and 5B are drawings illustrating micro lenses that correct axial chromatic aberration according to various embodiments.

[0013] FIGS. 6A and 6B are drawings illustrating the arrangement of color filters according to various embodiments.

[0014] FIG. 7a and FIG. 7b are drawings explaining longitudinal chromatic aberration according to various embodiments.

[0015] FIGS. 8 and 9 are drawings illustrating micro lenses that correct chromatic aberration according to various embodiments.

[0016] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings so that those skilled in the art can easily implement the present disclosure. However, the present disclosure may be implemented in various different forms and is not limited to the embodiments described herein. In connection with the description of the drawings, the same or similar reference numerals may be used for identical or similar components. Furthermore, in the drawings and related descriptions, descriptions of well-known functions and configurations may be omitted for clarity and conciseness.

[0017] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100) according to various embodiments. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with at least one of an electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio output module (155), a display module (160), an audio module (170), a sensor module (176), an interface (177), a connection terminal (178), a haptic module (179), a camera module (180), a power management module (188), a battery (189), a communication module (190), a subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).

[0018] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or calculations. According to one embodiment, as at least a part of the data processing or calculations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or a secondary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor)) that can operate independently or together therewith. For example, if the electronic device (101) includes a main processor (121) and a secondary processor (123), the secondary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a specified function. The secondary processor (123) may be implemented separately from the main processor (121) or as a part thereof.

[0019] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.

[0020] The memory (130) can store various data used by at least one component (e.g., the processor (120) or the sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., the program (140)) and input data or output data for commands related thereto. The memory (130) can include a volatile memory (132) or a non-volatile memory (134). The non-volatile memory (134) can include at least one internal memory (136) and an external memory (138).

[0021] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0022] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0023] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.

[0024] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. In one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.

[0025] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).

[0026] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0027] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0028] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0029] A haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. In one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.

[0030] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0031] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least a part of a power management integrated circuit (PMIC).

[0032] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0033] The communication module (190) may support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device (101) and an external electronic device (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module (194) (e.g., a local area network (LAN) communication module, or a power line communication module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).

[0034] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.

[0035] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas by, for example, the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).

[0036] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high frequency band.

[0037] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).

[0038] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0039] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.

[0040] FIG. 2 is a drawing illustrating the configuration of a camera according to various embodiments.

[0041] Referring to FIG. 2, a camera (180) (e.g., the camera module (180) of FIG. 1) may include a lens (11) and an image sensor (20). The image sensor (20) may include a micro lens layer (12), a color filter layer (13), and a photosensitive element layer (14).

[0042] The lens (11) can refract light incident from the outside. Generally, the lens must satisfy the resolution for the entire area of ​​the image sensor (20) and also correct chromatic aberration. Therefore, the lens may be implemented as a plurality of lens groups. If the lens is implemented as a plurality of lens groups, the lens may become complicated, heavy, bulky, and expensive. If chromatic aberration is corrected in the image sensor (20), a simpler lens may be used (e.g., without chromatic aberration correction). A simple lens may reduce the number of lenses and, because it is easy to process, may increase the yield of the lens. In addition, the cost of the lens may be reduced due to the increased yield of the lens. Since the image sensor (20) of this document can correct chromatic aberration, the structure of the lens of the camera (180) may be simplified. The lens (11) of this document may include an objective lens. Alternatively, the camera (180) may include one or more simple lenses (11) depending on the structure.

[0043] Light refracted by the lens (11) can be focused on the pixel portion (e.g., the photosensitive element layer (14)), which is the photosensitive area of ​​the image sensor (20), through the microlens layer (12) of the image sensor (20). Therefore, the photosensitive efficiency of the image sensor (20) can be maximized. The refractive index of the light incident on the lens (11) can vary depending on the wavelength. The focal length of the light can vary depending on the refractive index. In addition, the focal length of the light can vary depending on the characteristics of the lens (11). For example, the characteristics of the lens (11) can vary depending on the shape and / or physical properties (or, material) of the lens.

[0044] For example, if the lens (11) is a convex lens, the focal length of the convex lens is as shown in equation (1).

[0045] (n-1)(1 / R1 - 1 / R2) = 1 / f -------------- (1)

[0046] Here, n may be the refractive index of the lens (11), R1 may be the radius of curvature of one surface of the lens (11), R2 may be the radius of curvature of the other surface of the lens (11), and f may be the focal length.

