Optical system and electronic device including same

Abstract

According to an embodiment disclosed herein, an electronic device may be provided. The electronic device may comprise an optical system. The optical system may include: a lens group including lenses arranged along an optical axis in a direction from an object side to an image side, the lens group including a first lens, which is closest to the object side among the lenses, includes an object-side surface convex toward the object side, and has positive refractive power, and a second lens, which is second closest to the object side among the lenses, is formed concave toward the image side, and has negative refractive power; an image sensor including an imaging surface on which an image is formed; an optical member disposed between the lens group and the image sensor and configured to change the path of light that has passed through the lens group; an aperture; and a light shield located between the optical member and the image sensor and including an opening through which light passes.

Description

Optical system and electronic device including the same

[0001] Examples of the present disclosure relate to optical systems and electronic devices including the same.

[0002] Optical devices, such as cameras capable of capturing images or videos, have been widely used. While film-based optical devices were dominant in the past, recently, digital cameras and video cameras equipped with solid-state image sensors, such as CCD (charge coupled device) or CMOS (complementary metal-oxide semiconductor), have become widely popular. Optical devices employing solid-state image sensors (CCD or CMOS) are gradually replacing film-based optical devices because they make it easier to store, duplicate, and transfer images compared to film-based optical devices.

[0003] To acquire high-quality images and / or videos, an optical device may include an optical system (or optical system) composed of multiple lenses and an image sensor having a high pixel count. The optical system can acquire high-quality (high-resolution) images and / or videos by, for example, having a low F-number (Fno) and low aberration. To obtain a low F-number and low aberration—in other words, to obtain bright and high-resolution images—it is necessary to combine multiple lenses. The pixel count of an image sensor increases as it contains more pixels, and an image sensor with a higher pixel count can acquire high-resolution (high-resolution) images and / or videos. To implement a high-pixel image sensor within the limited mounting space of an electronic device, multiple very small pixels, for example, micrometer-sized pixels, may be arranged. Recently, image sensors containing tens of millions to hundreds of millions of micrometer-sized pixels are being installed in portable electronic devices such as smartphones and tablets. Such high-performance optical devices can have the effect of inducing users to purchase electronic devices.

[0004] The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0005] According to one embodiment of the present disclosure, an electronic device may be provided. The electronic device may include an optical system. The optical system may include a lens group comprising lenses arranged along an optical axis in a direction from the object side toward the image side, wherein the lens group comprises a first lens among the lenses that is closest to the object side, has an object side surface that is convex toward the object side, and has a positive refractive power, and a second lens among the lenses that is second closest to the object side, is formed concave toward the image side, and has a negative refractive power; an image sensor comprising an image plane where an image is formed; an optical member disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group; an aperture; and a shield disposed between the optical member and the image sensor, wherein the shield comprises an opening through which light passes. The optical system may satisfy the following [Equation 1].

[0006] [Equation 1]

[0007] 0.6 < Bd / LSd < 0.8

[0008] (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

[0009] According to one embodiment of the present disclosure, an optical system may be provided. The optical system may include a lens group comprising lenses arranged along an optical axis in a direction from the object side toward the image side, wherein the lens group comprises a first lens among the lenses that is closest to the object side, has an object side surface that is convex toward the object side, and has a positive refractive power, and a second lens among the lenses that is second closest to the object side, is formed concave toward the image side, and has a negative refractive power; an image sensor comprising an image plane formed at an angle with respect to a first direction in which the lenses are arranged, wherein an image is formed; an optical member disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group; an aperture; and a shield disposed between the optical member and the image sensor, wherein the shield comprises an opening through which light passes. The optical system may satisfy the following [Equation 1].

[0010] [Equation 1]

[0011] 0.6 < Bd / LSd < 0.8

[0012] (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

[0013] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment of the present disclosure.

[0014] FIG. 2 is a block diagram illustrating a camera module according to one embodiment of the present disclosure.

[0015] FIG. 3 is a front perspective view of an electronic device according to one embodiment of the present disclosure.

[0016] FIG. 4 is a rear perspective view of an electronic device according to one embodiment of the present disclosure.

[0017] Figure 5 is a partial enlarged view of the rear of an electronic device to illustrate the arrangement of the optical system.

[0018] FIG. 6 is a perspective view of an optical system according to one embodiment of the present disclosure.

[0019] FIG. 7 is a cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure.

[0020] FIG. 8a is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure.

[0021] FIG. 8b is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure.

[0022] FIG. 9a is a configuration diagram showing an optical system according to one embodiment of the present disclosure.

[0023] FIG. 9b is a graph showing the spherical aberration of the optical system of FIG. 9a according to one embodiment of the present disclosure.

[0024] FIG. 9c is a graph showing the astigmatism of the optical system of FIG. 9a according to one embodiment of the present disclosure.

[0025] FIG. 9d is a graph showing the distortion rate of the optical system of FIG. 9a according to one embodiment of the present disclosure.

[0026] FIG. 10a is a schematic diagram showing an optical system according to one embodiment of the present disclosure.

[0027] FIG. 10b is a graph showing the spherical aberration of the optical system of FIG. 10a according to one embodiment of the present disclosure.

[0028] FIG. 10c is a graph showing the astigmatism of the optical system of FIG. 10a according to one embodiment of the present disclosure.

[0029] FIG. 10d is a graph showing the distortion rate of the optical system of FIG. 10a according to one embodiment of the present disclosure.

[0030] FIG. 11a is a schematic diagram showing an optical system according to one embodiment of the present disclosure.

[0031] FIG. 11b is a graph showing the spherical aberration of the optical system of FIG. 11a according to one embodiment of the present disclosure.

[0032] FIG. 11c is a graph showing the astigmatism of the optical system of FIG. 11a according to one embodiment of the present disclosure.

[0033] FIG. 11d is a graph showing the distortion rate of the optical system of FIG. 11a according to one embodiment of the present disclosure.

[0034] FIG. 12a is a configuration diagram showing an optical system according to one embodiment of the present disclosure.

[0035] FIG. 12b is a graph showing the spherical aberration of the optical system of FIG. 12a according to one embodiment of the present disclosure.

[0036] FIG. 12c is a graph showing the astigmatism of the optical system of FIG. 12a according to one embodiment of the present disclosure.

[0037] FIG. 12d is a graph showing the distortion rate of the optical system of FIG. 12a according to one embodiment of the present disclosure.

[0038] Throughout the attached drawings, similar parts, configurations, and / or structures may be assigned similar reference numbers.

[0039] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to one embodiment of the present disclosure. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with an electronic device (102) through 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) through 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) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In one embodiment, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In one embodiment, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0040] The processor (120) can control at least one other component (e.g., hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., program (140)), for example, and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., sensor module (176) or communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., central processing unit or application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., graphics processing unit, neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor). For example, if the electronic device (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use lower power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0041] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) 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. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (108)). The learning algorithm may 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 may include a plurality of artificial neural network layers.An artificial neural network may be 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 the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0042] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0043] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0044] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0045] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0046] The display module (160) can visually provide information to an external (e.g., 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 said device. According to 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 the force generated by said touch.

[0047] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphones) that is directly or wirelessly connected to the electronic device (101).

[0048] The sensor module (176) can detect the operating state of the electronic device (101) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0049] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (e.g., electronic device (102)). According to 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.

[0050] The connection terminal (178) may include a connector through which the electronic device (101) can 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).

[0051] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that can be perceived by the user through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0052] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0053] 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 part of a power management integrated circuit (PMIC).

[0054] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0055] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an 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 include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and 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., cellular communication module, short-range wireless communication module, or GNSS (globjal navigation satellite system) communication module) or a wired communication module (194) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device through a first network (198) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., 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 may 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 identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0056] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. The NR access technology can support high-speed transmission of high-capacity data (enhanced mobile broadband eMBB), minimization of terminal power and connection of multiple terminals (massive machine type communications mMTC), or high reliability and low latency (ultra-reliable and low-latency communications URLLC). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), full-dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module (192) can support various requirements specified by the electronic device (101), an external electronic device (e.g., electronic device (104)), or a network system (e.g., a second network (199)). According to one embodiment, the wireless communication module (192) may support a Peak data rate (e.g., 20 Gbps or more) for eMBB realization, loss coverage (e.g., 164 dB or less) for mMTC realization, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for URLLC realization.

[0057] An antenna module (197) can transmit a signal or power to or from an external source (e.g., an external electronic device). According to one embodiment, the antenna module may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to 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 a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). The 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. According to one embodiment, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

[0058] According to one embodiment, 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 to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0059] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0060] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) through 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 performed on the electronic device (101) may be performed on one or more of the external electronic devices (102, 104 or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) may request one or more external electronic devices to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the above request may execute at least part of the requested function or service, or 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 provide the result as is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. 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 neural networks. According to one embodiment, the external electronic device (104) or the server (108) may be included within 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.

[0061] FIG. 2 is a block diagram (200) illustrating a camera module (290) (e.g., camera module (180) of FIG. 1) according to one embodiment of the present disclosure. Referring to FIG. 2, the camera module (290) may include an optical system (280), a flash (220), an image sensor (230), an image stabilizer (240), a memory (250) (e.g., buffer memory), or an image signal processor (260). In one embodiment, the optical system (280) may include an image sensor (230). The optical system (280) may collect light emitted from a subject that is the target of image capture. The optical system (280) may include one or more lenses. According to one embodiment, the camera module (290) may include a plurality of optical systems (280). In this case, the camera module (290) may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of optical systems (280) may have the same lens properties (e.g., angle of view, focal length, F-number, or optical zoom), or at least one The optical system may have one or more lens properties different from the lens properties of other optical systems. The optical system (280) may include, for example, a wide-angle lens or a telephoto lens.

[0062] A flash (220) may emit light used to enhance light emitted or reflected from a subject. According to one embodiment, the flash (220) may include one or more light-emitting diodes (e.g., RGB (red-green-blue) LED, white LED, infrared LED, or ultraviolet LED), or a xenon lamp. An image sensor (230) may acquire an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through an optical system (280) into an electrical signal. According to one embodiment, the image sensor (230) may include, for example, one image sensor selected from image sensors with different properties such as an RGB sensor, a BW (black and white) sensor, an IR sensor, or a UV sensor, a plurality of image sensors having the same properties, or a plurality of image sensors having different properties. Each image sensor included in the image sensor (230) may be implemented using, for example, a CCD (charged coupled device) sensor or a CMOS (complementary metal oxide semiconductor) sensor.

