Optical system and electronic device including same

Abstract

According to one embodiment disclosed herein, an electronic device may be provided. The electronic device may comprise an optical system. The optical system may comprise: a lens group including a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having refractive power and having at least one of an object-side surface and an image-side surface formed to include at least one inflection point, and a fifth lens having negative refractive power and having at least one of an object-side surface and an image-side surface formed to include at least one inflection point, the lenses being sequentially arranged along an optical axis from the object side toward the image side; and an image sensor including an image-forming surface on which an image is formed.

Description

Optical system and electronic device including the same

[0001] The examples disclosed in this 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 a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having refractive power and formed such that at least one of the subject side or image side surface includes at least one inflection point, and a fifth lens having negative refractive power and formed such that both the subject side surface and the image side surface include at least one inflection point, and an image sensor comprising an image plane on which an image is formed.

[0006] The above optical system is an electronic device satisfying the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5].

[0007] [Equation 1]

[0008] TTL / IH < 0.68

[0009] [Equation 2]

[0010] Thi_L1 / (Thi_Lmax) > 1.3

[0011] [Equation 3]

[0012] Thi_L1 / (Thi_Lmin) > 3.0

[0013] [Equation 4]

[0014] Thi_L1 / SD > 0.22

[0015] [Equation 5]

[0016] 0.85 ≤ L1_ED / L2_ED ≤ 1.25

[0017] (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens)

[0018] According to one embodiment of the present disclosure, an optical system may be provided. The optical system may include a lens group comprising a first lens having positive refractive power, a second lens having negative refractive power, a third lens having negative refractive power, a fourth lens having refractive power and formed such that at least one of the subject side or image side surface includes at least one inflection point, and a fifth lens having negative refractive power and formed such that both the subject side surface and the image side surface include at least one inflection point, and an image sensor comprising an image plane on which an image is formed.

[0019] The above optical system is an electronic device satisfying the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5].

[0020] [Equation 1]

[0021] TTL / IH < 0.68

[0022] [Equation 2]

[0023] Thi_L1 / (Thi_Lmax) > 1.3

[0024] [Equation 3]

[0025] Thi_L1 / (Thi_Lmin) > 3.0

[0026] [Equation 4]

[0027] Thi_L1 / SD > 0.22

[0028] [Equation 5]

[0029] 0.85 ≤ L1_ED / L2_ED ≤ 1.25

[0030] (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens)

[0031] The aspects, configurations, and / or advantages described above regarding one embodiment of the present disclosure may become more apparent from the following detailed description with reference to the accompanying drawings.

[0032] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment of the present disclosure.

[0033] FIG. 2 is a block diagram illustrating a camera module according to one embodiment of the present disclosure.

[0034] FIG. 3 is a front perspective view of an electronic device according to one embodiment of the present disclosure.

[0035] FIG. 4 is a rear perspective view of an electronic device according to one embodiment of the present disclosure.

[0036] FIG. 5 is a cross-sectional view showing a part of an optical system and a part of a lens barrel according to one embodiment of the present disclosure.

[0037] FIG. 6a is a configuration diagram showing a lens according to one embodiment of the present disclosure.

[0038] FIG. 6b is a graph showing the spherical aberration of the optical system of FIG. 6a according to one embodiment disclosed in the present disclosure.

[0039] FIG. 6c is a graph showing the astigmatism of the optical system of FIG. 6a according to one embodiment disclosed in the present disclosure.

[0040] FIG. 6d is a graph showing the distortion rate of the optical system of FIG. 6a according to one embodiment disclosed in the present disclosure.

[0041] FIG. 7a is a configuration diagram showing a lens according to one embodiment of the present disclosure.

[0042] FIG. 7b is a graph showing the spherical aberration of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure.

[0043] FIG. 7c is a graph showing the astigmatism of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure.

[0044] FIG. 7d is a graph showing the distortion rate of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure.

[0045] FIG. 8a is a schematic diagram showing an optical system according to one embodiment of the present disclosure.

[0046] FIG. 8b is a graph showing the spherical aberration of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure.

[0047] FIG. 8c is a graph showing the astigmatism of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure.

[0048] FIG. 8d is a graph showing the distortion rate of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure.

[0049] FIG. 9a is a configuration diagram showing an optical system according to one embodiment of the present disclosure.

[0050] FIG. 9b is a graph showing the spherical aberration of the optical system of FIG. 9a according to one embodiment disclosed in the present disclosure.

[0051] FIG. 9c is a graph showing the astigmatism of the optical system of FIG. 9a according to one embodiment disclosed in the present disclosure.

[0052] FIG. 9d is a graph showing the distortion rate of the optical system of FIG. 9a according to one embodiment disclosed in the present disclosure.

[0053] FIG. 10a is a schematic diagram showing an optical system according to one embodiment of the present disclosure.

[0054] FIG. 10b is a graph showing the spherical aberration of the optical system of FIG. 10a according to one embodiment disclosed in the present disclosure.

[0055] FIG. 10c is a graph showing the astigmatism of the optical system of FIG. 10a according to one embodiment disclosed in the present disclosure.

[0056] FIG. 10d is a graph showing the distortion rate of the optical system of FIG. 10a according to one embodiment disclosed in the present disclosure.

[0057] FIG. 11a is a schematic diagram showing an optical system according to one embodiment of the present disclosure.

[0058] FIG. 11b is a graph showing the spherical aberration of the optical system of FIG. 11a according to one embodiment disclosed in the present disclosure.

[0059] FIG. 11c is a graph showing the astigmatism of the optical system of FIG. 11a according to one embodiment disclosed in the present disclosure.

[0060] FIG. 11d is a graph showing the distortion rate of the optical system of FIG. 11a according to one embodiment disclosed in the present disclosure.

[0061] FIG. 12a is a configuration diagram showing an optical system according to one embodiment of the present disclosure.

[0062] FIG. 12b is a graph showing the spherical aberration of the optical system of FIG. 12a according to one embodiment disclosed in the present disclosure.

[0063] FIG. 12c is a graph showing the astigmatism of the optical system of FIG. 12a according to one embodiment disclosed in the present disclosure.

[0064] FIG. 12d is a graph showing the distortion rate of the optical system of FIG. 12a according to one embodiment disclosed in the present disclosure.

[0065] Throughout the attached drawings, similar parts, configurations, and / or structures may be assigned similar reference numbers.

[0066] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to one embodiment disclosed in 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)).

[0067] 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.

[0068] 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.

[0069] 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).

[0070] 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).

[0071] 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).

[0072] 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.

[0073] 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.

[0074] 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).

[0075] 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.

[0076] 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.

[0077] 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).

[0078] 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.

[0079] 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.

[0080] 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).

[0081] 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.

[0082] 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).

[0083] 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.

[0084] 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).

[0085] 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.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] The image stabilizer (240) may 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 (201) 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) may 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) may 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 a 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.

[0091] 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 undergoing additional image processing by the processor (120).

[0092] 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.

[0093] FIG. 3 is a front perspective view of an electronic device according to one embodiment disclosed in the present disclosure. FIG. 4 is a rear perspective view of an electronic device according to one embodiment disclosed in the present disclosure.

[0094] 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.

[0095] 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) of FIG. 3, and the side (210C). According to one embodiment, the first surface (210A) may be formed by a front plate (202) (e.g., a glass plate or a polymer plate having various coating layers) in which at least a portion is substantially transparent. The second surface (210B) may be formed by a rear plate (211) that is substantially opaque. The rear plate (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 plate (202) and the rear plate (211). In one embodiment, the rear plate (211) and the side structure (218) may be formed integrally and may comprise the same material (e.g., a metallic material such as aluminum).

[0096] Although not illustrated, the front plate (202) may include region(s) that are curved and seamlessly extended toward the rear plate (211) at least a portion of the edge. In one embodiment, the front plate (202) (or the rear plate (211)) may include only one of the regions that are curved and extended toward the rear plate (211) (or the front plate (202)) at one edge of the first surface (210A). According to the embodiment, the front plate (202) or the rear plate (211) may be substantially flat, 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.

[0097] 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.

[0098] According to one embodiment, the display (201) may be visually exposed, for example, through a significant portion of the front plate (202). In one embodiment, at least a portion of the display (201) may be visually exposed through the front plate (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 plate (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 plate (202) may be formed to be generally identical.

[0099] 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 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).

[0100] 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).

[0101] 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.

[0102] 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), including some camera modules (205) and / or some sensor modules (e.g., sensor module (204)), may be positioned so as 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 positioned inside a hole or recess formed on the back surface of the display (201). For example, the first camera module (205) can 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 positioned 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 plate (202) of the display (201). Additionally, some sensor modules (204) may be positioned in the internal space of the electronic device so as to perform their functions without being visually exposed through the front plate (202).

[0103] 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. 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.

[0104] 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).

[0105] 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.

[0106] 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).

[0107] 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.

[0108] 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.

[0109] [Example 1]

[0110] FIG. 5 is a cross-sectional view showing a part of an optical system and a part of a lens barrel according to an embodiment of the present disclosure. FIG. 6a is a configuration diagram showing a lens according to an embodiment of the present disclosure. FIG. 6b is a graph showing the spherical aberration of the optical system of FIG. 6a according to an embodiment disclosed in the present disclosure. FIG. 6c is a graph showing the astigmatism of the optical system of FIG. 6a according to an embodiment disclosed in the present disclosure. FIG. 6d is a graph showing the distortion rate of the optical system of FIG. 6a according to an embodiment disclosed in the present disclosure.

[0111] Referring to FIGS. 5 through 6d, in one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1, FIG. 3 and FIG. 4) may include an optical system (300). An optical system according to one embodiment of the present disclosure (e.g., the optical system (300) of FIG. 6a, the optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, the optical system (700) of FIG. 10a, the optical system (800) of FIG. 11a, the optical system (900) of FIG. 12a) 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, an electronic device (101) to which an optical system (300, 400, 500, 600, 700, 800, 900) according to one embodiment of the present disclosure is applied may include various electronic devices including a camera module (e.g., tablet PC, drone), and 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).

[0112] Referring to FIG. 5, an optical system (300) according to one embodiment of the present disclosure may be positioned to receive light from outside the electronic device (101) through a receiving portion (or camera exposure area) of a display of the electronic device (101) (e.g., the display module (160) of FIG. 1 and the display (201) of FIG. 3 and FIG. 4). Here, the camera exposure area may be a through hole (e.g., a punch-hole or a perforated hole) formed in a part of the display (201). For example, the receiving portion may include a through hole or recess formed in at least a part of a plurality of layers (e.g., a cover window, a display panel and / or a support panel) constituting the display (201). In one embodiment, the receiving portion of the display (201) may be positioned in an active area (or screen area) of the display (201) where an image is displayed, or in an inactive area of ​​the display (201) that is positioned around the active area and where an image is not displayed.