[0047] Therefore, the refractive index (n) of the lens (11) may vary depending on the physical properties of the lens (11). If the refractive index (n) of the lens (11) varies, the focal length may also vary. In addition, if the lens (11) has a curved shape, the focal length may also vary depending on the radii of curvature (R1, R2) of both surfaces of the lens (11).

[0048] The camera (180) may include an image sensor (20), and the image sensor (20) may include a micro lens layer (12), a color filter layer (13), and a photosensitive element layer (14).

[0049] The color filter layer (13) may include a plurality of color filters (1301, 1302, 1303). Each of the plurality of color filters (1301, 1302, 1303) includes one color channel and can receive light of a color corresponding to the color channel among the incident light. As an example, the color channel may include red, green, or blue, but is not limited to the above-described example. The color filter layer (13) may be arranged on a plane below the microlens layer (12) and above the photosensitive element layer (14). The color filter layer (13) may be arranged so that color filters including different color channels are adjacent to each other. Alternatively, the color filter layer (13) may be arranged so that a plurality of color filters including the same color channel form an area. Each of the plurality of color filters (1301, 1302, 1303) may correspond to one photosensitive element. A single photosensitive element can constitute a single pixel, and each of a plurality of color filters (1301, 1302, 1303) can correspond to a single pixel. Alternatively, the color filter layer (13) can be arranged so that a single color filter includes a plurality of adjacent pixels. In other words, a single color filter can correspond to a plurality of photosensitive elements.

[0050] The photosensitive element layer (14) may include a plurality of photosensitive elements (1401, 1402, 1403). The photosensitive element layer (14) may be disposed under the color filter layer (13). Each of the plurality of photosensitive elements (1401, 1402, 1403) may correspond to each of the plurality of color filters (1301, 1302, 1303). For example, red light input through a color filter (1301) including a red color channel may be collected by a corresponding first photosensitive element (1401). Green light input through a color filter (1302) including a green color channel may be collected by a corresponding second photosensitive element (1402). Additionally, blue light input through a color filter (1303) including a blue color channel may be collected by a corresponding third photosensitive element (1403). Alternatively, multiple photosensitive elements (1401, 1402, 1403) may correspond to one color filter. For example, red light input through a color filter (1301) including a red color channel may be collected by a first photosensitive element (1401), a second photosensitive element (1402), and a third photosensitive element (1403) arranged adjacent to each other.

[0051] The microlens layer (12) may include a plurality of microlenses (1201, 1202, 1203). The microlens layer (12) may be arranged on top of the color filter layer (13). Each of the plurality of microlenses (1201, 1202, 1203) may be arranged to correspond to each of the plurality of color filters (1301, 1302, 1303). That is, one microlens may be arranged to correspond to one color filter. Alternatively, one microlens may be arranged to correspond to multiple color filters. As an example, a plurality of color filters including the same color channel may be arranged to form regions in the color filter layer (13). One microlens may be arranged to correspond to regions of multiple color filters including the same color channel. Alternatively, when one color filter is arranged to include a plurality of adjacent pixels, one microlens may be arranged to correspond to one color filter including the plurality of pixels.

[0052] The micro lens layer (12) can transmit light refracted by the lens (11) to the photosensitive element layer (14) through the color filter layer (13). In order for each micro lens (1201, 1202, 1203) included in the micro lens layer (12) to transmit the maximum amount of light to the photosensitive element layer (14), the focus of the light refracted by the lens (11) must be formed in the pixel portion (e.g., the photosensitive element layer (14)), which is a photosensitive area, through the micro lens layer (12).

[0053] As described above, the focal length may vary depending on the wavelength of the light, and the focal length of the light may vary depending on the characteristics (e.g., shape, material properties) of the lens (11). Therefore, if the heights of the plurality of micro lenses (1201, 1202, 1203) are the same, there may be micro lenses whose focal lengths do not match depending on the characteristics of the lens (11) and the wavelength of the light. As an example, the focus of the red light may be formed by matching with the first micro lens (1201) located on the top of the red color filter (1301). Matching the focus with the micro lens may mean that the micro lens is positioned so that the light passing through the micro lens is focused on the photosensitive element. However, the focus of the green light may not be formed by matching with the second micro lens (1202) located on the top of the green color filter (1302), and may be formed at a point longer than the position of the second micro lens (1202). Alternatively, the focus of the blue light may be formed at a point shorter than the position of the third micro lens (1203) and not aligned with the third micro lens (1203) located on top of the blue color filter (1303).

