Camera including meta lens, and wearable electronic device including same

Abstract

A camera assembly according to an embodiment of the present disclosure comprises: an image sensor including an imaging plane on which an image is formed; and a meta lens including a first surface facing a first direction and a second surface opposite to the first surface, the meta lens including a plurality of supercells on the first surface, wherein each of the plurality of supercells includes a plurality of meta particles spaced apart from each other by a first separation distance along the first surface so as to diffract, in a certain direction, light incident on the meta lens, wherein each of the plurality of meta particles is formed to have a first height defined from the first surface, wherein some of the plurality of meta particles are arranged to have different widths along the first surface such that a phase difference, which is defined as a difference between a maximum phase delay value of light incident on the meta lens delayed by one of the plurality of meta particles and a minimum phase delay value of light incident on the meta lens delayed by another of the plurality of meta particles, is greater than or equal to (I) and less than (II), and wherein, if the maximum phase difference is greater than or equal to (I) and less than (II), light passing through each supercell forms a wavefront on the imaging plane of the image sensor.

Description

Camera including a meta-lens and wearable electronic device including the same

[0001] The various embodiments disclosed in this document relate to cameras including a meta-lens, for example, cameras including a meta-lens and wearable electronic devices including the same.

[0002] Driven by remarkable advancements in information and communication technology and semiconductor technology, the distribution and use of various electronic devices are increasing rapidly. In particular, recent electronic devices are being developed to enable portable communication.

[0003] The term "electronic device" refers to a device that performs specific functions according to an installed program, ranging from home appliances to electronic notebooks, portable multimedia players, mobile communication terminals, tablet PCs, video / audio devices, desktop / laptop computers, and in-car navigation systems. For example, these electronic devices can output stored information as sound or video. As the integration density of electronic devices increases and ultra-high-speed, high-capacity wireless communication becomes commonplace, various functions can now be integrated into a single electronic device, such as a mobile communication terminal. For instance, not only communication functions but also entertainment functions like games, multimedia functions like music / video playback, communication and security functions like mobile banking, and functions such as schedule management or electronic wallets are being integrated into a single electronic device. These electronic devices are being miniaturized to allow users to carry them conveniently.

[0004] Recently, wearable electronic devices are being developed in various forms. Wearable electronic devices are worn at a position corresponding to the user's eyes and can provide various information that is immediately perceived by the user's eyes. At this time, various cameras are provided to display information in response to the user's eye movements, and cameras are also being miniaturized to achieve the miniaturization of wearable electronic devices.

[0005] The information described above may be provided as background art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure.

[0006] In wearable electronic devices, there are difficulties in miniaturizing the camera that recognizes the user's iris response. The camera lens utilizes refraction, and there was a difficulty in increasing the size of the camera due to the thickness of the lens.

[0007] Meta lenses designed to miniaturize cameras have large aspect ratios of individual particles due to the maximum phase difference of the meta particles, and there were difficulties in manufacturing them.

[0008] A camera assembly according to one embodiment of the present disclosure can reduce the size of the camera assembly by reducing the thickness of the lens. A camera assembly according to one embodiment of the present disclosure can reduce the height of the meta-particles constituting the lens. A camera assembly according to one embodiment of the present disclosure can reduce the aspect ratio of the meta-particles and increase production efficiency.

[0009] A camera assembly according to one embodiment of the present disclosure comprises: an image sensor including an imaging plane on which an image is formed; and a meta lens including a first surface facing a first direction and a second surface opposite to the first surface, and including a plurality of supercells on the first surface, wherein each supercell included in the plurality of supercells includes a plurality of meta particles spaced apart from each other by a first spacing distance along the first surface to diffract light incident on the meta lens in a certain direction, wherein each of the plurality of meta particles is formed at a first height defined from the first surface, and a phase difference defined as the difference between a maximum phase delay value of light incident on the meta lens delayed by one of the plurality of meta particles and a minimum phase delay value of light incident on the meta lens delayed by another of the plurality of meta particles more Some of the plurality of meta-particles are arranged to have different widths along the first plane so as to be less than, and the maximum phase difference more When less than, light passing through each supercell can form a wavefront on the imaging plane of the image sensor.

[0010] A wearable electronic device according to one embodiment of the present disclosure comprises: a frame having at least one aperture formed therein; and at least one camera assembly disposed in the aperture, wherein the camera assembly comprises: a meta-lens including a substrate having a first surface facing a first direction; a case having the meta-lens disposed on one side thereof; an image sensor recognizing light transmitted through the lens on the other side thereof thereof; and a plurality of supercells disposed in the lens, wherein each of the supercells comprises a plurality of meta-particles spaced apart from each other along a second direction perpendicular to the first direction at a constant interval to delay the phase of the light and diffract the light incident through the lens in a constant direction, and the phase difference defined as the difference between a minimum phase delay value of the light delayed by one of the plurality of meta-particles and a maximum phase delay value of the light delayed by another of the plurality of meta-particles It may be less than

[0011] A camera assembly according to one embodiment of the present disclosure may include a flat lens.

[0012] A camera assembly according to one embodiment of the present disclosure has a phase difference A wavefront similar to that of the image sensor can be formed.

[0013] A meta lens of a camera assembly according to one embodiment of the present disclosure supercells with a maximum phase difference of less than A wavefront similar to that of the image sensor can be formed.