[0113] In one embodiment, the electronic device (101) may include a front camera (e.g., the camera module (290) of FIG. 2 and / or the first camera module (205) of FIG. 3). According to one embodiment, an optical system (300) may be included in the front camera of the electronic device (101) (e.g., the first camera module (205) of FIG. 3). According to one embodiment, the front camera (e.g., the first camera module (205) of FIG. 3) containing the optical system (300) may be a camera (e.g., under display camera (UDC), hole in display (HID)) positioned below (or behind) the display (201). In one embodiment, the electronic device (101) may include a rear camera (e.g., the camera module (290) of FIG. 2 and / or the second camera module (212) of FIG. 4). According to one embodiment, the optical system (300) may be included in the rear camera of the electronic device (101) (e.g., the second camera module (212) of FIG. 4). The description above regarding the optical system (300) of FIG. 6a may be applied in the same or similarly to the optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, the optical system (700) of FIG. 10a, the optical system (800) of FIG. 11a, and the optical system (900) of FIG. 12a.

[0114] For example, the optical system (e.g., the optical system (300) of FIG. 6a, the optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, the optical system (700) of FIG. 10a, the optical system (800) of FIG. 11a, the optical system (900) of FIG. 12a)) may be configured as an optical system in which the path of incident light reaching the image sensor (I) is formed as a straight line (e.g., a direct optical system), but this is not limited thereto, and may also be configured as a curved optical system in which the incident light is reflected / refracted at least once and reaches the image sensor (I) when a reflective member (e.g., a prism, a mirror) is included.

[0115] According to one embodiment, the optical system (300) may include a lens barrel (10), a lens group (G) comprising a plurality (e.g., at least 5) of lenses (L1, L2, L3, L4, L5), an aperture (sto), and / or an image sensor (I). According to one embodiment, the lenses (L1, L2, L3, L4, L5) of the lens group (G), the aperture (sto), and / or the image sensor (I) may be substantially aligned on an optical axis (OI).

[0116] In one embodiment, the phrases “arranged on an optical axis (OI) extending from the object side (or external object, obj) to the image side (image side)” or “aligned along the optical axis (OI)” may refer to lenses (L1, L2, L3, L4, L5) being arranged sequentially from the object side toward the image sensor (I). In the embodiments described below, the ordinal numbers “first,” “second,” “third,” “fourth,” and “fifth” assigned to the lenses (L1, L2, L3, L4, L5) 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 subject side" or the "lens positioned furthest from the image sensor (I)," and the fifth lens (L5) may be referred to as the "first lens on the image sensor (I) side" or the "lens positioned closest to the image sensor (I)." In one embodiment, the image sensor (I) (e.g., the imaging plane (img)) may be aligned facing the lenses (L1, L2, L3, L4, L5) on the optical axis (OI). The imaging plane (img) may receive or detect light aligned or focused by the lenses (L1, L2, L3, L4, L5), for example.

[0117] According to one embodiment, the electronic device (101) (or optical system (300)) may further include a lens barrel (10) disposed within the electronic device (101). According to one embodiment, the lens barrel (10) may be formed to receive and support lenses (L1, L2, L3, L4, L5) inside. According to one embodiment, the lens barrel (10) may be configured to support an edge region of the subject side surface (S3) of the first lens (L1). For example, the opening (10a) of the lens barrel (10) may be a lens hole disposed to be aligned with or overlapping with the through hole of the display (201) and one axis (e.g., optical axis (OI)). For example, the lens barrel (10) may include an opening (10a). For example, the opening (10a) may be aligned with the first lens (L1) and the optical axis (OI). For example, the subject side surface (S3) of the first lens (L1) may be exposed to the outside of the lens barrel (10) toward the display (201) through the opening (10a). For example, the lens barrel (10) may include frames (11, 12, 13, 14) for holding or supporting the lenses (L1, L2, L3, L4, L5) in their designated positions (or design positions). For example, the frames (11, 12, 13, 14) may be formed to support the edges of the subject side surface and / or image side surface of the lenses on the inside of the lens barrel (10). The frames (11, 12, 13, 14) may be connected to the lens barrel (10) or formed integrally with the lens barrel (10). For example, some or all of the frames (11, 12, 13, 14) may be omitted.

[0118] According to one embodiment, the lenses (L1, L2, L3, L4, L5) of the lens group (G) of the optical system (300) may be arranged on an optical axis (OI) 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 (OI) passing through the centers of a plurality of lenses (L1, L2, L3, L4, L5) from the object side (or external object) to the image side. In describing the configuration of each lens (L1, L2, L3, L4, L5) below, for example, the object side may indicate the direction where the object (O) is located, and the image side may indicate the direction where the image plane (img) where the image is formed is located.

[0119] According to one embodiment, the lenses (L1, L2, L3, L4, L5) may each include a 'subject side surface' which is a surface facing the subject (O) and an 'image side surface' which is a surface facing the image (or image sensor (I)). For example, the first lens (L1) may include a subject side surface (S3) and an image side surface (S4). For example, the second lens (L2) may include a subject side surface (S5) and an image side surface (S6). For example, the third lens (L3) may include a subject side surface (S7) and an image side surface (S8). For example, the fourth lens (L4) may include a subject side surface (S9) and an image side surface (S10). For example, the fifth lens (L5) may include a subject side surface (S11) and an image side surface (S12). According to one embodiment, the lenses (L1, L2, L3, L4, L5) may be formed from a synthetic resin (e.g., plastic) material. However, the number and material of the lenses of the lens group (G) of the present disclosure are not limited, and, for example, may include four or fewer lenses or additional lenses. According to one embodiment, the lenses (L1, L2, L3, L4, L5) may be formed from a synthetic resin (e.g., plastic) or a glass material.

[0120] In the following detailed description, the terms "concave" or "convex" may be used to describe the shape of the subject side surface, which is the surface of the lenses (L1, L2, L3, L4, L5) facing the subject (O), and / or the image side surface, which is the surface facing the image sensor (I) or the imaging plane (img). Such descriptions of the shape of the lens surfaces may be descriptions of the shape of the point intersecting the optical axis (OI) or the shape of the "paraxial region" around the point intersecting the optical axis (OI). "The subject side surface is concave" may describe a shape in which the center of the radius of curvature of the subject side surface is located on the subject side. "The subject side surface is convex" 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 may 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 may be convex. In this case, regarding the concavity or convexity of the lens surface shape, a specific region of the lens surface may be specified.

[0121] According to one embodiment, at least some of the lenses (L1, L2, L3, L4, L5) 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, L4, L5) 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.

[0122] In one embodiment, the first lens (L1) may have positive refractive power as the lens closest to the subject side (or the first lens from the subject side). According to one embodiment, the subject side surface (S3) of the first lens (L1) may have a shape that is convex toward the subject side. For example, the shape of the subject side surface (S3) that is convex toward the subject side may be advantageous for controlling spherical aberration of the optical system (300). According to one embodiment, the subject side surface (S3) and / or image side surface (S4) of the first lens (L1) may be formed as an aspherical surface.

[0123] In one embodiment, the second lens (L2) is a second lens from the subject side and may have negative refractive power. According to one embodiment, the effective aperture of the second lens (L2) is similar to the effective aperture of the first lens (L1), which may be advantageous for implementing an optical system (e.g., a hole in display (HID)) placed below a display (e.g., the display (201) of FIG. 2 and FIG. 3). According to one embodiment, the subject side surface (S5) and / or image side surface (S6) of the second lens (L2) may be formed as an aspherical surface.

[0124] In one embodiment, the third lens (L3) is the third lens from the subject side and may have a negative refractive power. According to one embodiment, the subject side surface (S7) and / or image side surface (S8) of the third lens (L3) may be formed as an aspherical surface.

[0125] In one embodiment, the fourth lens (L4) is the fourth lens from the subject side and may have positive or negative refractive power. According to one embodiment, the subject side surface (S9) and / or image side surface (S10) of the fourth lens (L4) may have an inflection shape. In other words, the subject side surface (S9) and / or image side surface (S10) of the fourth lens (L4) may be formed as an aspherical surface including at least one inflection point. For example, by including at least one inflection point on the subject side surface (S9) and / or image side surface (S10) of the fourth lens (L4), the image plane curvature (or resolution curvature) from the paraxial region around the point where the subject side surface (S9) and / or image side surface (S10) intersects the optical axis (OI) to the peripheral region (or edge region) around the paraxial region can be reduced or corrected, and this contributes to minimizing the distance from the fifth lens (L5) to the image plane (img), which may be advantageous for slimming down the optical system (300).

[0126] In the present disclosure, an inflection point may refer to a point where the sign of curvature (or radius of curvature) changes in the edge region of the lens around the paraxial region of the lens. For example, the inflection point may be a point where the negative / positive of the radius of curvature of the paraxial region and the edge region is reversed. For example, the inflection point may be located at the boundary of a region where the center of the radius of curvature is located on the subject (O) side and a region where the center of the radius of curvature is located on the image sensor (I) side on a single lens plane.

[0127] In one embodiment, the fifth lens (L5) is the fifth lens from the subject side and may have negative refractive power. In one embodiment, the subject side surface (S11) and / or image side surface (S12) of the fifth lens (L5) may have an inflection shape. In other words, the subject side surface (S11) and / or image side surface (S12) of the fifth lens (L5) may be formed as an aspherical surface including at least one inflection point. For example, the fifth lens (L5) may be formed to be advantageous for reducing the effective aperture and slimming the optical system (300) as the lens closest to the image sensor (I). For example, by including at least one inflection point on the subject side surface (S11) and / or image side surface (S12) of the fifth lens (L5), the image plane curvature (or resolution curvature) from the paraxial region around the point where the subject side surface (S11) and / or image side surface (S12) intersect the optical axis (OI) to the peripheral region (or edge region) around the paraxial region can be reduced or corrected, and the distance from the fifth lens (L5) to the image plane (img) can be minimized, which is advantageous for slimming down the optical system (300).

[0128] In one embodiment, at least one of the lenses (L1, L2, L3, L4, L5) and / or the image sensor (I) may be configured to reciprocate along the optical axis (OI). 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 focus or adjust the focal length by reciprocating the lenses (L1, L2, L3, L4, L5) and / or the image sensor (I) along the optical axis (OI).

[0129] According to one embodiment, the aperture stop may be positioned around the subject side (S3) of the first lens (L1). For example, the aperture stop may be positioned facing at least a portion of the subject side (S3) of the first lens (L1). For example, if the aperture stop is positioned toward the subject (O) side (or forward) relative to the subject side (S3) of the first lens (L1), it may be advantageous for reducing the angle of view of the optical system (300) and minimizing the aperture, and may provide good wide-angle performance. For example, if the aperture (stop) is positioned toward the subject (O) side with respect to the subject side (S3) of the first lens (L1), the size of the receiving portion (e.g., through hole and / or recess) of the display (e.g., display module (160) of FIG. 1 and display (201) of FIG. 3 and FIG. 4) to which the first lens (L1) is exposed may be reduced compared to the case where the aperture (stop) is positioned toward the image sensor (I) side with respect to the subject side (S3) of the first lens (L1). The receiving portion may include a hole formed in the display (201) through which light incident from outside the electronic device (101) to the optical system (300) (or the front camera (e.g., camera module (290) of FIG. 2 and / or the first camera module (205) of FIG. 3) containing the optical system (300)) (e.g., UDC (under display camera), HID (hole in display)) passes.

