Optical system and electronic device comprising same

Abstract

According to an embodiment of the present disclosure, an electronic device may be provided. The electronic device may comprise an optical system. The optical system may comprise: a first lens group including at least two lenses arranged along the optical axis in a direction from the object side to the image side; a first optical member configured to change a path of light having passed through the first lens group; a second lens group disposed to receive light having passed through the first optical member, and including at least one lens; a second optical member configured to change a path of light having passed through the second lens group; and an image sensor including an image plane on which an image of light having passed through the second optical member is formed. The second lens group may satisfy [Expression 1]: AG_Abe > 58, where AG_Abe is an Abbe number of one lens among the at least one lens included in the second lens group.

Description

Optical system and electronic device including the same

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

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

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

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

[0005] According to an 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 first lens group comprising at least two lenses arranged along a light axis in a direction from the subject side toward the image side; a first optical member configured to change the path of light passing through the first lens group; a second lens group disposed to receive light passing through the first optical member and comprising at least one lens; a second optical member configured to change the path of light passing through the second lens group; and an image sensor comprising an image plane on which an image of light passing through the second optical member is formed. The second lens group may satisfy the following [Equation 1].

[0006] [Equation 1]

[0007] AG_Abe> 58

[0008] (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

[0009] According to an embodiment of the present disclosure, an optical system may be provided. The optical system may include a first lens group comprising at least two lenses arranged along a light axis in a direction from the subject side toward the image side; a first optical member configured to change the path of light passing through the first lens group; a second lens group disposed to receive light passing through the first optical member and comprising at least one lens; a second optical member configured to change the path of light passing through the second lens group; and an image sensor comprising an image plane on which an image of light passing through the second optical member is formed. The second lens group may satisfy the following [Equation 1].

[0010] [Equation 1]

[0011] AG_Abe> 58

[0012] (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

[0013] 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.

[0014] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment of the present disclosure.

[0015] FIG. 2 is a block diagram illustrating a camera module according to one embodiment of the present disclosure.

[0016] FIG. 3 is a front perspective view of an electronic device according to one embodiment of the present disclosure.

[0017] FIG. 4 is a rear perspective view of an electronic device according to one embodiment of the present disclosure.

[0018] FIG. 5a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0019] FIG. 5b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0020] FIG. 5c is a graph showing the spherical aberration of the lens assembly of FIG. 5a according to one embodiment of the present disclosure.

[0021] FIG. 5d is a graph showing the astigmatism of the lens assembly of FIG. 5a according to one embodiment of the present disclosure.

[0022] FIG. 5e is a graph showing the distortion rate of the lens assembly of FIG. 5a according to one embodiment of the present disclosure.

[0023] FIG. 5f is a graph showing the spherical aberration of the lens assembly of FIG. 5b according to one embodiment of the present disclosure.

[0024] FIG. 5g is a graph showing the astigmatism of the lens assembly of FIG. 5b according to one embodiment of the present disclosure.

[0025] FIG. 5h is a graph showing the distortion rate of the lens assembly of FIG. 5b according to one embodiment of the present disclosure.

[0026] FIG. 6a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0027] FIG. 6b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0028] FIG. 6c is a graph showing the spherical aberration of the lens assembly of FIG. 6a according to one embodiment of the present disclosure.

[0029] FIG. 6d is a graph showing the astigmatism of the lens assembly of FIG. 6a according to one embodiment of the present disclosure.

[0030] FIG. 6e is a graph showing the distortion rate of the lens assembly of FIG. 6a according to one embodiment of the present disclosure.

[0031] FIG. 6f is a graph showing the spherical aberration of the lens assembly of FIG. 6b according to one embodiment of the present disclosure.

[0032] FIG. 6g is a graph showing the astigmatism of the lens assembly of FIG. 6b according to one embodiment of the present disclosure.

[0033] FIG. 6h is a graph showing the distortion rate of the lens assembly of FIG. 6b according to one embodiment of the present disclosure.

[0034] FIG. 7a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0035] FIG. 7b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0036] FIG. 7c is a graph showing the spherical aberration of the lens assembly of FIG. 7a according to one embodiment of the present disclosure.

[0037] FIG. 7d is a graph showing the astigmatism of the lens assembly of FIG. 7a according to one embodiment of the present disclosure.

[0038] FIG. 7e is a graph showing the distortion rate of the lens assembly of FIG. 7a according to one embodiment of the present disclosure.

[0039] FIG. 7f is a graph showing the spherical aberration of the lens assembly of FIG. 7b according to one embodiment of the present disclosure.

[0040] FIG. 7g is a graph showing the astigmatism of the lens assembly of FIG. 7b according to one embodiment of the present disclosure.

[0041] FIG. 7h is a graph showing the distortion rate of the lens assembly of FIG. 7b according to one embodiment of the present disclosure.

[0042] FIG. 8a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0043] FIG. 8b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0044] FIG. 8c is a graph showing the spherical aberration of the lens assembly of FIG. 8a according to one embodiment of the present disclosure.

[0045] FIG. 8d is a graph showing the astigmatism of the lens assembly of FIG. 8a according to one embodiment of the present disclosure.

[0046] FIG. 8e is a graph showing the distortion rate of the lens assembly of FIG. 8a according to one embodiment of the present disclosure.

[0047] FIG. 8f is a graph showing the spherical aberration of the lens assembly of FIG. 8b according to one embodiment of the present disclosure.

[0048] FIG. 8g is a graph showing the astigmatism of the lens assembly of FIG. 8b according to one embodiment of the present disclosure.

[0049] FIG. 8h is a graph showing the distortion rate of the lens assembly of FIG. 8b according to one embodiment of the present disclosure.

[0050] FIG. 9a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0051] FIG. 9b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0052] FIG. 9c is a graph showing the spherical aberration of the lens assembly of FIG. 9a according to one embodiment of the present disclosure.

[0053] FIG. 9d is a graph showing the astigmatism of the lens assembly of FIG. 9a according to one embodiment of the present disclosure.

[0054] FIG. 9e is a graph showing the distortion rate of the lens assembly of FIG. 9a according to one embodiment of the present disclosure.

[0055] FIG. 9f is a graph showing the spherical aberration of the lens assembly of FIG. 9b according to one embodiment of the present disclosure.

[0056] FIG. 9g is a graph showing the astigmatism of the lens assembly of FIG. 9b according to one embodiment of the present disclosure.

[0057] FIG. 9h is a graph showing the distortion rate of the lens assembly of FIG. 9b according to one embodiment of the present disclosure.

[0058] FIG. 10a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0059] FIG. 10b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0060] FIG. 10c is a graph showing the spherical aberration of the lens assembly of FIG. 10a according to one embodiment of the present disclosure.

[0061] FIG. 10d is a graph showing the astigmatism of the lens assembly of FIG. 10a according to one embodiment of the present disclosure.

[0062] FIG. 10e is a graph showing the distortion rate of the lens assembly of FIG. 10a according to one embodiment of the present disclosure.

[0063] FIG. 10f is a graph showing the spherical aberration of the lens assembly of FIG. 10b according to one embodiment of the present disclosure.

[0064] FIG. 10g is a graph showing the astigmatism of the lens assembly of FIG. 10b according to one embodiment of the present disclosure.

[0065] FIG. 10h is a graph showing the distortion rate of the lens assembly of FIG. 10b according to one embodiment of the present disclosure.

[0066] FIG. 11a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0067] FIG. 11b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0068] FIG. 11c is a graph showing the spherical aberration of the lens assembly of FIG. 11a according to one embodiment of the present disclosure.

[0069] FIG. 11d is a graph showing the astigmatism of the lens assembly of FIG. 11a according to one embodiment of the present disclosure.

[0070] FIG. 11e is a graph showing the distortion rate of the lens assembly of FIG. 11a according to one embodiment of the present disclosure.

[0071] FIG. 11f is a graph showing the spherical aberration of the lens assembly of FIG. 11b according to one embodiment of the present disclosure.

[0072] FIG. 11g is a graph showing the astigmatism of the lens assembly of FIG. 11b according to one embodiment of the present disclosure.

[0073] FIG. 11h is a graph showing the distortion rate of the lens assembly of FIG. 11b according to one embodiment of the present disclosure.

[0074] FIG. 12a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0075] FIG. 12b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0076] FIG. 12c is a graph showing the spherical aberration of the lens assembly of FIG. 12a according to one embodiment of the present disclosure.

[0077] FIG. 12d is a graph showing the astigmatism of the lens assembly of FIG. 12a according to one embodiment of the present disclosure.

[0078] FIG. 12e is a graph showing the distortion rate of the lens assembly of FIG. 12a according to one embodiment of the present disclosure.

[0079] FIG. 12f is a graph showing the spherical aberration of the lens assembly of FIG. 12b according to one embodiment of the present disclosure.

[0080] FIG. 12g is a graph showing the astigmatism of the lens assembly of FIG. 12b according to one embodiment of the present disclosure.

[0081] FIG. 12h is a graph showing the distortion rate of the lens assembly of FIG. 12b according to one embodiment of the present disclosure.

[0082] FIG. 13a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0083] FIG. 13b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure.

[0084] FIG. 13c is a graph showing the spherical aberration of the lens assembly of FIG. 13a according to one embodiment of the present disclosure.

[0085] FIG. 13d is a graph showing the astigmatism of the lens assembly of FIG. 13a according to one embodiment of the present disclosure.

[0086] FIG. 13e is a graph showing the distortion rate of the lens assembly of FIG. 13a according to one embodiment of the present disclosure.

[0087] FIG. 13f is a graph showing the spherical aberration of the lens assembly of FIG. 13b according to one embodiment of the present disclosure.

[0088] FIG. 13g is a graph showing the astigmatism of the lens assembly of FIG. 13b according to one embodiment of the present disclosure.

[0089] FIG. 13h is a graph showing the distortion rate of the lens assembly of FIG. 13b according to one embodiment of the present disclosure.

[0090] Throughout the attached drawings, similar parts, configurations, and / or structures may be assigned similar reference numbers.

[0091] The following description, with reference to the attached drawings, is provided to facilitate a comprehensive understanding of various embodiments of the present invention as defined by the claims and their equivalents. While the following description includes various specific details to aid understanding, they should be considered merely as examples. Accordingly, those skilled in the art will recognize that various changes and modifications to the various embodiments described herein may be made without departing from the scope and spirit of the present disclosure. Additionally, descriptions of known functions and configurations may be omitted for the sake of clarity and brevity.

[0092] The terms and words used in the following description and claims are not limited to their bibliographic meanings and are used by the inventor merely to ensure a clear and consistent understanding of the disclosure. Accordingly, it will be apparent to those skilled in the art that the following description of various embodiments of the invention is provided for illustrative purposes only and not to limit the invention as defined by the appended claims and their equivalents.

[0093] The singular forms "a," "an," and "the" should be understood to include multiple referents unless the context clearly indicates otherwise. Thus, for example, a reference to "part surfaces" includes a reference to one or more of these surfaces.

[0094] FIG. 1 is a block diagram of an electronic device in a network environment according to one embodiment of the present disclosure.

[0095] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or with 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)).

[0096] 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.

[0097] 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 is performed, 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.

[0098] 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).

[0099] 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).

[0100] 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).

[0101] 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.

[0102] 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 hall area-gram 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.

[0103] 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) connected directly or wirelessly to the electronic device (101).

[0104] 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.

[0105] 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.

[0106] 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).

[0107] 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.

[0108] 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.

[0109] 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).

[0110] 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.

[0111] 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 (global 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 (104) 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).

[0112] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. 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 in the electronic device (101), external electronic device (e.g., electronic device (104)), or network system (e.g., 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.

[0113] An antenna module (197) can transmit a signal or power to an external source (e.g., an external electronic device) or receive it from an external source. According to one embodiment, the antenna module (197) 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). A signal or power may be transmitted or received between the communication module (190) and an external electronic device through the selected at least one antenna. 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).

[0114] 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.

[0115] 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.

[0116] 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.

[0117] In the following detailed description, the length direction, width direction, and / or thickness direction of the electronic device may be mentioned, and the length direction may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and / or the thickness direction as the 'Z-axis direction'. In one embodiment, regarding the direction in which the component is oriented, 'negative / positive (- / +)' may be mentioned together with the Cartesian coordinate system illustrated in the drawings. For example, the front of the electronic device or housing may be defined as the 'face facing the +Z direction', and the rear may be defined as the 'face facing the -Z direction'. In one embodiment, the side of the electronic device or housing may include an area facing the +X direction, an area facing the +Y direction, an area facing the -X direction, and / or an area facing the -Y direction. Also, in one embodiment, the 'X-axis direction' may mean both the '-X direction' and the '+X direction'. It should be noted that this is based on the Cartesian coordinate system described in the drawings for the sake of brevity of description, and that the description of these directions or components does not limit the embodiments of the present disclosure. For example, the direction in which the aforementioned front or rear faces may vary depending on whether the electronic device is unfolded or folded, and the aforementioned direction may be interpreted differently depending on the user's gripping habits.

[0118] FIG. 2 is a block diagram (200) illustrating a camera module (280) (e.g., camera module (180) of FIG. 1) according to one embodiment of the present disclosure. Referring to FIG. 2, the camera module (280) may include a lens assembly (210), a flash (220), an image sensor (230), an image stabilizer (240), a memory (250) (e.g., a buffer memory), or an image signal processor (260). In one embodiment, the lens assembly (210) may include an image sensor (230). The lens assembly (210) may collect light emitted from a subject that is the target of image capture. The lens assembly (210) may include one or more lenses. According to one embodiment, the camera module (280) may include a plurality of lens assemblies (210). In this case, the camera module (280) may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies (210) may have the same lens properties (e.g., angle of view, focal length, autofocus, F-number, or optical zoom), or at least one lens assembly may have one or more lens properties different from the lens properties of the other lens assemblies. The lens assembly (210) may include, for example, a wide-angle lens or a telephoto lens.

[0119] 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 a lens assembly (210) 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.

[0120] The image stabilizer (240) may move at least one lens or image sensor (230) included in the lens assembly (210) in a specific direction in response to the movement of the camera module (280) or the electronic device (101) containing it, or control the operational characteristics of the image sensor (230) (e.g., adjusting read-out timing). 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 such movement of the camera module (280) 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 (280). 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.

