Lens assembly and electronic device including the same

Abstract

According to an embodiment of the present disclosure, a lens assembly includes: an aperture; an image sensor including an imaging surface receiving at least a portion of the light incident through the aperture, and aligned with the aperture on an optical axis; and five lenses sequentially disposed between the aperture and the image sensor in the optical axis direction, the five lenses including: a first lens disposed closest to the aperture and having a positive refractive power; a second lens disposed at a second distance from the aperture and having a negative refractive power; a third lens disposed at a third distance from the aperture; a fourth lens disposed at a fourth distance from the aperture; and a fifth lens disposed closest to the image sensor and having positive refractive power. By satisfying [Conditional Expression] proposed by an embodiment, the lens assembly can be reduced in size and can be combined with a high-resolution image sensor to provide excellent wide-angle performance. Various other embodiments are also possible.

Description

Technical Field

[0001] Embodiments of the present disclosure relate to a lens assembly, for example, a lens assembly including a plurality of lenses, and to an electronic device including the lens assembly. Background Art

[0002] Optical devices (e.g., cameras capable of capturing images or videos) have been widely used, and in recent years, digital cameras and video cameras having solid-state image sensors such as charge coupled devices (CCDs) or complementary metal oxide semiconductors (CMOSs) have become popular. Optical devices having solid-state image sensors (CCDs or CMOSs) have gradually replaced film-based optical devices because they allow images to be stored, copied, and moved more easily than film-based optical devices.

[0003] Recently, multiple optical devices, such as two or more selected optical devices among a close-up camera, a telephoto camera, and / or a wide-angle camera, have been installed in a single electronic device to improve the quality of a captured image and provide various visual effects to the captured image. For example, multiple cameras having different optical characteristics can be used to acquire an image of an object and synthesize the images of the object to obtain a high-quality captured image. Since electronic devices such as mobile communication terminals or smart phones are equipped with multiple optical devices (e.g., cameras) and thereby acquire high-quality captured images, they are gradually replacing electronic devices dedicated to a shooting function, such as a small digital camera, and are expected to replace high-performance cameras such as digital single-lens reflex cameras (e.g., DSLRs) in the future.

[0004] The above information is presented as background information only to assist with an understanding of the present disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with respect to the present disclosure. Summary of the invention

[0005] According to an embodiment of the present disclosure, a lens assembly includes: an aperture; an image sensor including an imaging plane receiving at least a portion of light incident through the aperture and aligned with the aperture on an optical axis; and five lenses sequentially arranged between the aperture and the image sensor along the direction of the optical axis, and including: a first lens disposed closest to the aperture and having a positive refractive power; a second lens disposed second far from the aperture and having a negative refractive power; a third lens disposed third far from the aperture; a fourth lens disposed fourth far from the aperture; and a fifth lens disposed closest to the image sensor and having a positive refractive power. The lens assembly satisfies the following conditional expressions 1, 2, and 3.

[0006] Conditional expression 1:

[0007]

[0008] Conditional expression 2:

[0009]

[0010] Conditional expression 3:

[0011] 90≤FOV≤110

[0012] Here, "OAL" is the distance between the object-side surface or the aperture-side surface of the first lens L1 and the imaging plane measured on the optical axis, "IH" is the maximum height of the imaging plane, "T12" is the gap between the first lens and the second lens measured on the optical axis, "T23" is the gap between the second lens and the third lens measured on the optical axis, "EFL" is the total focal length of the lens assembly, and "FOV" is the field of view of the lens assembly.

[0013] According to an embodiment of the present disclosure, an electronic device includes a lens assembly and a processor configured to use the lens assembly to acquire an image of an object. In an embodiment, the lens assembly includes: an aperture; an image sensor, including an imaging plane that receives at least a portion of light incident through the aperture and is aligned with the aperture on the optical axis; and five lenses, arranged sequentially between the aperture and the image sensor along the direction of the optical axis, and including: a first lens, which is arranged closest to the aperture and has a positive refractive power; a second lens, which is arranged second farthest from the aperture and has a negative refractive power; a third lens, which is arranged third farthest from the aperture; a fourth lens, which is arranged fourth farthest from the aperture; and a fifth lens, which is arranged closest to the image sensor and has a positive refractive power. The lens assembly satisfies the following conditional expressions 8, 9, and 10.

[0014] Conditional expression 8:

[0015]

[0016] Conditional expression 9:

[0017]

[0018] Conditional Expression 10

[0019] 90≤FOV≤110

[0020] Here, "OAL" is the distance between the object-side surface or the aperture-side surface of the first lens L1 and the imaging plane measured on the optical axis, "IH" is the maximum height of the imaging plane, "T12" is the gap between the first lens and the second lens measured on the optical axis, "T23" is the gap between the second lens and the third lens measured on the optical axis, "EFL" is the total focal length of the lens assembly, and "FOV" is the field of view of the lens assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above or other aspects, configurations and / or advantages of embodiments of the present disclosure will become apparent from the following detailed description with reference to the accompanying drawings.

[0022] Figure 1 is a block diagram illustrating electronic devices in a network environment according to an embodiment of the present disclosure.

[0023] Figure 2 is a block diagram illustrating an exemplary camera module according to an embodiment of the present disclosure.

[0024] Figure 3 is a perspective view showing a front surface of an electronic device according to an embodiment of the present disclosure.

[0025] Figure 4 The present invention is a diagram showing an embodiment of the present invention. Figure 3 A perspective view of the rear surface of an electronic device.

[0026] Figure 5 is a diagram illustrating a lens assembly according to an embodiment of the present disclosure.

[0027] Figure 6 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph of the spherical aberration of a lens assembly.

[0028] Figure 7 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph of the astigmatism of a lens assembly.

[0029] Figure 8 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph of the distortion rate of a lens assembly.

[0030] Fig. 9 is a diagram illustrating a lens assembly according to an embodiment of the present disclosure.

[0031] Fig.10 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph of the spherical aberration of a lens assembly.

[0032] Fig.11 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph of the astigmatism of a lens assembly.

[0033] Fig.12 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph of the distortion rate of a lens assembly.

[0034] Fig.13is a diagram illustrating a lens assembly according to an embodiment of the present disclosure.

[0035] Fig.14 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph of the spherical aberration of a lens assembly.

[0036] Fig.15 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph of the astigmatism of a lens assembly.

[0037] Fig.16 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph of the distortion rate of a lens assembly.

[0038] Fig.17 is a diagram illustrating a lens assembly according to an embodiment of the present disclosure.

[0039] Fig.18 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph of the spherical aberration of a lens assembly.

[0040] Fig.19 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph of the astigmatism of a lens assembly.

[0041] Fig. 20 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph of the distortion rate of a lens assembly.

[0042] Throughout the drawings, like reference numerals may be assigned to like parts, components and / or structures. DETAILED DESCRIPTION

[0043] A single miniaturized electronic device may include a standard camera, a wide-angle (or ultra-wide-angle) camera, a close-up camera, and / or a telephoto camera to obtain multiple images of an object and synthesize them into a high-quality image. Cameras or lens assemblies may be classified into standard cameras, wide-angle (or ultra-wide-angle) cameras, close-up cameras, and / or telephoto cameras according to their field of view (or focal length). Since a display large enough to provide a sufficiently large screen is mounted on a portable electronic device such as a smart phone, portability can be ensured by reducing the thickness or weight of the electronic device. The lens assembly in a folding structure using a refractive member (or reflective member) can provide good telephoto performance when mounted on a miniaturized electronic device because it has a high degree of design freedom in the arrangement of (multiple) lenses or image sensors. However, as the performance of the image sensor becomes more advanced, for example, as it becomes larger or has higher pixels, it may be difficult to ensure the corresponding wide-angle performance. For example, when the effective diameter of the (multiple) lens increases or a larger number of lenses are used, a wide-angle performance corresponding to a high-performance image sensor can be achieved, but it may be difficult to mount the (multiple) lens on a miniaturized electronic device.

[0044] Embodiments of the present disclosure are intended to at least address the above-mentioned problems and / or disadvantages and to provide at least the advantages described below, and may provide a miniaturized lens assembly and / or an electronic device including the miniaturized lens assembly for providing wide-angle performance (e.g., achieving a field of view of approximately 100 degrees) that is improved enough to meet the performance requirements of high-performance image sensors.

[0045] Embodiments of the present disclosure may provide a lens assembly for facilitating control of optical performance (eg, flare or aberration correction) and / or an electronic device including the lens assembly.

[0046] The technical objectives achieved by the present disclosure are not limited to those mentioned above, and those skilled in the art can clearly understand other unmentioned technical objectives from the following description.

[0047] The following description of the accompanying drawings can provide an understanding of various exemplary embodiments of the present disclosure (including claims and their equivalents). The exemplary embodiments disclosed in the following description include various specific details to assist understanding, but will be considered as one of the various exemplary embodiments. Therefore, it will be understood by those skilled in the art that various changes and modifications may be made to the various embodiments described herein without departing from the scope and spirit of the present disclosure. In addition, for the sake of clarity and brevity, descriptions of well-known functions and configurations will be omitted.

[0048] The terms and words used in the following description and claims are not limited to their reference meanings, but can be used to clearly and consistently describe the embodiments of the present disclosure. Therefore, it is apparent to those skilled in the art that the following description of various embodiments of the present disclosure, which are intended to be consistent with the claims, is provided for illustrative purposes only and not for limiting purposes.

[0049] Unless the context clearly dictates otherwise, it should be understood that the singular expressions "a", "an", and "the" include plural referents. Thus, for example, "a component surface" may mean including one or more of the surfaces of the component.