[0130] For example, the aperture (stop) can be aligned with respect to the direction intersecting the apex of the subject side surface (S3) of the first lens (L1) and the optical axis (OI). Here, the apex of the subject side surface (S3) of the first lens (L1) may refer to the central part of the subject side surface (S3) of the first lens (L1), that is, the part closest to the subject side or the highest part of the subject side surface (S3). For example, the apex of the subject side surface (S3) of the first lens (L1) may be the point where the optical axis (OI) intersects the subject side surface (S3). For example, the aperture (stop) may be placed on a virtual plane that touches the apex of the subject side surface (S3). According to one embodiment of the present disclosure, the aperture (stop) is positioned around the subject side (S3) of the first lens (L1) so that the peripheral light ratio performance of the optical system (300) and a relatively wide angle of view (e.g., about 81 degrees or more) can be secured.

[0131] According to one embodiment, the image sensor (I) may include an imaging 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 (stop) and / or lenses (L1, L2, L3, L4, L5). According to one embodiment, the image sensor (I) is a sensor mounted on a circuit board or the like and arranged in a state aligned 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 into an electrical image signal. The image sensor (I) may acquire an image of a subject by detecting brightness information, grayscale ratio information, color information, etc., of the subject from light that has passed through a plurality of lenses.

[0132] According to one embodiment, the optical system (300) may further include a filter member (F). According to one embodiment, the filter member (F) may be positioned between the lens closest to the image sensor (I) among the lens group (e.g., the fifth lens (L5)) and the image sensor (I). According to one embodiment, the filter member (F) may include a subject side surface (S13) facing the subject (O) and an image side surface (S14) facing the image sensor (I). For example, the filter member (F) may be configured to block light in a wavelength band (e.g., infrared) that is not visible to the user's eyes but is detected by the film or image sensor (I). According to one embodiment, the filter member (F) may be an infrared blocking filter. In one embodiment, in an optical system or electronic device (101) for detecting infrared, the filter member (F) may be replaced with a pass filter that transmits infrared and blocks visible light. For example, the filter element (F) may be aligned with a plurality of lenses (L1, L2, L3, L4, L5) of a lens group and / or an image sensor (I) along the optical axis (OI). In one embodiment, the filter element (F) may be implemented by a coating material placed on the lens surface of any one of the lenses (L1, L2, L3, L4, L5).

[0133] Hereinafter, [Equation 1] to [Equation 12] are described for implementing the optical system (300) of FIG. 6a, the optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, the optical system (700) of FIG. 10a, the optical system (800) of FIG. 11a, and the optical system (900) of FIG. 12a into a bright wide-angle optical system with improved aberration performance, while ensuring sufficient thickness of the first lens (L1), in accordance with one embodiment, by miniaturizing and / or slimming the optical system (300) of FIG. 6a, the optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, and the optical system (900) of FIG. 12a, so as to be suitable for application to a hole in display (HID), and by miniaturizing and / or slimming the optical system so as to be suitable for application to a hole in display (HID), while ensuring sufficient thickness of the first lens (L1).

[0134] In the present disclosure, the radii (e.g., radius of curvature) of the lenses (L1, L2, L3, L4, L5), the effective focal length (f), the total track length (TTL), the surface distance (SD), the air gap, the thickness, or the image height (IH) of the image sensor (I) may all have units of mm unless specifically noted. Additionally, the radii of the lenses (L1, L2, L3, L4, L5) and the image height (IH) of the image sensor (I) may be measured in a direction substantially perpendicular from the point of intersection with the optical axis (OI), and the effective focal length, TTL, SD, the air gap, or the thickness may be measured in a direction parallel to the optical axis (OI) from the point of intersection with the optical axis (OI).

[0135] According to one embodiment, the optical system (300) described above in the embodiments of FIGS. 6 to 7d and the optical systems (400, 500, 600, 700, 800, 900) of the embodiments of FIGS. 6 and FIGS. 8a to 12d may satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described below, and may satisfy at least one of [Equation 6] to [Equation 12].

[0136] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 1].

[0137] [Equation 1]

[0138] TTL / IH < 0.68

[0139] Here, TTL (total track length) is the distance from the subject side surface (S3) of the first lens (L1) to the imaging plane (img) of the image sensor (IS), and IH is the effective diagonal length of the imaging plane (img).

[0140] [Equation 1] relates to a slim factor, which is the ratio of the thickness of the optical system to the size of the imaging plane (img), and is an equation for implementing a slim optical system. If the TTL / IH of [Equation 1] exceeds about 0.68, the optical system becomes larger, which may be disadvantageous for slimming the thickness of the electronic device (e.g., the electronic device (101) of FIGS. 1 to 3).

[0141] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 2].

[0142] [Equation 2]

[0143] 110Thi_L1 / (Thi_Lmax) > 1.3

[0144] Here, Thi_L1 is the center thickness of the first lens (L1), and Thi_Lmax is the center thickness of the lens with the thickest center thickness among the other lenses (L2, L3, L4, L5) excluding the first lens (L1). [Equation 2] is an equation regarding the condition of the center thickness of the first lens (L1). According to one embodiment, by satisfying [Equation 2] to secure the center thickness of the first lens (L1) to be at least 1.3 times the maximum value of the center thickness of the other lenses (L2, L3, L4, L5), it is possible to implement an optical system (e.g., HID (hole in display)) that is slim and optimized for placement under a display (e.g., the display (201) of FIG. 2 and FIG. 3) by satisfying [Equation 1].

[0145] In the present disclosure, the center thickness of the lens may be the length measured from the center of the subject side of the lens to the center of the image side.

[0146] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 3].

[0147] [Equation 3]

[0148] Thi_L1 / (Thi_Lmin) > 3.0

[0149] Here, Thi_Lmin is an equation regarding the condition of the center thickness of the lens with the thinnest center thickness among the other lenses (L2, L3, L4, L5) excluding the first lens (L1). According to one embodiment, by satisfying [Equation 3] to secure the center thickness of the first lens (L1) to be about 3.0 times greater than the minimum value of the center thickness of the other lenses (L2, L3, L4, L5), it is possible to implement an optical system (e.g., HID (hole in display)) that is slim and optimized for placement within or below a display (e.g., the display (201) of FIG. 2 and FIG. 3) by satisfying [Equation 1].

[0150] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 4].

[0151] [Equation 4]

[0152] Thi_L1 / SD > 0.22

[0153] Here, TTL (total track length) is the distance from the subject side surface (S3) of the first lens (L1) to the image plane (img) of the image sensor (IS), and SD (surface distance) is the distance from the peak of the subject side surface (S3) of the first lens (L1) to the peak of the image side surface of the lens furthest from the subject side among the lenses.

[0154] [Equation 4] is an equation regarding the condition of the center thickness of the first lens (L1). According to one embodiment, by satisfying [Equation 4], the center thickness of the first lens (L1) is secured to be at least about 0.22 times the distance from the vertex of the subject side surface (S3) of the first lens (L1) to the vertex of the image side surface of the lens furthest from the subject side among the lenses, thereby satisfying [Equation 1], it is possible to implement an optical system (e.g., HID (hole in display)) that is slim and optimized for placement within or below a display (e.g., the display (201) of FIG. 2 and FIG. 3).

[0155] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 5].

[0156] [Equation 5]

[0157] 0.85 ≤ L1_ED / L2_ED ≤ 1.25

[0158] Here, L1_ED is the effective diameter of the first lens (L1), and L2_ED is the effective diameter of the second lens (L2).

[0159] [Equation 5] relates to the condition of the ratio of the effective apertures of the first lens (L1) and the second lens (L2) for implementing an optical system (e.g., a hole in display) optimized for placement below a display (e.g., the display (201) of FIG. 2 and FIG. 3). If L1_ED / L2_ED of [Equation 5] is less than about 0.85 or greater than about 1.25, the structure of the optical system may be difficult to place in the receiving portion (e.g., a through hole and / or recess) of the display (201).

[0160] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 6].

[0161] [Equation 6]

[0162] V2+V3+V4 < 80

[0163] Here, V2 is the Abbe number of the second lens (L2) at a wavelength of 587.6 nm, V3 is the Abbe number of the third lens (L3) at a wavelength of 587.6 nm, and V4 is the Abbe number of the fourth lens (L4) at a wavelength of 587.6 nm. For example, V2+V3+V4 in [Equation 6] can be about 75, and as an example, V2 can be about 25, V3 can be about 25, and V4 can be about 25.

[0164] [Equation 6] relates to the materials of the lenses of an optical system, and concerns the conditions for the Abbe numbers of the second lens (L2), third lens (L3), and fourth lens (L4) to improve the performance of central chromatic aberration and peripheral chromatic aberration of the optical system while setting the thickness of the first lens (L1) to be thick.

[0165] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 7].

[0166] [Equation 7]

[0167] 0.12mm < CT2 < 0.2mm

[0168] Here, CT2 (center Thickness 2) is the center thickness of the second lens (L2).

[0169] According to one embodiment, if CT2 of [Equation 7] is smaller than about 0.12 mm, bending may occur in the lens when manufacturing the lens (e.g., injection molding), making it easy for defects to occur in the shape of the lens, which may make mass production difficult. If CT2 of [Equation 7] is larger than about 0.2 mm, the aberrations of the entire optical system increase, making it difficult to achieve good optical performance.

[0170] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 8].

[0171] [Equation 8]

[0172] 0.9 < TTL / f < 1.2

[0173] Here, TTL (total track length) in [Equation 8] is the distance from the subject side surface (S3) of the first lens (L1) to the image plane (img), and f (focal length) is the combined focal length of the optical system. [Equation 8] relates to the ratio of the total length of the optical system to the focal length for implementing a wide-angle optical system. If TTL / f in [Equation 8] is about 0.9 or less, the angle of view of the optical system becomes smaller, and it may become a telephoto type optical system rather than a wide-angle optical system. If TTL / f in [Equation 8] is about 1.2 or more, it becomes an ultra-wide-angle type optical system, which does not match the structure of the optical system of the present disclosure.

[0174] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 9].

[0175] [Equation 9]

[0176] N1 ≤ 1.6, N5 ≤ 1.6

[0177] Here, N1 is the refractive index of the first lens (L1) at a wavelength of 587.6 nm, and N5 is the refractive index of the fifth lens (L5) at a wavelength of 587.6 nm.

[0178] As a characteristic of the wide optical system, if the subject-side surface of the first lens (L1) has a convex shape, it may be advantageous to control aberrations such as spherical aberration. If N1 and N5 in [Equation 9] are each less than 1.6, an optical system with good imaging performance can be realized. Conversely, if N1 and / or N5 in [Equation 9] exceed 1.6, it may be difficult to secure the imaging performance of the optical system.