[0063] The image stabilizer (240) can move at least one lens or image sensor (230) included in the optical system (280) in a specific direction or control the operational characteristics of the image sensor (230) (e.g., adjusting read-out timing, etc.) in response to the movement of the camera module (290) or the electronic device (101) including the same. This allows for compensating for at least some of the negative effects caused by the movement on the image being captured. According to one embodiment, the image stabilizer (240) can detect the movement of the camera module (290) or the electronic device (e.g., the electronic device (101) of FIG. 1) using a gyroscope sensor (not shown) or an accelerometer sensor (not shown) placed inside or outside the camera module (290). According to one embodiment, the image stabilizer (240) can be implemented, for example, as an optical image stabilizer. The memory (250) may temporarily store at least a portion of an image acquired through the image sensor (230) for the next image processing operation. For example, if image acquisition by the shutter is delayed or multiple images are acquired at high speed, the acquired original image (e.g., a Bayer-patterned image or a high-resolution image) is stored in the memory (250), and the corresponding copy image (e.g., a low-resolution image) can be previewed through the display module (160) of FIG. 1. Subsequently, when a specified condition is satisfied (e.g., user input or system command), at least a portion of the original image stored in the memory (250) may be acquired and processed by, for example, an image signal processor (260). According to one embodiment, the memory (250) may be configured as at least a portion of the memory (e.g., the memory (130) of FIG. 1) or as a separate memory that operates independently thereof.

[0064] The image signal processor (260) can perform one or more image processing operations on an image acquired through the image sensor (230) or an image stored in memory (250). The one or more image processing operations may include, for example, depth map generation, 3D modeling, panorama generation, feature point extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softing). Additionally or generally, the image signal processor (260) can perform control (e.g., exposure time control, or readout timing control, etc.) over at least one of the components included in the camera module (290) (e.g., image sensor (230)). An image processed by the image signal processor (260) may be stored back in memory (250) for further processing or provided to an external component of the camera module (290) (e.g., memory (130) of FIG. 1, display module (160), electronic device (102), electronic device (104), or server (108)). According to one embodiment, the image signal processor (260) may be composed of at least part of a processor (e.g., processor (120) of FIG. 1) or may be composed of a separate processor that operates independently of the processor (120). If the image signal processor (260) is composed of a separate processor from the processor (120), at least one image processed by the image signal processor (260) may be displayed through the display module (160) as is or after further image processing by the processor (120).

[0065] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1) may include a plurality of camera modules (290) each having different attributes or functions. In this case, for example, at least one of the plurality of camera modules (290) may be a wide-angle camera and at least another may be a telephoto camera. Similarly, at least one of the plurality of camera modules (290) may be a front camera and at least another may be a rear camera.

[0066] FIG. 3 is a front perspective view of an electronic device according to one embodiment of the present disclosure. FIG. 4 is a rear perspective view of an electronic device according to one embodiment of the present disclosure. FIG. 5 is a partial enlarged view of the rear of the electronic device to explain the arrangement of an optical system.

[0067] The configuration of the electronic device (101) of FIGS. 3 and 4 may be the same as, in whole or in part, the configuration of the electronic device (101) of FIG. 1.

[0068] Referring to FIGS. 3 and 4, an electronic device (101) according to one embodiment may include a housing (210) comprising a first surface (or front) (210A), a second surface (or rear) (210B), and a side (210C) surrounding the space between the first surface (210A) and the second surface (210B). In one embodiment (not shown), the housing (210) may refer to a structure forming some of the first surface (210A) of FIG. 2, the second surface (210B) and the side (210C) of FIG. 3. According to one embodiment, the first surface (210A) may be formed by a front flare (202) that is at least partially transparent (e.g., a glass flare or a polymer flare comprising various coating layers). The second surface (210B) may be formed by a rear flare (211) that is substantially opaque. The rear flare (211) may be formed, for example, by coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS), or magnesium), or a combination of at least two of the above materials. The side (210C) may be formed by a side structure (or "side bezel structure") (218) comprising metal and / or polymer, which is combined with the front flare (202) and the rear flare (211). In one embodiment, the rear flare (211) and the side structure (218) may be formed integrally and may comprise the same material (e.g., a metallic material such as aluminum).

[0069] Although not illustrated, the front flare (202) may include region(s) that are curved and seamlessly extended toward the rear flare (211) at least a portion of the edge. In one embodiment, the front flare (202) (or the rear flare (211)) may include only one of the regions that are curved and extended toward the rear flare (211) (or the front flare (202)) at one edge of the first surface (210A). According to an embodiment, the front flare (202) or the rear flare (211) may be substantially flat in shape, in which case it may not include the curved and extended region. If it includes the curved and extended region, the thickness of the electronic device (101) in the portion containing the curved and extended region may be smaller than the thickness of the other portion.

[0070] According to one embodiment, the electronic device (101) may include one or more of a display (201), an audio module (not shown) including at least one acoustic hole (203, 207, 214) (e.g., audio module (170) of FIG. 1), a sensor module (204) (e.g., sensor module (176) of FIG. 1), a camera module (205, 212, 213) (e.g., camera module (180) of FIG. 1), a key input device (217) (e.g., input module (150) of FIG. 1), or a connector hole (208, 209) (e.g., connection terminal (178) of FIG. 1). In one embodiment, the electronic device (101) may omit at least one of the components (e.g., key input device (217), or light-emitting element (206)) or additionally include other components.

[0071] According to one embodiment, the display (201) may be visually exposed, for example, through a significant portion of the front flare (202). In one embodiment, at least a portion of the display (201) may be visually exposed through the front flare (202) forming the first surface (210A) or through a portion of the side (210C). In one embodiment, the corners of the display (201) may be formed to be generally identical to the adjacent outer shape of the front flare (202). In one embodiment (not shown), in order to expand the area where the display (201) is visually exposed, the gap between the outer edge of the display (201) and the outer edge of the front flare (202) may be formed to be generally identical.

[0072] In one embodiment (not shown), a recess or opening is formed in a part of the screen display area of ​​the display (201), and at least one of an acoustic hole (214), a sensor module (204), a camera module (205), and a light-emitting element (206) may be included that are aligned with the recess or the opening. In one embodiment (not shown), at least one of an acoustic hole (214), a sensor module (204), a camera module (205), a fingerprint sensor (not shown), and a light-emitting element (206) may be included on the back surface of the screen display area of ​​the display (201). In one embodiment (not shown), the display (201) may be combined with or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer that detects a magnetic field type stylus pen. In one embodiment, at least a portion of the sensor module (204) and / or at least a portion of the key input device (217) may be placed on the side (210C).

[0073] According to one embodiment, an audio module (not shown) may include a microphone hole (203) and acoustic holes (207, 214). A microphone for acquiring external sound may be placed inside the microphone hole (203), and in one embodiment, a plurality of microphones may be placed to detect the direction of sound. According to one embodiment, the acoustic holes (207, 214) may include an external acoustic hole (207) and a receiver hole (214) for communication. In one embodiment, the acoustic holes (207, 214) and the microphone hole (203) may be implemented as a single hole, or a speaker may be included in the audio module without acoustic holes (207, 214) (e.g., a piezo speaker).

[0074] According to one embodiment, the sensor module (204) may generate an electrical signal or data value corresponding to an internal operating state of the electronic device (101) or an external environmental state. The sensor module (204) may include, for example, a first sensor module (204) (e.g., a proximity sensor) and / or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on a first surface (210A) of the housing (210). According to an embodiment, an additional sensor module may be disposed on a second surface (210B) of the housing (210). The fingerprint sensor (not shown) may be disposed on the second surface (210B) or side (210C) as well as on the first surface (210A) (e.g., a display (201)) of the housing (210). The electronic device (101) may further include at least one of, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0075] According to one embodiment, the camera modules (205, 212, 213) may include a first camera module (205) facing a first surface (210A) of the electronic device (101), and a second camera module (212) and / or a flash (213) facing a second surface (210B). For example, the first camera module (205) and / or the second camera module (212) may include one or more lenses, an image sensor and / or an image signal processor. According to one embodiment, some of the camera modules (205, 212), some camera modules (205) and / or some sensor modules (e.g., sensor module (204)) may be positioned to be exposed to the outside through at least a portion of the display (201). According to one embodiment, the first camera module (205) may include a punch hole camera disposed inside a hole or recess formed on the back surface of the display (201). For example, the first camera module (205) may receive at least a portion of light incident toward the first surface (210A) (or front) of the electronic device (101) through the display (201) inside the electronic device (101). According to one embodiment, the first camera module (205) and / or sensor module (204) may be disposed in the internal space of the electronic device (101) so as to be in contact with the external environment through a transparent area up to the front flare (202) of the display (201). Additionally, some sensor modules (204) may be disposed in the internal space of the electronic device so as to perform their functions without being visually exposed through the front flare (202).

[0076] According to one embodiment, the second camera module (212) may be placed inside the housing (210) such that the lens is exposed to the second side (210B) (or rear) of the electronic device (101). For example, the camera module (212) may be electrically connected to a printed circuit board (e.g., the printed circuit board (240a) of FIG. 4). For example, the flash (213) may include a light-emitting diode or a xenon lamp. In one embodiment, one or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be placed on one side of the electronic device (101). In one embodiment, the flash (213) may emit infrared light. For example, infrared light emitted from the flash (213) and reflected by a subject may be received through a sensor module (not shown) placed on the second side (210B) of the housing (210). An electronic device (101) or a processor (e.g., the processor (180) of FIG. 1) can detect depth information of a subject based on the time when infrared light is received from the sensor module.

[0077] The camera modules (205, 212, 213) are not limited to the above structure and can be designed in various ways, such as by mounting only some camera modules or adding new camera modules, depending on the structure of the electronic device (101).