[0054] Accordingly, the plurality of micro lenses (1201, 1202, 1203) of the present document can be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters (1301, 1302, 1303) based on chromatic aberration (e.g., axial chromatic aberration) data according to the color channels of light incident on the lens (11). For example, the chromatic aberration data may be the difference value between the wavelength data of light corresponding to each color channel that has passed through the lens (11) at the same position and reference data, as characteristic data of the lens (11). The reference data may be wavelength data of light corresponding to each color channel that is not affected by an external influence. The chromatic aberration data may vary depending on the characteristics of the lens (11), the color channel (or wavelength) of the light, and / or the on-plane positions of the micro lenses (1201, 1202, 1203). The height of each of the plurality of micro lenses (1201, 1202, 1203) may be set based on a value that reversely compensates for chromatic aberration according to the color channel of light in the chromatic aberration data. Alternatively, the plurality of micro lenses (1201, 1202, 1203) may have different refractive indices in consideration of the color channel of light and the set height of the micro lenses so that light passing through the micro lenses can be focused on the photosensitive element.

[0055] In addition, each of the plurality of micro lenses (1201, 1202, 1203) may be arranged to move to a position corresponding to a chief ray angle (CRA) according to the position of the photosensitive element layer (14). Alternatively, as described above, the plurality of micro lenses (1201, 1202, 1203) may include different refractive indices according to the color channels. For example, the micro lens (1201) corresponding to the red channel may include a first refractive index, the micro lens (1202) corresponding to the green channel may include a second refractive index, and the micro lens (1203) corresponding to the blue channel may include a third refractive index. In this case, a plurality of micro lenses (1201, 1202, 1203) can be arranged to move in a plane based on the CRA according to the position of the photosensitive element layer (14) and the refractive index of the micro lenses (1201, 1202, 1203) with respect to the central region of the photosensitive element (1401, 1402, 1403).

[0056] FIG. 3 is a diagram illustrating chromatic aberration by a lens and color channel according to various embodiments.

[0057] Referring to FIG. 3, chromatic aberration data according to the characteristics, field, and color channel of the lens (11) are illustrated. The chromatic aberration data may be data related to the focal length. The field may be the distance in the outward direction from the center point of the lens (11). The characteristics of the lens (11) may include a radius of curvature and / or a material. The chromatic aberration of light of each color channel may vary depending on the characteristics of the lens (11) and / or the color channel of the light. As an example, at the center point of lens 1, the chromatic aberration of the red channel may be about 0.025 mm, the chromatic aberration of the green channel may be about 0 mm, and the chromatic aberration of the blue channel may be about ?0.0125 mm. When other conditions are the same, at the center point of lens 2, the chromatic aberration of the red channel may be about 0.0125 mm, the chromatic aberration of the green channel may be about 0 mm, and the chromatic aberration of the blue channel may be about 0.005 mm.

[0058] Additionally, the chromatic aberration may vary depending on the field based on the central point of the lens (11). As an example, the chromatic aberration of the blue channel at the central point of lens 3 may be approximately 0.02 mm, the chromatic aberration of the blue channel at the 0.5 field point may be approximately 0.001 mm, and the chromatic aberration of the blue channel at the 0.75 field point may be approximately 0.0125 mm.

[0059] Figures 4a, 4b, 4c, and 4d are drawings illustrating the structure of a camera according to various embodiments. The camera (180) may further include a prism depending on the structure, and may include multiple lenses and / or multiple prisms. The prisms may change the path of light incident on the camera (180).

[0060] Referring to FIG. 4A, a structure in which the path of light incident on the camera (180) is changed by 90 degrees is illustrated. For example, the camera (180) can change the path of vertically incident light by 90 degrees in the horizontal direction using a prism (17). The camera (180) may include at least one lens (11a, 11b). For example, if the camera (180) includes two lenses (11a, 11b), a first lens (11a) (e.g., an objective lens), a prism (17), a second lens (11b), and an image sensor (20) may be arranged along the path of the incident light. The camera (180) may include one lens. If the camera (180) includes a first lens (11a), a first lens (11a) (e.g., an objective lens), a prism (17), and an image sensor (20) may be arranged along the path of the incident light. Alternatively, if the camera (18) includes a second lens (11b), a prism (17), the second lens (11b) and the image sensor (20) may be arranged along the path of the incident light.