[0050] Figure 1 1 is a block diagram showing an electronic device 101 in a network environment 100 according to an embodiment of the present disclosure. Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with at least one of the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a user identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the above components (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. In some embodiments, some of the above-described components (eg, sensor module 176, camera module 180, or antenna module 197) may be implemented as a single integrated component (eg, display module 160).

[0051] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 connected to the processor 120, and may perform various data processing or calculations. According to an embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., sensor module 176 or communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resultant data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent or combined with the main processor 121. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be adapted to consume less power than the main processor 121, or adapted to be dedicated to a specific function. The auxiliary processor 123 may be implemented separately from the main processor 121, or as part of the main processor 121.

[0052] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 (rather than the main processor 121) may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 180 or a communication module 190) that is functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. For example, such learning may be performed by the electronic device 101 where the artificial intelligence is executed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, for example. The artificial intelligence model may include multiple artificial neural network layers. The 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), or a deep Q network or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0053] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile memory 134.

[0054] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0055] The input module 150 may receive commands or data to be used by other components (e.g., the processor 120) of the electronic device 101 from outside (e.g., a user) of the electronic device 101. 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).

[0056] The sound output module 155 can output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. Depending on the embodiment, the receiver can be implemented as a separate part from the speaker, or as part of the speaker.

[0057] The display module 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display device 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display module 160 may include a touch sensor adapted to detect a touch or a pressure sensor adapted to measure the strength of a force caused by a touch.

[0058] The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0059] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0060] The interface 177 may support one or more specific protocols to be used to connect the electronic device 101 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0061] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. According to an embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0062] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0063] The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0064] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0065] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0066] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can identify and authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0067] The wireless communication module 192 can support 5G networks after 4G networks and next-generation communication technologies (e.g., new radio (NR) access technology). NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., millimeter wave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., a second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0068] The antenna module 197 may transmit or receive a signal or power to or from the outside of the electronic device 101 (e.g., an external electronic device). According to an embodiment, the antenna module 197 may include an antenna including a radiating element formed of a conductive material or a conductive pattern formed in or on a substrate (e.g., a printed circuit board (PCB)). According to an 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 scheme used in a communication network (such as the first network 198 or the second network 199) may be selected from the plurality of antennas by, for example, the communication module 190 (e.g., the wireless communication module 192). A signal or power may then be transmitted or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, another component (e.g., a radio frequency integrated circuit (RFIC)) other than the radiating element may be additionally formed as part of the antenna module 197.

[0069] According to various embodiments, the antenna module 197 may form a millimeter wave antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and a plurality of antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., millimeter wave band), and the plurality of antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

[0070] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0071] According to an embodiment, a command or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. Each of the electronic device 102 or the electronic device 104 may be a device of the same type as the electronic device 101, or a device of a different type from the electronic device 101. According to an embodiment, all or some operations to be executed in the electronic device 101 may be executed in one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically execute a function or service or should execute a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service instead of executing the function or service, or the electronic device 101 may request the one or more external electronic devices to execute at least part of the function or service in addition to executing the function or service. The one or more external electronic devices receiving the request may execute at least part of the requested function or service, or execute another function or another 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 at least a partial reply to the request in the case of further processing the result or in the case of not further processing the result. To this end, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology or client-server computing technology, for example, may be used. The electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In an 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 an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart homes, smart cities, smart cars or health care) based on 5G communication technology or IoT-related technologies.

[0072] Figure 2 FIG. 2 is a diagram showing a camera module 280 (eg, Figure 1 200 of the camera module 180). Figure 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 an embodiment, the lens assembly 210 may include an image sensor 230. The lens assembly 210 may collect light emitted or reflected from an object whose image is to be captured. The lens assembly 210 may include one or more lenses. According to an 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., viewing angle, focal length, autofocus, f-number, or optical zoom), or at least one lens assembly may have one or more lens properties different from those of another lens assembly. The lens assembly 210 may include, for example, a wide-angle lens or a telephoto lens.

[0073] The flash 220 may emit light, wherein the emitted light is used to enhance light reflected from an object. According to an embodiment, the flash 220 may include one or more light emitting diodes (LEDs) (e.g., red, green, blue (RGB) LEDs, white LEDs, infrared (IR) LEDs, or ultraviolet (UV) LEDs) or xenon lamps. The image sensor 230 may acquire an image corresponding to an object by converting light emitted or reflected from an object and transmitted through the lens assembly 210 into an electrical signal. According to an embodiment, the image sensor 230 may include one image sensor selected from a plurality of image sensors having different properties (e.g., an RGB sensor, a black and white (BW) 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 charge coupled device (CCD) sensor or a complementary metal oxide semiconductor (CMOS) sensor.

[0074] The image stabilizer 240 may move the image sensor 230 or at least one lens included in the lens assembly 210 in a specific direction, or control an operational property of the image sensor 230 (e.g., adjust the readout timing) in response to the movement of the camera module 280 or the electronic device 201 including the camera module 280. In this way, at least a portion of the negative effects (e.g., image blur) generated due to the movement of the image being captured is allowed to be compensated. According to an embodiment, the image stabilizer 240 may sense such movement of the camera module 280 or the electronic device (e.g., the electronic device 101) using a gyroscope sensor (not shown) or an acceleration sensor (not shown) arranged inside or outside the camera module 280. According to an embodiment, the image stabilizer 240 may be implemented as, for example, an optical image stabilizer. The memory 250 may at least temporarily store at least a portion of the image acquired via the image sensor 230 for subsequent image processing tasks. For example, if multiple images are captured quickly or image capture is delayed due to shutter lag, the acquired raw images (eg, Bayer pattern images, high resolution images) may be stored in the memory 250 and may be accessed via Figure 1 Then, if a specified condition is met (e.g., by a user's input or a system command), at least a portion of the original image stored in the memory 250 may be acquired and processed by, for example, the image signal processor 260. According to an embodiment, the memory 250 may be configured as a memory (e.g., Figure 1 The memory 250 may be at least a portion of the memory 130 in the memory, or the memory 250 may be configured as a separate memory that operates independently of the memory 130.

[0075] The image signal processor 260 may perform one or more image processing on an image acquired via the image sensor 230 or an image stored in the memory 250. The one or more image processing may include, for example, depth map generation, three-dimensional (3D) modeling, panoramic image generation, feature point extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the image signal processor 260 may perform control (e.g., exposure time control or readout timing control) on at least one of the components included in the camera module 280 (e.g., the image sensor 230). The image processed by the image signal processor 260 may be stored back in the memory 250 for further processing, or the image may be provided to an external component outside the camera module 280 (e.g., Figure 1 According to an embodiment, the image signal processor 260 may be configured as a processor (eg, Figure 1The image signal processor 260 may be configured as at least a part of the processor 120 in the display module 160, or the image signal processor 260 may be configured 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, the at least one image processed by the image signal processor 260 may be displayed as it is by the processor 120 via the display module 160, or the at least one image may be displayed after being further processed.

[0076] According to an embodiment, an electronic device (e.g., Figure 1 The electronic device 101 in FIG. 1 may include a plurality of camera modules 180 having different properties or functions. In this case, at least one camera module 180 of the plurality of camera modules 180 may form, for example, a wide-angle camera, and at least another camera module 180 of the plurality of camera modules 180 may form a telephoto camera. Similarly, at least one camera module 180 of the plurality of camera modules 180 may form, for example, a front camera, and at least another camera module 180 of the plurality of camera modules 180 may form a rear camera.

[0077] The electronic device according to an embodiment of the present disclosure may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0078] It should be understood that the embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that the nouns in the singular form corresponding to the term may include one or more things unless the relevant context clearly indicates otherwise. As used herein, each of the 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 include any one or all possible combinations of the items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0079] As used in connection with various embodiments of the present disclosure, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0080] Various embodiments of the present disclosure may be implemented as software (e.g., a program) including one or more instructions stored in a storage medium (e.g., an internal memory or an external memory) that can be read by a machine (e.g., an electronic device). For example, under the control of a processor, a processor (e.g., a processor) of the machine (e.g., an electronic device) may call at least one of the one or more instructions stored in the storage medium and execute the at least one instruction with or without the use of one or more other components. This enables the machine to operate to perform at least one function according to at least one instruction called. The one or more instructions may include code generated by a compiler or code that can be run by an interpreter. A machine-readable storage medium may be provided in the form of a non-transitory storage medium. Among them, the term "non-transitory" only means that the storage medium is a tangible device and does not include a signal (e.g., an electromagnetic wave), but the term does not distinguish between data being semi-permanently stored in a storage medium and data being temporarily stored in a storage medium.

[0081] According to an embodiment, the method according to various embodiments of the present disclosure may be included and provided 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 released in the form of a machine-readable storage medium (e.g., a compact disk read-only memory (CD-ROM)), or may be downloaded via an application store (e.g., Play Store TM ) The computer program product may be published (e.g., downloaded or uploaded) online, or the computer program product may be distributed (e.g., downloaded or uploaded) directly between two user devices (e.g., smart phones). If published online, at least part of the computer program product may be temporarily generated, or at least part of the computer program product may be at least temporarily stored in a machine-readable storage medium (such as a memory of a manufacturer's server, an application store's server, or a forwarding server).

[0082] According to an embodiment, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities, and some entities in the multiple entities may be detachably arranged in different components. According to an embodiment, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as a corresponding component in the multiple components before integration. According to an embodiment, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

[0083] Figure 3 FIG. 2 is a diagram showing an electronic device 300 (eg, Figure 1 A three-dimensional view of the front surface of the electronic device 101). Figure 4 is a perspective view showing a rear surface of the electronic device 300 according to an embodiment of the present disclosure.