[0121] The image signal processor (260) can perform one or more image processing operations on an image obtained through the image sensor (230) or an image stored in memory (250). The above one or more image processing methods 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) may perform control (e.g., exposure time control, or readout timing control, etc.) over at least one of the components included in the camera module (280) (e.g., image sensor (230)). The 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 (280) (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 a processor (e.g., of FIG. 1 It may be configured as at least part of the processor (120) or as a separate processor that operates independently of the processor (120). If the image signal processor (260) is configured as 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 additional image processing by the processor (120).

[0122] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1) may include a plurality of camera modules (280) each having different attributes or functions. In this case, for example, at least one of the plurality of camera modules (280) 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 (280) may be a front camera and at least another may be a rear camera.

[0123] FIG. 3 is a front perspective view of an electronic device according to one embodiment of the present disclosure. FIG. 4 is a rear perspective view of an electronic device according to one embodiment of the present disclosure.

[0124] 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.

[0125] 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).

[0126] 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.

[0127] 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.

[0128] 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.

[0129] 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).

[0130] 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).

[0131] 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.

[0132] 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).

[0133] According to one embodiment, the second camera module (212) may be placed inside the housing (210) such that the lens is exposed to the second side (210B) (or rear) of the electronic device (101). For example, the camera module (212) may be electrically connected to a printed circuit board (e.g., the printed circuit board (240a) of FIG. 4). For example, the flash (213) may include a light-emitting diode or a xenon lamp. In one embodiment, one or more lenses (infrared camera, wide-angle and telephoto lenses) and image sensors may be placed on one side of the electronic device (101). In one embodiment, the flash (213) may emit infrared light. For example, infrared light emitted from the flash (213) and reflected by a subject may be received through a sensor module (not shown) placed on the second side (210B) of the housing (210). An electronic device (101) or a processor (e.g., the processor (180) of FIG. 1) can detect depth information of a subject based on the time when infrared light is received from the sensor module.

[0134] 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).

[0135] 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.

[0136] 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).

[0137] 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.

[0138] 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.

[0139] FIG. 5a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 5b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 5c is a graph showing spherical aberration of the lens assembly of FIG. 5a according to one embodiment of the present disclosure. FIG. 5d is a graph showing astigmatism of the lens assembly of FIG. 5a according to one embodiment of the present disclosure. FIG. 5e is a graph showing the distortion rate of the lens assembly of FIG. 5a according to one embodiment of the present disclosure. FIG. 5f is a graph showing spherical aberration of the lens assembly of FIG. 5b according to one embodiment of the present disclosure. FIG. 5g is a graph showing astigmatism of the lens assembly of FIG. 5b according to one embodiment of the present disclosure. FIG. 5h is a graph showing the distortion rate of the lens assembly of FIG. 5b according to one embodiment of the present disclosure.

[0140] Referring to FIGS. 5a and 5b, in one embodiment, an electronic device (e.g., the electronic device (101) of FIGS. 1, 3 and 4) may include an optical system (300). The optical system (300) according to one embodiment of the present disclosure may comprise an optical device such as a camera mounted on the electronic device (101) (e.g., the camera module (180) of FIG. 1, the camera module (280) of FIG. 2, the camera module (205) of FIG. 3 and / or the camera module (212) of FIG. 4). For example, the configuration of the optical system (300) may be wholly or partially identical or similar to the configuration of the camera module (280) of FIG. 2.

[0141] According to one embodiment, the optical system (300) may include a first lens group (G1), a second lens group (G2), an image sensor (IS), optical members (M1, M2) and / or an aperture (sto). According to one embodiment, the optical system (300) may be positioned on a ray axis (OI) extending from the direction where an object (O) is located to the image plane (img) of the image sensor (IS) where an image (I) is formed. For example, the lenses (L1, L2, L3, L4), the aperture (sto), the optical members (M1, M2) and / or the image sensor (IS) may be substantially aligned on the ray axis (OI).

[0142] According to one embodiment, the first lens group (G1) may include at least two lenses arranged along the ray axis (OI). According to one embodiment, the first lens group (G1) may include a first lens (L1), a second lens (L2), and a third lens (L3) (see FIG. 5a, FIG. 5b, FIG. 6a, FIG. 6b, FIG. 7a, FIG. 7b, FIG. 8a, FIG. 8b, FIG. 9a and FIG. 9b). For example, the centers of the lenses included in the first lens group (G1) (e.g., L1, L2, L3) may be positioned on the ray axis (OI). However, in the present disclosure, the number of lenses included in the first lens group (G1) is not limited and may further include additional lenses aligned with the ray axis (OI) together with the first lens (L1), the second lens (L2), and the third lens (L3). For example, the plurality of lenses included in the first lens group (G1) may be formed of synthetic resin (e.g., plastic) or glass material. For example, the direction in which the plurality of lenses (L1, L2, L3) included in the first lens group (G1) are arranged may be referred to as the first axis direction, and the first axis direction may be parallel to a part of the ray axis (OI) and may be understood as a part of the ray axis (OI).

[0143] According to one embodiment, the second lens group (G2) may include at least one lens(s). According to one embodiment, the second lens group (G2) may include a fourth lens (L4). According to one embodiment, the second lens group (G2) may include a fifth lens (L5) (see FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b). However, the number of lenses included in the second lens group (G2) is not limited and may include a single lens or additionally include multiple lenses. For example, the lens(s) included in the second lens group (G2) may be formed of a synthetic resin (e.g., plastic) or a glass material. According to one embodiment, all or part of the lens(s) included in the second lens group (G2) may be formed of a glass material. According to one embodiment, the upper and / or lower unused edges of at least one lens included in the second lens group (G2) may be cut (e.g., D-cut). For example, at least one lens included in the second lens group (G2) may be processed (e.g., cut or trimmed) into a shape suitable for being accommodated in a limited mounting space within a camera module (e.g., camera module (180) of FIG. 1, camera module (280) of FIG. 2, camera module (205) of FIG. 3 and / or camera module (212) of FIG. 4) or an electronic device (e.g., electronic device (101) of FIG. 1, FIG. 3 and FIG. 4). For example, when the lens material is glass, the manufacturing difficulty and mass production capabilities may be superior when implementing a cut (e.g., D-cut) shape compared to when the lens material is synthetic resin. For example, when the lens material is glass, deformation due to external factors such as heat and humidity may be less compared to when the lens material is synthetic resin.

[0144] In the present disclosure, the object side may indicate the direction in which the object (O) is located, and the image side may indicate the direction in which the image plane (img) (or image sensor (IS)) where the image (I) is formed is located. In the following description, for example, lenses (L1, L2, L3, L4), optical members (M1, M2) and / or filter members (F) may each include an 'object side' which is a surface facing the object (O) and an 'image side' which is a surface facing the image plane (img) where the image (I) is formed.

[0145] According to one embodiment (see FIG. 5a, FIG. 5b, FIG. 6a, FIG. 6b, FIG. 7a, FIG. 7b, FIG. 8a, FIG. 8b, FIG. 9a and FIG. 9b), the first lens (L1) may include a subject side surface (S2) and an image side surface (S3). For example, the second lens (L2) may include a subject side surface (S4) and an image side surface (S5). For example, the third lens (L3) may include a subject side surface (S6) and an image side surface (S7). For example, the first optical member (M1) may include a subject side surface (S8) and an image side surface (S9). For example, the fourth lens (L4) may include a subject side surface (S10) and an image side surface (S11). For example, the second optical member (M2) may include a subject side surface (S12) and an upper side surface (S13). For example, the filter member (F) may include a subject side surface (S14) and an upper side surface (S15).

[0146] According to one embodiment, at least some of the lenses (L1, L2, L3) of the first lens group (G1) may have at least one of the subject side surface or image side surface formed as an aspheric surface. For example, by forming the surfaces of the lenses (L1, L2, L3) as aspheric surfaces, spherical aberration that may occur in the lenses can be suppressed, coma in the periphery of the image sensor (IS) 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 (IS) can be reduced.

[0147] In the following description regarding the lenses, the shapes of the subject side surface, which is the surface facing the subject (O) side, and / or the image side surface, which is the surface facing the image sensor (IS) (or image plane (img)), of the lenses (L1, L2, L3, L4) of the first lens group (G1) or the second lens group (G2) may be described using the terms 'concave' or 'convex'. For example, 'the subject side surface is concave (toward the subject side)' may describe a shape in which the center of the radius of curvature of the subject side surface is located on the subject (O) side. 'The subject side surface is convex (toward the subject side)' may describe a shape in which the center of the radius of curvature of the subject side surface is located on the image sensor (IS) side. In the present disclosure, a surface of a lens may include a paraxial region (or chief area) around a point intersecting the ray axis (OI) and a marginal area around or spaced apart from the paraxial region. In the present disclosure, references to the shape of a surface of a lens may be descriptions of the shape of the paraxial region of the surface of the lens. For example, even if one surface of a lens (e.g., a first lens (L1)) (the paraxial region of the said surface) is described as having a convex shape, the margin of said surface of the lens may be concave. Likewise, even if one surface of a lens (the paraxial region of said surface) is described as having a concave shape, the margin of said surface of the lens may be convex.

[0148] According to one embodiment, in one embodiment, the first lens (L1) may have positive refractive power as the lens closest to the subject (O) side (or the first lens from the subject side). For example, the first lens (L1) may have a subject side surface (S2) that is convex toward the subject (O) side. For example, the shape of the subject side surface (S2) of the first lens (L1) that is convex toward the subject (O) side can suppress the increase in spherical aberration due to the increase in aperture. According to one embodiment, the subject side surface (S2) and / or image side surface (S3) of the first lens (L1) may be formed as an aspherical surface.

[0149] According to one embodiment, in one embodiment, the second lens (L2) is a lens that is secondarily adjacent to the subject (O) side (or secondly positioned from the subject (O) side) and may have positive or negative refractive power. According to one embodiment, the subject side surface (S4) and / or image side surface (S5) of the second lens (L2) may be formed as an aspherical surface.

[0150] According to one embodiment, in one embodiment, the third lens (L3) is a lens that is thirdly adjacent to the subject (O) side (or thirdly positioned from the subject (O) side) and may have positive or negative refractive power. According to one embodiment, the subject side surface (S6) and / or image side surface (S7) of the third lens (L3) may be formed as an aspherical surface.

[0151] According to one embodiment, in one embodiment, the fourth lens (L4) of the second lens group (G2) is a lens positioned between the first optical member (M1) and the second optical member (M2), or the lens closest to the image (I) side, and may have a positive or negative refractive power. According to one embodiment, the subject side surface (S10) and / or image side surface (S11) of the fourth lens (L4) may be formed as an aspherical surface.

[0152] In one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or its processor (e.g., the processor (120) of FIG. 1) may be configured to perform a focusing (e.g., auto focusing (AF)) operation by moving at least one lens (e.g., the fourth lens (L4)) of the second lens group (G2) in a second axis direction passing through the center of the lens (e.g., the fourth lens (L4)). Here, the second axis direction may mean a virtual axis (or axis direction) passing through the center of the lens(s) (e.g., the fourth lens (L4)) included in the second lens group (G2) and may be parallel to a part of the ray axis (OI). For example, the second axis direction may form a non-zero angle with the first axis direction in which a plurality of lenses (L1, L2, L3) included in the first lens group (G1) are arranged. When the fourth lens (L4) of the second lens group (G2) is moved in the direction of the second axis for focus adjustment, the lenses (L1, L2, L3) and optical members (M1, M2) of the first lens group (G1) may be maintained in a stationary state. When focusing is performed by moving the second lens group (G2), it may be easier to set the focus distance compared to when moving the first lens group (G2). For example, when the distance to the subject is set to be the same (e.g., 40 cm), the focus distance (D1) when only the second lens group (G2) is moved may be shorter than the focus distance when only the first lens group (G1) is moved.

[0153] In the present disclosure, the focal shift distance (e.g., D1 in FIG. 5a, FIG. 5b, FIG. 6a, FIG. 6b, FIG. 7a, FIG. 7b, FIG. 8a, FIG. 8b, FIG. 9a, FIG. 9b, FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b) may mean a straight distance along the second axis direction through which at least one lens of the second lens group (G2) (e.g., the fourth lens (L4) of the optical system (300, 400, 500, 600, 700) or the fifth lens (L5) of the optical system (800, 900, 1000, 1100)) can be moved for focus adjustment. Referring to FIGS. 5a, 6a, 7a, 8a, 9a, 10a, 11a, 12a, and 13a, in one embodiment, the minimum shooting distance of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) is a first distance (e.g., 40 cm), and the first center position of the lens subject side surface of the second lens group (G2) (e.g., the subject side surface of the fourth lens (L4) (S10) or the subject side surface of the fifth lens (L5) (S12)) may be indicated as A1. Here, the center position may mean a point where the center of one surface of the corresponding lens is located on the second axis direction, which is the direction in which at least one lens of the second lens group moves for focus adjustment. FIGS. 5b, FIGS. 6b, FIGS. Referring to FIGS. 7b, FIGS. 8b, FIGS. 9b, FIGS. 10b, FIGS. 11b, FIGS. 12b and FIGS. 13b, in one embodiment, the minimum shooting distance of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) is a second distance (e.g., infinity), and the second center position of the lens subject side of the second lens group (G2) (e.g., the subject side of the fourth lens (L4) (S10) or the subject side of the fifth lens (L5) (S12)) may be indicated as A2.The above focal shift distance (D1) can be understood as the straight-line distance between the first center position (A1) and the second center position (A2) on the second axis direction, which is the direction in which at least one lens of the second lens group moves for focus adjustment.

[0154] According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or a processor (e.g., the processor (120) of FIG. 1) may be configured to perform optical image stabilization (OIS) by moving at least one of the lenses (L1, L2, L3, L4) in at least one direction perpendicular to the first direction in which the plurality of lenses (L1, L2, L3, L4) are arranged (e.g., left-right direction and up-down direction). According to one embodiment, when at least one of the lenses (L1, L2, L3, L4) is moved in the first direction and / or in at least one direction perpendicular to the first direction (e.g., left-right direction and up-down direction), the image sensor (IS) and / or optical member (M1, M2) may be maintained in a stationary state. However, the configuration that is moved to perform focus adjustment (e.g., autofocus (AF)) and / or optical image stabilization (OIS) operations is not limited to lenses (L1, L2, L3, L4), and may be performed by moving an image sensor (IS) and / or optical members (M1, M2). According to one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or a processor (e.g., the processor (120) of FIG. 1) may be configured to perform focus adjustment (e.g., autofocus (AF)) operations by moving the image sensor (IS) and / or optical members (M1, M2) in a first direction in which the plurality of lenses (L1, L2, L3, L4) are arranged, and / or to perform optical image stabilization (OIS) operations by moving them in at least one direction perpendicular to the first direction (e.g., left-right direction and up-down direction).