[0061] Referring to FIG. 4b, a structure in which the path of light incident on the camera (180) is changed twice by 90 degrees is illustrated. The camera (180) can change the path of light incident vertically by 90 degrees in the horizontal direction by using the first prism (17a). The camera (180) can change the light that has been changed 90 degrees in the horizontal direction again by 90 degrees in the vertical direction by using the second prism (17b). The camera (180) may include at least one lens (11a, 11b). For example, if the camera (180) includes two lenses (11a, 11b), a first lens (11a) (e.g., an objective lens), a first prism (17a), a second lens (11b), a second prism (17b), and an image sensor (20) may be arranged along the path of the incident light. The camera (180) may include one lens. If the camera (180) includes a first lens (11a), the first lens (11a) (e.g., an objective lens), a first prism (17a), a second prism (17b), and an image sensor (20) may be arranged along the path of the incident light. Alternatively, if the camera (18) includes a second lens (11b), the first prism (17a), a second lens (11b), a second prism (17b), and an image sensor (20) may be arranged along the path of the incident light.

[0062] Referring to FIGS. 4C and 4D , the structure of a camera (180) including polygonal prisms (17a, 17b) is illustrated. For example, the camera (180) may include a lens (11) (e.g., an objective lens), polygonal prisms (17a, 17b), and an image sensor (20) in that order along the path of light. The polygonal prisms (17a, 17b) may totally reflect incident light to output light in the same direction as the incident direction (e.g., FIG. 4C ) to a surface opposite to the incident surface, or output light in the opposite direction to the incident direction (e.g., FIG. 4D ) to a surface identical to the incident surface.

[0063] If the camera (180) includes at least one prism and / or multiple lenses, chromatic aberration may vary depending on each prism and lens. In this case, chromatic aberration data for correcting chromatic aberration may be a difference value between wavelength data of light corresponding to each color channel passing through the lens and at least one prism at the same location and reference data. In addition, the height of each of the multiple micro lenses (1201, 1202, 1203) may be set based on a value that reversely compensates for chromatic aberration according to the color channel of light in the chromatic aberration data.

[0064] FIGS. 5A and 5B are drawings illustrating micro lenses that correct axial chromatic aberration according to various embodiments.

[0065] Referring to FIGS. 5A and 5B, a lens (11), a microlens layer (12), a color filter layer (13), and a photosensitive element layer (14) are illustrated. The microlens layer (12) may include a plurality of microlenses. In order to correct axial chromatic aberration, the height of the microlenses may be set (or changed, corrected, compensated, tuned) to different heights to match the focal length of the color channel of light corresponding to the color filter based on chromatic aberration data. For example, the height of the microlenses may be set based on a value that reversely compensates for the chromatic aberration of the color channel of light in the chromatic aberration data.

[0066] As an example, the lens (11) of FIG. 5A may be the lens 1 of the chromatic aberration data of FIG. 3, and a color filter (1207) of the first green channel may be positioned at the center point of the lens 1. To the left of the color filter (1207) of the first green channel, a color filter of the L-1 red channel, a color filter of the L-2 green channel, a color filter of the L-3 red channel, and a color filter of the L-4 green channel may be sequentially positioned. In addition, to the right of the color filter (1207) of the first green channel, a color filter of the R-1 red channel, a color filter of the R-2 green channel, a color filter of the R-3 red channel, and a color filter of the R-4 green channel may be sequentially positioned. If the spacing of each color filter is about 0.25 mm, the color filter of the L-1 red channel can be compensated by about -0.01 mm, the color filter of the L-2 green channel by about +0.02 mm, the color filter of the L-3 red channel by about 0 mm, and the color filter of the L-4 green channel by about +0.017 mm from the reference height (or, initial height, uncompensated height, uncompensated height) of each color filter. In addition, the color filter of the R-1 red channel can be compensated by about -0.01 mm, the color filter of the R-2 green channel by about +0.02 mm, the color filter of the R-3 red channel by about 0 mm, and the color filter of the R-4 green channel by about +0.017 mm from the reference height of each color filter.