[0084] Reference Figure 3 and Figure 4 According to the electronic device 300 of the embodiment (eg, Figure 1 The electronic device 101 in the embodiment may include a housing 310, the housing 310 including a first surface (or front surface) 310A, a second surface (or rear surface) 310B, and a side surface 310C surrounding a space between the first surface 310A and the second surface 310B. In an embodiment (not shown), the housing 310 may refer to a housing formed Figure 3 According to an embodiment, at least a portion of the first surface 310A, the second surface 310B, and the side surface 310C may be formed by a front plate 302 (e.g., a glass plate or a polymer plate including various coatings) that is at least partially substantially transparent. In an embodiment, the front plate 302 may be coupled to the housing 310 to form an internal space with the housing 310. In an embodiment, the term "internal space" may refer to a portion of the housing 310 that accommodates a display 301 or a display 302 to be described later. Figure 1 The inner space of at least a portion of the display module 160 is formed.

[0085] According to an embodiment, the second surface 310B may be formed by a substantially opaque back plate 311. The back plate 311 may be formed by, for example, coated or colored glass, ceramic, polymer, metal (e.g., aluminum, stainless steel (STS) or magnesium), or a combination of at least two of these materials. The side surface 310C may be coupled to the front plate 302 and the back plate 311 and formed by a side frame structure (or "side member") 318 comprising a metal and / or a polymer. In an embodiment, the back plate 311 and the side frame structure 318 may be integrally formed and comprise the same material (e.g., a metal material such as aluminum).

[0086] In the illustrated embodiment, the front plate 302 may include two first regions 310D, which are bent from the first surface 310A toward the rear plate 311 at the two long edge ends of the front plate 302 and extend seamlessly. Figure 4 ), the rear plate 311 may include two second areas 310E, which are bent from the second surface 310B toward the front plate 302 at the two long edge ends of the rear plate 311 and extend seamlessly. In an embodiment, the front plate 302 (or the rear plate 311) may include only one of the first areas 310D (or the second areas 310E). In an embodiment, some of the first areas 310D or the second areas 310E may not be included. In these embodiments, when viewed from the side of the electronic device 101, the side frame structure 318 may have a first thickness (or width) on a side surface that does not include any of the above-mentioned first areas 310D or second areas 310E (for example, a side surface on which the connector hole 308 is formed), and a second thickness that is less than the first thickness on a side surface that includes the above-mentioned first area 310D or second area 310E (for example, a side surface on which the key input device 317 is provided).

[0087] According to an embodiment, the electronic device 300 may include a display 301, audio modules 303, 307, and 314, sensor modules 304, 316, and 319, camera modules 305, 312, and 313 (eg, Figure 1 or Figure 2 180 or 280 in the electronic device 101), a key input device 317, a light emitting element 306, or at least one of the connector holes 308 and 309. In an embodiment, the electronic device 101 may not have at least one of the components (e.g., the key input device 317 or the light emitting element 306), or may additionally include other components.

[0088] Display 301 (eg, Figure 1The display module 160 in the front panel 302 may be visually exposed, for example, through a major portion of the front panel 302. In an embodiment, at least a portion of the display 301 may be exposed through the front panel 302 through the first surface 310A and the first region 310D forming the side surface 310C. In an embodiment, the corners of the display 301 may be formed to be substantially the same shape as the shape of the adjacent perimeter of the front panel 302. In an embodiment (not shown), the gap between the perimeter of the display 301 and the perimeter of the front panel 302 may be substantially equal to increase the visually exposed area of ​​the display 301.

[0089] In an embodiment (not shown), a recess or an opening may be formed in a portion of a screen display area (e.g., an active area) or an area outside the screen display area (e.g., an inactive area), and an audio module 314 (e.g., an audio module 316) aligned with the recess or the opening may be included. Figure 1 audio module 170 in), sensor module 304 (e.g., Figure 1 At least one of the sensor module 176 in the display 301, the camera module 305, or the light emitting element 306. In an embodiment (not shown), at least one of the audio module 314, the sensor module 304, the camera module 305 (e.g., an under-screen camera (UDC)), the fingerprint sensor 316, or the light emitting element 306 may be included on the rear surface of the screen display area of ​​the display 301. In an embodiment (not shown), the display 301 may be combined with or adjacent to a touch sensing circuit, a pressure sensor capable of measuring touch intensity (pressure), and / or a digitizer that detects a magnetic field-based stylus. In an embodiment, at least some of the sensor modules 304 and 319 and / or at least some of the key input devices 317 may be provided in the first area 310D and / or the second area 310E.

[0090] The audio modules 303, 307, and 314 may include a microphone hole 303 and speaker holes 307 and 314. A microphone for acquiring external sound may be provided in the microphone hole 303, and in an embodiment, a plurality of microphones may be provided to detect the direction of the sound. The speaker holes 307 and 314 may include an external speaker hole 307 and a receiver hole 314 for talking. In an embodiment, the speaker holes 307 and 314 and the microphone hole 303 may be implemented as a single hole, or a speaker (e.g., a piezoelectric speaker) may be included without the speaker holes 307 and 314.

[0091] The sensor modules 304, 316, and 319 may generate an electrical signal or data value corresponding to an internal operating state or an external environmental state of the electronic device 300. The sensor modules 304, 316, and 319 may include, for example, a first sensor module 304 (e.g., a proximity sensor) and / or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on the first surface 310A of the housing 310, a third sensor module 319 (e.g., an HRM sensor) disposed on the second surface 310B of the housing 310, and / or a fourth sensor module 316 (e.g., a fingerprint sensor). The fingerprint sensor may be disposed on the second surface 310B of the housing 310 as well as the first surface 310A (e.g., the display 301). The electronic device 300 may further include a sensor module not shown, such as at least one of a gesture sensor, a gyroscope sensor, an air pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an IR sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0092] The camera modules 305, 312 and 313 may include a front camera module 305 disposed on a first surface 310A of the electronic device 101 and a rear camera module 312 and / or a flash 313 disposed on a second surface 310B. The camera modules 305 and 312 may include one or more lenses, an image sensor and / or an ISP. The flash 313 may include, for example, a light emitting diode (LED) or a xenon lamp. In an embodiment, two or more lenses (IR camera, wide-angle lens and telephoto lens) and an image sensor may be arranged on one surface of the electronic device 300.

[0093] The key input device 317 may be provided on the side surface 310C of the housing 310. In an embodiment, the electronic device 300 may not include some or any of the key input devices 317, and the key input devices 317 not included may be implemented in other forms such as soft keys on the display 301. In an embodiment, the key input device may include a sensor module 316 provided on the second surface 310B of the housing 310.

[0094] The light emitting element 306 may be disposed, for example, on the first surface 310A of the housing 310. The light emitting element 306 may provide, for example, status information about the electronic device 300 in the form of light. In an embodiment, the light emitting element 306 may provide, for example, a light source that cooperates with the operation of the front camera module 305. The light emitting element 306 may include, for example, an LED, an IR LED, and a xenon lamp.

[0095] The connector holes 308 and 309 may include a first connector hole 308 and / or a second connector hole (e.g., a headphone jack) 309, wherein the first connector hole 308 is capable of accommodating a connector (e.g., a USB connector) for sending power and / or data to an external electronic device and receiving power and / or data from an external electronic device, and the second connector hole 309 is capable of accommodating a connector for sending audio signals to an external electronic device and receiving audio signals from an external electronic device.

[0096] Figure 5 is a diagram illustrating a lens assembly 400 according to an embodiment of the present disclosure. Figure 6 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph of spherical aberration of lens assembly 400 is shown. Figure 7 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph of astigmatism of lens assembly 400 is shown. Figure 8 The present invention is a diagram showing an embodiment of the present invention. Figure 5 A graph showing the distortion rate of the lens assembly 400.

[0097] Figure 6 4 is a graph showing the spherical aberration of the lens assembly 400 according to an embodiment of the present disclosure and shows the change of the longitudinal spherical aberration according to the wavelength of light, wherein the horizontal axis represents the coefficient of the longitudinal spherical aberration and the vertical axis represents the normalized distance from the optical axis. For example, the longitudinal spherical aberration is shown for each of the light with a wavelength of 656.2700 nanometers (NM) (e.g., red), the light with a wavelength of 587.5600 NM (e.g., yellow), the light with a wavelength of 546.0700 NM, the light with a wavelength of 486.1300 NM (e.g., blue), and the light with a wavelength of 435.8300 NM. Figure 7 is a graph showing astigmatism of the lens assembly 400 according to an embodiment of the present disclosure for light having a wavelength of 546.0700 nm, wherein “S” represents a sagittal plane and “T” represents a tangential plane. Figure 8 is a graph showing the distortion rate of the lens assembly 400 for light having a wavelength of 546.0700 nm according to an embodiment of the present disclosure.

[0098] Reference Figures 5 to 8 , according to one of the various embodiments of the present disclosure, the lens assembly 400 (eg, Figure 2 The lens assembly 210 in the embodiment may include an aperture Stop, a plurality of (eg, at least five) lenses L1, L2, L3, L4, and L5, and / or an image sensor I (eg, an imaging plane img or Figure 2The image sensor 230 in FIG. 1 ). The image sensor 1 or 230 may include an imaging plane img that receives at least a portion of the light incident through the aperture Stop and / or focused by the lenses L1, L2, L3, L4, and L5. According to an embodiment, the aperture Stop, the lenses L1, L2, L3, L4, and L5, and / or the image sensor 1 or 230 may be substantially aligned on the optical axis O. “Aligned on the optical axis O” may be understood as an area through which light incident from the aperture Stop or the lenses L1, L2, L3, L4, and L5 on the imaging plane of the image sensor 1 or 230 passes or the imaging plane img of the image sensor 1 or 230 is aligned on the optical axis O.