[0155] According to one embodiment, the image sensor (IS) may include an imaging plane (img) which receives at least a portion of the light focused through an aperture (sto) and / or lenses (L1, L2, L3, L4) and forms an image. According to one embodiment, the image sensor (IS) is a sensor mounted on a circuit board or the like and positioned in alignment with an optical axis, and may respond to light. The image sensor (IS) 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 (IS) is not limited thereto and may include, for example, various devices that convert an image of a subject into an electrical image signal. The image sensor (IS) 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.

[0156] According to one embodiment, the image plane (img) of the image sensor (IS) may be arranged to form a first axis direction or a non-zero angle (e.g., about 90 degrees) in which a plurality of lenses (L1, L2, L3 and / or L4) of the lens group (G1) are arranged. For example, the image plane (img) of the image sensor (IS) may be substantially parallel to or at a non-zero angle to the second axis direction in which at least one lens included in the second lens group (G2) moves for a focus adjustment operation. In the embodiment of FIG. 5, however, the arrangement of the image sensor (IS) in the present disclosure is not limited and may be set and changed according to factors such as the magnification of the telephoto lens to be implemented in the optical system (300) and the design of the light path using the lenses (L1, L2, L3, L4) and optical members (M1, M2).

[0157] According to one embodiment, the optical members (M1, M2) may include a first optical member (M1) disposed between a first lens group (G1) and a second lens group (G2), and a second optical member (M2) disposed between the second lens group (G2) and an image sensor (IS). According to one embodiment, the first optical member (M1) may be a reflective member configured and disposed to refract and / or reflect light passing through the first lens group (G1) and transmit it to the second lens group (G1). For example, the first optical member (M1) may be configured to change the path of light at least once. According to one embodiment, the second optical member (M2) may be a reflective member configured and disposed to refract and / or reflect light passing through the second lens group (G2) and transmit it to the image sensor (IS). For example, the second optical member (M2) may be configured to change the path of light at least once. According to an example embodiment, the optical members (M1, M2) may include at least one mirror and / or at least one prism configured to refract and / or reflect light. According to one embodiment, the optical system (300) may implement a folded optical system (or folded camera) by including the optical members (M1, M2). For example, by providing the optical members (M1, M2), the optical system (300) may secure the focal length of the optical system (300) in a limited space according to the miniaturization and / or slimming of the electronic device (e.g., the electronic device (101) of FIGS. 3 and 4).

[0158] For example, when including a high-performance, large-sized image sensor (IS), the quality of the captured image of an electronic device (e.g., the electronic device (101) of FIG. 3 and FIG. 4) may be improved. However, as the image sensor (IS) becomes larger, the thickness of the electronic device may increase due to the length or width of the image sensor (IS), and the corresponding optical system (300) may be difficult to mount on the slimmed-down electronic device (101). According to one embodiment, the optical system (300) may secure design freedom regarding the arrangement direction of the lenses (L1, L2, L3, L4) or the placement direction of the image sensor (IS) by including at least one optical member (M1, M2), thereby allowing the image sensor (IS) to be easily mounted on a miniaturized and / or slimmed-down electronic device (101) even if it becomes larger.

[0159] According to one embodiment, the aperture (sto) may substantially define or limit the area where light is incident on the first optical member (M1) or the second lens group (G2). According to one embodiment, the aperture (sto) may be positioned at the edge of the subject side surface (S8) of the first optical member (M1) or around the subject side surface (S8). However, the position of the aperture (sto) is not limited and may be positioned, for example, to limit the area where light is incident on one of the lenses (L1, L2, L3) of the first lens group (G1).

[0160] According to one embodiment, the optical system (300) may further include a filter member (F). According to one embodiment, the filter member (F) may include a subject side surface (S13) and an image side surface (S14). For example, the filter member (F) may block light in a wavelength band (e.g., infrared) that is not visible to the user's naked eye but is detected by a film or image sensor (IS). For example, in a lens assembly or electronic device (101) intended 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 member (F) may be aligned with a plurality of lenses (L1, L2, L3, L4), an aperture (sto), and / or an image sensor (IS) along the ray axis (OI). For example, the filter member (F) may be aligned with a second lens group (G2) and / or an image sensor (IS) along the ray axis (OI). In one embodiment, the filter member (F) may be implemented by a coating material disposed on the lens surface of any one of the lenses (L1, L2, L3, L4).

[0161] Hereinafter, [Equation 1] to [Equation 4] for implementing a telephoto optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) according to one embodiment, which is miniaturized and has a short distance to a subject (or minimum shooting distance) capable of close-range shooting, will be described. For example, in a telephoto optical system of a conventional structure, the minimum shooting distance may be about 80 cm to about 1 m, but in a telephoto optical system according to one embodiment of the present disclosure, the minimum shooting distance can be reduced to about 40 cm or less, so the macro shooting function can be improved compared to the conventional structure.

[0162] In the present disclosure, the radius of curvature or thickness, effective focal length (EFL), optical system length (OTTL), air gap, etc. of the lenses (L1, L2, L3, L4) may all have units of mm unless specifically noted. Additionally, the radius of the lenses (L1, L2, L3, L4 and / or L5) may be measured in a direction substantially perpendicular from the point of intersection with the ray axis (OI), and the radius of curvature or thickness, effective focal length (EFL), optical system length (OTTL), air gap, etc. of the lenses (L1, L2, L3, L4) may be measured in a direction parallel to the ray axis (OI) from the point of intersection with the ray axis (OI).

[0163] According to one embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) can satisfy the following [Equation 1].

[0164] [Equation 1]

[0165] AG_Abe > 58

[0166] Here, AG_Abe may be the Abbe number of one of at least one lenses included in the second lens group (G2). According to the embodiments of FIG. 5a, 5b, FIG. 6a, 6b, FIG. 7a, 7b, FIG. 8a, 8b, FIG. 9a and 9b, AG_Abe may be the Abbe number of the fourth lens (G4). According to the embodiments of FIG. 10a, 10b, FIG. 11a, 11b, FIG. 12a, 12b, FIG. 13a and 13b, AG_Abe may be the Abbe number of the fifth lens (G5).

[0167] [Equation 1] may mean that the material of the lens (L4 or L5) of the second lens group (G2) is formed of glass. According to one embodiment, the upper and / or lower unused edges of at least one lens included in the second lens group (G2) may be cut (e.g., D-cut). For example, at least one lens included in the second lens group (G2) may be processed (e.g., cut or trimmed) into a shape suitable for being accommodated in a limited mounting space within a camera module (e.g., camera module (180) of FIG. 1, camera module (280) of FIG. 2, camera module (205) of FIG. 3 and / or camera module (212) of FIG. 4) or an electronic device (e.g., electronic device (101) of FIG. 1, FIG. 3 and FIG. 4). For example, when the lens material is glass, the manufacturing difficulty and mass production capabilities may be superior when implementing a cut (e.g., D-cut) shape compared to when the lens material is synthetic resin. For example, when the lens material is glass, deformation due to external factors such as heat and humidity may be less compared to when the lens material is synthetic resin.

[0168] According to one embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) can satisfy the following [Equation 2].

[0169] [Equation 2]

[0170] 1.5 < EFL / F1 < 3.9

[0171] Here, F1 is the focal length of the first lens (L1), which is the lens closest to the subject (O) among the lenses (L1, L2, L3) of the first lens group (G1), and EFL may be the combined focal length of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100). According to one embodiment, if 'EFL / F1' is about 1.5 or less, which is a lower limit, the manufacturing sensitivity of the first lens (L1) of the first lens group (G1) increases, and the manufacturing difficulty may increase. According to one embodiment, when 'EFL / F1' is greater than the upper limit of about 3.9, the size of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) increases, making it difficult to miniaturize.

[0172] According to one embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) can satisfy the following [Equation 3].

[0173] [Equation 3]

[0174] 5.5 < OTL / 1G_T < 8.8

[0175] Here, OTL is the distance (or shortest distance) from the vertex of the subject side surface (S2) of the first lens (L1) of the first lens group (G1) to the image plane (img) of the image sensor (IS), and 1G_T may be the distance from the vertex of the subject side surface (S2) of the first lens (L1) to the vertex of the image side surface (S7; S9) of the lens closest to the image side among the lenses (L1, L2, L3) of the first lens group (G1). According to the embodiments of FIG. 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b, 9a and 9b, 1G_T may be the distance from the vertex of the subject side surface (S2) of the first lens (L1) to the vertex of the image side surface (S7) of the third lens (L3). According to the embodiments of FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b, 1G_T may be the distance from the vertex of the subject side surface (S2) of the first lens (L1) to the vertex of the image side surface (S9) of the fourth lens (L4).

[0176] According to one embodiment, if 'OTL / 1G_T' is at a lower limit of about 5.5 or less, the size of the first lens group (G1) increases, the size of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) increases, and the design configuration of the electronic device (101) may become difficult and may contradict the requirement for miniaturization of the electronic device (101). According to one embodiment, if 'OTL / 1G_T' is at an upper limit of about 8.8 or more, the sensitivity of the assembly tolerance of the first lens group (G1), optical members (M1, M2), and the second lens group (G2) increases, and the difficulty of manufacturing may increase.

[0177] According to one embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) can satisfy the following [Equation 4].

[0178] [Equation 4]

[0179] 0.1 < EFL / AF_F < 2.0

[0180] Here, AF_F is the focal length of the second lens group (G2), and EFL may be the combined focal length of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100).

[0181] According to one embodiment, when 'EFL / AF_F' is at a lower limit of about 0.1 or less, the focal distance (D1) of the second lens group (G2) for performing the focus adjustment operation increases, and the size of the optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) increases, making it difficult to miniaturize. According to one embodiment, when 'EFL / AF_F' is at an upper limit of about 2.0 or more, the change in optical performance may increase due to the movement of the second lens group (G2) for performing the focus adjustment operation, and image quality degradation may occur due to the focus adjustment operation.

[0182] Table 1 below shows the numerical values ​​of ‘AG_Abe’ of the above-described [Equation 1], ‘EFL / F1’ of the above-described [Equation 2], ‘OTL / 1G_T’ of the above-described [Equation 3], and ‘EFL / AF_F’ of the above-described [Equation 4] for the optical systems (300, 400, 500, 600, 700, 800, 900, 1000, 1100) according to [Example 1] and FIGS. 6a to 13d. Referring to [Table 1], it can be seen that the optical systems (300, 400, 500, 600, 700, 800, 900, 1000, 1100) according to [Examples 1] to [Examples 9] satisfy the above-described [Equation 1] to [Equation 4].

[0183] In addition, [Table 1] below shows the minimum shooting distance (mm) and the focal shift distance (e.g., D1 in FIG. 5a, FIG. 5b, FIG. 6a, FIG. 6b, FIG. 7a, FIG. 7b, FIG. 8a, FIG. 8b, FIG. 9a, FIG. 9b, FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b) (mm). In the present disclosure, the minimum shooting distance may mean the minimum distance from a subject (0) that can be focused and shot with an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) to the subject side (S2) of the first lens (L1). In the present disclosure, the focal shift distance (D1) may mean a straight distance along the second axis direction through which at least one lens of the second lens group (G2) (e.g., the fourth lens (L4) of the optical system (300, 400, 500, 600, 700) or the fifth lens (L5) of the optical system (800, 900, 1000, 1100)) can be moved for focus adjustment.

[0184] AG_AbeEFL / F1OTL / 1G_TEFL / AF_F Minimum shooting distance Focus travel distance Example 1 69.83.00 7.95 1.16 4000 0.94 Example 2 70.42.93 8.19 1.37 4000 0.9 Example 3 62.13.23 8.33 1.12 400 1.05 Example 4 60.31.68 7.97 1.49 4000 0.88 Example 5 60.33.10 8.32 1.16 400 1 Example 6 70.43.15 7.08 1.15 400 1.1 Example 7 70.43.16 7.37 1.39 4000 0.88 Example 870.43.066.591.084000.99 Example 961.63.326.070.374003.01

[0185] In one embodiment, the optical system (300) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.116, and an overall length (OTTL) of about 28.182. In one embodiment, the optical system (300) may be manufactured to have the specifications exemplified in the following [Table 2]. In [Table 2], surface 1 may be a measured value of the air gap. In [Table 2], surface 'n' (where n is 2 to 7, 10 to 11) may correspond to Sn (where n is 2 to 7, 10 to 11), which is the subject side or image side of the lenses (L1, L2, L3, L4) of the present disclosure. In [Table 2], surfaces '8' and '9' correspond to the subject side surface (S8) and the upper side surface (S9) of the first optical member (M1), and surfaces '12' and '13' may correspond to the subject side surface (S13) and the upper side surface (S13) of the second optical member (M2). In [Table 2], surfaces '14' and '15' may correspond to the subject side surface (S14) and the upper side surface (S15) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0186] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2 * 10.44 18 4 1.54 59 7 6.19 1 1.54 410 56.11 3 * -4.74 338 1.19 60 34 * -7.66 24 20.30000 -4.63 8 1.574 80 33.56 5 * 4.19 17 50.05000 6 * 3.45 39 10.45 45 25 1.70 6 1.68 0 42 18.15 7 * 3.61 92 90.95 34 78 (Aperture (sto)) infinity 5.00000infinity1.4874970.49infinity1.2838210*31.875781.5885416.0361.4932469.7711*-10.393480.5000012infinity15.0 0000infinity1.5290966.3413infinity0.1000014infinity0.11000infinity1.5168064.1715infinity0.10000Image plane (img)infinity0

[0187] Tables 3 and 4 below list the aspherical coefficients of the lenses (L1, L2, L3, L4), and the aspherical coefficients can be calculated using the following Equation 1.

[0188] [Mathematical Formula 1]

[0189]

[0190] Here, 'z' represents the distance from the vertex of the lenses (L1, L2, L3, L4 and / or L5) in the direction of the ray axis (OI), 'y' represents the distance in the direction perpendicular to the ray axis (OI), 'c'' represents the reciprocal of the radius of curvature (curvature) at the vertex of the lens, 'k' represents the conic constant, and 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M', 'N', and 'O' may each represent the aspherical coefficients.