[0067] Alternatively, as illustrated in FIG. 5b, a color filter (1207) of the first green channel may be positioned at the center point of the lens (11). To the left of the color filter (1207) of the first green channel, a color filter of the L-1 red channel, a color filter of the L-2 blue channel, a color filter of the L-3 green channel, and a color filter of the L-4 red channel may be sequentially positioned. In addition, to the right of the color filter (1207) of the first green channel, a color filter of the R-1 blue channel, a color filter of the R-2 red channel, a color filter of the R-3 green channel, and a color filter of the R-4 blue channel may be sequentially positioned. From the reference height of each color filter, the color filter of the L-1 red channel may be compensated by about -0.01 mm, the color filter of the L-2 blue channel by about +0.025 mm, the color filter of the L-3 green channel by about +0.017 mm, and the color filter of the L-4 red channel by 0 mm. Additionally, from the reference height of each color filter, the color filter of the R-1 blue channel can be compensated by approximately +0.025 mm, the color filter of the R-2 red channel by approximately +0.017 mm, and the color filter of the R-4 blue channel by approximately +0.02 mm.

[0068] The height of each color filter described above can be set to different heights (or compensated, corrected, changed) based on chromatic aberration data depending on the characteristics of the lens (11), the color channel, and / or the position on the plane (or the distance from the center point of the lens).

[0069] FIGS. 6A and 6B are drawings illustrating the arrangement of color filters according to various embodiments.

[0070] Referring to FIG. 6A, a color filter layer (13) is illustrated in which color filters (1301, 1302, 1303) including different color channels are arranged adjacent to each other. The color filter layer (13) may have color filters (1301, 1302, 1303) including different color channels arranged adjacent to each other. For example, a color filter (1301) including a red channel may be arranged on one side of a color filter (1302) including a green channel, and a color filter (1303) including a blue channel may be arranged on the other side. In this case, one micro lens may be arranged to correspond to one color filter. In other words, the number of micro lenses may be equal to the number of color filters. If the chromatic aberration of the micro lens corresponding to the color filter (1302) including the green channel is 0, the chromatic aberration of the micro lens corresponding to the color filter (1301) including the surrounding red channel and / or the micro lens corresponding to the color filter (1303) including the blue channel may be + / -.

[0071] Referring to FIG. 6B, a color filter layer (13) is illustrated in which color filters including a plurality of identical color channels are adjacently arranged. The color filter layer (13) may have color filters (1301, 1302, 1303) including a plurality of identical color channels adjacently arranged to form color channel regions (21, 22, 23). For example, color filters including four green channels may be adjacently arranged to form a green channel region (21), color filters including four red channels may be adjacently arranged to form a red channel region (22), and color filters including four blue channels may be adjacently arranged to form a blue channel region (23). Alternatively, a color filter including one green channel may form four pixels, a color filter including one red channel may form four pixels, and a color filter including one blue channel may form four pixels. In this case, one microlens may be arranged to correspond to one color filter or to correspond to one color filter region. For example, if one microlens is arranged to correspond to one color filter, the image sensor may include n microlenses corresponding to n color filters. Alternatively, if one microlens is arranged to correspond to one color filter region, one microlens may be arranged to correspond to one color filter region formed by m color filters. If the chromatic aberration of the microlens corresponding to the region (21) of the color filter including the green channel is 0, the chromatic aberration of the microlens corresponding to the region (22) of the color filter including the surrounding red channel and / or the microlens corresponding to the region (23) of the color filter including the blue channel may be + / -.

[0072] So far, we've described various examples of correcting axial chromatic aberration, where focal length varies depending on refractive index. Below, we'll describe various examples of correcting longitudinal chromatic aberration.

[0073] FIG. 7a and FIG. 7b are drawings explaining longitudinal chromatic aberration according to various embodiments.

[0074] Fig. 7a illustrates the relationship between the distance between the lens (11) and the microlens layer (12) and the chief ray angle (CRA). As the distance between the lens (11) and the microlens layer (12) increases, the CRA angle may increase. The CRA of the red channel, green channel, and blue channel light all increase, but the amount of increase may vary depending on the color channel. For example, the CRA of the red channel light may be relatively small and the CRA of the blue channel light may be relatively large based on the CRA of the green channel light. Alternatively, depending on the position, structure, and / or design of the lens, the CRA of the red channel light may be relatively large and the CRA of the blue channel light may be relatively small based on the CRA of the green channel light.

[0075] Fig. 7b illustrates longitudinal chromatic aberration and a correction method. The position at which the focus of light passing through the lens (11) is formed may vary with respect to the optical axis. Even if the distance between the lens (11) and the microlens layer (12) is the same, longitudinal chromatic aberration may vary depending on the color channel. The camera can move the microlens to a position corresponding to the CRA to correct longitudinal chromatic aberration. For example, the position of the microlens corresponding to the color channel can be moved to a position corresponding to the CRA.