[0099] According to an embodiment, the lens assembly 400 may further include an IR cut filter F. The IR cut filter F may block light (e.g., IR light) in a wavelength band that is invisible to the naked eye of a user but is detected by the film or image sensor I. In an embodiment, depending on the lens assembly 400 or an electronic device (e.g., Figures 1 to 4 For the purpose of detecting IR light in the electronic devices 101, 102, 104 and 300 in the optical system, the IR cut filter F may be replaced with a bandpass filter that transmits IR light and blocks visible light. For example, the IR cut filter F may be replaced with a bandpass filter that transmits IR light in the lens assembly 400 or the electronic device for detecting IR light.

[0100] According to an embodiment, the IR cut filter F and / or the image sensor 1 or 230 may be described as a component separated from the lens assembly 400. For example, the IR cut filter F and / or the image sensor 1 or 230 may be installed in an electronic device (e.g., Figures 1 to 4 electronic device 101, 102, 104 or 300) or an optical device (e.g., Figure 1 or Figure 2 The camera module 180 or 280 in the embodiment of the present invention is a camera module 180 or 280 in the embodiment of the present invention, and the plurality of lenses L1, L2, L3, L4 and L5 included in the lens assembly 400 may be mounted on the electronic device or the optical device in alignment with the IR cut filter F and / or the image sensor 1 or 230 on the optical axis O. In an embodiment, at least one of the lenses L1, L2, L3, L4 and L5 may reciprocate along the direction of the optical axis O, and the electronic device (e.g., Figure 1 or Figure 4 The electronic device 101, 102, 104 or 300) or Figure 1 The processor 120 may perform focus adjustment or focal length adjustment by reciprocating at least one of the lenses L1, L2, L3, L4, and L5. In an embodiment, the lens assembly 400 may be configured to Figure 3 or Figure 4 One of the camera modules 305, 312 and 313 in.

[0101] According to an embodiment, a plurality of lenses L1, L2, L3, L4, and L5 may include a first lens L1, a second lens L2, a third lens L3, a fourth lens L4, and / or a fifth lens L5 sequentially arranged between the aperture Stop and the image sensor I along the direction of the optical axis O. Each of the lenses L1, L2, L3, L4, and L5 may include an object-side surface and an image sensor-side surface. When describing the following embodiments, it should be noted that for the sake of simplification of the drawings, some of the object-side surfaces and the image sensor-side surfaces of the lenses L1, L2, L3, L4, and L5 are not assigned reference numerals. Reference numerals not assigned to lens surfaces in the drawings will be easily understood from the table of lens data in the embodiments described later.

[0102] In the detailed description below, the shape of the object-side surface or the image sensor-side surface of lenses L1, L2, L3, L4, and L5 may be described using the terms “concave” or “convex”. Such reference to the shape of the lens surface may describe the shape of the point intersecting the optical axis O or the shape of the paraxial region intersecting the optical axis O. When it is said that “the object-side surface is concave”, this may describe a shape in which the center of the radius of curvature of the object-side surface is positioned closer to the object S. When it is said that “the object-side surface is convex”, this may describe a shape in which the center of the radius of curvature of the object-side surface is positioned closer to the image sensor I. When it is said that “the image sensor-side surface is concave”, this may describe a shape in which the center of the radius of curvature of the image sensor-side surface is positioned closer to the image sensor I. When it is said that “the image sensor-side surface is convex”, this may describe a shape in which the center of the radius of curvature of the image sensor-side surface is positioned closer to the object S. For example, in Figure 5 , the object-side surface S2 of the first lens L1 may be understood as convex, and the object-side surface S4 of the second lens L2 may be understood as concave.

[0103] According to an embodiment, the first lens L1 (which is the lens disposed closest to the object S or the aperture Stop) may have a positive refractive power. In an embodiment, the first lens L1 may be a meniscus lens convex toward the object S. For example, the object-side surface S2 of the first lens L1 may be convex, and its image sensor-side surface S3 including an inflection point may be concave. The "inflection point" may refer to a point at which the radius of curvature changes in sign from negative (-) to positive (+) or from positive (+) to negative (-), and each of the lenses L1, L2, L3, L4, and L5 may include an inflection point on at least one of its object-side surface or image sensor-side surface. Since each of the lenses L1, L2, L3, L4, and L5 includes (multiple) inflection points, the lens assembly 400 may have improved wide-angle performance (e.g., a field of view of approximately 100 degrees). In an embodiment, since each of the lenses L1, L2, L3, L4, and L5 includes (a plurality of) inflection points, optical performance (e.g., aberration correction) in a paraxial region or a peripheral region can be easily controlled, and the lens assembly 400 can be miniaturized. Figure 5 In the diagram, the inflection point is represented by the symbol " ◆ ” and is not designated by a reference numeral. In an embodiment, the first lens L1 may be a plastic aspherical lens having a refractive index of about 1.55 or less. Since the first lens L1 has a meniscus shape convex toward the object S, the overall length of the lens assembly 400 (e.g., a distance from an object-side surface S2 of the first lens L1 to an imaging plane img) may be reduced. In an embodiment, since the first lens L1 includes an inflection point at least on an image sensor-side surface S3, the first lens L1 may have a small effective diameter and achieve good optical performance in an edge region.

[0104] According to an embodiment, the second lens L2 is arranged second farthest from the aperture Stop and may have a negative refractive power. In an embodiment, the second lens L2 may have a concave shape on both the object side surface S4 and the image sensor side surface S5, and may include an inflection point on the image sensor side surface S5. The second lens L2 may have a small effective diameter and achieve good optical performance in the edge area by including (multiple) inflection points. In an embodiment, the second lens L2 may be a plastic aspherical lens having a refractive index of about 1.66 or more.

[0105] According to an embodiment, the third lens L3 is arranged to be the third farthest from the aperture Stop and may include an inflection point on each of the object side surface S6 and the image sensor side surface S7. The third lens L3 may have a positive refractive power and may have a negative refractive power according to an embodiment. In an embodiment, the third lens L3 may have a shape convex toward the image sensor I, for example, it may be a meniscus lens having a concave object side surface S6 and a convex image sensor side surface S7. Since the third lens L3 is implemented as a meniscus shape while having a positive refractive power, an environment can be provided in which the effective diameter of the lens (e.g., the fourth lens L4 and / or the fifth lens L5) between the third lens L3 and the image sensor I can be reduced, and good optical performance can be achieved in the edge area. In an embodiment, the third lens L3 may be a plastic aspherical lens having a refractive index of about 1.55 or less.

[0106] According to an embodiment, the fourth lens L4 is disposed fourth farthest from the aperture Stop and may include an inflection point on each of the object side surface S8 and the image sensor side surface S9. The fourth lens L4 may have a negative refractive power, and may have a positive refractive power according to an embodiment. In an embodiment, the fourth lens L4 may have a shape convex toward the object S, for example, may be a meniscus lens having a convex object side surface S8 and a concave image sensor side surface S9. In an embodiment, the fourth lens L4 may be a plastic aspherical lens having a refractive index of about 1.66 or more.

[0107] According to an embodiment, the fifth lens L5 is a lens disposed closest to the image sensor I, and may include an inflection point on each of the object side surface S10 and the image sensor side surface S11. The fifth lens L5 may have positive refractive power and may have a shape convex toward the object S, for example, may be a meniscus lens having a convex object side surface S10 and a concave image sensor side surface S11. In an embodiment, the fifth lens L5 may be a plastic aspherical lens having a refractive index of about 1.55 or more. In an embodiment, an IR cutoff filter F may be disposed between the fifth lens L5 and the image sensor I. The above-mentioned refractive power or lens shape of the fourth lens L4 and the fifth lens L5 may contribute to optical performance control (e.g., astigmatism correction), for example, in an edge region, and suppress an increase in the angle of light incident on the imaging plane img from the edge region.

[0108] According to an embodiment, the aperture Stop is disposed closer to the object S than the lenses L1, L2, L3, L4, and L5, and may substantially define an area where light is incident on the lens assembly 400. For example, the lenses L1, L2, L3, L4, and L5 may be substantially disposed between the aperture Stop and the image sensor I, and focus the light incident through the aperture Stop and guide the light onto the image sensor I. In an embodiment, since the aperture Stop is disposed closer to the object S than the lenses L1, L2, L3, L4, and L5, wide-angle performance may be easily ensured even if the effective diameters of the lenses L1, L2, L3, L4, and L5 (e.g., the first lens L1 disposed first from the object S or closest to the aperture) are reduced. For example, since the aperture Stop is disposed closer to the object S than the lenses L1, L2, L3, L4, and L5, the lens assembly 400 may be miniaturized and have improved wide-angle performance. The configuration of these lenses L1, L2, L3, L4, and L5 and the arrangement of the aperture Stop can enable the lens assembly 400 to be miniaturized and / or have a small diameter, and provide wide-angle performance suitable for a high-pixel sensor (e.g., image sensor 1 or 230) with a maximum height of an imaging plane img of approximately 3.27 mm. For example, the lens assembly 400 can achieve a field of view of approximately 100 degrees while providing optical performance suitable for a high-performance image sensor of 50 million pixels or more.