[0014] A meta lens of a camera assembly according to one embodiment of the present disclosure may be configured to have a maximum aspect ratio of 5 or less.

[0015] A meta lens of a camera assembly according to one embodiment of the present disclosure is configured with a maximum aspect ratio of 5 or less, so that the physical stability of the meta particles can be increased.

[0016] A meta lens of a camera assembly according to one embodiment of the present disclosure can have a thin thickness.

[0017] A meta lens of a camera assembly according to one embodiment of the present disclosure may not include a material with a high refractive index and may have an aspect ratio of 5 or less.

[0018] A meta lens of a camera assembly according to one embodiment of the present disclosure is configured with a maximum aspect ratio of 5 or less, which can increase the production efficiency of the meta lens.

[0019] The effects obtainable from the present disclosure are not limited to those mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art to which the present disclosure belongs from the description below.

[0020] The aspects, configurations, and / or advantages described above regarding various embodiments of the present disclosure may become more apparent from the following detailed description with reference to the accompanying drawings.

[0021] FIG. 1 is a block diagram of a wearable electronic device (101) in a network environment (100) according to various embodiments.

[0022] FIG. 2 is a perspective view showing a wearable electronic device according to one embodiment of the present disclosure.

[0023] FIG. 3 is a perspective view showing the front of a wearable electronic device according to one embodiment of the present disclosure.

[0024] FIG. 4 is a perspective view showing the main body portion of a wearable electronic device according to one embodiment of the present disclosure.

[0025] FIG. 5 is an exploded view showing the front view with the housing and cover of the main body of a wearable electronic device separated, according to one embodiment of the present disclosure.

[0026] FIG. 6 is a conceptual diagram of a camera's meta lens viewed from the -Z direction according to one embodiment of the present disclosure.

[0027] FIG. 7a is a conceptual diagram showing a part of cross-section A-A' of FIG. 6 according to one embodiment of the present disclosure.

[0028] FIG. 7b is a conceptual diagram of a supercell of a meta-lens according to one embodiment of the present disclosure.

[0029] FIG. 8a is a conceptual diagram showing the state in which light passing through a meta lens of a camera according to one embodiment of the present disclosure reaches an image sensor.

[0030] FIG. 8b is a conceptual diagram showing an enlarged view of region S1 of FIG. 8a according to one embodiment of the present disclosure.

[0031] FIG. 9a is a diagram showing the phase delay value of each meta-particle according to a comparative example and the wavefront formed due to the phase delay.

[0032] FIG. 9b is a diagram illustrating the phase delay value of each of the meta-particles and the wavefront formed due to the phase delay according to one embodiment of the present disclosure.

[0033] FIG. 10a is a diagram illustrating the phase delay value of each meta-particle and the wavefront formed due to the phase delay, according to one embodiment of the present disclosure.

[0034] FIG. 10b is a diagram illustrating the phase delay value of each meta-particle and the wavefront formed due to the phase delay, according to one embodiment of the present disclosure.

[0035] FIG. 10c is a diagram showing the phase delay value of each meta-particle and the wavefront formed due to the phase delay according to a comparative example.

[0036] Figure 11 is a graph showing the phase difference and diffraction efficiency of a meta-lens according to meta-particles.

[0037] FIG. 12a is a graph showing the width and phase delay and the width and transmittance of a meta-particle, respectively, according to a comparative example.

[0038] FIG. 12b is a graph showing the width and phase delay and the width and transmittance of a meta-particle, respectively, according to one embodiment of the present disclosure.

[0039] FIG. 13 is a graph showing the resolution according to the frequency of the meta-particles, comparing the metalens according to one embodiment of the present disclosure and the metalens according to a comparative embodiment.

[0040] FIG. 14 is a graph showing the phase delay values ​​of each meta particle according to the position of the metalens, comparing the metalens according to one embodiment of the present disclosure and the metalens according to a comparative embodiment.

[0041] Throughout the attached drawings, similar parts, configurations, and / or structures may be assigned similar reference numbers.

[0042] FIG. 1 is a block diagram of an electronic device (101) in a network environment (100) according to various embodiments.

[0043] Referring to FIG. 1, in a network environment (100), an electronic device (101) may communicate with an electronic device (102) through a first network (198) (e.g., a short-range wireless communication network) or with at least one of an electronic device (104) or a server (108) through a second network (199) (e.g., a long-range wireless communication network). According to one embodiment, the electronic device (101) may communicate with the electronic device (101) (104) through a server (108). According to one embodiment, the electronic device (101) may include a processor (120), memory (130), input module (150), sound output module (155), display module (160), audio module (170), sensor module (176), interface (177), connection terminal (178), haptic module (179), camera module (180), power management module (188), battery (189), communication module (190), subscriber identification module (196), or antenna module (197). In some embodiments, at least one of these components (e.g., connection terminal (178)) may be omitted from the electronic device (101), or one or more other components may be added. In some embodiments, some of these components (e.g., sensor module (176), camera module (180), or antenna module (197)) may be integrated into a single component (e.g., display module (160)).