[0078] According to one embodiment, the electronic device (101) may include a plurality of camera modules (e.g., dual cameras, or triple cameras) each having different attributes (e.g., angle of view) or functions. For example, a plurality of camera modules (205, 212) including lenses having different angles of view may be configured, and the electronic device (101) may control the camera modules (205, 212) to change the angle of view of the camera modules (205, 212) performed in the electronic device (101) based on a user's selection. For example, at least one of the plurality of camera modules (205, 212) may be a wide-angle camera and at least another may be a telephoto camera. Similarly, at least one of the plurality of camera modules (205, 212) may be a front camera and at least another may be a rear camera. Additionally, the plurality of camera modules (205, 212) may include at least one of a wide-angle camera, a telephoto camera, or an IR (infrared) camera (e.g., a TOF (time of flight) camera, a structured light camera). According to one embodiment, the IR camera may operate as at least part of a sensor module. For example, the TOF camera may operate as at least part of a sensor module (not shown) for detecting the distance to a subject.

[0079] According to one embodiment, a key input device (217) may be disposed on a side (210C) of the housing (210). In one embodiment, the electronic device (101) may not include some or all of the aforementioned key input devices (217), and the key input devices (217) that are not included may be implemented in other forms, such as soft keys, on the display (201). In one embodiment, the key input device may include a sensor module disposed on a second side (210B) of the housing (210).

[0080] According to one embodiment, the light-emitting element (206) may be disposed, for example, on a first surface (210A) of a housing (210). The light-emitting element (206) may, for example, provide state information of an electronic device (101) in the form of light. In one embodiment, the light-emitting element (206) may, for example, provide a light source linked to the process of a camera module (205). The light-emitting element (206) may include, for example, an LED, an IR LED, and a xenon lamp.

[0081] According to one embodiment, the connector holes (208, 209) may include a first connector hole (208) capable of receiving a connector (e.g., USB connector) for transmitting and receiving power and / or data with an external electronic device, and a second connector hole (e.g., earphone jack) (209) capable of receiving a connector for transmitting and receiving audio signals with an external electronic device.

[0082] Referring to FIG. 5, according to one embodiment, the electronic device (101) may include a cover window (215) (or camera deco) disposed on a second surface (210B). In one embodiment, the cover window (215) may be connected to a rear flare (211) or be part of the rear flare (211). According to one embodiment, camera modules (212, 213, 216) may receive light incident toward the second surface (210B) or the cover window (215) of the electronic device (101). According to one embodiment, the cover window (215) may include a plurality of transparent regions (215a). The camera modules (212, 213, 216) may receive light from outside the electronic device (101) or radiate light outward through the transparent regions (215a) of the cover window (215). According to one embodiment, camera modules (212, 213, 216) may include a second-1 camera device (212a), a second-2 camera device (212b), and a second-3 camera device (212c) that are placed inside the electronic device (101) and receive light through transparent areas (215a). For example, the second-1 camera device (212a) and / or the second-2 camera device (212b) may be wide-angle (or ultra-wide-angle) cameras, and the third camera device (212c) may be a telephoto camera. According to one embodiment, camera modules (212, 213, 216) may include a flash (213) and a sensor module (216) (e.g., a distance sensor).

[0083] According to one embodiment, a third camera device (212c) (e.g., a telephoto camera or a folded camera) may include an optical system (400) comprising a lens group (G) that receives light incident through a transparent area (215a) and an optical member (M) (e.g., a prism) configured to reflect the light at least once.

[0084] FIG. 6 is a perspective view of an optical system according to one embodiment of the present disclosure. FIG. 7 is a cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure. FIG. 8a is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure. FIG. 8b is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure.

[0085] Referring to FIGS. 6 through 8b, an electronic device (e.g., the electronic device (101) of FIGS. 1, 3 and 4) may include an optical system (300). An optical system (300) according to one embodiment of the present disclosure may constitute at least a part of a camera module of the electronic device (101) (e.g., the camera module (180) of FIG. 1, the camera module (290) of FIG. 2, the camera module (205) of FIG. 3 and / or the camera module (212) of FIG. 4). According to one embodiment, the electronic device (101) to which the optical system (300) according to one embodiment of the present disclosure is applied may include various electronic devices including a camera module (e.g., tablet PC, drone), or wearable electronic devices formed to be wearable on various body parts such as a user's wrist or face (e.g., smart watch, smart glasses).

[0086] Referring to FIGS. 6 to 8b, according to one embodiment, an optical system (300) may include a lens group (G) comprising a plurality of lenses (L1, L2, L3 and / or L4), an image sensor (I) comprising an image plane (img) on ​​which an image is formed, an optical member (M) (or reflective member) disposed between the lens group (G) and the image sensor (I) and configured to change the path of light passing through the lens group (G), and a shield (B) disposed between the optical member (M) (e.g., a prism and / or a mirror) and the image sensor (I).

[0087] According to one embodiment, the lenses (L1, L2, L3 and / or L4) of the lens group (G) of the optical system (300) may be arranged on an optical axis (O) extending from the object side (or external object, obj) to the image side. According to one embodiment, the optical system (300) may be positioned on an optical axis (O) passing through the centers of a plurality of lenses (L1, L2, L3 and / or L4) from the object side to the image side.

[0088] In the present disclosure, the phrases “arranged on an optical axis (O) extending from the object side (or external object, obj) to the image side” or “aligned along the optical axis (O)” may refer to lenses (L1, L2, L3 and / or L4) being arranged sequentially from the object side toward the image sensor (I). In the embodiments described below, the ordinal numbers “first,” “second,” “third,” and “fourth” assigned to the lenses (L1, L2, L3 and / or L4) may refer to the order in which they are arranged in the direction toward the image sensor (I) from the object side. In one embodiment, the first lens (L1) may be referred to as the “first lens on the object side” or the “lens placed furthest from the image sensor (I),” and the third lens (L3) may be referred to as the “first lens on the image sensor (I) side” or the “lens placed closest to the image sensor (I).”

[0089] According to one embodiment, the image sensor (I) may include an image plane (img) which is a plane on which an image is formed and receives at least a portion of the light focused through an aperture (sto) and / or lenses (L1, L2, L3 and / or L4). According to one embodiment, the image plane (img) of the image sensor (I) may be positioned at an angle with respect to a first direction in which the lenses (L1, L2, L3) of the lens group (G) are arranged. For example, the image plane (img) of the image sensor (I) may be at an angle of about 90 degrees with respect to the first direction in which the lenses (L1, L2, L3 and / or L4) of the lens group (G) are arranged. Referring to FIG. 6, the lens group (G) may include a total of three lenses (L1, L2, L3). Referring to FIG. 7, the lens group (G) is exemplified as including a total of four lenses (L1, L2, L3, L4), but the fourth lens (L4) may be omitted.

[0090] In one embodiment, the optical member (M) may be configured to change the path of light transmitted from the lens group (G) one or more times and may include a reflective surface (M1). According to one embodiment, the optical member (M) may be configured to reflect the path of light transmitted from the lens group (G) one time. For example, light focused or guided by lenses (L1, L2, L3 and / or L4) may be incident through the incident surface (F1) of the optical member (M), refracted or reflected toward the image sensor (I) by the reflective surface (M1), and exited to the outside of the optical member (M) through the exit surface (F2).

[0091] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or a processor (e.g., the processor (120) of FIG. 1) may be configured to perform optical image stabilization (OIS) by rotating or tilting an optical member (M) around a first direction (e.g., z direction) in which the plurality of lenses (L1, L2, L3 and / or L4) are arranged or aligned, and / or around a second direction (e.g., x direction) intersecting the first direction (e.g., pitch direction). Here, the second direction (e.g., x direction) may refer to a direction perpendicular to the first direction (e.g., z direction) that penetrates or exits FIG. 9a.

[0092] According to one embodiment, the shield (B) may include an opening through which light passes (e.g., the opening (B1) in FIG. 6, FIG. 7 and FIG. 8a). For example, among the light passing through the lens group (G) and the optical member (M), the central ray may pass through the opening (B1), and some of the peripheral ray may pass through the opening (B1) while other parts of the peripheral ray may be blocked by the shield (B). According to one embodiment, the aperture of the shield (B) (e.g., Bd in FIG. 9a) may be smaller than the effective aperture of the lens closest to the upper side among the lenses of the lens group (G) (e.g., the third lens (L3) in FIG. 6). According to one embodiment, the maximum diameter of the opening (B1) of the shield (B) (e.g., Bd in FIG. 9a) may be formed to be smaller than the diameter of the aperture (sto). As the maximum diameter of the opening (B1) of the shield (B) (e.g., Bd in FIG. 9a) is set as above, the depth of focus of the periphery of the optical system (300) can be increased, the diffraction limit can be reduced, and the deterioration of optical performance due to rotation or tilt of the optical member (M) for image stabilization (OIS) can be reduced.

[0093] Referring to FIGS. 7, 8a, and 8b, according to one embodiment, an electronic device (e.g., the electronic device (101) of FIGS. 1, 3, and 4) may further include a barrel (10) and a case (20) in which an optical system (300) is housed. For example, a lens group (G) may be housed in the barrel (10), and an optical member (M), a shield (B), and / or an image sensor (I) may be placed in the case (20). According to one embodiment, the shield (B) may include a first part (Ba) and a second part (Bb). According to one embodiment, the first part (Ba) and the second part (Bb) may be configured to be separable from each other. According to one embodiment, the first part (Ba) may be integrally or fixedly connected to the case (20), and the second part (Bb) may be configured to be separable from the case (20) and the first part (Ba). However, the configuration of the shield (B) of the present disclosure is not limited, and for example, the shield (B) may be configured to be detachably connected to the case (20) as a single member, or as an example, the shield (B) may be formed integrally with the case (20). For example, if the shield (B) is configured as a separable type including a first part (Ba) and a second part (Bb) that are detachable from each other, the processing (e.g., etching) to form an opening (B1) in the shield (B) may be easier compared to the case where the shield (B) is configured as a single member.

[0094] According to one embodiment, a first part (Ba) and a second part (Bb) may together form or define an opening (B1). According to one embodiment, a portion of the opening (B1) of the shield (B) may be defined by the first part (Ba), and the remainder of the opening (B1) may be defined by the second part (Bb). According to one embodiment, a second part (Bb) may be included that is detachably connected to the first part (Ba) and forms the shield (B) together with the first part (Ba).