[0179] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 10].

[0180] [Equation 10]

[0181] N2 1.6

[0182] Here, N2 is the refractive index of the second lens (L2) at a wavelength of 587.6 nm.

[0183] [Equation 10] relates to the condition of the refractive index of the second lens (L2) to ensure the slimming and aberration characteristics of the optical system. If N2 in [Equation 10] is less than about 1.6, the angle of view of the optical system becomes smaller, which is advantageous for reducing the angle of view, but it becomes difficult to control various aberrations and optimize the performance of the modulation transfer function (MTF), and there is a disadvantage that the overall length of the optical system becomes longer.

[0184] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 11].

[0185] [Equation 11]

[0186] SD / TTL ≤ 0.8

[0187] Here, SD is the distance from the subject side of the first lens (L1) to the image side of the fifth lens (L5), and TTL is the distance from the subject side of the first lens (L1) to the image plane (img).

[0188] [Equation 11] relates to the condition of the ratio of the distance from the subject side surface (S3) of the first lens (L1) to the upper side surface of the last lens and the distance from the subject side surface (S3) of the first lens (L1) to the image plane (img). If the SD / TTL of [Equation 11] exceeds approximately 0.8, the distance between the lens and the image plane (img) becomes short, which may make mass production impossible.

[0189] According to one embodiment, the optical system (300, 400, 500, 600, 700, 800, 900) can satisfy the following [Equation 12].

[0190] [Equation 12]

[0191] f / EPD ≤ 2.5

[0192] Here, f(focal length) is the effective focal length of the optical system, and EPD(entrance pupil diameter) is the entrance pupil of the optical system.

[0193] [Equation 12] is an equation for defining the brightness of an optical system. If the f / EPD of [Equation 12] exceeds approximately 2.5, the limiting resolution is lowered, which can degrade the overall performance of the optical system and result in a relatively dark optical system.

[0194] The optical system (400) of FIG. 7a, the optical system (500) of FIG. 8a, the optical system (600) of FIG. 9a, and the optical system (700) of FIG. 10a, the optical system (800) of FIG. 11a, and the optical system (900) of FIG. 12a can satisfy the above-described [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5], and can satisfy at least one of the above-described [Equation 6] to [Equation 12].

[0195] Table 1 below shows the numerical values ​​of Equations 1 to 12 for the optical systems (300, 400, 500, 600, 700, 800, 900) according to Examples 2 to 7 described later with reference to Example 1 and FIGS. 7a to 12d. Referring to Table 1, it can be seen that the optical systems (300, 400, 500, 600, 700, 800, 900) according to Examples 1 to 7 satisfy the above-described Equations 1 to 12. In Table 1, the row of Equation 9 (N1) represents the numerical value of N1 of Equation 9, and the row of Equation 9 (N5) represents the numerical value of N5 of Equation 9.

[0196] Example 1 Example 2 Example 3 Example 4 Example 5 Example 6 Example 7 Formula 10.630.640.640.650.630.630.633 Formula 21.531.401.401.401.791.661.66 Formula 34.503.613.663.945.254.834.84 Formula 40.260.230.230.240.290.270.27 Formula 51.201.141.171.171.091.091.01 Formula 668.9169.1468.9168.9166.2266.4366.43 Formula 70.160.180.190.180.150.160.18 style 81.131.151.061.161.131.131.13 style 9(N1)1.5441.5441.5441.5441.5391.5391.539 style 9(N5)1.5441.5441.5441.5441.5441.544 style 101.6711.6711.6711.6711.6681.6711.671 style 110.760.750.750.750.760.760.76 style 122.282.282.282.282.302.302.30

[0197] In one embodiment, the optical system (300) may satisfy the shapes of the lenses (L1, L2, L3, L4, L5) (e.g., lens surfaces) described above and [Equation 1], [Equation 2], [Equation 3], [Equation 4], and [Equation 5] described above, and at least one of [Equation 6] to [Equation 12] described above, and may be manufactured to have the specifications exemplified in the following [Table 2]. In [Table 2], lens surface 1 may exemplify a gap between a subject (O) and an aperture (sto) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 in [Table 2] may be an aperture (stop). The lens surface 'n' (where n is 3 to 14) in [Table 2] may correspond to Sn (where n is 3 to 14), which is the lens surface that is the subject side or image side of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I). The optical system (300) implemented with the specifications of [Table 2] below may be a wide optical system with a focal length (f) of about 3.23 mm, an F-number (Fno) of about 2.22, and a field of view (FOV) of about 82 degrees.

[0198] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.16400.7302(stop)infinity-0.1440.73031.240920.7202.3211.5440155.990.730446.012260.1000.6495-5. 802090.160-6.4221.67119.230.600617.729310.2490.6097-5.975370.284-17.0651.63523.890.7208-13.410720.2900.9 8794.974010.32016.5421.61625.791.278109.403390.1841.493111.469790.471-7.1571.54455.992.020120.947080.233 2.19613infinity0.110infinity1.51764.202.59714infinity0.3692.63115infinity0.1592.818Image plane (img)infinity0.0021

[0199] Tables 3 and 4 below list the aspherical coefficients of the lenses (L1, L2, L3, L4, L5), and the aspherical coefficients can be calculated using the following Equation 1.

[0200] [Mathematical Formula 1]

[0201]

[0202] Here, 'x' is the distance from the vertex of the lenses (L1, L2, L3, L4, L5) in the direction of the optical axis (OI), 'y' is the distance in the direction perpendicular to the optical axis (OI), 'R' is the radius of curvature from the vertex of the lenses (L1, L2, L3, L4, L5), 'K'' is the conic constant, ' ' may represent an aspherical coefficient. In the present disclosure, the aspherical coefficients 'A4', 'A6', 'A8', 'A 10 ', 'A 12 ', 'A14 ', 'A 16 ', 'A 18 ', 'A 20 ', 'A 22 ', 'A 24 ', 'A 26 ', 'A 28 ', 'A 30 ' can be represented sequentially as 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', 'O'. For example, E+01 is 10 1 Eul, E-02 is 10 -2 It can represent. The radius of curvature (R) can represent, for example, a value indicating the degree of curvature at each point of a surface or curve.

[0203] 라이면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.215E+000.000E+000.000E+009.900E+010.000E+00A(4th) / C42.618E-01-1 .542E-01-3.780E-025.321E-02-2.399E-01B(6th) / C51.265E+00-2.774E+002.269E+004.499E+00-2.898E+00C(8th) / C6-3.098E+01 5.360E+01-5.566E+01-9.593E+017.773E+01D(10th) / C73.776E+02-5.647E+028.695E+021.507E+03-1.202E+03E(12th) / C8-3.003E +032.039E+03-8.627E+03-1.661E+041.193E+04F(14th) / C91.620E+042.363E+045.697E+041.306E+05-7.997E+04G(16th) / C10-6.02 3E+04-3.980E+05-2.564E+05-7.392E+053.729E+05H(18th) / C111.542E+052.919E+067.915E+053.005E+06-1.224E+06J(20th) / C12-2.671E+05-1.324E+07-1.652E+06-8.677E+062.817E+06K(22th) / C132.987E+053.988E+072.234E+061.732E+07-4.448E+06L(24th) ) / C14-1.948E+05-8.011E+07-1.769E+06-2.271E+074.584E+06M(26th) / C155.628E+041.034E+086.239E+051.757E+07-2.773E+06N(28th) / C160.000E+00-7.776E+070.000E+00-6.073E+067.455E+05O(30th) / C170.000E+002.591E+070.000E+000.000E+000.000E+00

[0204] 라이면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-2.131E+01-5.409E+00A(4th) / C4-2.217E- 011.298E-01-4.408E-01-7.255E-01-5.242E-01B(6th) / C5-9.269E-013.336E-023.976E+001.686E+001.149E+00C(8th) / C61.402E+0 1-1.354E+00-1.824E+01-3.953E+00-2.302E+00D(10th) / C7-1.504E+02-1.043E+015.176E+016.441E+003.429E+00E(12th) / C81.048E+039.515E+01-1.042E+02-7.075E+00-3.672E+00F(14th) / C9-4.861E+03-3.575E+021.557E+025.478E+002.845E+00G(16th) / C101.5 62E+048.237E+02-1.751E+02-3.087E+00-1.613E+00H(18th) / C11-3.568E+04-1.281E+031.479E+021.286E+006.715E-01J(20th) / C1 25.840E+041.387E+03-9.285E+01-3.969E-01-2.047E-01K(22th) / C13-6.803E+04-1.048E+034.254E+018.972E-024.505E-02L(24th) / C145.506E+045.429E+02-1.379E+01-1.445E-02-6.950E-03M(26th) / C15-2.942E+04-1.835E+022.994E+001.570E-037.120E-04N(28th) / C169.329E+033.642E+01-3.902E-01-1.032E-04-4.344E-05O(30th) / C17-1.329E+03-3.219E+002.310E-023.098E-061.193E-06

[0205] FIG. 6b is a graph showing the spherical aberration of an optical system (300) 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 6c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (300) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane (or meridional plane). FIG. 6d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (300) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0206] [Example 2]

[0207] FIG. 7a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 7b is a graph showing the spherical aberration of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure. FIG. 7c is a graph showing the astigmatism of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure. FIG. 7d is a graph showing the distortion rate of the optical system of FIG. 7a according to one embodiment disclosed in the present disclosure.

[0208] In the present disclosure, the configuration of the optical system (400) according to the embodiments of FIGS. 7a to 7d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description regarding the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (sto), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (400) according to the embodiments of FIGS. 7a to 7d.

[0209] The optical system (400) according to the embodiments of FIGS. 7a to 7d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0210] In one embodiment, the optical system (400) may be manufactured with the specifications exemplified in the following [Table 5] and may have the aspherical coefficients of [Table 6] and [Table 7]. In [Table 5], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to Sn (where n is 3 to 14), which is a lens surface that is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0211] The optical system (400) implemented with the specifications of [Table 5] below may be a wide optical system with a focal length (f) of about 3.24 mm, an F-number (Fno) of about 2.26, and a field of view (FOV) of about 81.91 degrees.