[0044] The processor (120) can control at least one other component (e.g., hardware or software component) of the electronic device (101) connected to the processor (120) by executing software (e.g., program (140)), for example, and can perform various data processing or operations. According to one embodiment, as at least part of the data processing or operations, the processor (120) can store commands or data received from other components (e.g., sensor module (176) or communication module (190)) in volatile memory (132), process the commands or data stored in volatile memory (132), and store the resulting data in non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., central processing unit or application processor) or an auxiliary processor (123) that can operate independently or together with it (e.g., graphics processing unit, neural processing unit (NPU), image signal processor, sensor hub processor, or communication processor). For example, if the electronic device (101) includes a main processor (121) and an auxiliary processor (123), the auxiliary processor (123) may be configured to use lower power than the main processor (121) or to be specialized for a designated function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as part thereof.

[0045] The auxiliary processor (123) may control at least some of the functions or states associated with at least one component of the electronic device (101) (e.g., display module (160), sensor module (176), or communication module (190)) on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. According to one embodiment, the auxiliary processor (123) (e.g., image signal processor or communication processor) may be implemented as part of another functionally related component (e.g., camera module (180) or communication module (190)). According to one embodiment, the auxiliary processor (123) (e.g., neural network processing unit) may include a hardware structure specialized for processing an artificial intelligence model. The artificial intelligence model may be generated through machine learning. Such learning may be performed, for example, on the electronic device (101) itself where the artificial intelligence model is executed, or through a separate server (e.g., server (108)). The learning algorithm may include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model may include a plurality of artificial neural network layers.An artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to the hardware structure, the artificial intelligence model may include a software structure, either additionally or substantially.

[0046] The memory (130) can store various data used by at least one component of the electronic device (101) (e.g., processor (120) or sensor module (176)). The data may include, for example, input data or output data for software (e.g., program (140)) and related commands. The memory (130) may include volatile memory (132) or non-volatile memory (134).

[0047] The program (140) may be stored as software in memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).

[0048] The input module (150) can receive commands or data to be used for a component of the electronic device (101) (e.g., processor (120)) from outside the electronic device (101) (e.g., user). The input module (150) may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).

[0049] The sound output module (155) can output a sound signal to the outside of the electronic device (101). The sound output module (155) may include, for example, a speaker or a receiver. The speaker may be used for general purposes, such as multimedia playback or recording playback. The receiver may be used to receive incoming calls. According to one embodiment, the receiver may be implemented separately from the speaker or as part thereof.

[0050] The display module (160) can visually provide information to an external (e.g., user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling said device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of the force generated by said touch.

[0051] The audio module (170) can convert sound into an electrical signal or, conversely, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150) or output sound through the sound output module (155) or an external electronic device (101) (e.g., electronic device (102)) (e.g., speaker or headphones)) connected directly or wirelessly to the electronic device (101).

[0052] The sensor module (176) can detect the operating state of the electronic device (101) (e.g., power or temperature) or the external environmental state (e.g., user state) and generate an electrical signal or data value corresponding to the detected state. According to one embodiment, the sensor module (176) may include, for example, a gesture sensor, a gyroscope sensor, a barometric pressure sensor, a magnetic sensor, an accelerometer sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biosensor, a temperature sensor, a humidity sensor, or an illuminance sensor.

[0053] The interface (177) may support one or more specified protocols that can be used for the electronic device (101) to be connected directly or wirelessly to an external electronic device (101) (e.g., electronic device (102)). According to one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.

[0054] The connection terminal (178) may include a connector through which the electronic device (101) can be physically connected to an external electronic device (101) (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0055] The haptic module (179) can convert an electrical signal into a mechanical stimulus (e.g., vibration or movement) or an electrical stimulus that the user can perceive through tactile or kinesthetic senses. According to one embodiment, the haptic module (179) may include, for example, a motor, a piezoelectric element, or an electric stimulation device.

[0056] The camera module (180) can capture still images and video. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.

[0057] The power management module (188) can manage the power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented, for example, as at least part of a power management integrated circuit (PMIC).

[0058] The battery (189) can supply power to at least one component of the electronic device (101). According to one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0059] The communication module (190) can support the establishment of a direct (e.g., wired) communication channel or a wireless communication channel between an electronic device (101) and an external electronic device (101) (e.g., electronic device (102), electronic device (104), or server (108)), and the performance of communication through the established communication channel. The communication module (190) may include one or more communication processors that operate independently of the processor (120) (e.g., application processor) and support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., cellular communication module, short-range wireless communication module, or GNSS (global navigation satellite system) communication module) or a wired communication module (194) (e.g., LAN (local area network) communication module, or power line communication module). The corresponding communication module among these communication modules can communicate with an external electronic device (101) through a first network (198) (e.g., a short-range communication network such as Bluetooth, WiFi (wireless fidelity) direct, or IrDA (infrared data association)) or a second network (199) (e.g., a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules may be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can identify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) using subscriber information (e.g., International Mobile Subscriber Identifier (IMSI)) stored in the subscriber identification module (196).

[0060] The wireless communication module (192) can support 5G networks and next-generation communication technologies following 4G networks, for example, new radio access technology. NR access technology can support high-speed transmission of high-capacity data (enhanced mobile broadband (eMBB)), minimization of terminal power and connection of multiple terminals (massive machine type communications (mMTC)), or high reliability and low latency (ultra-reliable and low-latency communications (URLLC)). The wireless communication module (192) can support a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate, for example. The wireless communication module (192) can support various technologies for securing performance in the high-frequency band, such as beamforming, massive MIMO (multiple-input and multiple-output), full-dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large-scale antenna. The wireless communication module (192) can support various requirements specified by the electronic device (101), an external electronic device (101) (e.g., electronic device (104)), or a network system (e.g., a second network (199)). According to one embodiment, the wireless communication module (192) can support a Peak data rate (e.g., 20 Gbps or more) for realizing eMBB, loss coverage (e.g., 164 dB or less) for realizing mMTC, or U-plane latency (e.g., downlink (DL) and uplink (UL) each 0.5 ms or less, or round trip 1 ms or less) for realizing URLLC.