[0095] According to one embodiment, the shield (B) may include a third part (Bw) connected to the end of a second part (Bb). For example, the third part (Bw) may intersect or be perpendicular to the second part (Bb). For example, the third part (Bw) may form a 'T' shape or an 'L' shape with the second part (Bb). According to one embodiment, the third part (Bw) may include a first flare prevention structure (S1) formed on a surface (or inner surface) facing the inside of the case (20) of the third part (Bw). For example, the first flare prevention structure (S1) may be positioned before and / or after the shield (B) and configured to prevent flare that occurs by passing through the optical member (M) and reflecting from the inner surface of the case (20). For example, the first flare prevention structure (S1) may include a plurality of protrusions. According to one embodiment, the case (20) may include a second flare prevention structure (S2) formed on a surface (or inner surface) facing the internal space. For example, the second flare prevention structure (S2) may be configured to reflect a portion of the light passing through the optical member (M). For example, the second flare prevention structure (S2) may include a plurality of protrusions.

[0096] FIG. 6 is a perspective view of an optical system according to one embodiment of the present disclosure. FIG. 7 is a cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure. FIG. 8a is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure. FIG. 8b is a partial cross-sectional perspective view of an optical system and a case according to one embodiment of the present disclosure.

[0097] Referring to FIGS. 6 through 8b, in one embodiment, an electronic device (e.g., the electronic device (101) of FIGS. 1, 3 and 4) may include an optical system (400). The optical system (400) according to one embodiment of the present disclosure may constitute at least a part of the camera module of the electronic device (101) (e.g., the camera module (180) of FIG. 1, the camera module (290) of FIG. 2, the camera module (205) of FIG. 3 and / or the camera module (212) of FIG. 4). According to one embodiment, the electronic device (101) to which the optical system (300) according to one embodiment of the present disclosure is applied may include various electronic devices including a camera module (e.g., tablet PC, drone), or wearable electronic devices formed to be wearable on various body parts such as a user's wrist or face (e.g., smart watch, smart glasses).

[0098] [Example 1]

[0099] FIG. 9a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 9b is a graph showing the spherical aberration of the optical system of FIG. 9a according to one embodiment of the present disclosure. FIG. 9c is a graph showing the astigmatism of the optical system of FIG. 9a according to one embodiment of the present disclosure. FIG. 9d is a graph showing the distortion rate of the optical system of FIG. 9a according to one embodiment of the present disclosure.

[0100] The optical system (400) of FIG. 9a can be referenced to the optical system (300) of FIG. 7 to FIG. 8b.

[0101] Referring to FIGS. 9a through 9d, in one embodiment, an electronic device (e.g., the electronic device (101) of FIGS. 1, 3 and 4) may include an optical system (400). The optical system (400) according to one embodiment of the present disclosure may constitute at least a part of the camera module of the electronic device (101) (e.g., the camera module (180) of FIG. 1, the camera module (290) of FIG. 2, the camera module (205) of FIG. 3 and / or the camera module (212) of FIG. 4). According to one embodiment, the electronic device (101) to which the optical system (300) according to one embodiment of the present disclosure is applied may include various electronic devices including a camera module (e.g., tablet PC, drone), or wearable electronic devices formed to be wearable on various body parts such as a user's wrist or face (e.g., smart watch, smart glasses). The description of the optical system (400) of the embodiments of FIGS. 9a to 9d in the present disclosure may be applied in the same or similar way to the optical systems (400, 600, 700) of the embodiments of FIGS. 10a to 12d.

[0102] According to one embodiment, the lenses (L1, L2, L3) of the lens group of the optical system (400) may be arranged on an optical axis (O) extending from the object side (or external object, obj) to the image side. According to one embodiment, the optical system (400) may be positioned on an optical axis (O) passing through the centers of a plurality of lenses (L1, L2, L3) from the object side to the image side.

[0103] In the present disclosure, the phrases “arranged on an optical axis (O) extending from the object side (or external object, obj) to the image side” or “aligned along the optical axis (O)” may refer to lenses (L1, L2, L3) being arranged sequentially from the object side toward the image sensor (I). In the embodiments described below, the ordinal numbers “first,” “second,” “third,” and “fourth” assigned to the lenses (L1, L2, L3) may refer to the order in which they are arranged in the direction toward the image sensor (I) from the object side. In one embodiment, the first lens (L1) may be referred to as the “first lens on the object side” or the “lens placed furthest from the image sensor (I),” and the third lens (L3) may be referred to as the “first lens on the image sensor (I) side” or the “lens placed closest to the image sensor (I).”

[0104] In describing the configuration of each lens (L1, L2, L3) below, for example, the object side may indicate the direction in which the object (obj) is located, and the image side may indicate the direction in which the image plane (img) where the image is formed is located. According to one embodiment, the lenses (L1, L2, L3) may each include an 'object side surface' which is a surface facing the object (obj) and an 'image side surface' which is a surface facing the image (or image sensor (I)). For example, the first lens (L1) may include an object side surface (S2) and an image side surface (S3). For example, the second lens (L2) may include an object side surface (S4) and an image side surface (S5). For example, the third lens (L3) may include an object side surface (S6) and an image side surface (S7).

[0105] In the following detailed description, the shapes of the subject side surface, which is the surface of the lenses (L1, L2, L3) facing the subject (obj) side, and / or the image side surface, which is the surface facing the image sensor (I) or the imaging plane (img), may be described using the terms "concave" or "convex." Such references to the shapes of the lens surfaces may be descriptions of the shape of the point intersecting the optical axis (O) or the shape of the "paraxial region" around the point intersecting the optical axis (O). "The subject side surface has a concave shape" may describe a shape in which the center of the radius of curvature of the subject side surface is located on the subject (obj) side. "The subject side surface has a convex shape" may describe a shape in which the center of the radius of curvature of the subject side surface is located on the image sensor (I) side. Therefore, even if one surface of a lens (the paraxial region of that surface) is described as having a convex shape, the edge region surrounding the paraxial region of the lens can be concave. Similarly, even if one surface of a lens (the paraxial region of that surface) is described as having a concave shape, the edge region surrounding the paraxial region of the lens can be convex.

[0106] According to one embodiment, at least some of the lenses (L1, L2, L3) of the lens group (G) may have at least one of the subject side surface or image side surface formed as an aspheric surface. For example, by forming the surfaces of the lenses (L1, L2, L3) as aspheric surfaces, spherical aberration that may occur in the lenses can be suppressed, coma in the periphery of the image sensor (I) can be prevented, astigmatism can be easily controlled, and the occurrence of image plane curvature from the center to the periphery of the image plane (img) of the image sensor (I) can be reduced.

[0107] In one embodiment, the first lens (L1) is the lens closest to the subject (obj) side (or the first lens from the subject (obj) side) among the lenses (L1, L2, L3) of the lens group (G), and may have positive refractive power. According to one embodiment, the subject side surface (S3) of the first lens (L1) may have a shape that is convex toward the subject (obj). For example, the shape of the subject side surface (S3) that is convex toward the subject (obj) can suppress the increase in spherical aberration due to the large aperture of the lenses (L1, L2, L3). For example, the subject side surface (S3) and / or image side surface (S4) of the first lens (L1) may be formed as an aspherical surface.

[0108] In one embodiment, the first lens (L1) may be composed of an extra low dispersion lens and the second lens (L2) may be composed of a high dispersion lens, and accordingly, the chromatic aberration correction performance and resolution of the optical system (400) may be secured. According to one embodiment, the lenses (L1, L2, L3) may be made of a material including a synthetic resin. The number and material of the lenses (L1, L2, L3) of the present disclosure are not limited, and, for example, additional lenses may be included or at least one lens may be made of glass material.

[0109] In one embodiment, the second lens (L2) is the second lens from the object (obj) side among the lenses (L1, L2, L3) of the lens group (G) and may have negative refractive power. According to one embodiment, the image side surface (S6) of the second lens (L2) may be formed concavely toward the image side. The shape of the image side surface (S6) concave toward the image side may contribute to reducing or slimming the total length of the optical system (400) and improving aberrations. For example, the object side surface (S5) and / or image side surface (S6) of the second lens (L2) may be formed as an aspherical surface.

[0110] In one embodiment, the third lens (L3) is the third lens from the object (obj) side among the lenses (L1, L2, L3) of the lens group (G) and may have a positive refractive power. According to one embodiment, the image side surface (S8) of the third lens (L3) may be formed convex toward the image side. This shape of the third lens (L3) may be advantageous for correcting peripheral aberrations. For example, the object side surface (S7) and / or image side surface (S8) of the third lens (L3) may be formed as an aspherical surface.

[0111] According to one embodiment, the image sensor (I) may include an image plane (img) that receives at least a portion of light focused through an aperture (sto) and / or lenses (L1, L2, L3) and forms an image. According to one embodiment, the image sensor (I) is a sensor mounted on a circuit board or the like and positioned in alignment with an optical axis, and may respond to light. The image sensor (I) may include, for example, a sensor such as a CMOS (complementary metal-oxide semiconductor) image sensor or a charge coupled device (CCD). The image sensor (I) is not limited thereto and may include, for example, various elements that convert an image of a subject (obj) into an electrical image signal. The image sensor (I) may acquire an image of a subject (obj) by detecting brightness information, grayscale ratio information, color information, etc., of the subject (obj) from light that has passed through a plurality of lenses. According to one embodiment, the imaging plane (img) of the image sensor (I) may be positioned at an angle with respect to a first direction in which the lenses (L1, L2, L3) of the lens group (G) are arranged. For example, the imaging plane (img) of the image sensor (I) may be at an angle of approximately 90 degrees with respect to the first direction in which the lenses (L1, L2, L3) of the lens group (G) are arranged.

[0112] In one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or a processor (e.g., the processor (120) of FIG. 1) may be configured to perform a focus adjustment (e.g., auto focusing (AF)) operation by moving at least one of a plurality of lenses (L1, L2, L3) in a first direction in which the plurality of lenses (L1, L2, L3) are arranged. Here, the first direction may mean a virtual axis (or axial direction) passing through the centers of the lenses (L1, L2, L3) while the lenses (L1, L2, L3) are stationary, and may be parallel to a part of the optical axis (O). However, the configuration that moves to perform focus adjustment (e.g., autofocus (AF)) operation is not limited to multiple lenses (L1, L2, L3), and may be performed by moving an optical member (M) and / or an image sensor (I) under the control of an electronic device (101) and / or a processor (120).