[0109] According to an embodiment, the lens assembly 400 can be miniaturized while easily providing wide-angle performance. In an embodiment, since the aperture Stop of the lens assembly 400 is disposed closer to the object S than the lenses L1, L2, L3, L4, and L5, the lens assembly 400 can provide wide-angle performance while having a small diameter. In an embodiment, in an electronic device (e.g., Figures 1 to 4 In the electronic devices 101, 102, 104 and 300), a front camera (eg, Figure 3 The first camera 305 in the embodiment is configured to receive a signal transmitted through a display (eg, Figure 1 The display module 160 or Figure 3The front camera 400 may be configured to transmit light through at least a portion of a screen area of ​​a display 301 (e.g., an under-screen camera (UDC) area), an area around the screen area, a notch area extending inward or protruding inward from the screen area, and / or a perforated area that penetrates the screen area. Due to the arrangement of the front camera, the size (e.g., width) of the area around the screen area may increase, or the screen area may be encroached upon. In an embodiment, since the lens assembly 400 has a small diameter and / or achieves improved wide-angle performance, when it is set as a front camera, it may contribute to the miniaturization of the electronic device and / or suppress the screen area from being encroached upon. In an embodiment, when a front camera is implemented in an electronic device, the lens assembly 400 may provide an environment in which a high-performance image sensor can be utilized while providing improved wide-angle performance.

[0110] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 1 below.

[0111] Equation 1:

[0112]

[0113] In Equation 1, "OAL" may be a distance from the object-side surface S2 of the first lens L1 to the imaging plane img, which may be a distance measured on the optical axis O (hereinafter referred to as "total lens length"), and "IH" may be a height of the imaging plane img measured from the optical axis O to the edge of the imaging plane img or a maximum height among the distances. When the value calculated by Equation 1 is greater than 0.7, the total lens length may increase relative to the size of the image sensor I (e.g., the imaging plane img), making it difficult to miniaturize the lens assembly 400. When the calculated value of Equation 1 is less than 0.55, the lens assembly 400 may be miniaturized, but it may be difficult to ensure the setting space of the lenses L1, L2, L3, L4, and L5 or to correct aberrations. For example, by satisfying the conditions of Equation 1, the lens assembly 400 may be miniaturized to a degree that fully considers mass production while having good optical performance (e.g., wide-angle performance).

[0114] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 2 below.

[0115] Equation 2:

[0116]

[0117] In Equation 2, "T12" may be an air gap between the first lens L1 and the second lens L2 measured on the optical axis O, and "T23" may be an air gap between the second lens L2 and the third lens L3. In Equation 2, "EFL" may be an overall focal length of the lens assembly 400. When the calculated value of Equation 2 is greater than 0.05, the gap between the second lens L2 and the third lens L3 may increase, making it difficult to control the aberration of the edge light, and thus it is difficult to ensure the optical performance or the amount of light in the edge region. When the calculated value of Equation 2 is less than -0.05, the optical performance in the edge region may be easily ensured, but in a structure in which the lens assembly 400 has a small diameter, a structure such as a spacer may be provided between the first lens L1 and the second lens L2. When the spacer is provided, the flare phenomenon may increase, thereby reducing the quality of the captured image. For example, since the lens assembly 400 can ensure good optical performance in the edge region and does not include a spacer by satisfying the condition of Equation 2, the manufacturing cost may be reduced or the flare phenomenon may be improved.

[0118] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 3 below.

[0119] Equation 3:

[0120] 90≤FOV≤110

[0121] In Equation 3, "FOV" is the field of view of the lens assembly 400, and when the condition of Equation 3 is satisfied, the lens assembly 400 can ensure the optical performance or amount of light required in the edge region, and can be implemented as a small-diameter bright lens. For example, when the field of view FOV is greater than about 110 degrees, the lens assembly 400 may have difficulty in ensuring the optical performance or amount of light in the edge region, and when the field of view is less than about 90 degrees, the focal length may increase, making it difficult to implement a bright lens with an F number of 2.2 or less in a structure in which the lens assembly 400 has a small diameter.

[0122] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 4 below.

[0123] Equation 4:

[0124]

[0125] Here, "Y11" may be the effective radius of the object-side surface S2 of the first lens L1, and "Y22" may be the effective radius of the image sensor-side surface S5 of the second lens L2. As described above, "EFL" may be the total focal length of the lens assembly 400. When the calculated value of Equation 4 is greater than 0.16, it may be advantageous to ensure optical performance in the edge region. However, when the lens assembly 400 is implemented as a small-diameter structure, it is inevitable to use a spacer between the first lens L1 and the second lens L2. When the calculated value of Equation 4 is less than 0.05, the lens assembly 400 may be miniaturized and / or have a small diameter, but it may be difficult to ensure optical performance or light quantity in the edge region. For example, when the conditions of Equation 4 are satisfied, the lens assembly 400 may be miniaturized and / or have a small diameter while ensuring good optical performance and light quantity in the edge region.

[0126] According to an embodiment, by satisfying the condition of the following equation 5 regarding the Abbe number "Vd1" of the first lens L1 and the Abbe number "Vd2" of the second lens L2, the lens assembly 400 can be miniaturized while ensuring good optical performance, and the manufacturing cost of the lens assembly 400 can be reduced.

[0127] Equation 5:

[0128] 20≤Vd1-Vd2≤45

[0129] In an embodiment, when the calculated value of Equation 5 is greater than 45, optical performance can be easily ensured. However, when manufacturing lenses L1, L2, L3, L4, and L5 (e.g., first lens L1 and second lens L2), the use of plastic materials may be limited, thereby increasing manufacturing costs. When the calculated value of Equation 5 is less than 20, the difference in refractive index between first lens L1 and second lens L2 decreases, which may make miniaturization or aberration correction difficult.

[0130] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 6 below.

[0131] Equation 6:

[0132]

[0133] In Equation 6, "OAL" is the total lens length as described above, and "Tsi" may be the distance from the aperture Stop to the imaging plane img measured on the optical axis O. In an embodiment, when the calculated value of Equation 6 is greater than 1.05, the aperture Stop may be disposed closer to the image sensor I than the first lens L1. For example, when the calculated value of Equation 6 is greater than 1.05, the effective diameter of the first lens L1 should be large enough to ensure wide-angle performance, and thus it may be difficult to reduce the diameter of the lens assembly 400. When the calculated value of Equation 6 is less than 0.95, the aperture Stop is disposed closer to the object S than the first lens L1, but farther from the first lens L1. The resulting significant increase in the length of the lens assembly 400 or the camera in the direction of the optical axis O may make miniaturization difficult. In an embodiment, when the calculated value of Equation 6 is less than 0.95, the lens assembly 400 may have poor performance in ensuring the amount of light in the edge area. For example, by satisfying the condition of Equation 6, the lens assembly 400 may be reduced in size and / or may have a small diameter while providing good performance in terms of light quantity in edge regions.

[0134] According to an embodiment, the lens assembly 400 may satisfy the condition given by Equation 7 below.

[0135] Equation 7:

[0136]

[0137] In Equation 7, "BFL" is the distance between the image sensor side surface S11 of the lens (e.g., the fifth lens L5) closest to the image sensor I measured on the optical axis O and the imaging plane img, and "IH" is the maximum height of the imaging plane img as described above. When the conditions of Equation 7 are satisfied, the lens assembly 400 can be miniaturized within the range of ensuring mass production. For example, when the calculated value of Equation 7 is less than 0.25, it may be difficult to ensure the arrangement space of the IR cutoff filter F or the moving space of the lenses L1, L2, L3, L4 and L5 for focus adjustment. In an embodiment, when the calculated value of Equation 7 is greater than 0.45, the arrangement space and / or the moving space can be easily ensured, but it may be difficult to miniaturize the lens assembly 400 and to ensure a field of view of about 100 degrees.

[0138] According to an embodiment, when combined with a high-pixel image sensor having an imaging plane img with a maximum height of about 3.27 mm, the lens assembly 400 can provide excellent wide-angle performance with a field of view of about 100 degrees. In an embodiment, the aperture Stop can be set closer to the object S than the lenses L1, L2, L3, L4, and L5, so that the effective diameter of the first lens L1 or the second lens L2 can be easily reduced. For example, since the aperture Stop is set closer to the object S than the lenses L1, L2, L3, L4, and L5, and thus the lens assembly 400 has a small diameter, even if the lens assembly 400 is set to substantially face the display (e.g., Figure 1 The display module 160 or Figure 3 The display 301 in the display 301 is substantially in the same direction, and the screen area can also be suppressed from being encroached. In an embodiment, the gap between the first lens L1 and the second lens L2 is substantially equal to the gap between the second lens L2 and the third lens L3, which can facilitate fixing or assembling the lenses without using a spacer between the first lens L1 and the second lens L2 and / or between the second lens L2 and the third lens L3. For example, a flare phenomenon caused by a spacer can be suppressed, and the manufacturing cost can be reduced by not including a spacer.

[0139] According to an embodiment, the lens assembly 400 may have a focal length of approximately 2.733 mm, an F-number of approximately 2.27, a maximum height (e.g., image height) of the imaging plane img of approximately 3.27 mm, and / or a field of view of approximately 99.5 degrees. In an embodiment, the effective radius "Y11" of the object-side surface S2 of the first lens L1 may be approximately 0.602 mm, and the effective radius "Y22" of the image sensor-side surface S5 of the second lens L2 may be approximately 0.98 mm. The lens assembly 400 may satisfy at least some of the above-described shapes and refractive powers of the (multiple) lenses (e.g., (multiple) lens surfaces) and / or the conditions given by the equations, and may be manufactured using the exemplary specifications described in Table 1 below.