[0061] An antenna module (197) can transmit a signal or power to an external source (e.g., an external electronic device (101)) or receive it from an external source. According to one embodiment, the antenna module may include an antenna comprising a radiator made of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). According to one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as a first network (198) or a second network (199), may be selected from the plurality of antennas, for example, by a communication module (190). A signal or power may be transmitted or received between the communication module (190) and the external electronic device (101) through the selected at least one antenna. According to some embodiments, in addition to the radiator, other components (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as part of the antenna module (197).

[0062] According to various embodiments, the antenna module (197) may form a mmWave antenna module. According to one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent to a first surface (e.g., bottom surface) of the printed circuit board and capable of supporting a specified high frequency band (e.g., mmWave band), and a plurality of antennas (e.g., array antennas) disposed on or adjacent to a second surface (e.g., top surface or side surface) of the printed circuit board and capable of transmitting or receiving a signal of the specified high frequency band.

[0063] At least some of the above components can be connected to each other via a communication method between peripheral devices (e.g., bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)) and exchange signals (e.g., commands or data) with each other.

[0064] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) through a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or different type of device as the electronic device (101). According to one embodiment, all or part of the operations performed on the electronic device (101) may be performed on one or more of the external electronic devices (101) (102, 104 or 108). For example, if the electronic device (101) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) may request one or more external electronic devices (101) to perform at least part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices (101) that receive the above request may execute at least part of the requested function or service, or additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may provide the result as is or additionally processed as at least part of the response to the request. For this purpose, for example, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used. The electronic device (101) may provide ultra-low latency services using, for example, distributed computing or mobile edge computing. In another embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server using machine learning and / or neural networks. According to one embodiment, the external electronic device (104) or the server (108) may be included within a second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.

[0065] The electronic device (101) according to the various embodiments disclosed in this document may be of various forms. The electronic device (101) may include, for example, a portable communication device (e.g., a smartphone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. The electronic device (101) according to the embodiments of this document is not limited to the devices described above.

[0066] The various embodiments of this document and the terms used therein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various modifications, equivalents, or substitutions of said embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of said items unless the relevant context clearly indicates otherwise. In this document, phrases such as "A or B," "at least one of A and B," "at least one of A or B," "A, B or C," "at least one of A, B and C," and "at least one of A, B, or C" may each include any one of the items listed together in the corresponding phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used simply to distinguish said components from other said components and do not limit said components in any other aspect (e.g., importance or order). Where any (e.g., 1st) component is referred to as "coupled" or "connected" to another (e.g., 2nd) component, with or without the terms "functionally" or "communicationly," it means that said any component may be connected to said other component directly (e.g., via a wire), wirelessly, or through a third component.

[0067] As used in various embodiments of this document, the term "module" may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be a component formed integrally, or a minimum unit of said component or a part thereof that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).

[0068] Various embodiments of the present document may be implemented as software (e.g., a program) comprising one or more instructions stored in a storage medium (e.g., internal memory or external memory) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor) of the machine (e.g., an electronic device (101)) may call at least one of the one or more instructions stored in the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code that can be executed by an interpreter. The storage medium readable by the machine may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' merely means that the storage medium is a tangible device and does not contain a signal (e.g., electromagnetic waves), and this term does not distinguish between cases where data is stored semi-permanently and cases where it is stored temporarily.

[0069] According to one embodiment, the method according to the various embodiments disclosed herein may be provided by being included in a computer program product. The computer program product may be traded between a seller and a buyer as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)), or distributed online (e.g., download or upload) through an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product may be temporarily stored or temporarily created on a device-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or a relay server.

[0070] According to various embodiments, each component (e.g., module or program) of the components described above may include a singular or multiple entities, and some of the multiple entities may be separated and placed in other components. According to various embodiments, one or more of the components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Generally or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the multiple components in the same or similar manner as those performed by the corresponding component among the multiple components prior to integration. According to various embodiments, operations performed by the module, program, or other components may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.

[0071] In the following detailed description, the length direction of the electronic device (101) may be defined as the 'Y-axis direction', the width direction as the 'X-axis direction', and / or the height direction (thickness direction) as the 'Z-axis direction'. In the following detailed description, the references to length direction, width direction, and / or height direction (or thickness direction) may refer to the length direction, width direction, and / or height direction (or thickness direction) of the electronic device.

[0072] According to one embodiment, the statement that a component faces 'a certain direction' can be understood to include not only the component facing 'a direction identical to a certain direction' but also the component facing 'a direction parallel to a certain direction'. It should be noted that in the following description, when a component is said to overlap (or stacked) with another component, the description of the arrangement relationship in the height direction described above may apply.

[0073] In describing directions, if 'negative / positive (- / +)' is not indicated, it may be interpreted to include both the positive and negative directions unless otherwise defined. For example, the 'Z-axis direction' may be interpreted to include both the +Z direction and the -Z direction. Similarly, the 'X-axis direction' may be interpreted to include both the +X direction and the -X direction, and the 'Y-axis direction' may be interpreted to include both the +Y direction and the -Y direction. However, in the XYZ spatial coordinate system depicted in the drawing, if 'negative / positive (- / +)' is not indicated on an axis, that axis may be interpreted to face the positive direction unless otherwise specified. In describing directions, facing any one of the three axes of the Cartesian coordinate system may include facing a direction parallel to said axis.