[0191] 표면(Surface)S2S3S4S5곡률 반경(Radius)1.04418E+01-4.74338E+00-7.66242E+004.19175E+00K(Conic)-3.00822E+00-1.00000E+00-1.22573E+024.71555E-01A(4th) / C4-9.61104E-047.34994E-03-2.67937E-02-5.04715E-03B(6th) / C59.04540E-04-6.45096E-042.86798E-02-1.52413E-01C(8th) / C6-1.35980E-03-2.53241E-041.65618E-024.82644E-01D(10th) / C71.31166E-037.58514E-04-5.13747E-02-7.02282E-01E(12th) / C8-7.89450E-04-7.20913E-044.85209E-026.19072E-01F(14th) / C93.16213E-043.85960E-04-2.70241E-02-3.67649E-01G(16th) / C10-8.77192E-05-1.32931E-041.00148E-021.56587E-01H(18th) / C111.71973E-053.11232E-05-2.56919E-03-5.00811E-02J(20th) / C12-2.39595E-06-5.06515E-064.59660E-041.24179E-02K(22th) / C132.35267E-075.73660E-07-5.64315E-05-2.40416E-03L(24th) / C14-1.58743E-08-4.43503E-084.54061E-063.52508E-04M(26th) / C156.98288E-102.23073E-09-2.16052E-07-3.63444E-05N(28th) / C16-1.79586E-11-6.57292E-114.61679E-092.30512E-06O(30th) / C172.03701E-138.59648E-130.00000E+00-6.66250E-08

[0192] 표면(Surface)S6S7S10S11곡률 반경(Radius)3.45391E+003.61929E+003.18758E+01-1.03935E+01K(Conic)-1.83988E+00-1.00000E+00-1.00000E+00-1.00000E+00A(4th) / C42.88636E-022.66531E-021.68127E-045.96585E-04B(6th) / C5-1.35245E-01-1.67899E-02-8.69545E-04-1.24056E-03C(8th) / C63.39467E-01-2.46758E-039.17344E-041.10444E-03D(10th) / C7-4.54586E-014.22632E-02-5.77804E-04-6.02299E-04E(12th) / C83.66412E-01-9.62847E-022.15995E-042.05627E-04F(14th) / C9-1.89474E-011.20317E-01-4.84572E-05-4.43796E-05G(16th) / C106.45191E-02-9.54343E-026.35930E-065.90590E-06H(18th) / C11-1.44212E-025.11732E-02-4.46365E-07-4.44748E-07J(20th) / C122.03898E-03-1.91109E-021.28800E-081.45992E-08K(22th) / C13-1.65520E-045.00469E-030.00000E+000.00000E+00L(24th) / C145.88162E-06-9.04938E-040.00000E+000.00000E+00M(26th) / C150.00000E+001.07951E-040.00000E+000.00000E+00N(28th) / C160.00000E+00-7.66236E-060.00000E+000.00000E+00O(30th) / C170.00000E+002.45485E-070.00000E+000.00000E+00

[0193] FIG. 5c is a graph showing the spherical aberration of an optical system (300) according to one embodiment of the present disclosure in the state of FIG. 5a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 5d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 5a of an optical system (300) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 5e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 5a of an optical system (300) according to one embodiment of the present disclosure. FIG. 5f is a graph showing spherical aberration in the state of FIG. 5b 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 ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 5g is 546 in the state of FIG. 5b of an optical system (300) according to one embodiment of the present disclosure.This is a graph showing astigmatic field curves for light of wavelength 1000 (NM), where 'S' exemplifies the sagittal plane (solid line) and 'T' exemplifies the tangential plane (or meridional plane) (dotted line). FIG. 5h is a graph showing the distortion of light of wavelength 546.1000 (NM) in the state of FIG. 5b of an optical system (300) according to one embodiment of the present disclosure.

[0194] [Example 2]

[0195] FIG. 6a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 6b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 6c is a graph showing spherical aberration of the lens assembly of FIG. 6a according to one embodiment of the present disclosure. FIG. 6d is a graph showing astigmatism of the lens assembly of FIG. 6a according to one embodiment of the present disclosure. FIG. 6e is a graph showing distortion rate of the lens assembly of FIG. 6a according to one embodiment of the present disclosure. FIG. 6f is a graph showing spherical aberration of the lens assembly of FIG. 6b according to one embodiment of the present disclosure. FIG. 6g is a graph showing astigmatism of the lens assembly of FIG. 6b according to one embodiment of the present disclosure. FIG. 6h is a graph showing distortion rate of the lens assembly of FIG. 6b according to one embodiment of the present disclosure.

[0196] In the present disclosure, the configuration of the optical system (400) according to the embodiments of FIGS. 6a to 6h may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 5a to 5h. The description of the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (300) according to the embodiments of FIGS. 5a to 5h may be applied in the same or similarly to the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (400) according to the embodiments of FIGS. 6a to 6h.

[0197] In one embodiment, the optical system (400) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.064, and an overall length (OTTL) of about 28.565. 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], surface 1 may be a measured value of the air gap. In [Table 5], surface 'n' (where n is 2 to 7, 10 to 11) may correspond to Sn (where n is 2 to 7, 10 to 11), which is the subject side or image side of the lenses (L1, L2, L3, L4) of the present disclosure. In [Table 5], surfaces '8' and '9' correspond to the subject side surface (S8) and the upper side surface (S9) of the first optical member (M1), and surfaces '12' and '13' may correspond to the subject side surface (S13) and the upper side surface (S13) of the second optical member (M2). In [Table 5], surfaces '14' and '15' may correspond to the subject side surface (S14) and the upper side surface (S15) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0198] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2 * 5.22 139 1.728 81 6.33 9 1.560 274 ​​3.33 3 * -9.94 81 6 1.10 22 04 * -8.57 83 10.30 754 -5.28 6 1.59 25 92 8.95 5 *5.06 43 20.05000 6 *3.8 33 77 0.30000 -32.61 41.597 84 27.86 7 *3.11 38 21.01 145 8 (Aperture (sto)) infinity 5.00000 inf inity1.7439744.859infinity1.1954710*4.728982.0000013.5561.4874970.411*14.198050.5594412infinity15.00000infinity1.679 2751.1213infinity0.1000014infinity0.11000infinity1.5168064.1715infinity0.09998Image plane (img)infinity0Subject (O)infinityinfinity

[0199] Tables 6 and 7 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4) of the optical system (400), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0200] 표면(Surface)S2S3S4S5곡률 반경(Radius)5.22139E+00-9.94816E+00-8.57831E+005.06432E+00K(Conic)-9.44074E-01-1.00000E+00-1.15375E+02-2.94178E-01A(4th) / C43.93819E-044.30677E-03-3.13500E-044.47061E-02B(6th) / C51.71662E-05-2.16114E-04-3.51162E-03-8.74082E-02C(8th) / C67.80395E-07-3.77010E-041.36902E-021.04932E-01D(10th) / C7-1.44689E-074.63815E-04-1.46909E-02-8.56224E-02E(12th) / C8-7.27414E-08-3.07555E-048.59651E-034.77600E-02F(14th) / C97.06354E-091.31137E-04-3.09313E-03-1.92084E-02G(16th) / C101.72255E-10-3.81922E-056.66911E-045.76690E-03H(18th) / C11-5.50324E-117.80472E-06-6.31970E-05-1.30638E-03J(20th) / C123.53559E-12-1.12873E-06-7.03331E-062.22785E-04K(22th) / C13-1.20063E-131.14790E-073.10492E-06-2.82661E-05L(24th) / C142.44443E-15-8.01656E-09-4.34326E-072.59684E-06M(26th) / C15-3.00219E-173.65415E-102.97786E-08-1.63411E-07N(28th) / C162.05170E-19-9.77319E-12-8.39511E-106.28495E-09O(30th) / C17-5.89436E-221.16113E-130.00000E+00-1.10859E-10

[0201] 표면(Surface)S6S7S10S11곡률 반경(Radius)3.83377E+003.11383E+004.72898E+001.41981E+01K(Conic)-3.17746E+00-1.00000E+00-1.00000E+00-1.00000E+00A(4th) / C45.94625E-022.95391E-021.61550E-032.08984E-03B(6th) / C5-6.99678E-02-3.57938E-034.03180E-043.86048E-04C(8th) / C65.37962E-02-2.39139E-02-1.75949E-04-9.43732E-05D(10th) / C7-3.08555E-023.18207E-025.47951E-052.74067E-05E(12th) / C81.11016E-02-2.50699E-02-2.72450E-06-2.99935E-06F(14th) / C9-2.38477E-031.36262E-02-2.98867E-061.58488E-07G(16th) / C102.97250E-04-5.27274E-038.86308E-07-4.44841E-09H(18th) / C11-1.91357E-051.48165E-03-1.01110E-076.41820E-11J(20th) / C122.95019E-07-3.05111E-044.13321E-09-3.75811E-13K(22th) / C133.10189E-084.56719E-050.00000E+000.00000E+00L(24th) / C14-1.28375E-09-4.82475E-060.00000E+000.00000E+00M(26th) / C150.00000E+003.39268E-070.00000E+000.00000E+00N(28th) / C160.00000E+00-1.41758E-080.00000E+000.00000E+00O(30th) / C170.00000E+002.65105E-100.00000E+000.00000E+00

[0202] FIG. 6c is a graph showing the spherical aberration of an optical system (400) according to one embodiment of the present disclosure in the state of FIG. 6a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 6d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 6a of an optical system (400) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 6e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 6a of an optical system (400) according to one embodiment of the present disclosure. FIG. 6f is a graph showing spherical aberration in the state of FIG. 6b 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 ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 6g is 546 in the state of FIG. 6b of an optical system (400) according to one embodiment of the present disclosure.This is a graph showing astigmatic field curves for light of wavelength 1000 (NM), where 'S' exemplifies the sagittal plane (solid line) and 'T' exemplifies the tangential plane (or meridional plane) (dotted line). FIG. 6h is a graph showing the distortion of light of wavelength 546.1000 (NM) in the state of FIG. 6b of an optical system (400) according to one embodiment of the present disclosure.

[0203] [Example 3]

[0204] FIG. 7a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 7b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 7c is a graph showing spherical aberration of the lens assembly of FIG. 7a according to one embodiment of the present disclosure. FIG. 7d is a graph showing astigmatism of the lens assembly of FIG. 7a according to one embodiment of the present disclosure. FIG. 7e is a graph showing the distortion rate of the lens assembly of FIG. 7a according to one embodiment of the present disclosure. FIG. 7f is a graph showing spherical aberration of the lens assembly of FIG. 7b according to one embodiment of the present disclosure. FIG. 7g is a graph showing astigmatism of the lens assembly of FIG. 7b according to one embodiment of the present disclosure. FIG. 7h is a graph showing the distortion rate of the lens assembly of FIG. 7b according to one embodiment of the present disclosure.

[0205] In the present disclosure, the configuration of the optical system (500) according to the embodiments of FIGS. 7a to 7h may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 5a to 5h. The description of the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (300) according to the embodiments of FIGS. 5a to 5h may be applied in the same or similarly to the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (500) according to the embodiments of FIGS. 7a to 7h.

[0206] In one embodiment, the optical system (500) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.247, and an overall length (OTTL) of about 28.656. 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], surface 1 may be a measured value of the air gap. In [Table 8], surface 'n' (where n is 2 to 7, 10 to 11) may correspond to Sn (where n is 2 to 7, 10 to 11), which is the subject side or image side of the lenses (L1, L2, L3, L4) of the present disclosure. In [Table 8], surfaces '8' and '9' correspond to the subject side surface (S8) and the upper side surface (S9) of the first optical member (M1), and surfaces '12' and '13' may correspond to the subject side surface (S13) and the upper side surface (S13) of the second optical member (M2). In [Table 8], surfaces '14' and '15' may correspond to the subject side surface (S14) and the upper side surface (S15) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0207] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2 * 6.9 429 6 1.6 27 45 5.76 2 1.5 6 30 34 1.76 3 * -5.6 34 06 0.99 77 14 * 6 79 5.1 21 0.3 0000 -1 2.0 8 1 1.5 8 124 31.75 * 7.0 66 65 0.1 127 06 * 11.00 5 14 0.4 00 28 -7.2 32 1.6 20 97 24.0 67 * 3.1 66 46 1.0 6 18 68 (Aperture (sto)) infinity 5 .00000infinity1.7439744.859infinity1.3455710*-24.397292.0000016.5381.5877562.1411*-7.181890.5000012infinity15.0 0000infinity1.6930449.5413infinity0.1000014infinity0.11000infinity1.5168064.1715infinity0.09998Image plane (img)infinity0

[0208] Tables 9 and 10 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4) of the optical system (500), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0209] 표면(Surface)S2S3S4S5곡률 반경(Radius)6.94296E+00-5.63407E+006.79512E+037.06665E+00K(Conic)-2.73979E+00-1.00000E+00-5.79949E+14-5.40396E+01A(4th) / C4-1.48505E-169.97013E-036.04842E-034.32095E-04B(6th) / C57.62949E-16-1.77090E-03-1.51841E-04-1.02247E-06C(8th) / C6-1.57426E-153.54044E-042.04887E-061.69285E-09D(10th) / C71.79371E-15-6.38054E-05-1.69602E-08-2.03899E-12E(12th) / C8-1.28379E-159.15544E-069.29599E-112.51754E-13F(14th) / C96.16122E-16-9.84625E-07-3.91042E-13-2.53326E-13G(16th) / C10-2.05504E-167.72259E-081.99702E-141.77292E-13H(18th) / C114.85254E-17-4.35918E-09-6.23767E-15-8.76907E-14J(20th) / C12-8.15522E-181.75350E-101.41871E-153.08757E-14K(22th) / C139.68141E-19-4.95579E-12-2.20390E-16-7.68856E-15L(24th) / C14-7.92637E-209.58555E-142.23390E-171.32265E-15M(26th) / C154.25539E-21-1.20607E-15-1.33406E-18-1.49474E-16N(28th) / C16-1.34768E-228.88489E-183.56684E-209.98214E-18O(30th) / C171.90797E-24-2.90702E-200.00000E+00-2.98440E-19

[0210] 표면(Surface)S6S7S10S11곡률 반경(Radius)1.10051E+013.16646E+00-2.43973E+01-7.18189E+00K(Conic)-4.42405E+01-1.00000E+00-1.00000E+00-1.00000E+00A(4th)2.64314E-023.54395E-02-2.95762E-03-2.44996E-03B(6th)-1.10483E-02-1.48837E-023.32410E-05-6.94848E-05C(8th)2.47924E-033.61474E-03-1.44619E-04-8.98349E-06D(10th)-3.63986E-04-5.66940E-043.59737E-052.00328E-07E(12th)3.63554E-056.08422E-054.46922E-06-1.92580E-09F(14th)-2.45787E-06-4.57797E-06-6.00951E-061.01256E-11G(16th)1.11300E-072.44337E-071.65179E-06-3.67898E-14H(18th)-3.31135E-09-9.29476E-09-1.96647E-079.10821E-16J(20th)6.19887E-112.51481E-108.71196E-09-4.63893E-17K(22th)-6.61469E-13-4.82724E-120.00000E+000.00000E+00L(24th)3.06713E-157.36137E-140.00000E+000.00000E+00M(26th)0.00000E+00-1.98472E-150.00000E+000.00000E+00N(28th)0.00000E+001.07732E-160.00000E+000.00000E+00O(30th)0.00000E+00-3.37152E-180.00000E+000.00000E+00

[0211] FIG. 7c is a graph showing the spherical aberration of an optical system (500) according to one embodiment of the present disclosure in the state of FIG. 7a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 7d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 7a of an optical system (500) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 7e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 7a of an optical system (500) according to one embodiment of the present disclosure. FIG. 7f is a graph showing spherical aberration in the state of FIG. 7b 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 ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 7g is 546 in the state of FIG. 7b of an optical system (500) according to one embodiment of the present disclosure.This is a graph showing astigmatic field curves for light of wavelength 1000 (NM), where 'S' exemplifies the sagittal plane (solid line) and 'T' exemplifies the tangential plane (or meridional plane) (dotted line). FIG. 7h is a graph showing the distortion of light of wavelength 546.1000 (NM) in the state of FIG. 7b of an optical system (500) according to one embodiment of the present disclosure.