[0113] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or a processor (e.g., the processor (120) of FIG. 1) may be configured to perform optical image stabilization (OIS) by rotating or tilting an optical member (M) around a first direction (e.g., z direction) in which the plurality of lenses (L1, L2, L3) are arranged or aligned, and / or around a second direction (e.g., x direction) intersecting the first direction (e.g., pitch direction). Here, the second direction (e.g., x direction) may refer to a direction perpendicular to the first direction (e.g., z direction) that penetrates or exits FIG. 9a. To perform image stabilization (OIS), the optical member (M) may be rotated or tilted within an angle range of about 1.5 degrees to about 2.5 degrees. According to one embodiment, when the optical member (M) is rotated or tilted, the lenses (L1, L2, L3) and / or the image sensor (I) may be maintained in a stationary state. However, the configuration for moving or rotating to perform image stabilization (OIS) is not limited to the optical member (M), and may be performed by moving a plurality of lenses (L1, L2, L3) and / or the image sensor (I) under the control of the electronic device (101) and / or the processor (120).

[0114] According to one embodiment, the optical member (M) may be positioned between the lens group (G) and the image sensor (I). According to one embodiment, the optical member (M) may include an optical system (400) to implement a folded optical system (or folded camera). The optical member (M) may be configured to refract and / or reflect light that passes through the lenses (L1, L2, L3) of the lens group (G) and is incident on the image sensor (I).

[0115] In one embodiment, the optical member (M) may be configured to change the path of light transmitted from the lenses (L1, L2, L3) of the lens group (G) one or more times and may include a reflective surface (M1). According to one embodiment, the optical member (M) may be configured to reflect the path of light transmitted from the lens group (G) one time. For example, light focused or guided by the lenses (L1, L2, L3) may be incident through the subject side surface (S9) of the optical member (M) (e.g., the incident surface (F1) in FIGS. 7 to 8b), refracted or reflected toward the image sensor (I) by the reflective surface (S10) (e.g., the reflective surface (M1) in FIGS. 7 to 8b), and may be emitted to the outside of the optical member (M) through the image side surface (S10) (e.g., the exit surface (F2) in FIGS. 7 to 8b). For example, the path of the chief ray of a beam of light passing through the optical member (M) may intersect or be orthogonal to the chief ray incident on the optical system (400). According to one embodiment, the angle (e.g., α in FIG. 5) that the reflective surface (M1) makes with a plane perpendicular to the chief ray of the beam of light incident on the optical member (M) (e.g., incident plane or subject side surface (S8)) may be about 40 to about 50 degrees, for example, about 45 degrees.

[0116] According to one embodiment, the optical member (M) may be a prism comprising at least one reflective surface (M1). For example, the cross-section of such a prism parallel to the optical axis (O) may be triangular. For example, if the reflective surface (M1) is configured to reflect light without refraction, the optical member (M) may be a mirror comprising the reflective surface (M1).

[0117] For example, when including a high-performance, large-sized image sensor (I), the quality of the captured image of an electronic device (e.g., the electronic device (101) of FIG. 3 and FIG. 4) may be improved. However, as the image sensor (I) becomes larger, the corresponding optical system (400) may be difficult to mount on the slimmed-down electronic device (101). For example, the thickness of the electronic device may increase due to the length or width of the image sensor (I). Accordingly, according to one embodiment, the optical system (400) includes at least one optical member (M), thereby improving the design freedom regarding the implementation of the optical path to the image sensor (I) and securing a sufficient rear focal length and / or good telephoto performance. Accordingly, an optical system with high magnification (e.g., a telephoto camera) and / or a large-sized image sensor (I) can be easily mounted in a confined space, such as a miniaturized and / or slimmed-down electronic device (101).

[0118] According to one embodiment, the shield (B) may include an opening through which light passes (e.g., the opening (B1) in FIG. 6, 7 and 8a). For example, among the light passing through the lens group (G) and the optical member (M), the central ray may pass through the opening (B1), and some of the peripheral rays may pass through the opening (B1) while other parts of the peripheral rays may be blocked by the shield (B). According to one embodiment, the aperture of the shield (B) (e.g., Bd in FIG. 9a) may be smaller than the effective aperture of the lens closest to the upper side among the lenses (L1, L2, L3) of the lens group (G) (e.g., the third lens (L3)). According to one embodiment, the maximum diameter of the opening (B1) of the shield (B) (e.g., Bd in FIG. 9a) may be formed to be smaller than the diameter of the aperture (sto). As the maximum diameter of the opening (B1) of the shield (B) (e.g., Bd in FIG. 9a) is set as above, the depth of focus of the periphery of the optical system (400) can be increased, the diffraction limit can be reduced, and the deterioration of optical performance due to rotation or tilt of the optical member (M) for image stabilization (OIS) can be reduced.

[0119] According to one embodiment, the aperture (sto) may be positioned facing the upper side of the lens closest to the upper side (e.g., the third lens (L3)) among the lenses (L1, L2, L3) of the lens group (G), or facing the upper side surface of the said lens (e.g., the upper side surface (S7) of the third lens (L3)). According to one embodiment, the aperture (sto) may define an area where light focused and guided by the lenses (L1, L2, L3) of the lens group (G) is incident on the optical member (M). According to one embodiment, the aperture (sto) may be positioned spaced apart from or on the upper side surface (S7) of the lens (L3) closest to the upper side among the lenses (L1, L2, L3) of the lens group (G). According to one embodiment, the aperture (sto) may be positioned between the lenses (L1, L2, L3) of the lens group (G) or between the subject (obj) and the first lens (L1).

[0120] According to one embodiment, the optical system (400) may further include an infrared blocking filter (F). According to one embodiment, the infrared blocking filter (F) may include a subject side surface (S13) and an image side surface (S14). For example, the ultraviolet blocking filter (F) may block light (e.g., infrared) in a wavelength band that is not visible to the user's naked eye but is detected by the film or image sensor (I). For example, in an optical system or electronic device (101) intended for detecting infrared, the infrared blocking filter (F) may be replaced with a pass filter that transmits infrared and blocks visible light. For example, the infrared blocking filter (F) may be aligned along the optical axis (O) with the lenses (L1, L2, L3), aperture (sto), shield (B), and / or image sensor (I) of the lens group (G).

[0121] The radius of curvature (or radius) of the lenses (L1, L2, L3) of the present disclosure, the thickness, the effective focal length (EFL), back focal length (BFL), total track length (TTL), or image height (IH) of the image sensor (I) of the optical system (300, 400, 500, 600, 700) may all have units of mm unless specifically noted. Additionally, the radius of curvature (or radius), effective focal length (EFL), TTL, SD, thickness, or image height (IH) of the lenses (L1, L2, L3) may be distances measured along the optical axis (O).

[0122] According to one embodiment, the optical system (300, 400, 500, 600, 700) according to the embodiments described below with reference to the embodiments of FIGS. 6 to 8b, FIGS. 9a to 9d, and FIGS. 10a to 12d can satisfy [Equation 1], [Equation 2], and [Equation 3] described below.

[0123] According to one embodiment, the optical system (300, 400, 500, 600, 700) can satisfy the following [Equation 1].

[0124] [Equation 1]

[0125] 0.6 < Bd / LSd < 0.8

[0126] Here, Bd in [Equation 1] is the maximum diameter of the opening of the shield (B), and LSd may be the effective diameter of the lens closest to the upper side among the lenses (L1, L2, L3) of the lens group (G) (e.g., the third lens (L3)).

[0127] According to one embodiment, if the value of Bd / LSd is greater than or equal to the upper limit of [Equation 1], the effect of blocking ambient light by the shield (B) may be reduced, and performance degradation may occur due to rotation or tilt operation of the optical member (M). If the value of Bd / LSd is less than or equal to the lower limit of [Equation 1], the F-number of the optical system (300, 400, 500, 600, 700) may increase, resulting in a dark optical system, and a decrease in the ambient light ratio may occur.

[0128] According to one embodiment, the optical system (300, 400, 500, 600, 700) can satisfy the following [Equation 2].

[0129] [Equation 2]

[0130] 2 < vd1 / vd2 < 3

[0131] Here, vd1 may be the Abbe number of the first lens (L1) at a wavelength of 587.6 nm, and vd2 may be the Abbe number of the second lens (L2) at a wavelength of 587.6 nm. According to one embodiment, if the value of vd1 / vd2 is greater than the upper limit of [Equation 2], the chromatic aberration correction performance deteriorates, making it difficult to secure the optical performance of the optical system (300, 400, 500, 600, 700).

[0132] According to one embodiment, the optical system (300, 400, 500, 600, 700) can satisfy the following [Equation 3].

[0133] [Equation 3]

[0134] TL1 / TL < 0.3

[0135] Here, TL1 is the distance from the subject side surface (S2) of the first lens (L1) to the subject side surface (S9) of the optical member (M), and TL may be the distance from the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (I).

[0136] [Equation 3] relates to the height of the lens protruding from the incident surface (S9) of the optical member (M), and if the value of TL1 / TL is greater than the upper limit of [Equation 3], a problem may occur in which the amount of protrusion of the optical system (300, 400, 500, 600, 700) increases when mounted on an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 3 and FIG. 4).

[0137] Table 1 below shows the numerical values ​​for [Equation 1] to [Equation 3] of optical systems (300, 400, 500, 600, 700) according to the embodiments described below with reference to the embodiments of FIGS. 6, 7, 8a and 8b, the embodiments of FIGS. 9a to 9d, and FIGS. 10a to 12d. Referring to Table 1, it can be seen that the numerical values ​​for [Equation 1] to [Equation 3] of optical systems (300, 400, 500, 600, 700) according to the embodiments of the present disclosure satisfy the numerical range of [Equation 1] to [Equation 3] described above.