[0074] In the following description of the electronic device (e.g., 100 in FIG. 2), the ‘first direction’ may mean the -Y-axis direction or a direction parallel to the -Y-axis. The ‘second direction’ may mean the +Y-axis direction or a direction parallel to the +Y-axis direction. The ‘third direction’ may mean the Z-axis or X-axis direction or a direction parallel thereto. The ‘third direction’ may mean a direction perpendicular to the ‘first direction’ or the ‘second direction’. The first to third directions described above may not necessarily be axis directions, but may refer to an axis having a larger value for the vector component. Alternatively, they may refer to a direction that is angled away from the said axis. Note that the foregoing description is based on the orthogonal coordinate system described in the drawings for the sake of brevity, and that the description of these directions or components does not limit the various embodiments of the present disclosure.

[0075] FIG. 2 is a perspective view of a wearable electronic device according to various embodiments of the present disclosure.

[0076] The configurations described with reference to FIG. 2 may be substantially identical to the configurations described with reference to FIG. 1. The configurations described with reference to FIG. 2 may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIG. 3 to FIG. 14b to the extent that they do not conflict. The embodiments of FIG. 2 may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIG. 3 to FIG. 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 3 to FIG. 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 1.

[0077] Referring to FIG. 2, the wearable electronic device (200) is an electronic device in the form of glasses (e.g., the electronic device (101) of FIG. 1), and the user can visually perceive surrounding objects or environments while wearing the wearable electronic device (200). For example, the wearable electronic device (200) may be a head mounting device (HMD) or smart glasses capable of providing images directly in front of the user's eyes. The configuration of the wearable electronic device (200) of FIG. 2 may be partially or entirely identical to the configuration of the electronic device (101) of FIG. 1.

[0078] The wearable electronic device (200) of FIG. 2 may be substantially identical to the electronic device (101) of FIG. 1 and may be implemented to be wearable on a user's body. In one embodiment, each of the external electronic devices (102, 104) of FIG. 1 may be the same or a different type of device as the electronic device (101) or the wearable electronic device (200). According to one embodiment, all or part of the operations performed on the electronic device (101) or the wearable electronic device (200) may be performed on one or more of the external electronic devices (102, 104, or 108). For example, when an electronic device (101) or a wearable electronic device (200) needs to perform a function or service automatically or in response to a request from a user or another device, the electronic device (101) or the wearable electronic device (200) may request one or more external electronic devices to perform at least a part of the function or service instead of performing the function or service itself or additionally. One or more external electronic devices that receive the request may perform at least a part of the requested function or service, or additional functions or services related to the request, and transmit the result of the execution to the electronic device (101) or the wearable electronic device (200). The electronic device (101) or the wearable electronic device (200) may provide the result as is or additionally processed as at least part of the response to the request. For example, an external electronic device (102) renders content data executed in an application and transmits it to an electronic device (101) or a wearable electronic device (200), and the electronic device (101) or the wearable electronic device (200) that receives the data can output the content data to a display member (e.g., a display member (105) in FIG. 3).When the electronic device (101) or wearable electronic device (200) detects user movement through an inertial measurement unit sensor, the processor of the electronic device (101) or wearable electronic device (200) (e.g., the processor (120) of FIG. 1) can correct rendering data received from an external electronic device (102) based on the movement information and output it to a display module. Alternatively, the external electronic device (102) can transmit the movement information to request rendering so that screen data is updated accordingly. Depending on various embodiments, the external electronic device (102) may be a device of various forms, such as a case device capable of storing and charging the electronic device (101).

[0079] According to one embodiment, the wearable electronic device (200) may be a body-worn device. For example, the wearable electronic device (200) may be a head-mounting device (HMD), smart glasses, or a video-see-through (VST) device capable of providing images directly to both eyes of the user. In the illustrated embodiment, the wearable electronic device (200) is illustrated as having the appearance of glasses, but the wearable electronic device (200) of the present disclosure is not limited thereto and may have various types of appearances.

[0080] According to various embodiments, the wearable electronic device (200) may include a housing (210) that forms the exterior of the wearable electronic device (200). The housing (210) may provide a space in which components of the wearable electronic device (200) can be placed. For example, the housing (210) may include a lens frame (202) and at least one wearable member (203).

[0081] According to various embodiments, the wearable electronic device (200) may be disposed within a housing (210) and may include a display member (201) capable of outputting a visual image. For example, the wearable electronic device (200) may include at least one display member (201) capable of providing visual information (or an image) to a user. For example, the display member (201) may include a module equipped with a lens, a display, a waveguide, and / or a touch circuit. According to one embodiment, the display member (201) may be formed to be transparent or translucent. According to one embodiment, the display member (201) may include glass made of a translucent material or a window member whose light transmittance can be controlled as the color concentration is adjusted.