[0140] Table 1

[0141] surface Surface type yradius thickness Refractive index(Nd) Abbe number (Vd) S0 Spherical infinity 400 Stop Spherical infinity -0.06 S2 Odd polynomial 2.168 0.588 1.54401 55.91 S3 Odd polynomial 15.155 0.263 S4 Odd polynomial -39.364 0.332 1.67074 19.23 S5 Odd polynomial 15.480 0.282 S6 Odd polynomial -7.865 0.614 1.54401 55.91 S7 Odd polynomial -2.040 0.02 S8 Odd polynomial 17.792 0.32 1.67074 19.23 S9 Odd polynomial 4.122 0.127 S10 Odd polynomial 0.732 0.517 1.54401 55.91 S11 Odd polynomial 0.655 0.408 S12 Spherical infinity 0.11 1.5168 64.2 S13 Spherical infinity 0.585 img Spherical infinity 0.03

[0142] The following Tables 2, 3, and 4 list the aspherical coefficients of lenses L1, L2, L3, L4, and L5, and the aspherical surfaces may be defined by the following Equation 8.

[0143] Equation 8:

[0144]

[0145] In Equation 8, "x" is the distance from the point on the lens surface through which the optical axis O passes in the direction of the optical axis O, "y" is the distance from the optical axis O in the direction perpendicular to the optical axis O, "R" is the radius of curvature at the point on the lens surface through which the optical axis O passes, "K" is the quadratic curve constant, and "Ai" is the aspheric coefficient.

[0146] Table 2

[0147] S2 S3 S4 K 8.101859E-02 9.874129E+01 9.821224E+01 A4 -2.418719E-01 -2.978171E-01 -5.276896E-01 A6 1.425027E+01 4.071002E+00 5.649981E+00 A8 -4.727510E+02 -7.472119E+01 -8.695146E+01 A10 9.118702E+03 8.737224E+02 8.600692E+02 A12 -1.128809E+05 -7.007610E+03 -5.869628E+03 A14 9.481317E+05 3.961610E+04 2.827116E+04 A16 -5.582765E+06 -1.607096E+05 -9.770638E+04 A18 2.343930E+07 4.716619E+05 2.442967E+05 A20 -7.047034E+07 -9.997136E+05 -4.414340E+05 A22 1.504170E+08 1.510575E+06 5.696420E+05 A24 -2.223050E+08 -1.581881E+06 -5.108510E+05 A26 2.160717E+08 1.088024E+06 3.018932E+05 A28 -1.241226E+08 -4.411123E+05 -1.055189E+05 A30 3.190311E+07 7.975172E+04 1.649848E+04

[0148] Table 3

[0149]

[0150]

[0151] Table 4

[0152] S8 S9 S10 S11 K 9.900000E+01 -5.727824E+01 -3.694576E+00 -2.706320E+00 A4 3.561564E-01 4.900055E-01 -3.042158E-01 -3.199156E-01 A6 -5.275694E-01 -1.074439E+00 2.688712E-01 4.029754E-01 A8 4.108198E-01 1.655024E+00 -2.622043E-01 -4.285724E-01 A10 -5.610561E-01 -2.076525E+00 2.104067E-01 3.449319E-01 A12 1.530490E+00 1.983853E+00 -1.232712E-01 -2.057338E-01 A14 -3.121703E+00 -1.404528E+00 5.431360E-02 9.133485E-02 A16 4.035334E+00 7.344241E-01 -1.848759E-02 -3.025043E-02 A18 -3.417629E+00 -2.833037E-01 4.851694E-03 7.443306E-03 A20 1.944943E+00 8.009603E-02 -9.607618E-04 -1.346373E-03 A22 -7.458256E-01 -1.633914E-02 1.392321E-04 1.757662E-04 A24 1.885820E-01 2.334368E-03 -1.419195E-05 -1.605200E-05 A26 -2.972846E-02 -2.211293E-04 9.584118E-07 9.704310E-07 A28 2.584615E-03 1.245338E-05 -3.837555E-08 -3.482628E-08 A30 -9.013028E-05 -3.151588E-07 6.884321E-10 5.609765E-10

[0153] Fig. 9 is a diagram illustrating a lens assembly 500 according to an embodiment of the present disclosure. Fig.10 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph of spherical aberration of lens assembly 500.

[0154] Fig.11 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph of astigmatism of lens assembly 500. Fig.12 The present invention is a diagram showing an embodiment of the present invention. Fig. 9 A graph showing the distortion rate of the lens assembly 500.

[0155] Fig. 9 The lens assembly 500 can have a focal length of approximately 2.733 mm, an F-number of approximately 2.27, a maximum height of the imaging plane img of approximately 3.27 mm, and / or a field of view of approximately 99.5 degrees. In an embodiment, the effective radius "Y11" of the object side surface S2 of the first lens L1 can be approximately 0.602 mm, and the effective radius "Y22" of the image sensor side surface S5 of the second lens L2 can be approximately 1.004 mm. The lens assembly 500 can satisfy at least some of the above-mentioned shapes and refractive powers of (multiple) lenses (e.g., (multiple) lens surfaces) and / or the conditions given by the equations, can be manufactured using the exemplary specifications described in Table 5 below, and have the aspheric coefficients listed in Tables 6, 7, and 8.

[0156] Table 5

[0157] surface Surface type yradius thickness Refractive index(Nd) Abbe number (Vd) S0 Spherical infinity 400 Stop Spherical infinity -0.06 S2 Odd polynomial 2.094 0.588 1.54401 55.91 S3 Odd polynomial 18.550 0.263 S4 Odd polynomial -43.716 0.332 1.67074 19.23 S5 Odd polynomial 7.550 0.282 S6 Odd polynomial -11.425 0.614 1.54401 55.91 S7 Odd polynomial -2.409 0.02 S8 Odd polynomial 17.502 0.32 1.67074 19.23 S9 Odd polynomial 3.799 0.127 S10 Odd polynomial 0.682 0.517 1.54401 55.91 S11 Odd polynomial 0.650 0.408 S12 Spherical infinity 0.11 1.5168 64.2 S13 Spherical infinity 0.585 img Spherical infinity 0.03

[0158] Table 6

[0159]

[0160]

[0161] Table 7

[0162] S5 S6 S7 K 2.756975E+01 -9.900000E+01 -1.058324E+00 A4 -3.823414E-01 -4.582648E-01 -9.085289E-01 A6 2.014741E+00 3.282690E+00 4.087333E+00 A8 -1.299543E+01 -1.506226E+01 -1.351795E+01 A10 6.141150E+01 5.331297E+01 3.315567E+01 A12 -2.144522E+02 -1.436884E+02 -5.954631E+01 A14 5.447135E+02 2.884691E+02 7.835354E+01 A16 -9.904207E+02 -4.277586E+02 -7.576992E+01 A18 1.263590E+03 4.668680E+02 5.388648E+01 A20 -1.087618E+03 -3.726095E+02 -2.800589E+01 A22 5.751849E+02 2.142638E+02 1.044772E+01 A24 -1.316564E+02 -8.624128E+01 -2.699824E+00 A26 -3.164328E+01 2.301592E+01 4.525592E-01 A28 2.702329E+01 -3.653023E+00 -4.326541E-02 A30 -4.903765E+00 2.606582E-01 1.714288E-03

[0163] Table 8

[0164]

[0165]

[0166] Fig.13 is a diagram illustrating a lens assembly 600 according to an embodiment of the present disclosure. Fig.14 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph of spherical aberration of lens assembly 600 is shown. Fig.15 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph of astigmatism of lens assembly 600. Fig.16 The present invention is a diagram showing an embodiment of the present invention. Fig.13 A graph showing the distortion rate of the lens assembly 600.

[0167] Fig.13 The lens assembly 600 can have a focal length of approximately 2.733 mm, an F-number of approximately 2.27, a maximum height of the imaging plane img of approximately 3.27 mm, and / or a field of view of approximately 99.5 degrees. In an embodiment, the effective radius "Y11" of the object-side surface S2 of the first lens L1 can be approximately 0.602 mm, and the effective radius "Y22" of the image sensor-side surface S5 of the second lens L2 can be approximately 0.992 mm. The lens assembly 600 can satisfy at least some of the above-mentioned shapes and refractive powers of (multiple) lenses (e.g., (multiple) lens surfaces) and / or the conditions given by the equations, can be manufactured using the exemplary specifications described in Table 9 below, and have the aspheric coefficients listed in Tables 10, 11, and 12.

[0168] Table 9

[0169]

[0170]

[0171] Table 10

[0172] S2 S3 S4 K 1.807000E-01 8.890209E+01 -8.419465E+01 A4 -2.476886E-01 -2.182511E-01 -3.983246E-01 A6 1.442366E+01 1.681465E+00 1.874938E+00 A8 -4.684587E+02 -3.037755E+01 -2.038721E+01 A10 8.890185E+03 3.543730E+02 1.425907E+02 A12 -1.088605E+05 -2.946907E+03 -7.416133E+02 A14 9.086523E+05 1.764852E+04 2.895411E+03 A16 -5.336795E+06 -7.660812E+04 -8.499819E+03 A18 2.241676E+07 2.411893E+05 1.870584E+04 A20 -6.758842E+07 -5.473413E+05 -3.061709E+04 A22 1.449606E+08 8.818188E+05 3.677328E+04 A24 -2.156225E+08 -9.797487E+05 -3.152084E+04 A26 2.112155E+08 7.114294E+05 1.822446E+04 A28 -1.224221E+08 -3.031230E+05 -6.340553E+03 A30 3.177914E+07 5.736614E+04 9.970717E+02

[0173] Table 11

[0174]

[0175]

[0176] Table 12

[0177] S8 S9 S10 S11 K 8.984051E+01 -5.122264E+00 -3.675093E+00 -2.713206E+00 A4 6.130551E-01 6.588498E-01 -3.008971E-01 -3.218747E-01 A6 -1.428977E+00 -1.668821E+00 2.640165E-01 4.061902E-01 A8 2.300634E+00 2.773013E+00 -2.550812E-01 -4.254894E-01 A10 -2.777155E+00 -3.431108E+00 2.035339E-01 3.331880E-01 A12 2.354028E+00 3.088318E+00 -1.189940E-01 -1.923642E-01 A14 -1.392800E+00 -2.020929E+00 5.243825E-02 8.269734E-02 A16 5.816998E-01 9.691583E-01 -1.786634E-02 -2.662041E-02 A18 -1.731690E-01 -3.420765E-01 4.690642E-03 6.395943E-03 A20 3.683058E-02 8.854114E-02 -9.281790E-04 -1.134356E-03 A22 -5.549203E-03 -1.656876E-02 1.342525E-04 1.456182E-04 A24 5.781628E-04 2.177095E-03 -1.364580E-05 -1.309693E-05 A26 -3.960596E-05 -1.901754E-04 9.183736E-07 7.800290E-07 A28 1.604714E-06 9.899918E-06 -3.663312E-08 -2.756057E-08 A30 -2.913668E-08 -2.320150E-07 6.545589E-10 4.364824E-10

[0178] Fig.17 is a diagram illustrating a lens assembly 700 according to an embodiment of the present disclosure. Fig.18 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph of spherical aberration of lens assembly 700 is shown. Fig.19 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph of astigmatism of lens assembly 700. Fig. 20 The present invention is a diagram showing an embodiment of the present invention. Fig.17 A graph showing the distortion rate of the lens assembly 700.