[0212] [Example 4]

[0213] FIG. 8a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 8b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 8c is a graph showing spherical aberration of the lens assembly of FIG. 8a according to one embodiment of the present disclosure. FIG. 8d is a graph showing astigmatism of the lens assembly of FIG. 8a according to one embodiment of the present disclosure. FIG. 8e is a graph showing the distortion rate of the lens assembly of FIG. 8a according to one embodiment of the present disclosure. FIG. 8f is a graph showing spherical aberration of the lens assembly of FIG. 8b according to one embodiment of the present disclosure. FIG. 8g is a graph showing astigmatism of the lens assembly of FIG. 8b according to one embodiment of the present disclosure. FIG. 8h is a graph showing the distortion rate of the lens assembly of FIG. 8b according to one embodiment of the present disclosure.

[0214] In the present disclosure, the configuration of the optical system (600) according to the embodiments of FIGS. 8a to 8h may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 5a to 5h. The description of the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (300) according to the embodiments of FIGS. 5a to 5h may be applied in the same or similarly to the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (600) according to the embodiments of FIGS. 8a to 8h.

[0215] In one embodiment, the optical system (600) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.719, and an overall length (OTTL) of about 27.950. 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], surface 1 may be a measured value of the air gap. In [Table 11], surface 'n' (where n is 2 to 7, 10 to 11) may correspond to Sn (where n is 2 to 7, 10 to 11), which is the subject side or image side of the lenses (L1, L2, L3, L4) of the present disclosure. In [Table 11], surfaces '8' and '9' correspond to the subject side surface (S8) and the upper side surface (S9) of the first optical member (M1), and surfaces '12' and '13' may correspond to the subject side surface (S13) and the upper side surface (S13) of the second optical member (M2). In [Table 11], surfaces '14' and '15' may correspond to the subject side surface (S14) and the upper side surface (S15) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0216] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2*4.29 257 1.5 2576 11.04 11.5 570 24 5.36 3*12.25 116 0.10000 4*12.8 438 90.446 70 22.60 11.56 8 45 39.03 5*200 5.20 537 1.1 329 96*11 629.8 48 0.30000 - 5.18 11.6 369 26.76 7*3.15 41 30.99 45 58 (Aperture (sto)) infini ty5.00000infinity1.7521430.779infinity1.1799610*8.080240.6802912.4931.6204160.3211*-203.750070.7897912infinity15 .00000infinity1.4874970.413infinity0.1000014infinity0.11000infinity1.5168064.1715infinity0.59000Image plane (img)infinity0

[0217] Tables 12 and 13 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4) of the optical system (600), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0218] 표면(Surface)S2S3S4S5곡률 반경(Radius)4.29257E+001.22512E+011.28439E+012.00521E+03K(Conic)-3.56807E-02-1.00000E+009.22410E+001.52904E+03A(4th)7.09975E-152.37613E-034.35084E-035.19938E-03B(6th)2.77616E-15-1.22158E-03-1.18833E-032.01481E-05C(8th)-6.21528E-151.60600E-041.87608E-04-5.76225E-05D(10th)7.41946E-15-1.01022E-05-3.96024E-054.90090E-06E(12th)-5.41428E-153.96156E-079.57782E-06-2.10173E-07F(14th)2.60279E-15-1.10077E-08-1.82441E-065.63923E-09G(16th)-8.60935E-162.29676E-102.47888E-07-1.02572E-10H(18th)2.00689E-16-3.64216E-12-2.30324E-081.29608E-12J(20th)-3.32641E-174.32720E-141.42543E-09-3.74579E-15K(22th)3.89936E-18-3.74908E-16-5.72769E-11-2.53424E-15L(24th)-3.16010E-192.29714E-181.42838E-125.40327E-16M(26th)1.68436E-20-1.09230E-20-2.00215E-14-7.09380E-17N(28th)-5.31242E-221.05362E-221.20233E-165.36980E-18O(30th)7.51175E-24-1.65580E-240.00000E+00-1.78934E-19

[0219] 표면(Surface)S6S7S10S11곡률 반경(Radius)1.16298E+043.15413E+008.08024E+00-2.03750E+02K(Conic)-2.21461E+13-1.00000E+00-1.00000E+00-1.00000E+00A(4th)-2.91691E-04-9.20913E-05-1.29052E-03-1.80365E-03B(6th)1.01938E-031.46756E-03-9.83707E-047.53355E-07C(8th)-4.82138E-04-3.77814E-041.37235E-03-2.68562E-10D(10th)1.23315E-048.82441E-05-1.04068E-031.65057E-13E(12th)-2.04671E-05-1.24964E-054.65484E-04-6.04115E-14F(14th)2.09862E-061.07797E-06-1.25389E-042.15030E-14G(16th)-1.31783E-07-6.05053E-081.98714E-05-4.50303E-15H(18th)5.08004E-092.31001E-09-1.69141E-065.12553E-16J(20th)-1.17402E-10-6.14291E-115.88466E-08-2.44727E-17K(22th)1.49444E-121.17459E-120.00000E+000.00000E+00L(24th)-8.06337E-15-2.20734E-140.00000E+000.00000E+00M(26th)0.00000E+001.05524E-150.00000E+000.00000E+00N(28th)0.00000E+00-6.76781E-170.00000E+000.00000E+00O(30th)0.00000E+002.15818E-180.00000E+000.00000E+00

[0220] FIG. 8c is a graph showing the spherical aberration of an optical system (600) according to one embodiment of the present disclosure in the state of FIG. 8a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 8d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 8a of an optical system (600) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 8e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 8a of an optical system (600) according to one embodiment of the present disclosure. FIG. 8f is a graph showing spherical aberration in the state of FIG. 8b 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 ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 8g is 546 in the state of FIG. 8b of an optical system (600) according to one embodiment of the present disclosure.This is a graph showing astigmatic field curves for light of wavelength 1000 (NM), where 'S' exemplifies the sagittal plane (solid line) and 'T' exemplifies the tangential plane (or meridional plane) (dotted line). FIG. 8h is a graph showing the distortion of light of wavelength 546.1000 (NM) in the state of FIG. 8b of an optical system (600) according to one embodiment of the present disclosure.

[0221] [Example 5]

[0222] FIG. 9a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 9b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 9c is a graph showing spherical aberration of the lens assembly of FIG. 9a according to one embodiment of the present disclosure. FIG. 9d is a graph showing astigmatism of the lens assembly of FIG. 9a according to one embodiment of the present disclosure. FIG. 9e is a graph showing the distortion rate of the lens assembly of FIG. 9a according to one embodiment of the present disclosure. FIG. 9f is a graph showing spherical aberration of the lens assembly of FIG. 9b according to one embodiment of the present disclosure. FIG. 9g is a graph showing astigmatism of the lens assembly of FIG. 9b according to one embodiment of the present disclosure. FIG. 9h is a graph showing the distortion rate of the lens assembly of FIG. 9b according to one embodiment of the present disclosure.

[0223] In the present disclosure, the configuration of the optical system (700) according to the embodiments of FIGS. 9a to 9h may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 5a to 5h. The description of the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (300) according to the embodiments of FIGS. 5a to 5h may be applied in the same or similarly to the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (700) according to the embodiments of FIGS. 9a to 9h.

[0224] In one embodiment, the optical system (700) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.327, and an overall length (OTTL) of about 28.819. 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], surface 1 may be a measured value of the air gap. In [Table 14], surface 'n' (where n is 2 to 7, 10 to 11) may correspond to Sn (where n is 2 to 7, 10 to 11), which is the subject side or image side of the lenses (L1, L2, L3, L4) of the present disclosure. In [Table 14], surfaces '8' and '9' correspond to the subject side surface (S8) and the upper side surface (S9) of the first optical member (M1), and surfaces '12' and '13' may correspond to the subject side surface (S13) and the upper side surface (S13) of the second optical member (M2). In [Table 14], surfaces '14' and '15' may correspond to the subject side surface (S14) and the upper side surface (S15) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0225] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2 * 8.5 70 60 1.5 54 37 6.00 1 1.5 59 45 4 3.8 23 * -5.2 48 9 1.0 6 97 64 * 16 9 3 1.8 73 0.3 0000 -16.7 26 1.5 76 62 3 3.0 15 * 9.7 79 5 0.2 40 41 6 * 15.1 75 44 0.3 0000 -6.5 50 1.6 88 5 25.8 87 * 3.1 56 74 1.0 3 54 5 8 (Aperture (sto)) infinity 5.00000infinity1.7439744.859infinity1.3049510*-18.881742.0000016.0381.6204160.3211*-6.798570.5016312infinity15.0 0000infinity1.6172760.4813infinity0.3029914infinity0.11000infinity1.5168064.1715infinity0.09993Image plane (img)infinity0

[0226] Tables 15 and 16 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4) of the optical system (700), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0227] 표면(Surface)S2S3S4S5곡률 반경(Radius)8.57060E+00-5.20489E+001.69319E+049.70795E+00K(Conic)-6.23751E+00-1.00000E+00-5.79947E+14-7.02674E+01A(4th)-2.06843E-169.51376E-031.61182E-02-2.12697E-03B(6th)1.02635E-15-1.52109E-03-4.19609E-031.66971E-04C(8th)-2.06845E-152.64830E-048.77783E-04-6.29148E-06D(10th)2.35455E-15-4.19659E-05-1.01866E-041.31037E-07E(12th)-1.72688E-155.44225E-06-6.25104E-06-1.71063E-09F(14th)8.68350E-16-5.45241E-075.76537E-061.50256E-11G(16th)-3.08635E-164.11346E-08-1.30184E-06-9.30430E-14H(18th)7.85757E-17-2.30759E-091.67841E-076.64482E-17J(20th)-1.43470E-179.50215E-11-1.36609E-083.05327E-16K(22th)1.85902E-18-2.81593E-127.11892E-10-1.08088E-16L(24th)-1.66557E-195.81518E-14-2.30338E-112.14411E-17M(26th)9.79686E-21-7.91391E-164.21473E-13-2.46332E-18N(28th)-3.40008E-226.36497E-18-3.33332E-151.49928E-19O(30th)5.27250E-24-2.29129E-200.00000E+00-3.58138E-21

[0228] 표면(Surface)S6S7S10S11곡률 반경(Radius)1.51754E+013.15674E+00-1.88817E+01-6.79857E+00K(Conic)2.39707E+01-1.00000E+00-1.00000E+00-1.00000E+00A(4th)1.59684E-031.80546E-02-3.02340E-03-2.30112E-03B(6th)-1.38502E-03-5.71348E-034.68444E-05-6.09586E-05C(8th)1.45857E-049.27877E-04-8.88458E-05-9.66214E-06D(10th)-7.53308E-06-8.68402E-05-3.92582E-052.15023E-07E(12th)2.28723E-075.16375E-064.82015E-05-2.08420E-09F(14th)-4.38810E-09-2.06798E-07-1.99408E-051.10452E-11G(16th)5.47722E-115.77721E-094.14542E-06-3.29185E-14H(18th)-4.44939E-13-1.14915E-10-4.30688E-073.08447E-18J(20th)2.37695E-151.69657E-121.75631E-083.10963E-18K(22th)-1.71212E-17-3.51962E-140.00000E+000.00000E+00L(24th)4.20222E-193.75962E-150.00000E+000.00000E+00M(26th)0.00000E+00-4.61848E-160.00000E+000.00000E+00N(28th)0.00000E+003.42714E-170.00000E+000.00000E+00O(30th)0.00000E+00-1.13409E-180.00000E+000.00000E+00

[0229] FIG. 9c is a graph showing the spherical aberration of an optical system (700) according to one embodiment of the present disclosure in the state of FIG. 9a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 9d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 9a of an optical system (700) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 9e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 9a of an optical system (700) according to one embodiment of the present disclosure. FIG. 9f is a graph showing spherical aberration in the state of FIG. 9b 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 ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 9g shows 546 in the state of FIG. 9b of an optical system (700) according to one embodiment of the present disclosure.This is a graph showing astigmatic field curves for light of wavelength 1000 (NM), where 'S' exemplifies the sagittal plane (solid line) and 'T' exemplifies the tangential plane (or meridional plane) (dotted line). FIG. 9h is a graph showing the distortion of light of wavelength 546.1000 (NM) in the state of FIG. 9b of an optical system (700) according to one embodiment of the present disclosure.

[0230] [Example 6]

[0231] FIG. 10a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 10b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 10c is a graph showing spherical aberration of the lens assembly of FIG. 10a according to one embodiment of the present disclosure. FIG. 10d is a graph showing astigmatism of the lens assembly of FIG. 10a according to one embodiment of the present disclosure. FIG. 10e is a graph showing the distortion rate of the lens assembly of FIG. 10a according to one embodiment of the present disclosure. FIG. 10f is a graph showing spherical aberration of the lens assembly of FIG. 10b according to one embodiment of the present disclosure. FIG. 10g is a graph showing astigmatism of the lens assembly of FIG. 10b according to one embodiment of the present disclosure. FIG. 10h is a graph showing the distortion rate of the lens assembly of FIG. 10b according to one embodiment of the present disclosure.