[0082] According to various embodiments, the lens frame (202) may accommodate at least a portion of the display member (201). For example, the lens frame (202) may surround at least a portion of the edge of the display member (201). According to one embodiment, the lens frame (202) may position at least one of the display members (201) corresponding to the user's eye. According to one embodiment, the lens frame (202) may be a rim of a general eyeglass structure. According to one embodiment, the lens frame (202) may include at least one closed curve surrounding the display member (201). According to one embodiment, the lens frame (202) may include a first end (202c) and a second end (202d) opposite to the first end (202c). The first end (202c) may be positioned adjacent to the first wearable member (203a), and the second end (202d) may be positioned adjacent to the second wearable member (203b).

[0083] According to various embodiments, the wearable member (203) may extend from the lens frame (202). For example, the wearable member (203) may extend from the end of the lens frame (202) and, together with the lens frame (202), be supported or positioned on the user's body (e.g., ear). According to one embodiment, the wearable member (203) may be rotatably coupled to the lens frame (202) via a hinge structure (229). According to one embodiment, the wearable member (203) may include an inner surface (231c) configured to face the user's body and an outer surface (231d) opposite to the inner surface (231c). According to one embodiment (not shown), at least a portion of the wearable member (203) may be formed of a flexible material (e.g., rubber). For example, at least a portion of the wearable member (203) may be formed in a band shape that surrounds at least a portion of the user's body (e.g., ear).

[0084] According to various embodiments, the wearable electronic device (200) may include a hinge structure (229) configured to allow the wearable member (203) to be folded with respect to the lens frame (202). The hinge structure (229) may be positioned between the lens frame (202) and the wearable member (203). When the user is not wearing the wearable electronic device (200), the user may fold the wearable member (203) so that a portion overlaps with respect to the lens frame (202) to carry or store it. According to one embodiment, the hinge structure (229) may include a first hinge structure (229a) connected to a part of the lens frame (202) (e.g., a first end (202c)) and a first wearing member (203a), and a second hinge structure (229b) connected to a part of the lens frame (202) (e.g., a second end (202d)) and a second wearing member (203b).

[0085] FIG. 3 is an assembled perspective view illustrating the internal configuration of a wearable electronic device according to various embodiments of the present disclosure. FIG. 4 is an exploded perspective view of a wearable electronic device according to various embodiments of the present disclosure.

[0086] The configurations described with reference to FIGS. 3 and 4 may be substantially identical to the configurations described with reference to FIGS. 1 and 2. The configurations described with reference to FIGS. 3 and 4 may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIGS. 5 to 14b to the extent that they do not conflict. The embodiments of FIGS. 3 and 4 may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIGS. 5 to 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIGS. 5 to 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIGS. 1 and 2.

[0087] The configuration of the display member (201), lens frame (202), wearable member (203), and hinge structure (229) of FIG. 3 and / or FIG. 4 may be partially or entirely the same as the configuration of the display member (201), lens frame (202), wearable member (203), and hinge structure (229) of FIG. 2.

[0088] Referring to FIGS. 3 and 4, the wearable electronic device (200) may include a display member (201), a lens frame (202), a wearing member (203), a hinge structure (229), at least one circuit board (241), at least one battery (243), at least one power delivery structure (246), a camera module (250) and / or a sensor module (280).

[0089] According to various embodiments, the wearable electronic device (200) may acquire and / or perceive a visual image of an object or environment in the direction the user is looking at or the wearable electronic device (200) is facing (e.g., -Y direction) using a camera module (250) (e.g., camera module (180) of FIG. 1), and may receive information regarding the object or environment from an external electronic device (e.g., electronic device (102, 104) of FIG. 1, server (108) of FIG. 1, or external electronic device (300) of FIG. 5) through a network (e.g., first network (198) or second network (199) of FIG. 1). In another embodiment, the wearable electronic device (200) may provide the received information regarding the object or environment to the user in an audible or visual form. The wearable electronic device (200) can provide information about the provided object or environment to the user in a visual form through a display member (201) using a display module (e.g., the display module (160) of FIG. 1). For example, the wearable electronic device (200) can implement augmented reality by implementing information about the object or environment in a visual form and combining it with actual images of the user's surrounding environment.

[0090] According to one embodiment, the display members (201) are provided in pairs and can be positioned to correspond to the user's left eye and right eye, respectively, when the wearable electronic device (200) is worn on the user's body. For example, the display members (201) may include a first display member (201a) and a second display member (201b) positioned spaced apart from the first display member (201a). The first display member (201a) may be positioned to correspond to the user's right eye, and the second display member (201b) may be positioned to correspond to the user's left eye.

[0091] According to various embodiments, the display member (201) may include a first surface (F1) facing the direction in which external light is incident (e.g., -Y direction) and a second surface (F2) facing the opposite direction of the first surface (F1) (e.g., +Y direction). When a user is wearing the wearable electronic device (200), at least a portion of the light or image incident through the first surface (F1) may pass through the second surface (F2) of the display member (201) positioned to face the user's left eye and / or right eye and be incident on the user's left eye and / or right eye.

[0092] According to various embodiments, the lens frame (202) may include at least two frames. For example, the lens frame (202) may include a first frame (202a) and a second frame (202b). According to one embodiment, when a user wears the wearable electronic device (200), the first frame (202a) is a frame that faces the user's face, and the second frame (202b) may be a part of the lens frame (202) that is spaced apart from the first frame (202a) in the direction of the user's gaze (e.g., -Y direction).