[0138] Example 1 Example 2 Example 3 Example 4 Formula 1 Bd / LSd 0.76 10.68 40.71 10.680 Formula 2 Vd 1 / vd 2 2.15 7 2.38 2.74 7 2.157 Formula 3 TL 1 / TL 0.25 80.24 20.24 30.218

[0139] In one embodiment, the optical system (400) may be manufactured to satisfy the shapes of the lenses (L1, L2, L3) (e.g., lens surfaces) described above and the [Equation 1], [Equation 2], and [Equation 3] described above, and to have the specifications exemplified in the following [Table 2]. In [Table 2], lens surface 1 may exemplify the gap between the first lens (L1) and the object (obj), and the measured value of the thickness may be the distance of the gap or the air gap. The optical system (400) implemented with the specifications of the following [Table 2] may be an optical system having a combined focal length (EFL) of about 12.2 mm, an F-number (Fno) of about 3.4, a TL of about 12.27 mm, a TL1 of about 3.17 mm, and an image height (IH) of about 2.28 mm. Here, TL1 is the distance from the subject side surface (S2) of the first lens (L1) to the subject side surface (S9) of the optical member (M), and TL may be the distance from the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (I). Here, the image height (IH) may be the effective image height of the image sensor (I).

[0140] Lens Surface Radius Thickness H-Ape Refractive Index (Nd) Abbe Number (Vd) Object infinity infinity 1 infinity 0.00000 2.096 76 2*2.58 799 1.26 571 1.95 1.54 40 15 5.99 3*-35 7.10 50 40.11 53 41.74 171 4*12.55 179 0.36 44 21.6 30 91 1.61 44 22 5.96 5*1.51 596 0.21 09 21.28 70 26*1.73 28 0.47 92 81.28 51 51.63 91 52 3.5 27*3.0 22 91 0.53 13 21.20 9718(Aperture(sto))infinity0.200001.171019infinity1.550001.141271.7552027.5810infinity-1.550001.561141.7552027.5811infinity-1.000000.8815412(Shield(B))infinity-3.000000.9213infinity-0.210001.744411.5168064.214infinity-1.793601.78190imginfinity-0.000972.28334

[0141] [Table 3] below lists the aspherical coefficients of the lenses (L1, L2, L3), and the aspherical coefficients can be calculated through the following [Equation 1].

[0142]

[0143] Here, 'z' represents the distance from the vertex of the lens in the direction of the optical axis (O), 'r' represents the distance in the direction perpendicular to the optical axis (O), 'c' represents the reciprocal of the radius of curvature from the vertex of the lens, 'k' represents the conic constant, and 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', and 'J' represent the aspherical coefficients, respectively.

[0144] SurfaceS2S3S4S5S6S7Radius2.58799E+00-3.57105E+021.25518E+011.51596E+001.73028E+003.02291E+00K(Conic)- 1.77366E-01-1.12642E-015.78610E+00-2.17030E+00-1.19390E+00-2.53722E-01A(4th)2.85038E-032.66290E-02-9.70161E -031.14486E-022.03172E-022.65203E-02B(6th)-3.96090E-03-3.78437E-027.57685E-03-2.91468E-02-6.36217E-02-2.683 15E-02C(8th)1.16457E-034.88144E-021.40217E-028.91562E-029.29593E-021.55032E-02D(10th)2.02851E-03-3.90623E-0 2-2.73806E-02-1.25170E-01-9.28574E-023.98750E-03E(12th)-2.25927E-031.91477E-022.22482E-021.12386E-016.9567 0E-02-9.75541E-03F(14th)1.05637E-03-5.71759E-03-1.00509E-02-6.15274E-02-3.53495E-024.46756E-03G(16th)-2.651 54E-049.96518E-042.62676E-031.98719E-021.08218E-02-1.17867E-03H(18th)3.48271E-05-8.98927E-05-3.72757E-04-3. 48196E-03-1.77836E-033.13891E-04J(20th)-1.87628E-062.98631E-062.22784E-052.48854E-041.13712E-04-5.65490E-05

[0145] [Table 4] below may show data regarding the arrangement of the optical member (M) of the optical system (400) and the setting of the rotation or tilt operation of the optical member (M) for performing image shake correction.

[0146] Decenter & BendAlphareflect S1045 Global coordinatesYZAlpha S8Global reference surface S12-2.551.7590 Pitch OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS90.9001.55Yaw OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS9001.631.55

[0147] FIG. 9b is a graph showing the spherical aberration of an optical system (400) according to one embodiment of the present disclosure, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the optical axis (O) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 9c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (400) according to one embodiment of the present disclosure, where 'X' exemplifies a sagittal plane and 'Y' exemplifies a tangential plane or meridional plane. FIG. 9d is a graph showing distortion for light of wavelength 547.6000 (NM) of an optical system (400) according to one embodiment of the present disclosure. The description of the optical system (400) of the embodiment of FIG. 9a to 9d in the present disclosure may be similarly applied to the optical systems (400, 600, 700) described later with reference to FIG. 10a to 12d.

[0148] [Example 2]

[0149] FIG. 10a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 10b is a graph showing the spherical aberration of the optical system of FIG. 10a according to one embodiment of the present disclosure. FIG. 10c is a graph showing the astigmatism of the optical system of FIG. 10a according to one embodiment of the present disclosure. FIG. 10d is a graph showing the distortion rate of the optical system of FIG. 10a according to one embodiment of the present disclosure.

[0150] In one embodiment, the optical system (500) may be manufactured to satisfy the shapes of the lenses (L1, L2, L3) (e.g., lens surfaces) described above and the [Equation 1], [Equation 2], and [Equation 3] described above, and to have the specifications exemplified in the following [Table 5]. In [Table 5], lens surface 1 may exemplify a gap between the first lens (L1) and an object (obj), and the measured value of its thickness may be the distance of the gap or the air gap.

[0151] The optical system (500) implemented according to the specifications of [Table 5] below may be an optical system having a combined focal length (EFL) of approximately 13.15 mm, an F-number (Fno) of approximately 3.27, a TL of approximately 13.08 mm, a TL1 of approximately 3.16 mm, and an image height (IH) of approximately 2.5 mm. Here, TL1 is the distance from the subject side surface (S2) of the first lens (L1) to the subject side surface (S9) of the optical member (M), and TL may be the distance from the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (I). Here, the image height (IH) may be the effective image height of the image sensor (I).

[0152] Lens Surface Radius Thickness H-Ape Refractive Index (Nd) Abbe Number (Vd) Object infinity infinity 1 infinity 0.00000 2.17066 2 * 2.62880 1.29433 2.02000 1.54401 55.993 * 18.96433 0.02230 1.82299 4 * 7.38024 0.33489 1.77198 1.6391 523.525 * 1.5393 10.19197 1.47297 6 * 1.66614 0.49775 1.46997 1.650352 1.537 * 2.81436 0.62045 1.37836 8(Aperture(sto))infinity0.200001.34410 9infinity1.600001.313111.7552027.5810infinity-1.600001.81823-1.7552027.5811infinity-1.000001.03390 12(Shield(B))infinity-4.000000.95000 13infinity-0.110002.04070-1.5168064.214infinity-1.627882.06006 imginfinity0.014672.50181

[0153] [Table 6] below shows the aspherical coefficients of the lenses (L1, L2, L3).

[0154] SurfaceS2S3S4S5S6S7Radius2.62880E+001.89643E+017.38024E+001.53931E+001.66614E+002.81436E+00K(Conic)-2 .04051E-01-1.85830E+012.26771E+00-2.29226E+00-1.23988E+00-4.04474E-01A(4th)2.67293E-032.59965E-02-1.01202E- 021.13388E-021.95584E-022.69029E-02B(6th)-3.87016E-03-3.81092E-027.35903E-03-3.00741E-02-6.33741E-02-2.594 69E-02C(8th)1.12309E-034.88086E-021.40108E-028.82778E-029.33287E-021.58718E-02D(10th)2.02119E-03-3.90520E-0 2-2.73898E-02-1.25400E-01-9.30846E-024.00745E-03E(12th)-2.25813E-031.91489E-022.22459E-021.12468E-016.9600 5E-02-9.47037E-03F(14th)1.05714E-03-5.71721E-03-1.00480E-02-6.15662E-02-3.52722E-024.39240E-03G(16th)-2.651 14E-049.96303E-042.62676E-031.98905E-021.08165E-02-1.15108E-03H(18th)3.47925E-05-8.98304E-05-3.72804E-04-3. 47956E-03-1.76949E-033.20810E-04J(20th)-1.87722E-062.94684E-062.22149E-052.52857E-041.19185E-04-5.14170E-05

[0155] [Table 7] below may show data regarding the arrangement of the optical member (M) of the optical system (500) and the setting of the rotation or tilt operation of the optical member (M) for performing image shake correction.

[0156] Decenter & BendAlphareflectS1045Global coordinatesYZAlphaS8Global reference surfaceS12-2.61.890Pitch OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS90.87001.6Yaw OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS9001.61.6

[0157] FIG. 10b is a graph showing the spherical aberration of an optical system (500) according to one embodiment of the present disclosure, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the optical axis (O) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 10c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (500) according to one embodiment of the present disclosure, where 'X' exemplifies a sagittal plane and 'Y' exemplifies a tangential plane or meridional plane. FIG. 10d is a graph showing distortion for light of wavelength 547.6000 (NM) of an optical system (500) according to one embodiment of the present disclosure.

[0158] [Example 3]

[0159] FIG. 11a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 11b is a graph showing the spherical aberration of the optical system of FIG. 11a according to one embodiment of the present disclosure. FIG. 11c is a graph showing the astigmatism of the optical system of FIG. 11a according to one embodiment of the present disclosure. FIG. 11d is a graph showing the distortion rate of the optical system of FIG. 11a according to one embodiment of the present disclosure.

[0160] In one embodiment, the optical system (600) may be manufactured to satisfy the shapes of the lenses (L1, L2, L3) (e.g., lens surfaces) described above and the [Equation 1], [Equation 2], and [Equation 3] described above, and to have the specifications exemplified in the following [Table 8]. In [Table 8], lens surface 1 may exemplify a gap between the first lens (L1) and an object (obj), and the measured value of its thickness may be the distance of the gap or the air gap.

[0161] The optical system (600) implemented according to the specifications of [Table 8] below may be an optical system having a combined focal length (EFL) of approximately 13.15 mm, an F-number (Fno) of approximately 3.35, a TL of approximately 13.05 mm, a TL1 of approximately 3.167 mm, and an image height (IH) of approximately 2.5 mm. Here, TL1 is the distance from the subject side surface (S2) of the first lens (L1) to the subject side surface (S9) of the optical member (M), and TL may be the distance from the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (I). Here, the image height (IH) may be the effective image height of the image sensor (I).