[0232] In the present disclosure, the configuration of the optical system (800) according to the embodiments of FIGS. 10a to 10h may be at least partially identical or similar to the configuration of the optical system (300) according to the embodiments of FIGS. 5a to 5h. The description of the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fourth lens (L4)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (300) according to the embodiments of FIGS. 5a to 5h may be applied in the same or similarly to the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), image sensor (IS), aperture (sto) and filter member (F) of the optical system (800) according to the embodiments of FIGS. 10a to 10h.

[0233] According to one embodiment, the first lens group (G1) may include a first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) (see FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b). For example, the plurality of lenses included in the first lens group (G1) may be formed of a synthetic resin (e.g., plastic) or glass material. However, in the present disclosure, the number of lenses included in the first lens group (G1) is not limited and may further include additional lenses aligned with the ray axis (OI) together with the first lens (L1), the second lens (L2), the third lens (L3), and the fourth lens (L4). For example, the direction in which a plurality of lenses (L1, L2, L3, L4) included in the first lens group (G1) are arranged may be referred to as the first axis direction, and said first axis direction may be parallel to a part of the ray axis (OI) and may be understood as a part of the ray axis (OI).

[0234] According to one embodiment (see FIG. 10a, FIG. 10b, FIG. 11a, FIG. 11b, FIG. 12a, FIG. 12b, FIG. 13a and FIG. 13b), the first lens (L1) may include a subject side surface (S2) and an image side surface (S3). For example, the second lens (L2) may include a subject side surface (S4) and an image side surface (S5). For example, the third lens (L3) may include a subject side surface (S6) and an image side surface (S7). For example, the fourth lens (L4) may include a subject side surface (S8) and an image side surface (S9). For example, the first optical member (M1) may include a subject side surface (S10) and an image side surface (S11). For example, the fifth lens (L5) may include a subject side surface (S12) and an image side surface (S13). For example, the second optical member (M2) may include a subject side surface (S14) and an image side surface (S15). For example, the filter member (F) may include a subject side surface (S16) and an image side surface (S17).

[0235] According to one embodiment, at least some of the lenses (L1, L2, L3, L4) of the first lens group (G1) 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) as aspheric surfaces, spherical aberration that may occur in the lenses can be suppressed, coma in the periphery of the image sensor (IS) 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 (IS) can be reduced.

[0236] According to one embodiment, in one embodiment, the fourth lens (L4) is a lens that is thirdly adjacent to the subject (O) side (or fourthly positioned from the subject (O) side) and may have positive or negative refractive power. According to one embodiment, the subject side surface (S8) and / or image side surface (S9) of the fourth lens (L4) may be formed as an aspherical surface.

[0237] According to one embodiment, in one embodiment, the fifth lens (L4) of the second lens group (G2) is a lens positioned between the first optical member (M1) and the second optical member (M2), or is the lens closest to the image (I) side, and may have a positive or negative refractive power. According to one embodiment, the subject side surface (S12) and / or image side surface (S13) of the fifth lens (L5) may be formed as an aspherical surface.

[0238] In one embodiment, an electronic device (e.g., the electronic device (101) of FIG. 1 and / or the electronic device (101) of FIG. 3 and FIG. 4) or its processor (e.g., the processor (120) of FIG. 1) may be configured to perform a focusing (e.g., auto focusing (AF)) operation by moving at least one lens (e.g., the fifth lens (L5)) of the second lens group (G2) in a second axis direction passing through the center of the lens (e.g., the fourth lens (L4)). Here, the second axis direction may mean a virtual axis (or axis direction) passing through the center of the lens(s) (e.g., the fifth lens (L5)) included in the second lens group (G2), and may be parallel to a part of the ray axis (OI). For example, the second axis direction may form a non-zero angle with the first axis direction in which a plurality of lenses (L1, L2, L3, L4) included in the first lens group (G1) are arranged. When the fifth lens (L5) of the second lens group (G2) is moved in the second axis direction for focus adjustment, the lenses (L1, L2, L3) and optical members (M1, M2) of the first lens group (G1) may be maintained in a stationary state. When focusing is performed by moving the second lens group (G2), it may be easier to set the focus distance compared to moving the first lens group (G2). For example, when the distance to the subject is set to be the same (e.g., 40 cm), the focus distance (D1) when only the second lens group (G2) is moved may be shorter than the focus distance when only the first lens group (G1) is moved.

[0239] In one embodiment, the optical system (800) may have an effective focal length (EFL) of about 19.1, an Fno (or F-number) of about 3.542, and an overall length (OTTL) of about 29.053. 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], surface 1 may be a measured value of the air gap. In [Table 17], surface 'n' (where n is 2 to 9, 12 to 13) may correspond to Sn (where n is 2 to 9, 12 to 13), which is the subject side or image side of the lenses (L1, L2, L3, L4, L5) of the present disclosure. In [Table 17], surfaces '10' and '11' correspond to the subject side surface (S10) and upper side surface (S11) of the first optical member (M1), and surfaces '14' and '15' may correspond to the subject side surface (S14) and upper side surface (S15) of the second optical member (M2). In [Table 17], surfaces '16' and '17' may correspond to the subject side surface (S16) and upper side surface (S17) of the filter member (F). In the present disclosure, surfaces 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0240] Surface Radius of Curvature Effective Thickness Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2*11.9468 51.59109 6.067 1.5571 145.33*-4.52076 0.70827 4*5575 45.098 0.91279 63.498 1.5656 440.45*-36.130 140.1299 26*-10.7191 30.3105 2-17.348 1.5822 131.447*20 3.1930 10.153198*13.83578 0.30000 -5.692 1.5938 328.689*2. 712090.8942310(Aperture(sto))infinity5.00000infinity1.6204160.3211infinity1.4025612*-60.722101.8401616.5951.4874970.413*-7.231470.4000014infinity15.00000infinity1.7439744.8515infinity0.1000016infinity0.11infinity1.5168064.1717infinity0.2ImageFace(img)infinity0

[0241] 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].

[0242] 표면(Surface)S2S3S4S5S6곡률 반경(Radius)1.19469E+01-4.52076E+005.57545E+05-3.61301E+01-1.07191E+01K(Conic)-7.45006E+00-1.00000E+00-6.50946E+141.76380E+02-2.07417E+02A(4th)-9.23811E-049.88832E-034.74560E-031.86179E-033.35652E-03B(6th)4.29732E-05-1.50445E-03-1.86994E-04-8.50166E-046.20671E-03C(8th)-8.92574E-063.20443E-044.64125E-061.43855E-04-8.61751E-03D(10th)8.03342E-07-6.96526E-05-7.15363E-08-1.32347E-056.72443E-03E(12th)-3.70074E-08-2.42938E-057.38297E-107.55947E-07-3.96762E-03F(14th)1.04258E-094.06100E-05-5.35098E-12-2.88935E-081.82963E-03G(16th)-1.95642E-11-2.35510E-051.73161E-147.72421E-10-6.47160E-04H(18th)2.53058E-138.17816E-065.21360E-15-1.49351E-111.71561E-04J(20th)-1.84960E-15-1.87611E-06-1.73094E-152.53780E-13-3.31977E-05K(22th)-6.50271E-172.91911E-073.83393E-16-1.28688E-144.51633E-06L(24th)8.75268E-18-3.05631E-08-5.72784E-171.67212E-15-4.06637E-07M(26th)-6.35314E-192.06501E-095.53531E-18-1.68403E-162.16446E-08N(28th)2.70364E-20-8.13938E-11-3.12849E-191.01873E-17-5.13674E-10O(30th)-5.14754E-221.42217E-127.86053E-21-2.77887E-190.00000E+00.

[0243] 표면(Surface)S7S8S9S12S13곡률 반경(Radius)2.03193E+021.38358E+012.71209E+00-6.07221E+01-7.23147E+00K(Conic)4.77583E+02-3.18140E+02-1.00000E+00-1.00000E+00-1.00000E+00A(4th)-1.19893E-027.76612E-032.03087E-02-2.86521E-03-2.56148E-03B(6th)1.47758E-025.71303E-04-9.07538E-031.77357E-05-2.41118E-04C(8th)-8.61634E-03-2.11534E-03-1.07716E-03-3.48803E-049.19432E-05D(10th)3.04574E-037.90927E-044.04031E-032.34997E-04-7.28315E-05E(12th)-6.90192E-04-1.49619E-04-3.18066E-03-1.00617E-043.42108E-05F(14th)1.04587E-041.72303E-051.48241E-032.62397E-05-1.00823E-05G(16th)-1.09548E-05-1.27491E-06-4.53322E-04-4.11041E-061.77513E-06H(18th)8.10174E-076.08230E-089.43131E-053.49186E-07-1.70757E-07J(20th)-4.26739E-08-1.80453E-09-1.35511E-05-1.20765E-086.88939E-09K(22th)1.59291E-093.01985E-111.34341E-060.00000E+000.00000E+00L(24th)-4.12091E-11-2.17071E-13-9.01466E-080.00000E+000.00000E+00M(26th)7.02941E-130.00000E+003.90684E-090.00000E+000.00000E+00N(28th)-7.09112E-150.00000E+00-9.86285E-110.00000E+000.00000E+00O(30th)3.11844E-170.00000E+001.10105E-120.00000E+000.00000E+00.

[0244] FIG. 10c is a graph showing the spherical aberration of an optical system (800) according to one embodiment of the present disclosure in the state of FIG. 10a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 10d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 10a of an optical system (800) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 10e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 10a of an optical system (800) according to one embodiment of the present disclosure. FIG. 10f is a graph showing the spherical aberration of an optical system (800) according to one embodiment of the present disclosure in the state of FIG. 10b, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray 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, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively.FIG. 10g is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 10b of an optical system (800) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 10h is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 10b of an optical system (800) according to one embodiment of the present disclosure.

[0245] [Example 7]

[0246] FIG. 11a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 11b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 11c is a graph showing spherical aberration of the lens assembly of FIG. 11a according to one embodiment of the present disclosure. FIG. 11d is a graph showing astigmatism of the lens assembly of FIG. 11a according to one embodiment of the present disclosure. FIG. 11e is a graph showing the distortion rate of the lens assembly of FIG. 11a according to one embodiment of the present disclosure. FIG. 11f is a graph showing spherical aberration of the lens assembly of FIG. 11b according to one embodiment of the present disclosure. FIG. 11g is a graph showing astigmatism of the lens assembly of FIG. 11b according to one embodiment of the present disclosure. FIG. 11h is a graph showing the distortion rate of the lens assembly of FIG. 11b according to one embodiment of the present disclosure.

[0247] The first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (900) according to the embodiments of FIGS. 11a to 11h may be referred to as the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (800) according to the embodiments of FIGS. 10a to 10h.

[0248] In one embodiment, the optical system (900) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.581, and an overall length (OTTL) of about 30.376. 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], surface 1 may be a measured value of the air gap. In [Table 20], surface 'n' (where n is 2 to 9, 12 to 13) may correspond to Sn (where n is 2 to 9, 12 to 13), which is the subject side or image side of the lenses (L1, L2, L3, L4, L5) of the present disclosure. In [Table 20], surfaces '10' and '11' correspond to the subject side surface (S10) and upper side surface (S11) of the first optical member (M1), and surfaces '14' and '15' may correspond to the subject side surface (S14) and upper side surface (S15) of the second optical member (M2). In [Table 20], surfaces '16' and '17' may correspond to the subject side surface (S16) and upper side surface (S17) of the filter member (F). In the present disclosure, a surface 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0249] Surface Radius Thickness Effective Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2*10.5 3730 1.480 28 5.887 1.55 30 34 2.96 3*-4.5 10 72 0.40 94 8 4*infinity 0.69 6938 91.24 91.53 577 55.74 5*-45 3.10 56 50.34 23 76*-7.18 44 70.25 78 8-4.35 11.59 255 29.31 7*4.12 68 90.34 58 78*3.26 11 80.58 680 277.18 81.63 32 32 2.52 9*3.08 9020.8775610(Aperture(sto))infinity5.00000infinity1.6331257.9111infinity1.5273012*27.201031.4194613.3961.4874970.413*-8.484270.6627414infinity15.00000infinity1.6341857.7215infinity1.4592316infinity0.11infinity1.5168064.1717infinity0.19992ImageFace(img)infinity0

[0250] 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 through the above-described [Equation 1].

[0251] 표면(Surface)S2S3S4S5S6곡률 반경(Radius)1.05373E+01-4.51072E+00-8.21480E+03-4.53106E+02-7.18447E+00K(Conic)-3.33318E+00-1.00000E+00-7.30298E+064.28203E+04-1.20127E+02A(4th)-2.06722E-03-1.49192E-02-5.54860E-02-3.44821E-02-3.55419E-02B(6th)1.41169E-034.67516E-021.35958E-011.15351E-019.82212E-02C(8th)6.85398E-04-4.40104E-02-1.49234E-01-1.54795E-01-1.63192E-01D(10th)-1.38648E-032.42372E-029.41819E-021.13988E-012.06881E-01E(12th)8.54489E-04-8.64818E-03-3.79498E-02-5.23888E-02-1.97305E-01F(14th)-3.04174E-042.01339E-031.02523E-021.60741E-021.39219E-01G(16th)7.14891E-05-2.67413E-04-1.87819E-03-3.41827E-03-7.19853E-02H(18th)-1.16571E-051.31902E-062.25541E-045.13589E-042.70334E-02J(20th)1.33804E-067.73214E-06-1.52312E-05-5.47945E-05-7.26494E-03K(22th)-1.06992E-07-1.77944E-068.30902E-084.11435E-061.35878E-03L(24th)5.73638E-092.20220E-078.69252E-08-2.11769E-07-1.67786E-04M(26th)-1.89631E-10-1.64955E-08-8.11682E-097.07830E-091.22867E-05N(28th)3.18793E-127.05771E-103.34073E-10-1.37467E-10-4.03856E-07O(30th)-1.40562E-14-1.33159E-11-5.51308E-121.16573E-120.00000E+00.