[0179] Fig.17 The lens assembly 700 can have a focal length of approximately 2.733 mm, an F-number of approximately 2.27, a maximum height of the imaging plane img of approximately 3.27 mm, and / or a field of view of approximately 99.5 degrees. In an embodiment, the effective radius "Y11" of the object side surface S2 of the first lens L1 can be approximately 0.602 mm, and the effective radius "Y22" of the image sensor side surface S5 of the second lens L2 can be approximately 1.004 mm. The lens assembly 700 can satisfy at least some of the above-mentioned shapes and refractive powers of (multiple) lenses (e.g., (multiple) lens surfaces) and / or the conditions given by the equations, can be manufactured using the exemplary specifications described in Table 13 below, and have the aspheric coefficients listed in Tables 14, 15, and 16.

[0180] Table 13

[0181] surface Surface type yradius thickness Refractive index(Nd) Abbe number (Vd) S0 Spherical infinity 400 Stop Spherical infinity -0.06 S2 Odd polynomial 2.094 0.503 1.54401 55.91 S3 Odd polynomial 18.550 0.334 S4 Odd polynomial -43.716 0.333 1.67074 19.23 S5 Odd polynomial 7.550 0.204 S6 Odd polynomial -11.425 0.752 1.54401 55.91 S7 Odd polynomial -2.409 0.044 S8 Odd polynomial 17.502 0.25 1.67074 19.23 S9 Odd polynomial 3.799 0.085 S10 Odd polynomial 0.682 0.549 1.54401 55.91 S11 Odd polynomial 0.650 0.4241 S12 Spherical infinity 0.11 1.5168 64.2 S13 Spherical infinity 0.585 img Spherical infinity 0.03

[0182] Table 14

[0183]

[0184]

[0185] Table 15

[0186] S5 S6 S7 K 2.756975E+01 -9.900000E+01 -1.058324E+00 A4 -3.823414E-01 -4.582648E-01 -9.085289E-01 A6 2.014741E+00 3.282690E+00 4.087333E+00 A8 -1.299543E+01 -1.506226E+01 -1.351795E+01 A10 6.141150E+01 5.331297E+01 3.315567E+01 A12 -2.144522E+02 -1.436884E+02 -5.954631E+01 A14 5.447135E+02 2.884691E+02 7.835354E+01 A16 -9.904207E+02 -4.277586E+02 -7.576992E+01 A18 1.263590E+03 4.668680E+02 5.388647E+01 A20 -1.087618E+03 -3.726095E+02 -2.800589E+01 A22 5.751849E+02 2.142638E+02 1.044772E+01 A24 -1.316564E+02 -8.624128E+01 -2.699823E+00 A26 -3.164328E+01 2.301592E+01 4.525590E-01 A28 2.702329E+01 -3.653023E+00 -4.326537E-02 A30 -4.903765E+00 2.606582E-01 1.714286E-03

[0187] Table 16

[0188]

[0189]

[0190] According to an embodiment, regarding the conditions of equations 1 to 7, based on Figure 5 , Fig. 9 , Fig.13 and Fig.17 Exemplary values ​​calculated for lens data of lens assemblies 400, 500, 600 and 700 are listed in Table 17 below.

[0191] Table 17

[0192] Figure 5 Example Fig. 9 Example Fig.13 Example Fig.17 Example Equation 1 0.642 0.643 0.642 0.643 Equation 2 0.0067 -0.047 0.005 -0.047 Equation 3 99.5 99.5 99.5 99.5 Equation 4 0.138 0.147 0.142 0.147 Equation 5 36.68 36.68 36.68 36.68 Equation 6 1.014 1.014 1.014 1.014 Equation 7 0.346 0.351 0.347 0.351

[0193] According to an embodiment, when combined with a high-pixel image sensor having a maximum height of an imaging plane img of about 3.27 mm, by satisfying the above conditions, the lens assemblies 400, 500, 600, and 700 can provide good wide-angle performance with a field of view of about 100 degrees. In an embodiment, the aperture Stop is arranged closer to the object S than the lenses L1, L2, L3, L4, and L5, thereby helping to reduce the effective diameter of the first lens L1 or the second lens L2. For example, when the aperture Stop is arranged closer to the object S than the lenses L1, L2, L3, L4, and L5, the lens assemblies 400, 500, 600, and 700 can have a small diameter and thus provide good wide-angle performance. In an embodiment, the gaps between the first lens L1, the second lens L2, and the third lens L3 sequentially arranged along the direction of the optical axis O are designed to be within a specified range, so that the lenses L1, L2, and L3 can be easily fixed or assembled without using spacers between them. For example, the flare phenomenon caused by the spacer can be suppressed, and the manufacturing cost can be reduced.

[0194] Effects that can be achieved by the present disclosure are not limited to those that have been described above, and other unmentioned effects can be clearly understood by those skilled in the art from the following description.

[0195] As described above, the lens assembly (e.g., Figures 1 to 4 , Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 The camera module 180, 280, 305, 312 or 313 or the lens assembly 210, 400, 500, 600 or 700 in the embodiment may include: an aperture (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 Stop in); Image sensor (for example, Figure 2 , Figure 5 , Fig. 9 , Fig.13 and / or Fig.17230 or I), including an imaging plane (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 img), and on the optical axis (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 O in the figure) aligned with the aperture; and five lenses (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L1, L2, L3, L4, L5), which are sequentially arranged between the aperture and the image sensor along the direction of the optical axis, and include: a first lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L1 in the figure is arranged closest to the aperture and has positive refractive power; the second lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L2 in the figure is arranged to be the second farthest from the aperture and has negative refractive power; a third lens (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L3 in the figure is set to be the third farthest from the aperture; the fourth lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 , L4 in the figure, arranged to be fourth away from the aperture; and a fifth lens (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 In the embodiment, the lens assembly may satisfy the following Conditional Expression 1, Conditional Expression 2, and Conditional Expression 3.

[0196] Conditional expression 1:

[0197]

[0198] Conditional expression 2:

[0199]

[0200] Conditional expression 3:

[0201] 90≤FOV≤110

[0202] Here, “OAL” may be the object-side surface of first lens L1 measured on the optical axis (eg, Figure 5 "IH" may be the maximum height of the imaging plane, "T12" may be the gap between the first lens and the second lens measured on the optical axis, "T23" may be the gap between the second lens and the third lens measured on the optical axis, "EFL" may be the total focal length of the lens assembly, and "FOV" may be the field of view of the lens assembly.

[0203] According to an embodiment, the lens assembly may satisfy the following about the effective radius “Y11” of the object-side surface of the first lens and the image sensor-side surface of the second lens (eg, Figure 5 Conditional Expression 4 of the effective radius “Y22” of the surface represented by “S5” in the figure.

[0204] Conditional expression 4:

[0205]

[0206] According to the embodiment, the lens assembly may satisfy the following Conditional Expression 5 regarding the Abbe number “ Vd1 ” of the first lens and the Abbe number “ Vd2 ” of the second lens.

[0207] Conditional expression 5:

[0208] 20≤Vd1-Vd2≤45

[0209] According to an embodiment, each of the five lenses may include an inflection point on at least one of the object-side surface or the image sensor-side surface (e.g., Figure 5 In the symbol " ◆ ” indicates the point).

[0210] According to an embodiment, each of the third lens, the fourth lens, and the fifth lens may include an inflection point on an object-side surface and an image sensor-side surface.

[0211] According to the embodiment, the lens assembly can satisfy the following Conditional Expression 6 regarding the distance “OAL” on the optical axis between the object side surface or the aperture side surface of the first lens and the imaging plane and the distance “Tsi” on the optical axis from the aperture to the imaging plane.

[0212] Conditional Expression 6:

[0213]

[0214] According to an embodiment, the first lens may have a convex object-side surface and a concave image sensor-side surface in a paraxial region (e.g., Figure 5The image sensor has a meniscus shape (surface indicated by “S3” in the figure), and includes an inflection point on the image sensor side surface.

[0215] According to an embodiment, the second lens may have a concave object-side surface in the paraxial region (e.g., Figure 5 ) and a concave image sensor side surface, and includes an inflection point on the image sensor side surface.

[0216] According to an embodiment, the third lens may have a concave object-side surface in the paraxial region (e.g., Figure 5 ) and the protruding image sensor side surface (e.g., Figure 5 The surface indicated by “S7” in FIG.