[0212] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.0700.7912(stop)infinity-0.1440.73031.264150.6502.3751.54455.990.717440.437880.0500.648547.619 050.180-6.0691.67119.230.61063.786100.3110.6307-4.205160.283-48.1951.63523.970.6908-4.995470.3490.90095.6 98580.320-34.7421.61425.941.335104.409420.1851.649111.087230.466-32.7001.54455.991.960120.869750.2372.13 713infinity0.110infinity1.51764.202.52614infinity0.3492.56415infinity0.2362.765Image plane (img)infinity0.0002.903

[0213] Tables 6 and 7 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (400), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0214] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.424E+000.000E+000.000E+00-2.135E+010.000E+00A(4th) / C42.623E-01-1.934E-01-9.648E-026.113E-02-3.074E-01B(6th) / C51.179E+00-3.018E+002.138E+005.725E+008.345E-01C(8th) / C6-3.313E+018.590E+01-4.259E+01-1.394E+02-2.276E+01D(10th) / C74.434E+02-1.463E+036.626E+022.396E+033.105E+02E(12th) / C8-3.811E+031.714E+04-6.574E+03-2.843E+04-2.711E+03F(14th) / C92.200E+04-1.426E+054.336E+042.381E+051.589E+04G(16th) / C10-8.694E+048.549E+05-1.956E+05-1.425E+06-6.288E+04H(18th) / C112.357E+05-3.717E+066.073E+056.101E+061.651E+05J(20th) / C12-4.308E+051.169E+07-1.278E+06-1.850E+07-2.715E+05K(22th) / C135.068E+05-2.622E+071.743E+063.877E+072.337E+05L(24th) / C14-3.464E+054.081E+07-1.392E+06-5.330E+07-1.303E+04M(26th) / C151.045E+05-4.170E+074.945E+054.324E+07-1.488E+05N(28th) / C160.000E+002.506E+070.000E+00-1.567E+078.846E+04O(30th) / C170.000E+00-6.673E+060.000E+000.000E+000.000E+00

[0215] 렌즈면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-1.056E+01-4.945E+00A(4th) / C4-2.023E-012.291E-01-4.503E-01-5.712E-01-4.169E-01B(6th) / C5-3.079E-01-3.865E-012.749E+003.221E-015.010E-01C(8th) / C61.781E-01-1.438E+00-8.075E+002.205E+00-1.570E-01D(10th) / C7-1.135E+011.187E+011.328E+01-8.302E+00-8.019E-01E(12th) / C81.858E+02-5.519E+01-1.379E+011.422E+011.723E+00F(14th) / C9-1.338E+031.679E+029.616E+00-1.475E+01-1.892E+00G(16th) / C105.858E+03-3.425E+02-5.148E+001.020E+011.356E+00H(18th) / C11-1.720E+044.800E+022.953E+00-4.927E+00-6.781E-01J(20th) / C123.504E+04-4.686E+02-2.032E+001.695E+002.411E-01K(22th) / C13-4.967E+043.183E+021.185E+00-4.153E-01-6.079E-02L(24th) / C144.811E+04-1.474E+02-4.678E-017.110E-021.062E-02M(26th) / C15-3.035E+044.434E+011.145E-01-8.105E-03-1.224E-03N(28th) / C161.123E+04-7.807E+00-1.572E-025.542E-048.353E-05O(30th) / C17-1.846E+036.104E-019.265E-04-1.723E-05-2.558E-06

[0216] FIG. 7b 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM), respectively. FIG. 7c 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 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 7d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (400) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0217] [Example 3]

[0218] FIG. 8a is a schematic diagram showing an optical system according to one embodiment of the present disclosure. FIG. 8b is a graph showing the spherical aberration of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure. FIG. 8c is a graph showing the astigmatism of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure. FIG. 8d is a graph showing the distortion rate of the optical system of FIG. 8a according to one embodiment disclosed in the present disclosure.

[0219] In the present disclosure, the configuration of the optical system (500) according to the embodiments of FIGS. 8a to 8d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (500) according to the embodiments of FIGS. 8a to 8d.

[0220] The optical system (500) according to the embodiments of FIGS. 8a to 8d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0221] In one embodiment, the optical system (500) may be manufactured with the specifications exemplified in the following [Table 8] and may have the aspherical coefficients of [Table 9] and [Table 10]. In [Table 8], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to Sn (where n is 3 to 14), which is a lens surface that is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0222] The optical system (500) implemented with the specifications of [Table 8] below may be a wide optical system with a focal length (f) of about 3.395 mm, an F-number (Fno) of about 2.27, and a field of view (FOV) of about 81.88 degrees.

[0223] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.0700.8412(stop)infinity-0.1510.78031.320930.6802.4821.54455.990.774441.744870.0500.680538.176 470.186-6.2921.67119.230.63563.833930.3190.6617-4.213220.302-52.7141.63523.890.7358-4.948070.3760.93695.9 86130.333-36.0761.61625.791.385104.623510.1941.706111.124090.487-33.9791.54455.992.040120.897670.2482.226 13infinity0.110infinity1.51764.202.63514infinity0.3652.67515infinity0.2542.891Image plane (img)infinity-0.0053.042

[0224] Tables 9 and 10 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (500), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0225] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.383E+000.000E+000.000E+00-2.025E+010.000E+00A(4th) / C42.362E-01-1.851E-01-8.344E-027.154E-02-2.907E-01B(6th) / C57.041E-01-2.102E+001.428E+004.018E+002.618E+00C(8th) / C6-1.975E+016.058E+01-2.405E+01-9.341E+01-7.115E+01D(10th) / C72.449E+02-9.761E+023.551E+021.528E+031.018E+03E(12th) / C8-1.940E+031.057E+04-3.319E+03-1.702E+04-9.299E+03F(14th) / C91.031E+04-8.050E+042.030E+041.327E+055.796E+04G(16th) / C10-3.749E+044.397E+05-8.376E+04-7.356E+05-2.536E+05H(18th) / C119.352E+04-1.737E+062.348E+052.909E+067.866E+05J(20th) / C12-1.573E+054.952E+06-4.403E+05-8.135E+06-1.721E+06K(22th) / C131.703E+05-1.005E+075.282E+051.571E+072.595E+06L(24th) / C14-1.071E+051.408E+07-3.660E+05-1.990E+07-2.568E+06M(26th) / C152.974E+04-1.287E+071.113E+051.488E+071.500E+06N(28th) / C160.000E+006.854E+060.000E+00-4.971E+06-3.916E+05O(30th) / C170.000E+00-1.594E+060.000E+000.000E+000.000E+00

[0226] Lens surface (Surface) 8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic) 0.000E+000.000E+000.000E+00-1.044E+01-4.852E+00A(4th) / C4-1.714E-011.964E-01-4.115E-01-5.054E-01-3.770E-01B(6th) / C53.549E-02-2.596E-012.439E+003.967E-014.854E-01C(8th) / C6-7.609E+0 0-1.426E+00-7.309E+009.595E-01-3.893E-01D(10th) / C77.669E+018.996E+001.347E+01-3.976E+00-7.084E-03E(12th) / C8-4.234 E+02-3.315E+01-1.780E+016.374E+003.871E-01F(14th) / C91.504E+038.261E+011.817E+01-5.977E+00-4.828E-01G(16th) / C10-3.5 21E+03-1.422E+02-1.480E+013.679E+003.446E-01H(18th) / C115.206E+031.713E+029.611E+00-1.564E+00-1.658E-01J(20th) / C12 -3.884E+03-1.455E+02-4.854E+004.695E-015.613E-02K(22th) / C13-1.070E+038.657E+011.836E+00-9.955E-02-1.341E-02L(24th) / C145.678E+03-3.526E+01-4.953E-011.463E-022.215E-03M(26th) / C15-5.821E+039.346E+008.919E-02-1.422E-03-2.407E-04N(28th) / C162.818E+03-1.450E+00-9.544E-038.226E-051.547E-05O(30th) / C17-5.559E+029.973E-024.572E-04-2.151E-06-4.449E-07

[0227] FIG. 8b 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 8c 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 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 8d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (500) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0228] [Example 4]

[0229] 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 disclosed in the present disclosure. FIG. 9c is a graph showing the astigmatism of the optical system of FIG. 9a according to one embodiment disclosed in the present disclosure. FIG. 9d is a graph showing the distortion rate of the optical system of FIG. 9a according to one embodiment disclosed in the present disclosure.

[0230] In the present disclosure, the configuration of the optical system (600) according to the embodiments of FIGS. 9a to 9d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (600) according to the embodiments of FIGS. 9a to 9d.

[0231] The optical system (600) according to the embodiments of FIGS. 9a to 9d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0232] In one embodiment, the optical system (600) may be manufactured with the specifications exemplified in the following [Table 11] and may have the aspherical coefficients of [Table 12] and [Table 13]. In [Table 11], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to lens surface Sn (where n is 3 to 14), which is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0233] The optical system (600) implemented with the specifications of [Table 11] below may be a wide optical system with a focal length (f) of about 3.39 mm, an F-number (Fno) of about 2.23, and a field of view (FOV) of about 81.78 degrees.

[0234] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.0700.8402(stop)infinity-0.1700.78031.338910.7102.5271.54455.990.776435.836690.0700.680533.123 260.180-6.4121.67119.230.63563.839070.3050.6667-4.894970.299-51.8561.63523.890.7358-5.876990.3690.94196.3 49840.331-43.3701.61625.791.405105.036060.1911.709111.172970.507-35.3831.54455.992.100120.937130.2482.27 613infinity0.110infinity1.51764.202.66714infinity0.3652.70415infinity0.2362.903Image plane (img)infinity0.0053.042

[0235] Tables 12 and 4 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (600), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0236] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.402E+000.000E+000.000E+00-2.380E+010.000E+00A(4th) / C42.209E-01-1.588E-01-5.134E-021.780E-01-3.009E-01B(6th) / C59.188E-01-2.163E+003.632E-01-8.422E-012.875E+00C(8th) / C6-2.199E+017.272E+012.420E-022.415E+01-6.964E+01D(10th) / C72.465E+02-1.413E+031.290E+01-3.127E+029.019E+02E(12th) / C8-1.749E+031.840E+04-1.772E+022.585E+03-7.511E+03F(14th) / C98.261E+03-1.675E+058.008E+02-1.356E+044.296E+04G(16th) / C10-2.656E+041.087E+06-3.138E+014.080E+04-1.736E+05H(18th) / C115.825E+04-5.081E+06-1.441E+04-3.460E+044.997E+05J(20th) / C12-8.558E+041.711E+076.426E+04-2.302E+05-1.018E+06K(22th) / C138.034E+04-4.106E+07-1.348E+051.022E+061.433E+06L(24th) / C14-4.338E+046.845E+071.437E+05-1.958E+06-1.324E+06M(26th) / C151.020E+04-7.527E+07-6.264E+041.911E+067.222E+05N(28th) / C160.000E+004.906E+070.000E+00-7.730E+05-1.758E+05O(30th) / C170.000E+00-1.435E+070.000E+000.000E+000.000E+00

[0237] 렌즈면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-1.039E+01-4.791E+00A(4th) / C4-1.870E-011.398E-01-4.341E-01-5.310E-01-3.802E-01B(6th) / C51.104E-013.610E-012.631E+006.490E-015.733E-01C(8th) / C6-6.595E+00-5.472E+00-8.451E+001.715E-02-7.134E-01D(10th) / C75.690E+012.559E+011.713E+01-2.131E+006.210E-01E(12th) / C8-2.706E+02-7.905E+01-2.516E+014.164E+00-3.834E-01F(14th) / C98.117E+021.722E+022.826E+01-4.220E+001.669E-01G(16th) / C10-1.510E+03-2.686E+02-2.464E+012.709E+00-4.678E-02H(18th) / C111.383E+033.022E+021.659E+01-1.182E+005.103E-03J(20th) / C126.707E+02-2.449E+02-8.468E+003.611E-011.923E-03K(22th) / C13-3.868E+031.413E+023.190E+00-7.752E-02-1.072E-03L(24th) / C145.452E+03-5.652E+01-8.533E-011.149E-022.536E-04M(26th) / C15-4.091E+031.486E+011.524E-01-1.121E-03-3.409E-05N(28th) / C161.658E+03-2.308E+00-1.624E-026.497E-052.524E-06O(30th) / C17-2.868E+021.601E-017.780E-04-1.694E-06-8.023E-08

[0238] FIG. 9b 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 9c 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 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 9d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (600) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0239] [Example 5]

[0240] 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 disclosed in the present disclosure. FIG. 10c is a graph showing the astigmatism of the optical system of FIG. 10a according to one embodiment disclosed in the present disclosure. FIG. 10d is a graph showing the distortion rate of the optical system of FIG. 10a according to one embodiment disclosed in the present disclosure.