[0162] Lens Surface Radius Thickness H-Ape Refractive Index (Nd) Abbe Number (Vd) Object infinity infinity 1 infinity 0.00000 2.11277 2 * 2.76696 1.09557 1.97500 1.544015 5.993 * 13.37278 0.13902 1.81262 4 * 5.50516 0.33290 1.72882 1.660742 0.385 * 1.53343 0.15733 1.46585 6 * 1.66235 0.63299 1.46790 1.6707419.247 * 2.78760 0.60914 1.33616 8(aperture(sto))infinity0.200001.30275 9infinity1.600001.272531.7282428.3210infinity-1.600001.755811.7282428.3211infinity-1.000000.99588 12(Blank(B))infinity-3.500000.95000 13infinity-0.210001.916711.5168064.214infinity-1.963141.95415 imginfinity-0.008682.50000

[0163] [Table 9] below shows the aspherical coefficients of the lenses (L1, L2, L3).

[0164] SurfaceS2S3S4S5S6S7Radius2.76696E+001.33728E+015.50516E+001.53343E+001.66235E+002.78760E+00K(Conic)-8 .03978E-02-3.38699E+00-2.74523E+00-2.37419E+00-1.20999E+00-3.72180E-02A(4th)2.84939E-032.64747E-02-1.07555E -029.24721E-031.89029E-022.86477E-02B(6th)-3.85708E-03-3.79235E-027.16531E-03-3.28385E-02-6.24555E-02-2.594 94E-02C(8th)1.15754E-034.86655E-021.40109E-028.88899E-029.27425E-021.57911E-02D(10th)2.03369E-03-3.89849E-0 2-2.74002E-02-1.25806E-01-9.29510E-024.17746E-03E(12th)-2.26313E-031.91227E-022.22341E-021.12562E-016.9213 5E-02-9.66303E-03F(14th)1.05508E-03-5.72601E-03-1.00327E-02-6.13136E-02-3.46099E-024.41868E-03G(16th)-2.638 30E-041.00260E-032.61828E-031.96585E-021.04572E-02-1.07595E-03H(18th)3.46165E-05-9.11135E-05-3.70976E-04-3. 39780E-03-1.67520E-033.01802E-04J(20th)-1.87710E-063.06432E-062.21596E-052.44748E-041.06892E-04-5.83998E-05

[0165] The following [Table 10] may show data regarding the arrangement of the optical member (M) of the optical system (600) and the setting of the rotation or tilt operation of the optical member (M) for performing image shake correction.

[0166] Decenter & BendAlphareflectS1045Global coordinatesYZAlphaS8Global reference surfaceS12-2.61.890Pitch OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS90.87001.6Yaw OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS9001.61.6

[0167] FIG. 11b is a graph showing the spherical aberration of an optical system (600) according to one embodiment of the present disclosure, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the optical axis (O) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 11c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (600) according to one embodiment of the present disclosure, where 'X' exemplifies a sagittal plane and 'Y' exemplifies a tangential plane or meridional plane. FIG. 11d is a graph showing distortion for light of wavelength 547.6000 (NM) of an optical system (600) according to one embodiment of the present disclosure.

[0168] [Example 4]

[0169] FIG. 12a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 12b is a graph showing the spherical aberration of the optical system of FIG. 12a according to one embodiment of the present disclosure. FIG. 12c is a graph showing the astigmatism of the optical system of FIG. 12a according to one embodiment of the present disclosure. FIG. 12d is a graph showing the distortion rate of the optical system of FIG. 12a according to one embodiment of the present disclosure.

[0170] In one embodiment, the optical system (700) may be manufactured to satisfy the shapes of the lenses (L1, L2, L3) (e.g., lens surfaces) described above and the [Equation 1], [Equation 2], and [Equation 3] described above, and to have the specifications exemplified in the following [Table 11]. In [Table 11], lens surface 1 may exemplify a gap between the first lens (L1) and an object (obj), and the measured value of its thickness may be the distance of the gap or the air gap.

[0171] The optical system (700) implemented according to the specifications of [Table 11] below may be an optical system having a combined focal length (EFL) of approximately 18.6 mm, an F-number (Fno) of approximately 3.161, a TL of approximately 18.96 mm, a TL1 of approximately 4.13 mm, and an image height (IH) of approximately 2.5 mm. Here, the TL1 is the distance from the subject side surface (S2) of the first lens (L1) to the subject side surface (S9) of the optical member (M), and the TL may be the distance from the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (I). Here, the image height (IH) may be the effective image height of the image sensor (I).

[0172] Lens Surface Radius Thickness H-Ape Refractive Index (Nd) Abbe Number (Vd) Object infinity infinity 1 infinity 0.00000 3.11625 2 * 3.7395 21.7135 7 2.96000 1.5440 155.993 * 30.06899 0.030 78 2.73985 4 * 11.8037 70.4300 92.65 164 1.6144 225.965 * 2.55896 0.282 152.22970 6 * 3.00226 0.467 102.2157 41.63915 23.527 * 4.812130.81200 2.13336 8(Aperture(sto))infinity0.400002.09491 9infinity2.440002.030891.7282428.3210infinity-2.440002.813851.7282428.3211infinity-1.000001.58439 12(Shield(B))infinity-6.800001.45000 13infinity-0.110002.242721.5168064.214infinity-2.023912.25154 imginfinity-0.012782.50315

[0173] [Table 12] below shows the aspherical coefficients of the lenses (L1, L2, L3).

[0174] SurfaceS2S3S4S5S6S7Radius3.73952E+003.00690E+011.18038E+012.55896E+003.00226E+004.81213E+00K(Conic)-1 .52435E-01-1.86545E+006.04033E+00-2.76381E+00-1.17800E+00-2.74097E-02A(4th)4.43392E-048.08529E-03-1.91672E- 033.45657E-035.06874E-038.66003E-03B(6th)-4.17928E-04-4.65627E-038.30544E-04-3.47161E-03-7.97015E-03-3.246 90E-03C(8th)5.63924E-052.54020E-037.26113E-044.53147E-034.90921E-037.63557E-04D(10th)4.50752E-05-8.77796E-0 4-6.13720E-04-2.81399E-03-2.08998E-031.07415E-04E(12th)-2.18399E-051.85200E-042.15032E-041.08844E-036.7150 2E-04-9.22146E-05F(14th)4.39539E-06-2.37858E-05-4.18055E-05-2.55521E-04-1.46797E-041.89180E-05G(16th)-4.742 14E-071.78224E-064.69780E-063.55085E-051.93701E-05-2.30389E-06H(18th)2.68105E-08-6.92735E-08-2.87026E-07-2. 68280E-06-1.35818E-062.27302E-07J(20th)-6.25597E-101.00506E-097.41963E-098.39409E-083.75051E-08-1.28041E-08

[0175] The following [Table 13] may show data regarding the arrangement of the optical member (M) of the optical system (700) and the setting of the rotation or tilt operation of the optical member (M) for performing image shake correction.

[0176] Decenter & BendAlphareflectS1045Global coordinatesYZAlphaS8Global reference surfaceS12-3.442.8490Pitch OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS90.824002.44Yaw OIS 1.0degree decenter dataBasicAlphaBetaGammaz-offsetS9001.512.44

[0177] FIG. 12b is a graph showing the spherical aberration of an optical system (700) according to one embodiment of the present disclosure, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the optical axis (O) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 12c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (700) according to one embodiment of the present disclosure, where 'X' exemplifies a sagittal plane and 'Y' exemplifies a tangential plane or meridional plane. FIG. 12d is a graph showing distortion for light of wavelength 547.6000 (NM) of an optical system (700) according to one embodiment of the present disclosure. Since the optical system for implementing a high-magnification telephoto camera has a long focal length, it may include an optical member to reduce the overall thickness or volume of the optical system. For example, the optical member may be placed between an object and a lens group, between a lens group and an image sensor, or between lenses. For example, in the case of a first structure in which the optical member is placed between an object and a lens group, a method of correcting image shaking caused by external impact by rotating the optical member may be applied. However, in the case of the first structure, a technique to implement an asymmetric lens by generally removing a portion of the effective diameter of the lens to secure the brightness of the optical system may be applied, and accordingly, the difficulty of manufacturing the lens increases and may become a factor causing a difference in horizontal resolution.For example, when an optical element is placed between lenses, image shake can be corrected by moving the image sensor or rotating the optical element. However, in this case, the lenses are separated into two or more groups, which increases the difficulty of manufacturing the optical system and may make it difficult to ensure the performance of the optical system (e.g., aberration control performance). For example, when an optical element is placed between a lens group and an image sensor, image shake can be corrected by moving the image sensor or moving the lens; in this case, the structure of the optical system becomes complex to implement the movement of the image sensor, which may increase the difficulty and cost of manufacturing.

[0178] According to one embodiment of the present disclosure, an optical system and an electronic device including the same may be provided, which include an optical member disposed between a lens group and an image sensor, and are configured to correct image shake caused by factors such as external impact through the rotation of the optical member, while ensuring high magnification (e.g., 3x or more) and high resolution. According to one embodiment of the present disclosure, an optical system may be provided in which an aperture and / or a shield is disposed between the optical member and the image sensor. The shield is formed to have an aperture smaller than the aperture of the image side surface of the lens closest to the optical member to realize a bright optical system, and by blocking ambient light to improve the ambient light ratio and reduce the diffraction limit, the degradation of optical performance during the rotation of the optical member for image shake may be reduced. According to one embodiment of the present disclosure, the shield may be configured as an integral or separate type with respect to a case housing the optical system, and in the case of a separate type, a process of etching a through hole in the center of the shield may be easy. According to one embodiment of the present disclosure, a structure may be provided at the top of the shield to prevent flare generated by reflection from the upper wall of a case housing an optical system.

[0179] According to one embodiment of the present disclosure, an electronic device (101) may be provided. The electronic device may include an optical system (300, 400, 500, 600, 700, optical system). The above optical system may include a lens group (G) comprising lenses arranged along an optical axis (O) in a direction from the object side to the image side, a first lens (L1) having a positive refractive power and having an object side surface (S2) that is closest to the object side and is convex toward the object side among the lenses, and a second lens (L2) having a negative refractive power and having a negative refractive power and being second closest to the object side among the lenses and formed concave toward the image side, an image sensor (I) having an image plane (img) where an image is formed, an optical member (M) disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group, an aperture (sto), and a shield (B, 24) disposed between the optical member and the image sensor, the shield including an opening (B1) through which light passes. The above optical system can satisfy the following [Equation 1].