[0076] FIGS. 8 and 9 are drawings illustrating micro lenses that correct chromatic aberration according to various embodiments.

[0077] Referring to FIG. 8, an example of moving the position of a microlens to correct longitudinal chromatic aberration is illustrated. For example, longitudinal chromatic aberration may refer to the degree of misalignment of the focus position of a color channel based on the light of the green channel. Accordingly, the microlens (1212) corresponding to the green channel of the center field of the lens (11) may be positioned in the fixed position (or may not be moved). The microlens (1212) corresponding to the green channel of the middle field between the center field and the outer field of the lens (11) may be moved relatively slightly to a position corresponding to the CRA. The microlens (1212) corresponding to the green channel of the edge field of the lens (11) may be moved relatively large to a position corresponding to the CRA. The amount of movement of the microlens may be calculated based on the CRA graph for each color channel illustrated in FIG. 7A, and the longitudinal chromatic aberration may be compensated for as the reciprocal value of the CRA value.

[0078] Similar to the microlens (1212) corresponding to the green channel, the microlens (1211) corresponding to the red channel and / or the microlens (1213) corresponding to the blue channel can also compensate for longitudinal chromatic aberration. For example, since the CRA of the red channel light is relatively small based on the CRA of the green channel light, the microlens (1211) corresponding to the red channel can be moved relatively small based on the fixed position in each region of the lens (e.g., middle field, edge field). As illustrated in FIG. 8, considering the amount of movement based on the longitudinal chromatic aberration compensation position of the microlens (1212) corresponding to the green channel, the microlens (1211) corresponding to the red channel can be moved in the opposite direction to the movement position of the microlens (1212) corresponding to the green channel (less shrink).

[0079] In addition, since the CRA of the blue channel light is relatively large based on the CRA of the green channel light, the microlens (1213) corresponding to the blue channel can be moved relatively more based on the fixed position in each region of the lens (e.g., middle field, edge field). As illustrated in FIG. 8, considering the amount of movement based on the longitudinal chromatic aberration compensation position of the microlens (1212) corresponding to the green channel, the microlens (1213) corresponding to the blue channel can be moved more in the same direction as the movement position of the microlens (1212) corresponding to the green channel (more shrink). The microlens whose longitudinal chromatic aberration is corrected based on the CRA value according to the color channel can transmit the light of the color channel to the central region of the photosensitive element.

[0080] Referring to FIG. 9, micro lenses (1201, 1202a, 1202b, 1203) are shown moved to positions corresponding to the CRA based on the color filters (1301, 1302a, 1302b, 1303). As an example, when the micro lenses (1201, 1202a, 1202b, 1203) are moved as described in FIG. 8, the micro lenses (1201, 1202a, 1202b, 1203) may be arranged as in the example illustrated in FIG. 9. In some cases, interference may occur between the moved micro lenses. Therefore, the micro lenses (1201, 1202a, 1202b, 1203) of this document may include different refractive indices depending on the color channel. Additionally, the microlenses can be moved so that light can be collected in the central region of the photosensitive element based on the refractive index according to the chief ray angle and color channel.

[0081] For example, since the CRA of the blue channel light is relatively large based on the CRA of the green channel light, the refractive index of the microlens (1203) corresponding to the blue channel may be greater than the refractive index of the microlens (1202a, 1202b) corresponding to the green channel. In this case, the amount of movement of the microlens (1203) corresponding to the blue channel may be smaller. Alternatively, the refractive index of the microlens (1201) corresponding to the red channel may be greater than the refractive index of the microlens (1202a, 1202b) corresponding to the green channel. In this case, the amount of movement of the microlens (1203) corresponding to the red channel may be smaller or may be moved in the opposite direction. The movement of the microlens to correct longitudinal chromatic aberration may be smaller or may be moved in the opposite direction by differentiating the refractive index according to the color channel. By differentiating the refractive index of the microlens according to the color channel, interference between the moved microlenses can be prevented.

[0082] The camera (180) of this document (e.g., the camera module (180) of FIG. 1) may be included in an electronic device (e.g., the electronic device (101) of FIG. 1). In addition, the electronic device (101) may include a processor (e.g., the processor (120) of FIG. 1). The processor may control the camera (180) to capture an image.