[0217] According to an embodiment, each of the fourth lens and the fifth lens may have a convex object-side surface in the paraxial region (for example, Figure 5 ) and the concave image sensor side surface (e.g., in Figure 5 ) the surfaces indicated by “S9” and “S11” in FIG.

[0218] According to the embodiment, the lens assembly may satisfy the following Conditional Expression 7 regarding the distance “BFL” from the image sensor side surface of the fifth lens to the imaging plane on the optical axis and the maximum height “IH” of the imaging plane.

[0219] Conditional expression 7:

[0220]

[0221] According to an embodiment of the present disclosure, an electronic device (eg, Figures 1 to 4 The electronic devices 101, 102, 104, and 300 in the embodiment may include a lens assembly (eg, Figures 1 to 4 , Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 , camera module 180, 280, 305, 312 or 313 or lens assembly 210, 400, 500, 600 or 700) and a processor configured to acquire an object using the lens assembly (e.g., Figure 1 The processor 120 or Figure 2 In an embodiment, the lens assembly may include: an aperture (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 Stop in); Image sensor (for example, Figure 2 , Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 230 or I), including an imaging plane (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 img), and on the optical axis (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 O in the figure) aligned with the aperture; and five lenses (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L1, L2, L3, L4, L5), which are sequentially arranged between the aperture and the image sensor along the direction of the optical axis, and include: a first lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L1 in the figure is arranged closest to the aperture and has positive refractive power; the second lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L2 in the figure is arranged to be the second farthest from the aperture and has negative refractive power; a third lens (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 L3 in the figure is set to be the third farthest from the aperture; the fourth lens (for example, Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 , L4 in the figure, arranged to be fourth away from the aperture; and a fifth lens (e.g., Figure 5 , Fig. 9 , Fig.13 and / or Fig.17 In the embodiment, the lens assembly may satisfy the following Conditional Expression 8, Conditional Expression 9, and Conditional Expression 10.

[0222] Conditional expression 8:

[0223]

[0224] Conditional expression 9:

[0225]

[0226] Conditional expression 10:

[0227] 90≤FOV≤110

[0228] Here, “OAL” may be the object-side surface of first lens L1 measured on the optical axis (eg, Figure 5 "IH" may be the maximum height of the imaging plane, "T12" may be the gap between the first lens and the second lens measured on the optical axis, "T23" may be the gap between the second lens and the third lens measured on the optical axis, "EFL" may be the total focal length of the lens assembly, and "FOV" may be the field of view of the lens assembly.

[0229] According to an embodiment, the lens assembly may satisfy the following about the effective radius “Y11” of the object-side surface of the first lens and the image sensor-side surface of the second lens (eg, Figure 5 Conditional expression 11 of the effective radius “Y22” of the surface represented by “S5” in the figure.

[0230] Conditional expression 11:

[0231]

[0232] According to the embodiment, the lens assembly may satisfy the following Conditional Expression 12 regarding the Abbe number “ Vd1 ” of the first lens and the Abbe number “ Vd2 ” of the second lens.

[0233] Conditional expression 12:

[0234] 20≤Vd1-Vd2≤45

[0235] According to the embodiment, the lens assembly can satisfy the following conditional expression 13 regarding the distance "OAL" on the optical axis between the object side surface or the aperture side surface of the first lens and the imaging plane and the distance "Tsi" on the optical axis from the aperture to the imaging plane.

[0236] Conditional expression 13:

[0237]

[0238] According to the embodiment, the lens assembly may satisfy the following Conditional Expression 14 regarding the distance “BFL” from the image sensor side surface of the fifth lens to the imaging plane on the optical axis and the maximum height “IH” of the imaging plane.

[0239] Conditional expression 14:

[0240]

[0241] According to an embodiment, each of the five lenses may include an inflection point on at least one of the object-side surface or the image sensor-side surface (e.g., Figure 5 In the symbol " ◆ ” indicates the point).

[0242] According to an embodiment, each of the third lens, the fourth lens, and the fifth lens may include an inflection point on an object-side surface and an image sensor-side surface.

[0243] According to an embodiment, the first lens may have a convex object-side surface and a concave image sensor-side surface in a paraxial region (e.g., Figure 5 The image sensor has a meniscus shape (surface indicated by “S3” in the figure), and includes an inflection point on the image sensor side surface.

[0244] According to an embodiment, the second lens may have a concave object-side surface in the paraxial region (e.g., Figure 5 ) and a concave image sensor side surface, and includes an inflection point on the image sensor side surface.

[0245] Although the present disclosure has been described about the embodiments by way of example, it should be understood that the embodiments are used to illustrate rather than to limit the present disclosure. It will be apparent to those skilled in the art that various changes may be made in form and detailed configuration without departing from the overall scope of the present disclosure (including the appended claims and their equivalents).

Claims

1. Lens assembly (210; 400; 500; 600; 700), including: Aperture (Stop); an image sensor (I) comprising an imaging plane (img) receiving at least a portion of the light incident through the aperture and aligned with the aperture on an optical axis (O); as well as Five lenses (L1, L2, L3, L4, L5) are sequentially arranged between the aperture and the image sensor along the direction of the optical axis, and include: a first lens (L1) arranged closest to the aperture and having positive refractive power; a second lens (L2) arranged second farthest from the aperture and having negative refractive power; a third lens (L3) arranged third farthest from the aperture; a fourth lens (L4) arranged fourth farthest from the aperture; and a fifth lens (L5) arranged closest to the image sensor and having positive refractive power, and Wherein, the lens assembly satisfies the following Conditional Expression 1, Conditional Expression 2 and Conditional Expression 3, Conditional expression 1: Conditional expression 2: Conditional expression 3: 90≤FOV≤110 wherein "OAL" is the distance between the object-side surface (S2) or the aperture-side surface of the first lens (L1) and the imaging plane (img) measured on the optical axis, "IH" is the maximum height of the imaging plane, "T12" is the gap between the first lens and the second lens measured on the optical axis, "T23" is the gap between the second lens and the third lens measured on the optical axis, "EFL" is the total focal length of the lens assembly, and "FOV" is the field of view of the lens assembly.

2. The lens assembly according to claim 1, wherein: The lens assembly satisfies the following Conditional Expression 4 regarding an effective radius “Y11” of the object-side surface of the first lens and an effective radius “Y22” of the image sensor-side surface (S5) of the second lens: Conditional expression 4:

3. The lens assembly according to claim 1 or 2, wherein: The lens assembly satisfies the following Conditional Expression 5 regarding the Abbe number “Vd1” of the first lens and the Abbe number “Vd2” of the second lens: Conditional expression 5: 20≤Vd1-Vd2≤45.

4. The lens assembly according to any one of claims 1 to 3, wherein: Each of the five lenses includes an inflection point on at least one of the object side surface (S2, S4, S6, S8, S10) or the image sensor side surface (S3, S5, S7, S9, S11).

5. The lens assembly according to any one of claims 1 to 4, wherein: Each of the third lens, the fourth lens, and the fifth lens includes an inflection point on an object-side surface ( S6 , S8 , S10 ) and an image sensor-side surface ( S7 , S9 , S11 ).

6. The lens assembly according to any one of claims 1 to 5, wherein: The lens assembly satisfies the following Conditional Expression 6 regarding a distance “OAL” on the optical axis between the object-side surface or the aperture-side surface of the first lens and the imaging plane and a distance “Tsi” on the optical axis from the aperture to the imaging plane: Conditional Expression 6:

7. The lens assembly according to any one of claims 1 to 6, wherein: The first lens has a meniscus shape having a convex object-side surface and a concave image sensor-side surface (S3) in a paraxial region, and includes an inflection point on the image sensor-side surface of the first lens.

8. The lens assembly according to any one of claims 1 to 7, wherein: The second lens has a concave object-side surface (S4) and a concave image sensor-side surface in a paraxial region, and includes an inflection point on the image sensor-side surface of the second lens.

9. The lens assembly according to any one of claims 1 to 8, wherein: The third lens has a concave object-side surface and a convex image sensor-side surface in a paraxial region.

10. The lens assembly according to any one of claims 1 to 9, wherein: Each of the fourth lens and the fifth lens has a convex object-side surface and a concave image sensor-side surface in a paraxial region.

11. The lens assembly according to any one of claims 1 to 10, wherein: The lens assembly satisfies the following Conditional Expression 7 regarding the distance “BFL” from the image sensor side surface (S11) of the fifth lens to the imaging plane on the optical axis and the maximum height “IH” of the imaging plane, Conditional expression 7:

12. The lens assembly according to claim 1, wherein: Each of the five lenses includes an inflection point on at least one of the object side surface (S2, S4, S6, S8, S10) and the image sensor side surface (S3, S5, S7, S9, S11), and Wherein, each of the third lens, the fourth lens and the fifth lens includes an inflection point on the object side surface (S6, S8, S10) and the image sensor side surface (S7, S9, S11).

13. The lens assembly according to claim 1, wherein: The first lens has a meniscus shape having a convex object-side surface and a concave image sensor-side surface (S3) in a paraxial region, and includes an inflection point on the image sensor-side surface of the first lens, and The second lens has a concave object-side surface (S4) and a concave image sensor-side surface in a paraxial region, and includes an inflection point on the image sensor-side surface of the second lens.

14. The lens assembly according to claim 1, wherein: the third lens has a concave object-side surface and a convex image sensor-side surface in a paraxial region, and Wherein, each of the fourth lens and the fifth lens has a convex object-side surface and a concave image sensor-side surface in a paraxial region.

15. Electronic device (101; 102; 104; 300), including: The lens assembly (210; 400; 500; 600; 700) according to any one of claims 1 to 14; as well as A processor (120; 260) is configured to acquire an image of a subject using the lens assembly.

Images