[0180] [Equation 1]

[0181] 0.6 < Bd / LSd < 0.8

[0182] (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

[0183] According to one embodiment, the optical system can satisfy the following [Equation 2].

[0184] [Equation 2]

[0185] 2 < vd1 / vd2 < 3

[0186] (The above vd1 is the Abbe number of the first lens at a wavelength of 587.6 nm, and vd2 is the Abbe number of the second lens at a wavelength of 587.6 nm).

[0187] According to one embodiment, the optical system can satisfy the following [Equation 3].

[0188] [Equation 3]

[0189] TL1 / TL < 0.3

[0190] (The above TL1 is the distance from the subject side of the first lens to the subject side of the optical member, and the above TL is the distance from the subject side of the first lens to the imaging plane of the image sensor).

[0191] According to one embodiment, the shield may include a first part (Ba) and a second part (Bb) which is detachably configured to the first part and configured to form or define the opening together with the first part.

[0192] According to one embodiment, the shield may include a flare prevention structure (S1) comprising a third part (Bw) disposed at the outermost end of the second part and a plurality of protrusions formed on one surface of the third part.

[0193] According to one embodiment, the system may further include a case (20) formed to accommodate the optical system, and the case may include a second flare prevention structure (S2) comprising a plurality of protrusions configured to reflect a portion of the light passing through the shield.

[0194] According to one embodiment, the number of lenses may be three.

[0195] According to one embodiment, the lenses may include a synthetic resin.

[0196] According to one embodiment, the lens group may include a third lens (L3) that is positioned closest to the image sensor among the lenses and has a defined refractive power.

[0197] According to one embodiment, the imaging plane of the image sensor may be positioned at an angle with respect to a first direction in which the lenses are arranged.

[0198] According to one embodiment, the optical member may be configured to perform optical image stabilization by rotating or tilting the optical member around a first direction in which the lenses are aligned and a second direction intersecting the first direction.

[0199] According to one embodiment, the optical member may include a prism configured to reflect the path of light passing through the lens group once and transmit it toward the shield and the image sensor.

[0200] According to one embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, optical system) may be provided. The above optical system comprises a lens group (G) including lenses arranged along an optical axis (O) in a direction from the object side toward the image side, wherein the lens group includes a first lens (L1) which is closest to the object side and has a positive refractive power and has an object side surface (S2) that is convex toward the object side, and a second lens (L2) which is second closest to the object side, is formed concave toward the image side, and has a negative refractive power; an image sensor (I) comprising an image plane (img) formed at an angle with respect to a first direction in which the lenses are arranged and an image is formed; an optical member (M) disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group; an aperture (sto); and a shield (B, 24) disposed between the optical member and the image sensor, wherein light passes through It may include a shield including an opening (B1). The optical system may satisfy the following [Equation 1].

[0201] [Equation 1]

[0202] 0.6 < Bd / LSd < 0.8

[0203] (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

[0204] According to one embodiment, the optical system can satisfy the following [Equation 2].

[0205] [Equation 2]

[0206] 2 < vd1 / vd2 < 3

[0207] (The above vd1 is the Abbe number of the first lens at a wavelength of 587.6 nm, and vd2 is the Abbe number of the second lens at a wavelength of 587.6 nm).

[0208] According to one embodiment, the optical system can satisfy the following [Equation 3].

[0209] [Equation 3]

[0210] TL1 / TL < 0.3

[0211] (The above TL1 is the distance from the subject side of the first lens to the subject side of the optical member, and the above TL is the distance from the subject side of the first lens to the imaging plane of the image sensor).

[0212] According to one embodiment, the shield may include a first part (Ba) and a second part (Bb) which is detachably configured to the first part and configured to form or define the opening together with the first part.

[0213] According to one embodiment, the shield may include a flare prevention structure (S1) comprising a third part (Bw) disposed at the outermost end of the second part and a plurality of protrusions formed on one surface of the third part.

[0214] According to one embodiment, the number of lenses may be three. The lenses may include a synthetic resin.

[0215] According to one embodiment, the optical member may be configured to perform optical image stabilization by rotating or tilting the optical member around a first direction in which the lenses are aligned and a second direction intersecting the first direction.

[0216] According to one embodiment, the optical member may include a prism configured to reflect the path of light passing through the lens group once and transmit it toward the shield and the image sensor.

[0217] One embodiment of the present disclosure should be understood as an example rather than limiting the invention. It will be obvious to those skilled in the art that various changes in form and detailed configuration may be made without departing from the whole context of the present disclosure, including the appended claims and their equivalents.

[0218] An electronic device according to one embodiment of the present disclosure may be of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the aforementioned devices.

[0219] The embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to a specific embodiment, and should be understood to include various modifications, equivalents, or substitutions of said embodiment. 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 said items unless the relevant context clearly indicates otherwise. In this disclosure, phrases such as "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" may each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0220] As used in one embodiment of this document, the term “module” 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, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof 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).

[0221] One embodiment of the present document may be implemented as software (e.g., program (140)) comprising one or more instructions stored in a storage medium (e.g., internal memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to be operated 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 that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0222] According to one embodiment, a method according to one embodiment of the present disclosure may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or an application store (e.g., a Flare Store). TM It can be distributed online (e.g., downloaded or uploaded) through ) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0223] According to one embodiment, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to one embodiment, one or more of the components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to one embodiment, operations performed by the module, program, or other components 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.

Claims

1. In an electronic device (101) including an optical system (300, 400, 500, 600, 700, optical system), The above optical system is, A lens group (G) comprising lenses arranged along an optical axis (O) in a direction from the object side toward the image side, wherein the lens group comprises a first lens (L1) having a positive refractive power and having an object side surface (S2) that is closest to the object side and is convex toward the object side, and a second lens (L2) having a negative refractive power and having a negative refractive power, which is second closest to the object side and is formed concave toward the image side; An image sensor (I) including an image plane (img) where an image is formed; An optical member (M) disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group; Aperture (sto); and A shield (B, 24) disposed between the optical member and the image sensor, comprising a shield including an opening (B1) through which light passes. The above optical system is an electronic device satisfying the following [Equation 1]. [Equation 1] 0.6 < Bd / LSd < 0.8 (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

2. In Paragraph 1, The above optical system is an electronic device satisfying the following [Equation 2]. [Equation 2] 2 < vd1 / vd2 < 3 (The above vd1 is the Abbe number of the first lens at a wavelength of 587.6 nm, and vd2 is the Abbe number of the second lens at a wavelength of 587.6 nm).

3. In Paragraph 1 or 2, The above optical system is an electronic device satisfying the following [Equation 3]. [Equation 3] TL1 / TL < 0.3 (The above TL1 is the distance from the subject side of the first lens to the subject side of the optical member, and the above TL is the distance from the subject side of the first lens to the imaging plane of the image sensor).

4. In any one of paragraphs 1 to 3, An electronic device comprising a first part (Ba) and a second part (Bb) which is detachably configured to the first part and configured to form or define the opening together with the first part.

5. In Paragraph 4, The above shielding is an electronic device comprising a flare prevention structure (S1) including a third part (Bw) disposed at the outermost end of the second part and a plurality of protrusions formed on one surface of the third part.

6. In either Paragraph 4 or Paragraph 5, An electronic device further comprising a case (20) formed to accommodate the above optical system, wherein the case comprises a second flare prevention structure (S2) comprising a plurality of protrusions configured to reflect a portion of the light passing through the shield.

7. In any one of paragraphs 1 through 6, The imaging plane of the above image sensor is arranged at an angle with respect to a first direction in which the lenses are arranged, in an electronic device.

8. In any one of paragraphs 1 through 7, An electronic device configured to perform optical image stabilization by rotating or tilting the optical member around a first direction in which the lenses are aligned and a second direction intersecting the first direction.

9. In any one of paragraphs 1 through 8, The above optical member is an electronic device comprising a prism configured to reflect the path of light passing through the lens group once and transmit it toward the shield and the image sensor.

10. In an optical system (300, 400, 500, 600, 700, optical system), A lens group (G) comprising lenses arranged along an optical axis (O) in a direction from the object side toward the image side, wherein the lens group comprises a first lens (L1) having a positive refractive power and having an object side surface (S2) that is closest to the object side and is convex toward the object side, and a second lens (L2) having a negative refractive power and having a negative refractive power, which is second closest to the object side and is formed concave toward the image side; An image sensor (I) comprising an image plane (img) formed at an angle with respect to a first direction in which the lenses are arranged, and an image is formed; An optical member (M) disposed between the lens group and the image sensor and configured to change the path of light passing through the lens group; Aperture (sto); and A shield (B, 24) disposed between the optical member and the image sensor, comprising a shield including an opening (B1) through which light passes. The above optical system is an optical system satisfying the following [Equation 1]. [Equation 1] 0.6 < Bd / LSd < 0.8 (Bd is the maximum diameter of the opening of the shield, and LSd is the effective diameter of the lens closest to the upper side among the lenses of the lens group).

11. In Paragraph 10, The above optical system is an optical system satisfying the following [Equation 2] [Equation 2] 2 < vd1 / vd2 < 3 (The above vd1 is the Abbe number of the first lens at a wavelength of 587.6 nm, and vd2 is the Abbe number of the second lens at a wavelength of 587.6 nm).

12. In Article 10 or Article 11, The above optical system is an optical system satisfying the following [Equation 3] [Equation 3] TL1 / TL < 0.3 (The above TL1 is the distance from the subject side of the first lens to the subject side of the optical member, and the above TL is the distance from the subject side of the first lens to the imaging plane of the image sensor).

13. In Paragraph 12, An optical system in which the number of the above lenses is three, and the lenses comprise a synthetic resin.

14. In Paragraph 12 or 13, An optical system configured to perform optical image stabilization by rotating or tilting the optical member around a first direction in which the lenses are aligned and a second direction intersecting the first direction.

15. In any one of paragraphs 10 through 14, The optical member comprises an optical system including a prism configured to reflect the path of light passing through the lens group once and transmit it toward the shield and the image sensor.

Images