[0241] In the present disclosure, the configuration of the optical system (700) according to the embodiments of FIGS. 10a to 10d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (700) according to the embodiments of FIGS. 10a to 10d.

[0242] The optical system (700) according to the embodiments of FIGS. 10a to 10d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0243] In one embodiment, the optical system (700) may be manufactured with the specifications exemplified in the following [Table 14] and may have the aspherical coefficients of [Table 15] and [Table 16]. In [Table 14], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to lens surface Sn (where n is 3 to 14), which is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0244] The optical system (700) implemented with the specifications of [Table 14] below may be a wide optical system with a focal length (f) of about 3.24 mm, an F-number (Fno) of about 2.3, and a field of view (FOV) of about 81.90 degrees.

[0245] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.1640.7002(stop)infinity-0.1440.70031.246940.8002.3291.53955.900.708490.827630.1000.6345-5.155 390.152-6.7451.66819.550.600639.763040.2450.6477-6.205570.282-14.9761.65421.020.7208-16.932750.2760.98994 .986480.32015.7811.61625.651.285109.886330.1601.490111.489580.448-6.7851.54456.092.020120.949770.2332.161 13infinity0.110infinity1.51764.202.58114infinity0.3692.61715infinity0.1592.815Image plane (img)infinity-0.0052.904

[0246] Tables 15 and 16 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (700), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0247] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.169E+000.000E+000.000E+006.207E+010.000E+00A(4th) / C42.523E-01-1.758E-011.481E-021.075E-02-3.277E-01B(6th) / C51.230E+00-2.340E+00-3.049E-016.741E+008.329E-01C(8th) / C6-2.754E+016.076E+018.025E+00-1.535E+021.464E+00D(10th) / C73.049E+02-1.090E+03-7.801E+012.411E+03-2.220E+02E(12th) / C8-2.175E+031.328E+044.822E+02-2.587E+043.401E+03F(14th) / C91.043E+04-1.128E+05-2.122E+031.950E+05-2.766E+04G(16th) / C10-3.414E+046.795E+057.894E+03-1.051E+061.424E+05H(18th) / C117.598E+04-2.918E+06-2.718E+044.062E+06-4.920E+05J(20th) / C12-1.121E+058.879E+067.693E+04-1.117E+071.159E+06K(22th) / C131.034E+05-1.876E+07-1.487E+052.133E+07-1.840E+06L(24th) / C14-5.269E+042.641E+071.656E+05-2.683E+071.883E+06M(26th) / C151.075E+04-2.283E+07-7.933E+041.999E+07-1.123E+06N(28th) / C160.000E+001.015E+070.000E+00-6.680E+062.961E+05O(30th) / C170.000E+00-1.349E+060.000E+000.000E+000.000E+00

[0248] 라이면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-2.204E+01-5.575E+00A(4th) / C4-2.146E- 011.807E-01-4.488E-01-7.706E-01-5.381E-01B(6th) / C5-8.496E-01-5.162E-014.183E+001.905E+001.236E+00C(8th) / C61.121E+ 011.668E+00-1.934E+01-4.587E+00-2.576E+00D(10th) / C7-1.135E+02-1.869E+015.567E+017.520E+003.955E+00E(12th) / C87.705E+029.932E+01-1.145E+02-8.241E+00-4.339E+00F(14th) / C9-3.496E+03-3.103E+021.759E+026.330E+003.430E+00G(16th) / C101.0 99E+046.446E+02-2.036E+02-3.523E+00-1.976E+00H(18th) / C11-2.451E+04-9.343E+021.769E+021.445E+008.345E-01J(20th) / C1 23.911E+049.600E+02-1.141E+02-4.380E-01-2.575E-01K(22th) / C13-4.436E+04-6.964E+025.355E+019.723E-025.728E-02L(24th) / C143.490E+043.485E+02-1.774E+01-1.539E-02-8.928E-03M(26th) / C15-1.811E+04-1.144E+023.923E+001.647E-039.238E-04N(28th) / C165.573E+032.213E+01-5.193E-01-1.068E-04-5.694E-05O(30th) / C17-7.697E+02-1.911E+003.112E-023.173E-061.581E-06

[0249] FIG. 10b 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 10c 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 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 10d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (700) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0250] [Example 6]

[0251] 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 disclosed in the present disclosure. FIG. 11c is a graph showing the astigmatism of the optical system of FIG. 11a according to one embodiment disclosed in the present disclosure. FIG. 11d is a graph showing the distortion rate of the optical system of FIG. 11a according to one embodiment disclosed in the present disclosure.

[0252] In the present disclosure, the configuration of the optical system (800) according to the embodiments of FIGS. 11a to 11d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (800) according to the embodiments of FIGS. 11a to 11d.

[0253] The optical system (800) according to the embodiments of FIGS. 11a to 11d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0254] In one embodiment, the optical system (800) may be manufactured with the specifications exemplified in the following [Table 17] and may have the aspherical coefficients of [Table 18] and [Table 19]. In [Table 17], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to lens surface Sn (where n is 3 to 14), which is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0255] The optical system (800) implemented with the specifications of [Table 17] below may be a wide optical system with a focal length (f) of about 3.22 mm, an F-number (Fno) of about 2.30, and a field of view (FOV) of about 81.4 degrees.

[0256] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.1640.7002(stop)infinity-0.1440.69831.243000.7602.3371.53955.900.703458.643610.1000.6375-5.5440 70.157-6.7461.67119.230.600626.631040.2510.6467-6.208760.284-15.3661.65121.260.7208-16.363700.2820.98794. 997680.32015.4971.61425.941.2851010.159100.1701.490111.479380.459-7.2051.54456.072.020120.957310.2332.182 13infinity0.110infinity1.51764.202.59214infinity0.3692.62715infinity0.1592.815Image plane (img)infinity-0.0032.904

[0257] Tables 18 and 19 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (800), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0258] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.174E+000.000E+000.000E+009.900E+010.000E+00A(4th) / C42.782E-01-1.486E-01-2.738E-037.500E-03-3.088E-01B(6th) / C56.390E-01-4.153E+001.805E-017.341E+001.026E-01C(8th) / C6-1.927E+011.209E+022.158E+00-1.779E+021.406E+01D(10th) / C72.407E+02-2.346E+03-6.711E+012.938E+03-3.438E+02E(12th) / C8-1.948E+033.116E+041.106E+03-3.299E+044.114E+03F(14th) / C91.074E+04-2.924E+05-1.111E+042.592E+05-3.021E+04G(16th) / C10-4.108E+041.975E+067.140E+04-1.450E+061.476E+05H(18th) / C111.089E+05-9.679E+06-2.993E+055.799E+06-4.955E+05J(20th) / C12-1.966E+053.439E+078.152E+05-1.645E+071.150E+06K(22th) / C132.302E+05-8.762E+07-1.391E+063.228E+07-1.813E+06L(24th) / C14-1.576E+051.559E+081.353E+06-4.165E+071.851E+06M(26th) / C154.791E+04-1.838E+08-5.717E+053.178E+07-1.103E+06N(28th) / C160.000E+001.290E+080.000E+00-1.086E+072.906E+05O(30th) / C170.000E+00-4.082E+070.000E+000.000E+000.000E+00

[0259] 렌즈면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-2.194E+01-5.505E+00A(4th) / C4-2.156E-011.674E-01-4.238E-01-7.636E-01-5.325E-01B(6th) / C5-8.417E-01-3.036E-013.730E+001.875E+001.218E+00C(8th) / C61.118E+012.588E-02-1.622E+01-4.493E+00-2.525E+00D(10th) / C7-1.136E+02-1.016E+014.324E+017.335E+003.852E+00E(12th) / C87.719E+026.844E+01-8.236E+01-8.013E+00-4.200E+00F(14th) / C9-3.500E+03-2.318E+021.187E+026.142E+003.301E+00G(16th) / C101.100E+045.030E+02-1.313E+02-3.415E+00-1.892E+00H(18th) / C11-2.451E+04-7.521E+021.111E+021.400E+007.948E-01J(20th) / C123.910E+047.926E+02-7.067E+01-4.249E-01-2.441E-01K(22th) / C13-4.433E+04-5.876E+023.307E+019.439E-025.405E-02L(24th) / C143.488E+042.996E+02-1.099E+01-1.495E-02-8.387E-03M(26th) / C15-1.810E+04-9.996E+012.450E+001.599E-038.640E-04N(28th) / C165.567E+031.961E+01-3.280E-01-1.036E-04-5.303E-05O(30th) / C17-7.688E+02-1.714E+001.993E-023.069E-061.466E-06

[0260] FIG. 11b is a graph showing the spherical aberration of an optical system (800) 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 11c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (800) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 11d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (800) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm).

[0261] [Example 7]

[0262] 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 disclosed in the present disclosure. FIG. 12c is a graph showing the astigmatism of the optical system of FIG. 12a according to one embodiment disclosed in the present disclosure. FIG. 12d is a graph showing the distortion rate of the optical system of FIG. 12a according to one embodiment disclosed in the present disclosure.

[0263] In the present disclosure, the configuration of the optical system (900) according to the embodiments of FIGS. 12a to 12d may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 6a to 6d. The description of the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (300) according to the embodiments of FIGS. 6a to 6d may be applied identically or similarly to the first lens (L1), second lens (L2), third lens (L3), fourth lens (L4), fifth lens (L5), aperture (stop), filter member (F), and / or image sensor (I) of the optical system (900) according to the embodiments of FIGS. 12a to 12d.

[0264] The optical system (900) according to the embodiments of FIGS. 12a to 12d can satisfy [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5] described above in the embodiments of FIGS. 6a to 6d, and can satisfy at least one of [Equation 6] to [Equation 12] described above.