[0252] 표면(Surface)S7S8S9S12S13곡률 반경(Radius)4.12689E+003.26118E+003.08902E+002.72010E+01-8.48427E+00K(Conic)6.09994E-01-1.74578E+00-1.00000E+00-1.00000E+00-1.00000E+00A(4th)-5.00156E-02-2.60306E-022.63023E-03-7.27520E-04-5.90281E-04B(6th)1.35335E-011.14710E-014.70801E-02-1.13508E-03-1.16388E-03C(8th)-2.39656E-01-2.10845E-01-1.01524E-019.35590E-048.99678E-04D(10th)2.92021E-012.30147E-019.73320E-02-5.56419E-04-4.65848E-04E(12th)-2.41439E-01-1.59982E-01-3.18160E-021.99547E-041.44255E-04F(14th)1.37423E-017.31564E-02-2.71819E-02-4.36282E-05-2.70571E-05G(16th)-5.50180E-02-2.22550E-023.93736E-025.60302E-062.96191E-06H(18th)1.57372E-024.45456E-03-2.39784E-02-3.85978E-07-1.72229E-07J(20th)-3.23328E-03-5.62746E-048.98965E-031.09810E-084.08852E-09K(22th)4.73632E-044.06114E-05-2.24109E-030.00000E+000.00000E+00L(24th)-4.82843E-05-1.27417E-063.74863E-040.00000E+000.00000E+00M(26th)3.25489E-060.00000E+00-4.06425E-050.00000E+000.00000E+00N(28th)-1.30398E-070.00000E+002.59092E-060.00000E+000.00000E+00O(30th)2.35005E-090.00000E+00-7.39102E-080.00000E+000.00000E+00.

[0253] FIG. 11c is a graph showing the spherical aberration of an optical system (900) according to one embodiment of the present disclosure in the state of FIG. 11a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 11d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 11a of an optical system (900) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 11e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 11a of an optical system (900) according to one embodiment of the present disclosure.

[0254] FIG. 11f is a graph showing the spherical aberration of an optical system (900) according to one embodiment of the present disclosure in the state of FIG. 11b, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray 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, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 11g is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 11b of an optical system (900) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 11h is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 11b of an optical system (900) according to one embodiment of the present disclosure.

[0255] [Example 8]

[0256] FIG. 12a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 12b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 12c is a graph showing spherical aberration of the lens assembly of FIG. 12a according to one embodiment of the present disclosure. FIG. 12d is a graph showing astigmatism of the lens assembly of FIG. 12a according to one embodiment of the present disclosure. FIG. 12e is a graph showing distortion rate of the lens assembly of FIG. 12a according to one embodiment of the present disclosure. FIG. 12f is a graph showing spherical aberration of the lens assembly of FIG. 12b according to one embodiment of the present disclosure. FIG. 12g is a graph showing astigmatism of the lens assembly of FIG. 12b according to one embodiment of the present disclosure. FIG. 12h is a graph showing distortion rate of the lens assembly of FIG. 12b according to one embodiment of the present disclosure.

[0257] The first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (1000) according to the embodiments of FIGS. 12a to 12h may be referred to as the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (1000) according to the embodiments of FIGS. 10a to 10h.

[0258] In one embodiment, the optical system (1000) may have an effective focal length (EFL) of about 18.6, an Fno (or F-number) of about 3.622, and an overall length (OTTL) of about 27.720. In one embodiment, the optical system (1000) may be manufactured with the specifications exemplified in the following [Table 23] and may have the aspherical coefficients of [Table 24] and [Table 25]. In [Table 23], surface 1 may be a measured value of the air gap. In [Table 23], surface 'n' (where n is 2 to 9, 12 to 13) may correspond to Sn (where n is 2 to 9, 12 to 13), which is the subject side or image side of the lenses (L1, L2, L3, L4, L5) of the present disclosure. In [Table 23], surfaces '10' and '11' correspond to the subject side surface (S10) and upper side surface (S11) of the first optical member (M1), and surfaces '14' and '15' may correspond to the subject side surface (S14) and upper side surface (S15) of the second optical member (M2). In [Table 23], surfaces '16' and '17' may correspond to the subject side surface (S16) and upper side surface (S17) of the filter member (F). In the present disclosure, surfaces 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0259] Surface Radius of Curvature Effective Thickness Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2* 9.71347 1.76900 6.087 1.55935 43.883 * - 4.93977 0.83929 4* 525.31986 0.862185 2.278 1.6692219.265 * - 37.94667 0.1806 16 * - 6.84952 0.20000 - 4.8931.6035326.827 * 5.32971 0.05000 8* 3.86529 0.30773 - 35.7121.6139925.069 * 3.1903 80.7911810(Aperture(sto))infinity5.00000infinity1.7552027.5811infinity1.2899612*-69.478740.6196217.2401.4874970.413*-7.541920.4000014infinity15.00000infinity1.7375945.3615infinity0.1000016infinity0.11infinity1.5168064.1717infinity0.20006ImageFace(img)infinity0

[0260] Tables 24 and 25 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (1000), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0261] 표면(Surface)S2S3S4S5S6곡률 반경(Radius)9.71347E+00-4.93977E+005.25320E+02-3.79467E+01-6.84952E+00K(Conic)-2.65930E+00-1.00000E+005.10009E+031.15018E+02-1.52532E+02A(4th)-3.28874E-046.73797E-03-1.39360E-112.54215E-03-2.24405E-02B(6th)2.89060E-07-1.30840E-031.95592E-17-1.74618E-035.78147E-02C(8th)-1.27534E-101.46224E-03-6.23912E-176.36895E-04-8.57424E-02D(10th)3.94169E-14-2.15194E-032.47238E-16-1.14495E-041.04373E-01E(12th)-4.85533E-151.87397E-03-4.99497E-161.20099E-05-9.63591E-02F(14th)2.98520E-15-1.00723E-036.01470E-16-8.16731E-076.37335E-02G(16th)-1.27313E-153.57620E-04-4.68240E-163.82500E-08-2.98392E-02H(18th)3.84776E-16-8.72779E-052.46214E-16-1.27572E-099.85437E-03J(20th)-8.31041E-171.49006E-05-8.92491E-173.07681E-11-2.27080E-03K(22th)1.27557E-17-1.77838E-062.23407E-17-5.47046E-133.55972E-04L(24th)-1.36006E-181.45423E-07-3.79256E-181.02773E-14-3.60842E-05M(26th)9.58313E-20-7.76295E-094.16685E-19-6.63237E-162.12890E-06N(28th)-4.01440E-212.43624E-10-2.67155E-205.42147E-17-5.54489E-08O(30th)7.57366E-23-3.40764E-127.58421E-22-2.03074E-180.00000E+00.

[0262] 표면(Surface)S7S8S9S12S13곡률 반경(Radius)5.32971E+003.86529E+003.19038E+00-6.94787E+01-7.54192E+00K(Conic)-5.89709E-01-2.84161E+00-1.00000E+00-1.00000E+00-1.00000E+00A(4th)-9.95452E-02-1.02555E-011.19602E-02-2.49595E-02-2.50531E-02B(6th)3.12256E-013.31856E-01-2.51230E-032.15238E-022.22120E-02C(8th)-4.00571E-01-4.01831E-017.18502E-02-9.00721E-03-1.13752E-02D(10th)2.84781E-012.19775E-01-2.07465E-017.11178E-043.20501E-03E(12th)-1.26884E-01-3.77489E-022.47750E-017.07125E-04-4.94884E-04F(14th)3.78862E-02-1.84212E-02-1.64029E-01-2.52066E-044.40445E-05G(16th)-7.88243E-031.25513E-026.66239E-023.60867E-05-2.27067E-06H(18th)1.16700E-03-3.36510E-03-1.70395E-02-2.43231E-066.32093E-08J(20th)-1.23802E-044.88480E-042.62592E-036.36850E-08-7.36533E-10K(22th)9.34715E-06-3.78068E-05-1.89778E-040.00000E+000.00000E+00L(24th)-4.90452E-071.22773E-06-7.31655E-060.00000E+000.00000E+00M(26th)1.70012E-080.00000E+002.75395E-060.00000E+000.00000E+00N(28th)-3.50082E-100.00000E+00-2.19962E-070.00000E+000.00000E+00O(30th)3.24281E-120.00000E+006.29889E-090.00000E+000.00000E+00.

[0263] FIG. 12c is a graph showing the spherical aberration of an optical system (1000) according to one embodiment of the present disclosure in the state of FIG. 12a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray 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, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively. FIG. 12d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 12a of an optical system (1000) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 12e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 12a of an optical system (1000) according to one embodiment of the present disclosure. FIG. 12f is a graph showing the spherical aberration of an optical system (1000) according to one embodiment of the present disclosure in the state of FIG. 12b, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray 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, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively.FIG. 12g is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 12b of an optical system (1000) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 12h is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 12b of an optical system (1000) according to one embodiment of the present disclosure.

[0264] [Example 9]

[0265] FIG. 13a is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 13b is a configuration diagram showing a lens assembly according to one embodiment of the present disclosure. FIG. 13c is a graph showing spherical aberration of the lens assembly of FIG. 13a according to one embodiment of the present disclosure. FIG. 13d is a graph showing astigmatism of the lens assembly of FIG. 13a according to one embodiment of the present disclosure. FIG. 13e is a graph showing the distortion rate of the lens assembly of FIG. 13a according to one embodiment of the present disclosure. FIG. 13f is a graph showing spherical aberration of the lens assembly of FIG. 13b according to one embodiment of the present disclosure. FIG. 13g is a graph showing astigmatism of the lens assembly of FIG. 13b according to one embodiment of the present disclosure. FIG. 13h is a graph showing the distortion rate of the lens assembly of FIG. 13b according to one embodiment of the present disclosure.

[0266] The first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (1100) according to the embodiments of FIGS. 13a to 13h may be referred to as the first lens group (G1) (also the first lens (L1), second lens (L2), third lens (L3) and fourth lens (L4)), second lens group (G2) (also the fifth lens (L5)), first optical member (M1), second optical member (M2), aperture (sto) and filter member (F) of the optical system (1000) according to the embodiments of FIGS. 10a to 10h.

[0267] In one embodiment, the optical system (1100) may have an effective focal length (EFL) of about 20, an Fno (or F-number) of about 3.704, and an overall length (OTTL) of about 29.618. In one embodiment, the optical system (1100) may be manufactured with the specifications exemplified in the following [Table 26] and may have the aspherical coefficients of [Table 27] and [Table 28]. In [Table 26], surface 1 may be a measured value of the air gap. In [Table 26], surface 'n' (where n is 2 to 9, 12 to 13) may correspond to Sn (where n is 2 to 9, 12 to 13), which is the subject side or image side of the lenses (L1, L2, L3, L4, L5) of the present disclosure. In [Table 26], surfaces '10' and '11' correspond to the subject side surface (S10) and upper side surface (S11) of the first optical member (M1), and surfaces '14' and '15' may correspond to the subject side surface (S14) and upper side surface (S15) of the second optical member (M2). In [Table 26], surfaces '16' and '17' may correspond to the subject side surface (S16) and upper side surface (S17) of the filter member (F). In the present disclosure, surfaces 'n' including an aspherical surface in the table may be indicated as 'n*'.

[0268] Surface Radius of Curvature Effective Thickness Focal Length (EFL) ndvd Subject (O) infinity infinity 1 infinity 0.00000 2*9.77 287 1.29 750 6.03 21.58 0283 4.28 3*-5.24 30 40.45 55 44*3 0.1 22 3 40.47 800 47.6 19 1.54 41 05 6.09 5*-1 89.97 34 60.39 49 66*-6.3 35 1 40.30 42 1-3.72 51.60 824 27.02 7*3.64 06 21.19 61 58*4 1.26 56 80.75 70 21 4.02 11.54 41 05 6.09 9*-9.34 7180.1166210(Aperture(sto))infinity5.00000infinity1.7439744.8511infinity3.3098912*-10.344980.4976954.7731.5963761.6313*-8.005740.3999314infinity15.00000infinity1.7439744.8515infinity0.1000016infinity0.11infinity1.5168064.1717infinity0.2ImageFace(img)infinity0

[0269] Tables 27 and 28 below describe the aspherical coefficients of the lenses (L1, L2, L3, L4, L5) of the optical system (1100), and the aspherical coefficients can be calculated through the above-described [Equation 1].

[0270] 표면(Surface)S2S3S4S5S6곡률 반경(Radius)9.77288E+00-5.24304E+003.01223E+01-1.89973E+02-6.33514E+00K(Conic)-1.83203E+00-1.00000E+00-4.78387E+013.29889E+03-1.12111E+02A(4th)-1.09008E-036.56913E-03-5.84948E-03-3.70827E-03-2.09895E-02B(6th)3.10455E-042.21025E-031.37187E-021.24413E-025.38458E-02C(8th)-9.26336E-05-2.62964E-03-1.46714E-02-9.19502E-03-5.83834E-02D(10th)1.54131E-051.26632E-039.55035E-033.55916E-034.41619E-02E(12th)-1.49914E-06-2.72750E-04-4.11378E-03-8.48984E-04-2.80628E-02F(14th)9.31157E-08-3.73869E-051.20597E-031.33752E-041.51932E-02G(16th)-3.90914E-094.69629E-05-2.45299E-04-1.43930E-05-6.46913E-03H(18th)1.14498E-10-1.67058E-053.50813E-051.07051E-062.03339E-03J(20th)-2.37118E-123.54532E-06-3.54457E-06-5.45992E-08-4.55575E-04K(22th)3.46224E-14-4.98142E-072.51381E-071.84529E-097.04897E-05L(24th)-3.49354E-164.69495E-08-1.22345E-08-3.78797E-11-7.15410E-06M(26th)2.37006E-18-2.86682E-093.89017E-103.59673E-134.28682E-07N(28th)-1.27035E-201.02791E-10-7.27725E-129.04394E-16-1.14992E-08O(30th)1.06525E-22-1.64610E-126.07344E-14-3.44625E-170.00000E+00.

[0271] 표면(Surface)S7S8S9S12S13곡률 반경(Radius)3.64062E+004.12657E+01-9.34718E+00-1.03450E+01-8.00575E+00K(Conic)-1.92227E-01-7.25802E+03-1.00000E+00-1.00000E+00-1.00000E+00A(4th)6.63256E-034.37415E-03-2.45885E-03-3.24000E-03-3.01049E-03B(6th)-4.16630E-03-1.45698E-021.74612E-03-8.38586E-04-9.07994E-04C(8th)1.12810E-022.13269E-02-2.81667E-037.85686E-047.89686E-04D(10th)-2.26542E-02-1.93134E-025.50871E-03-5.88840E-04-5.17466E-04E(12th)2.05482E-021.10755E-02-6.85294E-032.44897E-041.94821E-04F(14th)-1.05946E-02-4.05230E-035.29029E-03-5.95046E-05-4.37875E-05G(16th)3.47665E-039.55153E-04-2.65849E-038.18170E-065.70349E-06H(18th)-7.68077E-04-1.44118E-049.06027E-04-5.81539E-07-3.94553E-07J(20th)1.17233E-041.34245E-05-2.14347E-041.65488E-081.12055E-08K(22th)-1.24159E-05-7.02063E-073.53684E-050.00000E+000.00000E+00L(24th)8.97222E-071.57471E-08-4.00461E-060.00000E+000.00000E+00M(26th)-4.22472E-080.00000E+002.97085E-070.00000E+000.00000E+00N(28th)1.16917E-090.00000E+00-1.30141E-080.00000E+000.00000E+00O(30th)-1.44334E-110.00000E+002.55166E-100.00000E+000.00000E+00.