[0083] For example, the image sensor (20) may include a color filter layer (13) including at least one color channel and a plurality of color filters (1301, 1302, 1303) arranged on one plane of the image sensor (20), a microlens layer (12) including a plurality of microlenses (1201, 1202, 1203) arranged on an upper portion of the color filter layer (13), and a photosensitive element layer (14) including a plurality of photosensitive elements (1401, 1402, 1403) corresponding to the plurality of color filters (1301, 1302, 1303). The plurality of microlenses (1201, 1202, 1203) may be set to different heights to match the focal lengths of the color channels of light corresponding to the color filters based on chromatic aberration data according to the color channels of light.

[0084] For example, the height of each of the plurality of micro lenses (1201, 1202, 1203) can be set based on a value that reversely compensates for chromatic aberration according to the color channel of light of the chromatic aberration data.

[0085] For example, the chromatic aberration data may be the difference value between the wavelength data of light corresponding to each color channel that passed through the lens (11) at the same location and the reference data as the characteristic data of the lens (11) for the wavelength of light corresponding to the color channel.

[0086] For example, the characteristic data of the lens (11) can be determined by at least one of the shape and physical properties of the lens (11).

[0087] For example, the plurality of micro lenses (1201, 1202, 1203) may have different refractive indices to match the focal length of the color channel of the light based on the color channel of the light and the set height of the micro lenses.

[0088] For example, the color filter layer (13) may be arranged adjacent to color filters containing different color channels.

[0089] For example, the micro lens layer (12) may have one micro lens arranged corresponding to one color filter.

[0090] For example, the color filter layer (13) may be arranged so that color filters including a preset number of identical color channels are adjacent to each other.

[0091] For example, the color filter layer (13) may be arranged so that one color filter includes a plurality of adjacent pixels.

[0092] For example, the micro lens layer (12) may be arranged so that one micro lens corresponds to one color filter including the plurality of pixels.

[0093] For example, each of the plurality of micro lenses (1201, 1202, 1203) can be moved and positioned to a position corresponding to a chief ray angle (CRA) according to the position of the photosensitive element layer.

[0094] For example, the plurality of micro lenses (1201, 1202, 1203) may have different refractive indices depending on the color channel. Each of the plurality of micro lenses (1201, 1202, 1203) may be arranged to move in a plane with respect to the central region of the photosensitive element based on the chief ray angle (CRA) and the refractive index according to the position of the photosensitive element layer (14).

[0095] For example, a camera (180) may include a lens (11) and an image sensor (20). The image sensor (20) may include a color filter layer (13) including at least one color channel and a plurality of color filters (1301, 1302, 1303) arranged on one plane of the image sensor (20), a micro lens layer (12) including a plurality of micro lenses (1201, 1202, 1203) arranged on an upper portion of the color filter layer (13), and a photosensitive element layer (14) including a plurality of photosensitive elements (1401, 1402, 1403) corresponding to the plurality of color filters (1301, 1302, 1303). The above plurality of micro lenses (1201, 1202, 1203) can be set to different heights to match the focal length of the color channel of the light corresponding to the color filter based on chromatic aberration data according to the color channel of the light incident on the lens (11).

[0096] For example, the height of each of the plurality of micro lenses (1201, 1202, 1203) can be set based on a value that reversely compensates for chromatic aberration according to the color channel of light of the chromatic aberration data.

[0097] For example, the camera (180) may further include at least one prism (17) that changes the path of the light.

[0098] For example, the chromatic aberration data may be a difference value between the wavelength data of light corresponding to each color channel that passed through the lens (11) and the at least one prism (11) at the same location and the reference data.

[0099] For example, the plurality of micro lenses (1201, 1202, 1203) may have different refractive indices to match the focal length of the color channel of the light based on the color channel of the light and the set height of the micro lenses.

[0100] For example, each of the plurality of micro lenses (1201, 1202, 1203) can be moved and positioned to a position corresponding to a chief ray angle (CRA) according to the position of the photosensitive element layer (14).

[0101] For example, the plurality of micro lenses (1201, 1202, 1203) may have different refractive indices depending on the color channel. Each of the plurality of micro lenses (1201, 1202, 1203) may be arranged to move in a plane with respect to the central region of the photosensitive element based on the chief ray angle (CRA) and the refractive index according to the position of the photosensitive element layer (14).