[0093] According to various embodiments, the wearable electronic device (200) may include a light output module (211) configured to provide an image and / or video to a user. For example, the light output module (211) may include a display panel (not shown) capable of outputting a video and a lens (not shown) corresponding to the user's eye and guiding the video to a display member (201). For example, the user may obtain the video output from the display panel of the light output module (211) through the lens of the light output module (211). According to various embodiments, the light output module (211) may include a device configured to display various information. For example, the light output module (211) may include at least one of a liquid crystal display (LCD), a digital mirror device (DMD), a liquid crystal on silicon (LCoS), an organic light emitting diode (OLED), or a micro light emitting diode (micro LED). According to one embodiment, if the light output module (211) and / or display member (201) includes one of a liquid crystal display, a digital mirror display, or a silicon liquid crystal display, the wearable electronic device (200) may include a light source that irradiates light onto a display area of ​​the light output module (211) and / or display member (201). According to another embodiment, if the light output module (211) and / or display member (201) includes one of an organic light-emitting diode or a micro LED, the wearable electronic device (200) may provide a virtual image to the user without including a separate light source.

[0094] According to various embodiments, at least a portion of the optical output module (211) may be placed within the housing (210). For example, the optical output module (211) may be connected to a display member (201) and may provide an image to a user through the display member (201). For example, an image output from the optical output module (211) may be incident on the display member (201) through an input optical member (not shown) located at one end of the display member (201), and may be radiated toward the user's eyes through a waveguide (not shown) and an output optical member (not shown) located at least a portion of the display member (201).

[0095] According to various embodiments, the wearable electronic device (200) may include a circuit board (241) (e.g., a printed circuit board (PCB), a printed board assembly (PBA), a flexible PCB (FPCB), or a rigid-flexible PCB (RFPCB)) that accommodates components for driving the wearable electronic device (200). For example, the circuit board (241) may include at least one integrated circuit chip, and at least one of a processor (not shown) (e.g., processor (120) of FIG. 1), a memory (not shown) (e.g., memory (130) of FIG. 1), a power management module (not shown) (e.g., power management module (188) of FIG. 1), or a communication module (e.g., communication module (190) of FIG. 1) may be provided on the integrated circuit chip. According to one embodiment, the circuit board (241) may be disposed within a wearable member (203) of a housing (210). For example, the circuit board (241) may include a first circuit board (241a) disposed within a first wearable member (203a) and a second circuit board (241b) disposed within a second wearable member (203b). According to one embodiment, a communication module (e.g., communication module (190) of FIG. 1) may be disposed within the first wearable A first circuit board (241a) located within a member (203a) may be mounted, and a processor (e.g., processor (120) of FIG. 1) may be mounted on a second circuit board (241b) located within a second wearable member (203b). According to one embodiment, the circuit board (241) may be electrically connected to a battery (243) (e.g., battery (189) of FIG. 1) through a power delivery structure (246). According to one embodiment, the circuit board (241) may be an interposer board.

[0096] According to various embodiments, the battery (243) may be electrically connected to components of the wearable electronic device (200) (e.g., a light output module (211), a circuit board (241), a speaker module (245), a microphone module (247) and / or a camera module (250)) and may supply power to the components of the wearable electronic device (200).

[0097] According to various embodiments, at least a portion of the battery (243) may be disposed in the wearable member (203). According to one embodiment, the battery (243) may include a first battery (243a) disposed within the first wearable member (203a) and a second battery (243b) disposed within the second wearable member (203b). According to one embodiment, the battery (243) may be disposed adjacent to the ends (203c, 203d) of the wearable member (203).

[0098] According to various embodiments, a speaker module (245) (e.g., the audio module (170) or sound output module (155) of FIG. 1) can convert an electrical signal into sound. At least a portion of the speaker module (245) may be placed within a wearable member (203) of a housing (210). According to one embodiment, the speaker module (245) may be positioned within the wearable member (203) to correspond to the user's ear. According to one embodiment (e.g., FIG. 3), the speaker module (245) may be placed next to a circuit board (241). For example, the speaker module (245) may be placed between the circuit board (241) and a battery (243). According to another embodiment (not shown), the speaker module (245) may be placed on the circuit board (241). For example, the speaker module (245) may be placed between the circuit board (241) and an inner case (e.g., the inner case (231) of FIG. 4).

[0099] According to various embodiments, the wearable electronic device (200) may include a power delivery structure (246) configured to deliver power from a battery (243) to an electronic component of the wearable electronic device (200) (e.g., an optical output module (211)). For example, the power delivery structure (246) is electrically connected to the battery (243) and / or a circuit board (241), and the circuit board (241) can deliver power received through the power delivery structure (246) to the optical output module (211). According to one embodiment, the power delivery structure (246) may be a configuration capable of delivering power. For example, the power delivery structure (246) may include a flexible printed circuit board or a wire. For example, the wire may include a plurality of cables (not shown). In various embodiments, the form of the power delivery structure (246) may be varied in consideration of the number and / or type of cables, etc.

[0100] According to various embodiments, a microphone module (247) (e.g., the input module (150) and / or audio module (170) of FIG. 1) can convert sound into an electrical signal. According to one embodiment, the microphone module (247) may be placed within a lens frame (202). For example, at least one microphone module (247) may be placed at the bottom (e.g., facing the -X axis) and / or the top (e.g., facing the +X axis) of the wearable electronic device (200). According to various embodiments, the wearable electronic device (200) can more clearly recognize the user's voice using voice information (e.g., sound) obtained from at least one microphone module (247). For example, the electronic device (200) can distinguish voice information and ambient noise based on the obtained voice information and / or additional information (e.g., low-frequency vibrations of the user's skin and bones). For example, the wearable electronic device (200) can clearly recognize the user's voice and perform a function that reduces ambient noise (e.g., noise canceling).