[0272] FIG. 13c is a graph showing the spherical aberration of an optical system (1100) according to one embodiment of the present disclosure in the state of FIG. 13a, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray axis (OI) normalized, showing the change in longitudinal spherical aberration according to the wavelength of light. Longitudinal spherical aberration is shown for light with wavelengths of, for example, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM). FIG. 13d is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 13a of an optical system (1100) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 13e is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 13a of an optical system (1100) according to one embodiment of the present disclosure. FIG. 13f is a graph showing the spherical aberration of an optical system (1100) according to one embodiment of the present disclosure in the state of FIG. 13b, wherein the horizontal axis represents the coefficient of longitudinal spherical aberration and the vertical axis represents the distance from the ray 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, 656.3000 (NM, nanometer), 587.6000 (NM), 546.1000 (NM), 486.1000 (NM), and 435.8000 (NM), respectively.FIG. 13g is a graph showing astigmatic field curves for light of wavelength 546.1000 (NM) in the state of FIG. 13b of an optical system (11800) according to one embodiment of the present disclosure, where 'S' exemplifies a sagittal plane (solid line) and 'T' exemplifies a tangential plane (or meridional plane) (dotted line). FIG. 13h is a graph showing distortion for light of wavelength 546.1000 (NM) in the state of FIG. 13b of an optical system (1100) according to one embodiment of the present disclosure.

[0273] The optical system (or telephoto optical system) that implements a conventional telephoto camera can be miniaturized by using a reflective member, but there may be limitations to miniaturization. Even if the conventional telephoto camera is miniaturized, problems may arise where optical performance deteriorates, and if it is implemented to enable close-range shooting, the size of the optical system increases significantly, which limits the reduction of the distance to a subject (or minimum shooting distance) that can be shot at close range in the telephoto optical system.

[0274] The embodiments of the present disclosure are intended to solve at least the problems and / or disadvantages described above and to provide at least the advantages described below. However, the problems to be solved by the present disclosure are not limited to the problems mentioned above and may be determined in various ways without departing from the spirit and scope of the present disclosure.

[0275] The optical system of the telescope according to the embodiments of the present disclosure is miniaturized by using a reflective member, and the close-range shooting function is improved compared to the existing structure, so that the distance to a subject capable of close-range shooting (or minimum shooting distance) can be reduced compared to the existing structure.

[0276] According to embodiments of the present disclosure, an optical system can perform focus adjustment by linearly moving a second lens group positioned between a first optical member and a second optical member while the first lens group and the first and second optical members are fixed, and the distance traveled for focus adjustment (or focus travel distance) can be reduced compared to the case where other optical components (e.g., the first lens group) are moved at the same minimum shooting distance. The effects obtainable in the present disclosure are not limited to those mentioned above, and various effects identified directly or indirectly through the present disclosure may be provided.

[0277] According to an 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, 900, 1000, 1100). The optical system may include a first lens group (G1) comprising at least two lenses arranged along a light axis (OI) in a direction toward an object (O) side toward an image (I) side, a first optical member (M1) configured to change the path of light passing through the first lens group, a second lens group (G2) arranged to receive light passing through the first optical member and comprising at least one lens (L4 or L5), a second optical member (M2) configured to change the path of light passing through the second lens group, and an image sensor (IS) comprising an image plane (img) on ​​which an image of light passing through the second optical member is formed. The above second lens group can satisfy the following [Equation 1].

[0278] [Equation 1]

[0279] AG_Abe> 58

[0280] (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

[0281] According to one embodiment, the focus adjustment operation (auto focusing, AF) may be performed by moving the lens included in the second lens group.

[0282] According to one embodiment, the first lens (L1) closest to the subject among the lenses of the first lens group can satisfy the following [Equation 2].

[0283] [Equation 2]

[0284] 1.5 < EFL / F1 < 3.9

[0285] (Here, F1 is the focal length of the first lens, and EFL is the combined focal length of the optical system).

[0286] According to one embodiment, the first lens group can satisfy the following [Equation 3].

[0287] [Equation 3]

[0288] 5.5 < OTL / 1G_T < 8.8

[0289] (Here, OTL is the distance from the vertex of the subject side surface (S2) of the first lens (L1) closest to the subject side among the lenses of the first lens group to the imaging plane (img) of the image sensor (IS), and 1G_T is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface (S7; S9) of the lens (L3; L4) closest to the image side among the lenses of the first lens group).

[0290] According to one embodiment, the optical system can satisfy the following [Equation 4].

[0291] [Equation 4]

[0292] 0.1 < EFL / AF_F < 2.0

[0293] (Here, AF_F is the focal length of the second lens group, and EFL is the combined focal length of the optical system).

[0294] According to one embodiment, the first lens (L1) closest to the subject among the lenses of the first lens group has a positive refractive power, and the subject side surface (S2) of the first lens may be convex toward the subject.

[0295] According to one embodiment, the first optical member may include a prism configured to reflect light that has passed through the first lens group at least once and transmit it to the second lens group.

[0296] According to one embodiment, the second optical member may include a prism configured to reflect light that has passed through the second lens group at least once and transmit it to the image sensor.

[0297] According to one embodiment, the second lens group may include a lens (L4; L5) made of glass, wherein at least one of the subject side surface (S10; S12) or image side surface (S11; S13) is aspherical.

[0298] According to one embodiment, the optical system may further include an aperture (sto) positioned around the subject side surface (S8) of the first optical member.

[0299] According to one embodiment, the second lens group may include at least one lens having a shape in which a portion of the edge is cut off.

[0300] According to an embodiment of the present disclosure, an optical system (300, 400, 500, 600, 700, 800, 900, 1000, 1100) may be provided. The optical system may include a first lens group (G1) comprising at least two lenses arranged along a light axis (OI) in a direction from the object (O) side toward the image (I) side, a first optical member (M1) configured to change the path of light passing through the first lens group, a second lens group (G2) arranged to receive light passing through the first optical member and comprising at least one lens (L4 or L5), a second optical member (M2) configured to change the path of light passing through the second lens group, and an image sensor (IS) comprising an image plane (img) on ​​which an image of light passing through the second optical member is formed. The above second lens group can satisfy the following [Equation 1].

[0301] [Equation 1]

[0302] AG_Abe> 58

[0303] (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

[0304] According to one embodiment, the focus adjustment operation (auto focusing, AF) may be performed by moving the lens included in the second lens group.

[0305] According to one embodiment, the first lens (L1) can satisfy the following [Equation 2].

[0306] [Equation 2]

[0307] 1.5 < EFL / F1 < 3.9

[0308] (Here, F1 is the focal length of the first lens, and EFL is the combined focal length of the optical system).

[0309] According to one embodiment, the first lens group can satisfy the following [Equation 3].

[0310] [Equation 3]

[0311] 5.5 < OTL / 1G_T < 8.8

[0312] (Here, OTL is the distance from the vertex of the subject side surface (S2) of the first lens (L1) to the imaging plane (img) of the image sensor (IS), and 1G_T is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface (S7; S9) of the lens (L3; L4) closest to the image side among the lenses of the first lens group).

[0313] According to one embodiment, the optical system can satisfy the following [Equation 4].

[0314] [Equation 4]

[0315] 0.1 < EFL / AF_F < 2.0

[0316] (Here, AF_F is the focal length of the second lens group, and EFL is the combined focal length of the optical system).

[0317] According to one embodiment, the first optical member may include a prism configured to reflect light that has passed through the first lens group at least once and transmit it to the second lens group.

[0318] According to one embodiment, the second optical member may include a prism configured to reflect light that has passed through the second lens group at least once and transmit it to the image sensor.

[0319] According to one embodiment, the optical system may further include an aperture (sto) positioned around the subject side surface (S8) of the first optical member.

[0320] According to one embodiment, the second lens group may include at least one lens having a shape in which a portion of the edge is cut off.

[0321] It will be obvious to those skilled in the art that the optical system of the present disclosure and the electronic device including the optical system described above are not limited by the aforementioned embodiments and drawings, and that various substitutions, modifications, and changes are possible within the technical scope of the present disclosure.

[0322] Although the present disclosure has been described by way of example with respect to one embodiment, it should be understood that the embodiment is for illustrative purposes only and is not intended to limit the invention. It will be obvious to those skilled in the art that various changes in form and detailed configuration may be made without departing from the whole context of the present disclosure, including the appended claims and their equivalents.

[0323] An electronic device according to one embodiment of the present disclosure may be of various forms. The electronic device may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a consumer electronics device. The electronic device according to the embodiments of this document is not limited to the aforementioned devices.

[0324] The embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to a specific embodiment, and should be understood to include various modifications, equivalents, or substitutions of said embodiment. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0325] As used in one embodiment of this document, the term “module” may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit, for example. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0326] One embodiment of the present document may be implemented as software (e.g., program (140)) comprising one or more instructions stored in a storage medium (e.g., internal memory (136) or external memory (138)) readable by a machine (e.g., electronic device (101)). For example, a processor (e.g., processor (120)) of the machine (e.g., electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to be operated to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' simply means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0327] According to one embodiment, the method according to one embodiment of the present disclosure may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read only memory (CD-ROM)) or an application store (e.g., 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.

[0328] According to one embodiment, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to one embodiment, one or more of the components or operations among the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to one embodiment, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

Claims

1. In an electronic device (101) comprising an optical system (300; 400; 500; 600; 700; 800; 900; 1000; 1100), The above optical system is, A first lens group (G1) comprising at least two lenses arranged along a ray axis (OI) in a direction from the object (O) side toward the image (I) side; A first optical member (M1) configured to change the path of light passing through the first lens group; A second lens group (G2) arranged to receive light passing through the first optical member and including at least one lens (L4; L5); A second optical member (M2) configured to change the path of light passing through the second lens group; and The image sensor (IS) includes an image plane (img) on ​​which an image of light passing through the second optical member is formed, and The above second lens group is an electronic device satisfying the following [Equation 1] [Equation 1] AG_Abe> 58 (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

2. In Paragraph 1, An electronic device configured to perform auto-focusing (AF) by moving a lens included in the second lens group.

3. In Paragraph 1 or 2, The first lens (L1) closest to the subject side among the lenses of the first lens group is an electronic device satisfying the following [Equation 2]. [Equation 2] 1.5 < EFL / F1 < 3.9 (Here, F1 is the focal length of the first lens, and EFL is the combined focal length of the optical system).

4. In any one of paragraphs 1 to 3, The above first lens group is an electronic device satisfying the following [Equation 3]. [Equation 3] 5.5 < OTL / 1G_T < 8.8 (Here, OTL is the distance from the vertex of the subject side surface (S2) of the first lens (L1) closest to the subject side among the lenses of the first lens group to the imaging plane (img) of the image sensor (IS), and 1G_T is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface (S7; S9) of the lens (L3; L4) closest to the image side among the lenses of the first lens group).

5. In any one of paragraphs 1 through 4, The above optical system is an electronic device satisfying the following [Equation 4]. [Equation 4] 0.1 < EFL / AF_F < 2.0 (Here, AF_F is the focal length of the second lens group, and EFL is the combined focal length of the optical system).

6. In any one of paragraphs 1 through 5, An electronic device in which the first lens (L1) closest to the subject side among the lenses of the first lens group has positive refractive power and the subject side surface (S2) of the first lens is convex toward the subject.

7. In any one of paragraphs 1 through 6, An electronic device comprising a prism configured such that the first optical member reflects light passing through the first lens group at least once and transmits it to the second lens group.

8. In any one of paragraphs 1 through 7, An electronic device comprising a prism configured such that the second optical member reflects light passing through the second lens group at least once and transmits it to the image sensor.

9. In any one of paragraphs 1 through 8, The electronic device comprising a second lens group made of glass and a lens (L4; L5) having at least one of the subject side surface (S10; S12) or image side surface (S11; S13) aspherical.

10. In any one of paragraphs 1 through 9, The above optical system is an electronic device further comprising an aperture (sto) positioned around the subject side (S8) of the first optical member.

11. In any one of paragraphs 1 through 10, The electronic device comprising at least one lens having a shape in which a portion of the edge is cut off, wherein the second lens group described above comprises a second lens group.

12. In an optical system (300; 400; 500; 600; 700; 800; 900; 1000; 1100), A first lens group (G1) comprising at least two lenses arranged along a ray axis (OI) in a direction from the object (O) side toward the image (I) side, wherein the first lens (L1) among the lenses closest to the object side has positive refractive power and the object side surface (S2) is convex toward the object; A first optical member (M1) configured to change the path of light passing through the first lens group; A second lens group (G2) arranged to receive light passing through the first optical member and including at least one lens (L4; L5); A second optical member (M2) configured to change the path of light passing through the second lens group; and The image sensor (IS) includes an image plane (img) on ​​which an image of light passing through the second optical member is formed, and The above second lens group is an optical system satisfying the following [Equation 1] [Equation 1] AG_Abe> 58 (Here, AG_Abe is the Abbe number of one of at least one lens included in the second lens group).

13. In Paragraph 12, An optical system configured to perform auto-focusing (AF) by moving a lens included in the second lens group.

14. In Paragraph 12 or 13, The above first lens (L1) is an optical system satisfying the following [Equation 2] [Equation 2] 1.5 < EFL / F1 < 3.9 (Here, F1 is the focal length of the first lens, and EFL is the combined focal length of the optical system).

15. In any one of paragraphs 12 through 14, The above first lens group is an optical system satisfying the following [Equation 3] [Equation 3] 5.5 < OTL / 1G_T < 8.8 (Here, OTL is the center distance from the vertex of the subject side surface (S2) of the first lens (L1) to the image plane (img) of the image sensor (IS), and 1G_T is the distance from the vertex of the subject side surface of the first lens to the vertex of the image side surface (S7; S9) of the lens (L3; L4) closest to the image side among the lenses of the first lens group).

Images