[0265] In one embodiment, the optical system (900) may be manufactured with the specifications exemplified in the following [Table 20] and may have the aspherical coefficients of [Table 21] and [Table 22]. In [Table 20], lens surface 1 may exemplify a gap between a subject (O) and an aperture (stop) (or the subject side surface (S3) of the first lens (L1)), and the measured value of the thickness may be the distance of the gap or the air gap. Lens surface 2 of [Table 2] may be an aperture (stop). Lens surface 'n' of [Table 2] (where n is 3 to 14) may correspond to lens surface Sn (where n is 3 to 14), which is the subject side surface or image side surface of the lenses (L1, L2, L3, L4, L5) of the present disclosure. 'img' in [Table 2] may be the image plane (img) of the image sensor (I).

[0266] The optical system (900) implemented with the specifications of [Table 20] below may be a wide optical system with a focal length (f) of about 3.64 mm, an F-number (Fno) of about 2.30, and a field of view (FOV) of about 82.4 degrees.

[0267] Lens Surface Radius Thickness Effective Focal Length (EFL) Refractive Index (Nd) Abbe Number (Vd) Effective Mirror Subject (O) infinity 1infinity0.1640.7002(stop)infinity-0.1630.70031.404590.8592.6401.53955.900.734466.267270.1130.6995-6.2648 00.178-7.6221.67119.230.678630.093080.2830.7297-7.015890.321-17.3631.65121.260.8148-18.490980.3181.11595. 647380.36217.5121.61425.941.4521011.479790.1921.683111.671700.518-8.1411.54456.072.283121.081760.2642.464 13infinity0.110infinity1.51764.202.92714infinity0.4172.96215infinity0.1913.178Image plane (img)infinity-0.0033.282

[0268] Tables 21 and 22 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (900), and the aspherical coefficients can be calculated using the above-described [Equation 1] by referring to Tables 3 and 4.

[0269] 렌즈면(Surface)3_ASP4_ASP5_ASP6_ASP7_ASPK'(Conic)-5.174E+000.000E+000.000E+009.900E+010.000E+00A(4th) / C41.928E-01-1.030E-01-1.898E-035.198E-03-2.140E-01B(6th) / C53.468E-01-2.254E+009.797E-023.985E+005.570E-02C(8th) / C6-8.189E+005.140E+019.175E-01-7.562E+015.975E+00D(10th) / C78.011E+01-7.808E+02-2.234E+019.781E+02-1.145E+02E(12th) / C8-5.079E+028.123E+032.884E+02-8.599E+031.072E+03F(14th) / C92.193E+03-5.971E+04-2.269E+035.292E+04-6.168E+03G(16th) / C10-6.568E+033.158E+051.142E+04-2.318E+052.360E+04H(18th) / C111.364E+04-1.212E+06-3.748E+047.262E+05-6.205E+04J(20th) / C12-1.928E+043.373E+067.994E+04-1.613E+061.128E+05K(22th) / C131.768E+04-6.729E+06-1.069E+052.479E+06-1.392E+05L(24th) / C14-9.481E+039.374E+068.135E+04-2.505E+061.113E+05M(26th) / C152.257E+03-8.656E+06-2.693E+041.497E+06-5.196E+04N(28th) / C160.000E+004.759E+060.000E+00-4.006E+051.072E+04O(30th) / C170.000E+00-1.179E+060.000E+000.000E+000.000E+00

[0270] 라이면(Surface)8_ASP9_ASP10_ASP11_ASP12_ASPK'(Conic)0.000E+000.000E+000.000E+00-2.194E+01-5.505E+00A(4th) / C4-1.494E- 011.160E-01-2.937E-01-5.292E-01-3.691E-01B(6th) / C5-4.569E-01-1.648E-012.024E+001.018E+006.612E-01C(8th) / C64.750E+ 001.100E-02-6.894E+00-1.910E+00-1.073E+00D(10th) / C7-3.782E+01-3.382E+001.439E+012.442E+001.282E+00E(12th) / C82.012E+021.784E+01-2.147E+01-2.089E+00-1.095E+00F(14th) / C9-7.146E+02-4.733E+012.423E+011.254E+006.740E-01G(16th) / C101.7 58E+038.042E+01-2.100E+01-5.461E-01-3.025E-01H(18th) / C11-3.069E+03-9.418E+011.391E+011.754E-019.952E-02J(20th) / C1 23.834E+037.773E+01-6.930E+00-4.167E-02-2.394E-02K(22th) / C13-3.405E+03-4.512E+012.540E+007.249E-034.151E-03L(24th) / C142.098E+031.802E+01-6.611E-01-8.990E-04-5.044E-04M(26th) / C15-8.524E+02-4.708E+001.154E-017.531E-054.070E-05N(28th) / C162.054E+027.234E-01-1.210E-02-3.821E-06-1.956E-06O(30th) / C17-2.221E+01-4.951E-025.757E-048.866E-084.236E-08

[0271] FIG. 12b is a graph showing the spherical aberration of an optical system (900) 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 (OI) normalized, and shows the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.2700 (NM, nanometer), 587.5600 (NM), 546.0700 (NM), 486.1300 (NM), and 435.8300 (NM). FIG. 12c is a graph showing astigmatic field curves for light of wavelength 546.0700 (NM) of an optical system (900) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane and 'T' exemplifies a tangential plane or meridional plane. FIG. 12d is a graph showing distortion for light of wavelength 546.0700 (NM) of an optical system (900) according to one embodiment of the present disclosure. The refractive index of the lens(s) mentioned in one embodiment may refer to the refractive index for light of wavelength approximately 587.6 nm (587.5600 nm). An optical system comprising multiple lenses may be applied to camera modules of various electronic devices (e.g., smartphones, tablet PCs, smartwatches, drones). Such an optical system may be placed below the display, for example, in a receiving portion in the form of a through hole or recess formed in a part of the display. It may be advantageous to reduce the size of the receiving portion in order to expand the screen display area of ​​the display and improve the exterior design so that the receiving portion is not conspicuously visible from the exterior of the display.When the aperture of the optical system is positioned as close as possible to the display, for example, around the subject-side surface of the first lens from the subject side, it may be advantageous for reducing the size of the receiving portion of the display compared to when the aperture is positioned relatively further away from the display. However, when the aperture of the optical system is positioned as close as possible to the display, the first lens (hereinafter referred to as the first lens) from the subject side may also be positioned as close as possible to the display, and if the thickness of the first lens is not thick, other lenses may also be positioned in the receiving portion, and the size of the receiving portion of the display may increase due to the limitations of the design freedom of the lens barrel (or flange) structure supporting the lenses. Conversely, when the aperture of the optical system and the first lens are positioned as close as possible to the display, and the thickness of the first lens is sufficiently thick so that other lenses are positioned as far outside the receiving portion as possible, it is advantageous for reducing the size of the receiving portion of the display, but it may be disadvantageous for ensuring the performance of the optical system due to the thick thickness of the first lens.

[0272] According to one embodiment of the present disclosure, an optical system and an electronic device including the same can be provided, wherein the aperture of the optical system is positioned as close as possible to the display and a first lens, which is the first lens among the lenses from the subject side, is positioned within the receiving portion of the display, and the center thickness of the first lens is designed to be sufficiently thick so that the first lens is suitable for being positioned within the receiving portion and the other lenses excluding the first lens are positioned as far outside the receiving portion as possible, thereby minimizing the size of the receiving portion. According to one embodiment of the present disclosure, an optical system can be provided that is slimmed down and secures performance equivalent to that of a five-element lens by designing the center thickness of the first lens thickly while reducing the total track length (TTL) of the entire optical system through the optimization of the shape and thickness of the second, third, and fourth lenses, and by improving the aberration control performance of the optical system.

[0273] According to one embodiment of the present disclosure, an optical system may be provided for implementing a bright wide-angle optical device (e.g., a front camera) with good resolution and high pixel count, while being miniaturized and / or slimmed down so as to be suitable for placement in a through hole or recess formed in a display. According to one embodiment of the present disclosure, an optical system may be provided that is easy to mount in a miniaturized and / or lightweight electronic device, such as a smartphone, and can contribute to the expansion of the optical functions of the electronic device or the improvement of optical performance.

[0274] The technical problems to be solved from the disclosure of the present disclosure are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the description of the present disclosure.

[0275] The effects obtainable from the disclosure of the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description of the present disclosure.

[0276] 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; 800). The above optical system may include a lens group (G) comprising a first lens (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having negative refractive power, a fourth lens (L4) having refractive power and formed such that at least one of the object side surface (S9) or image side surface (S10) includes at least one inflection point, and a fifth lens (L5) having negative refractive power and formed such that the object side surface (S11) and image side surface (S12) include at least one inflection point, and an image sensor (IS) comprising an image plane (img) where an image (I) is formed.

[0277] The above optical system is an electronic device satisfying the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5].

[0278] [Equation 1]

[0279] TTL / IH < 0.68

[0280] [Equation 2]

[0281] 249Thi_L1 / (Thi_Lmax) > 1.3

[0282] [Equation 3]

[0283] Thi_L1 / (Thi_Lmin) > 3.0

[0284] [Equation 4]

[0285] Thi_L1 / SD > 0.22

[0286] [Equation 5]

[0287] 0.85 ≤ L1_ED / L2_ED ≤ 1.25

[0288] (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens)

[0289] According to one embodiment, the optical system can satisfy the following [Equation 6].

[0290] [Equation 6]

[0291] V2+V3+V4 < 80

[0292] (Here, V2 is the Abbe number of the second lens at a wavelength of 587.6 nm, V3 is the Abbe number of the third lens at a wavelength of 587.6 nm, and V4 is the Abbe number of the fourth lens at a wavelength of 587.6 nm)

[0293] According to one embodiment, the second lens can satisfy the following [Equation 7].

[0294] 0.12mm < CT2 < 0.2mm

[0295] (Here, CT2(center Thickness 2) is the center thickness of the second lens)

[0296] According to one embodiment, the optical system can satisfy the following [Equation 8].

[0297] [Equation 8]

[0298] 0.9 < TTL / f < 1.2

[0299] (Here, TTL (total track length) is the distance from the subject side surface of the first lens to the image plane, and f (focal length) is the combined focal length of the optical system.)

[0300] According to one embodiment, the subject-side surface of the first lens may be formed convexly toward the subject.

[0301] According to one embodiment, the optical system can satisfy the following [Equation 9].

[0302] [Equation 9]

[0303] N1 ≤ 1.6, N5 ≤ 1.6

[0304] (Here, N1 is the refractive index of the first lens at a wavelength of 587.6 nm, and N5 is the refractive index of the fifth lens at a wavelength of 587.6 nm)

[0305] According to one embodiment, the second lens can satisfy the following [Equation 10].

[0306] [Equation 10]

[0307] N2 1.6

[0308] (Here, N2 is the refractive index of the second lens at a wavelength of 587.6 nm)

[0309] According to one embodiment, the optical system can satisfy the following [Equation 11].

[0310] [Equation 11]

[0311] SD / TTL ≤ 0.8

[0312] (Here, SD is the distance from the subject side surface of the first lens to the image side surface of the fifth lens, and TTL is the distance from the subject side surface of the first lens to the image plane.)

[0313] According to one embodiment, the optical system can satisfy the following [Equation 12], which represents the brightness of the optical system.