[0102] For example, the electronic device (101) may include a camera (180) and at least one processor (120) controlling the camera (180). The camera (180) may include a lens (11) and an image sensor (20). The image sensor (20) may include a color filter layer (13) including at least one color channel and a plurality of color filters (1301, 1302, 1303) arranged on one plane of the image sensor (20), a micro lens layer (12) including a plurality of micro lenses (1201, 1202, 1203) arranged on an upper portion of the color filter layer (13), and a photosensitive element layer (14) including a plurality of photosensitive elements (1401, 1402, 1403) corresponding to the plurality of color filters (1301, 1302, 1303). The above plurality of micro lenses (1201, 1202, 1203) can be set to different heights to match the focal length of the color channel of the light corresponding to the color filter based on chromatic aberration data according to the color channel of the light incident on the lens (11).

[0103] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0104] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0105] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.

[0106] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smart phones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily generated in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0107] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and arranged in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0108] The effects of this document are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the above description.

Claims

1. In the image sensor, A color filter layer comprising at least one color channel and a plurality of color filters arranged on one plane of the image sensor; A micro lens layer including a plurality of micro lenses arranged on top of the color filter layer; and A photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters; The above multiple micro lenses are, An image sensor whose heights are set to different values ​​to match the focal lengths of the color channels of light corresponding to the color filters based on chromatic aberration data according to the color channels of light.

2. In paragraph 1, Each of the above multiple micro lenses An image sensor in which the height is set based on a value that reversely compensates for chromatic aberration according to the color channel of light of the above chromatic aberration data.

3. In paragraph 1, The above chromatic aberration data is, An image sensor, wherein the characteristic data of the lens or the characteristic data of the lens and prism for the wavelength of light corresponding to the color channel is the difference value between the wavelength data of light corresponding to each color channel that passed through at least one of the lens and the prism at the same location and the reference data.

4. In paragraph 3, The characteristic data of the above lens is, An image sensor determined by at least one of the shape and properties of the lens.

5. In paragraph 1, The above multiple micro lenses are, An image sensor having different refractive indices to match the focal length of the color channel of the light based on the color channel of the light and the set height of the micro lens.

6. In paragraph 1, The above color filter layer, An image sensor in which color filters containing different color channels are arranged adjacent to each other.

7. In paragraph 6, The above micro lens layer, An image sensor in which one micro lens is arranged corresponding to one color filter.

8. In paragraph 1, The above color filter layer, An image sensor in which color filters containing a preset number of identical color channels are arranged adjacently.

9. In paragraph 1, The above color filter layer, An image sensor in which a single color filter is arranged to include a plurality of adjacent pixels.

10. In paragraph 9, The above micro lens layer, An image sensor wherein one micro lens is arranged to correspond to one color filter including the plurality of pixels.

11. In paragraph 1, Each of the above plurality of micro lenses, An image sensor that is moved and placed at a position corresponding to the chief ray angle (CRA) according to the position of the above photosensitive element layer.

12. In paragraph 11, The above plurality of micro lenses include different refractive indices according to the color channel, Each of the above plurality of micro lenses, An image sensor that is arranged to move on a plane based on the chief ray angle (CRA) and the refractive index according to the position of the photosensitive element layer with the central region of the photosensitive element as the reference.

13. Lens; and An image sensor; comprising: The above image sensor, A color filter layer comprising at least one color channel and a plurality of color filters arranged on one plane of the image sensor; A micro lens layer including a plurality of micro lenses arranged on top of the color filter layer; and A photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters; The above multiple micro lenses are, A camera whose heights are set to be different so as to match the focal lengths of the color channels of the light corresponding to the color filters based on chromatic aberration data according to the color channels of the light incident on the lens.

14. In paragraph 13, Each of the above multiple micro lenses A camera whose height is set based on a value that reversely compensates for chromatic aberration according to the color channel of the light of the above chromatic aberration data.

15. Camera; and comprising at least one processor controlling the camera; The above camera, lens; and An image sensor; comprising: The above image sensor, A color filter layer comprising at least one color channel and a plurality of color filters arranged on one plane of the image sensor; A micro lens layer including a plurality of micro lenses arranged on top of the color filter layer; and A photosensitive element layer including a plurality of photosensitive elements corresponding to the plurality of color filters; The above multiple micro lenses are, An electronic device in which the focal lengths of the color channels of light incident on the lens are set to different heights based on chromatic aberration data according to the color channels of the light corresponding to the color filter.

Images