[0314] [Equation 12]

[0315] f / EPD ≤ 2.5

[0316] (Here, f(focal length) is the effective focal length of the optical system, and EPD(entrance pupil diameter) is the entrance pupil of the optical system)

[0317] According to one embodiment, at least one of the subject side surface or image side surface of the fourth lens has an inflection shape, and at least one of the subject side surface or image side surface of the fifth lens may have an inflection shape.

[0318] According to one embodiment, a display (201) is further included, and the display may include a receiving portion comprising at least one of a through hole or a recess in which at least a part of the optical system is received.

[0319] According to one embodiment, the first lens is disposed within the receiving portion, and the second lens may be located partially or entirely outside the receiving portion.

[0320] According to one embodiment, the optical system further includes a stop positioned around the subject side of the first lens and a lens barrel (10) supporting the edge of the lens group, and the stop may be coupled to the display adjacent to the receiving portion or coupled to the lens barrel.

[0321] According to one embodiment, the diameter (D) of the portion of the lens barrel facing the subject side of the first lens may be smaller than the diameter of the receiving portion.

[0322] According to one embodiment of the present disclosure, an optical system (300; 400; 500; 600; 700; 800) may be provided. The above optical system may include a lens group (G) comprising a first lens (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having negative refractive power, a fourth lens (L4) having refractive power and formed such that at least one of the object side surface (S9) or image side surface (S10) includes at least one inflection point, and a fifth lens (L5) having negative refractive power and formed such that the object side surface (S11) and image side surface (S12) include at least one inflection point, and an image sensor (IS) comprising an image plane (img) where an image (I) is formed.

[0323] The above optical system is an electronic device satisfying the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5].

[0324] [Equation 1]

[0325] TTL / IH < 0.68

[0326] [Equation 2]

[0327] Thi_L1 / (Thi_Lmax) > 1.3

[0328] [Equation 3]

[0329] Thi_L1 / (Thi_Lmin) > 3.0

[0330] [Equation 4]

[0331] Thi_L1 / SD > 0.22

[0332] [Equation 5]

[0333] 0.85 ≤ L1_ED / L2_ED ≤ 1.25

[0334] (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens)

[0335] According to one embodiment, the optical system may further include an aperture (sto) positioned closer to the subject side than the vertex of the subject side of the first lens around the subject side of the first lens.

[0336] According to one embodiment, the optical system may satisfy at least one of the following [Equation 6], [Equation 7], or [Equation 8].

[0337] [Equation 6]

[0338] V2+V3+V4 < 80

[0339] [Equation 7]

[0340] 0.12mm < CT2 < 0.2mm

[0341] [Equation 8]

[0342] 0.9 < TTL / f < 1.2

[0343] (Here, V2 in [Equation 6] is the Abbe number of the second lens at a wavelength of 587.6 nm, V3 is the Abbe number of the third lens at a wavelength of 587.6 nm, V4 is the Abbe number of the fourth lens at a wavelength of 587.6 nm, CT2 (center Thickness 2) in [Equation 7] is the center thickness of the second lens, TTL (total track length) in [Equation 8] is the distance from the subject side surface of the first lens to the image plane, and f (focal length) is the combined focal length of the optical system)

[0344] According to one embodiment, the optical system may satisfy at least one of the following [Equation 9] or [Equation 10].

[0345] [Equation 9]

[0346] N1 ≤ 1.6, N5 ≤ 1.6

[0347] [Equation 10]

[0348] N2 1.6

[0349] (Here, N1 in [Equation 9] is the refractive index of the first lens at a wavelength of 587.6 nm, N5 is the refractive index of the fifth lens at a wavelength of 587.6 nm, and N2 in [Equation 10] is the refractive index of the second lens at a wavelength of 587.6 nm)

[0350] According to one embodiment, the optical system may satisfy at least one of the following [Equation 11] and [Equation 12].

[0351] [Equation 11]

[0352] SD / TTL ≤ 0.8

[0353] [Equation 12]

[0354] f / EPD ≤ 2.5

[0355] (Here, SD in [Equation 11] is the distance from the subject side surface of the first lens to the image side surface of the fifth lens, TTL is the distance from the subject side surface of the first lens to the image plane, f (focal length) in [Equation 12] is the effective focal length of the optical system, and EPD (entrance pupil diameter) is the entrance pupil of the optical system)

[0356] According to one embodiment, the subject-side surface of the first lens may be formed convexly toward the subject. At least one of the subject-side surface or the image-side surface of the fourth lens may have an inflection shape, and at least one of the subject-side surface or the image-side surface of the fifth lens may have an inflection shape.

[0357] One embodiment disclosed in this disclosure should be understood as an example rather than as limiting the disclosure. 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 disclosure, including the appended claims and their equivalents.

[0358] An electronic device according to one embodiment disclosed in this disclosure may be a device of various forms. An 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. An electronic device according to an embodiment of this disclosure is not limited to the aforementioned devices.

[0359] One embodiment of the present disclosure and the terms used therein are not intended to limit the technical features described in the present disclosure 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 the present 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” each may 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.

[0360] As used in one embodiment of the present disclosure, 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).

[0361] One embodiment of the present disclosure 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.

[0362] According to one embodiment, the method according to one embodiment disclosed herein 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., Play 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.

[0363] 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

In an electronic device (101) including an optical system (300, 400, 500, 600, 700, 800), The above optical system is, A lens group (G) comprising a first lens (L1) having positive refractive power, a second lens (L2) having negative refractive power, a third lens (L3) having negative refractive power, a fourth lens (L4) having refractive power and formed such that at least one of the object side surface (S9) or the image side surface (S10) includes at least one inflection point, and a fifth lens (L5) having negative refractive power and formed such that the object side surface (S11) and the image side surface (S12) include at least one inflection point; and An electronic device comprising an image sensor (IS) including an image plane (img) on ​​which an image (I) is formed, wherein the optical system satisfies the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5]. [Equation 1] TTL / IH < 0.68 [Equation 2] Thi_L1 / (Thi_Lmax) > 1.3 [Equation 3] Thi_L1 / (Thi_Lmin) > 3.0 [Equation 4] Thi_L1 / SD > 0.22 [Equation 5] 0.85 ≤ L1_ED / L2_ED ≤ 1.25 (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens) In Article 1, The above optical system is an electronic device satisfying the following [Equation 6]. [Equation 6] V2+V3+V4 < 80 (Here, V2 is the Abbe number of the second lens at a wavelength of 587.6 nm, V3 is the Abbe number of the third lens at a wavelength of 587.6 nm, and V4 is the Abbe number of the fourth lens at a wavelength of 587.6 nm) In Article 1 or Article 2, The above second lens is an electronic device satisfying the following [Equation 7]. 0.12mm < CT2 < 0.2mm (Here, CT2(center Thickness 2) is the center thickness of the second lens) In any one of paragraphs 1 to 3, The above optical system is an electronic device satisfying the following [Equation 8]. [Equation 8] 0.9 < TTL / f < 1.2 (Here, TTL (total track length) is the distance from the subject side surface of the first lens to the image plane, and f (focal length) is the combined focal length of the optical system.) In any one of paragraphs 1 to 4, An electronic device in which the subject side surface of the first lens is formed convexly toward the subject side. In any one of paragraphs 1 to 5, The above optical system is an electronic device satisfying the following [Equation 9]. [Equation 9] N1 ≤ 1.6, N5 ≤ 1.6 (Here, N1 is the refractive index of the first lens at a wavelength of 587.6 nm, and N5 is the refractive index of the fifth lens at a wavelength of 587.6 nm) In any one of paragraphs 1 through 6, The above second lens is an electronic device satisfying the following [Equation 10]. [Equation 10] N2 1.6 (Here, N2 is the refractive index of the second lens at a wavelength of 587.6 nm) In any one of paragraphs 1 through 7, The above optical system is an electronic device satisfying the following [Equation 11]. [Equation 11] SD / TTL ≤ 0.8 (Here, SD is the distance from the subject side surface of the first lens to the image side surface of the fifth lens, and TTL is the distance from the subject side surface of the first lens to the image plane.) In any one of paragraphs 1 through 8, The above optical system is an electronic device satisfying the following [Equation 12] which represents the brightness of the above optical system. [Equation 12] f / EPD ≤ 2.5 (Here, f(focal length) is the effective focal length of the optical system, and EPD(entrance pupil diameter) is the entrance pupil of the optical system) In any one of paragraphs 1 through 9, An electronic device having at least one of the subject side surface or image side surface of the fourth lens has an inflection shape, and at least one of the subject side surface or image side surface of the fifth lens has an inflection shape. In any one of paragraphs 1 through 10, It further includes a display (201), The above display is an electronic device comprising a receiving portion including at least one of a through hole or recess in which at least a portion of the optical system is received. In Article 11, An electronic device in which the first lens is disposed within the receiving portion, and the second lens is located in part or in whole outside the receiving portion. In Article 11 or Article 12, The optical system further includes a stop positioned around the subject side of the first lens and a lens barrel (10) supporting the edge of the lens group, and The above aperture is an electronic device coupled to the display or coupled to the lens barrel adjacent to the above receiving portion. In Article 13, An electronic device in which the diameter (D) of the portion of the lens barrel facing the subject side of the first lens is smaller than the diameter of the receiving portion. In the optical system (300, 400, 500, 600, 700, 800, 900), A lens group (G) comprising: a first lens (L1) having positive refractive power arranged along an optical axis (OI) in a direction from the object (O) side toward the image (I) side; a second lens (L2) having negative refractive power; a third lens (L3) having negative refractive power; a fourth lens (L4) having refractive power and formed such that at least one of the object side surface (S9) or the image side surface (S10) includes at least one inflection point; and a fifth lens (L5) having negative refractive power and formed such that the object side surface (S11) and the image side surface (S12) include at least one inflection point; An image sensor (IS) including an image plane (img) on ​​which an image (I) is formed; and An optical system satisfying the following [Equation 1], [Equation 2], [Equation 3], [Equation 4] and [Equation 5]. [Equation 1] TTL / IH < 0.68 [Equation 2] Thi_L1 / (Thi_Lmax) > 1.3 [Equation 3] Thi_L1 / (Thi_Lmin) > 3.0 [Equation 4] Thi_L1 / SD > 0.22 [Equation 5] 0.85 ≤ L1_ED / L2_ED ≤ 1.25 (Here, TTL (total track length) in [Equation 1] is the distance from the subject side surface (S3) of the first lens to the image plane, IH is the effective diagonal length of the image plane, Thi_L1 in [Equation 2] is the center thickness of the first lens, Thi_Lmax is the center thickness of the lens with the thickest center thickness among the lenses excluding the first lens, Thi_Lmin in [Equation 3] is the center thickness of the lens with the thinnest center thickness among the lenses excluding the first lens, SD (surface distance) in [Equation 4] is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface of the lens furthest from the subject side among the lenses, L1_ED in [Equation 5] is the effective aperture of the first lens, and L2_ED is the effective aperture of the second lens)

Images