[0101] According to various embodiments, the camera module (250) can capture still images and / or video. The camera module (250) may include at least one of a lens, at least one image sensor, an image signal processor, or a flash. According to one embodiment, the camera module (250) may be placed within a lens frame (202) and around a display member (201).

[0102] According to various embodiments, the camera module (250) may include at least one first camera assembly (400). According to one embodiment, the first camera assembly (400) may capture the trajectory of a user's eye (e.g., pupil) or gaze. For example, the first camera assembly (400) may include a light-emitting unit (e.g., IR LED) (not shown) configured to emit light in the infrared band and a camera structure (not shown) configured to capture the reflection pattern of the light emitted by the light-emitting unit to the user's eye. According to one embodiment, a processor (e.g., processor (120) of FIG. 1) may adjust the position of the virtual image so that the virtual image projected onto the display member (201) corresponds to the direction in which the user's pupil gazes. According to one embodiment, the first camera assembly (400) may track the trajectory of the user's eye or gaze using a plurality of first camera assemblies (400) of the same specifications and performance.

[0103] According to one embodiment, the first camera assembly (400) may periodically or non-periodically transmit information related to the trajectory of a user's eye or gaze (e.g., trajectory information) to a processor (e.g., processor (120) of FIG. 1). According to another embodiment, the first camera assembly (400) may transmit the trajectory information to the processor when it detects that the user's gaze has changed based on the trajectory information (e.g., the eye moves beyond a reference value while the head is not moving).

[0104] In the present disclosure, the first camera assembly (400) may be named the first camera module or substantially the same.

[0105] According to various embodiments, the camera module (250) may include a second camera module (253). According to one embodiment, the second camera module (253) may capture an external image. According to one embodiment, the second camera module (253) may capture an external image through a second optical hole (223) formed in the second frame (202b). For example, the second camera module (253) may include a high-resolution color camera and may be a high-resolution (HR) or photo-video (PV) camera. According to one embodiment, the second camera module (253) may provide an autofocus (AF) function and an optical image stabilizer (OIS) function.

[0106] According to various embodiments (not shown), the wearable electronic device (200) may include a flash (not shown) positioned adjacent to the second camera module (253). For example, the flash (not shown) may provide light to increase the brightness (e.g., illumination) around the wearable electronic device (200) when acquiring an external image of the second camera module (253), and may reduce the difficulty of acquiring an image due to a dark environment, the mixing of various light sources, and / or light reflection.

[0107] According to various embodiments, the camera module (250) may include at least one third camera module (255). According to one embodiment, the third camera module (255) may capture a user's movements through a first optical hole (221) formed in the lens frame (202). For example, the third camera module (255) may capture a user's gesture (e.g., hand movement). The third camera module (255) and / or the first optical hole (221) may be positioned at each end of the lens frame (202) (e.g., the second frame (202b)), for example, at each end of the lens frame (202) (e.g., the second frame (202b)) in the Z direction. According to one embodiment, the third camera module (255) may be a camera with a global shutter (GS) type. For example, the third camera module (255) may be a camera supporting 3DoF (degrees of freedom) or 6DoF, and may provide 360-degree spatial (e.g., omnidirectional), position recognition, and / or motion recognition. According to one embodiment, the third camera module (255) may be a stereo camera and may perform simultaneous localization and mapping (SLAM) and user motion recognition functions using multiple global shutter type cameras of the same specifications and performance. According to one embodiment, the third camera module (255) may include an IR (infrared) camera (e.g., a TOF (time of flight) camera or a structured light camera). For example, the IR camera may operate as at least part of a sensor module (e.g., the sensor module (176) of FIG. 1) for detecting the distance to a subject.

[0108] According to one embodiment, at least one of the first camera module (or first camera assembly) (400) or the third camera module (255) may be replaced with a sensor module (e.g., the sensor module (176) of FIG. 1). For example, the sensor module may include at least one of a vertical cavity surface emitting laser (VCSEL), an infrared sensor, and / or a photodiode. For example, the photodiode may include a positive intrinsic negative (PIN) photodiode or an avalanche photodiode (APD). The photodiode may be interpreted as a photodetector or a photosensor.

[0109] According to one embodiment, at least one of the first camera module (400), the second camera module (253), or the third camera module (255) may include a plurality of camera modules (not shown). For example, the second camera module (253) may be composed of a plurality of lenses (e.g., wide-angle and telephoto lenses) and image sensors and may be placed on one side of the wearable electronic device (200) (e.g., a side facing the -Y direction). For example, the wearable electronic device (200) may include a plurality of camera modules, each having different attributes (e.g., angle of view) or functions, and may be controlled to change the angle of view of the camera modules based on user selection and / or trajectory information. For example, at least one of the plurality of camera modules may be a wide-angle camera and at least another may be a telephoto camera.

[0110] According to various embodiments, a processor (e.g., processor (120) of FIG. 1) can determine the movement of the wearable electronic device (200) and / or the movement of the user by using information of the wearable electronic device (200) obtained using at least one of a gesture sensor, a gyroscope sensor, or an accelerometer sensor of a sensor module (e.g., sensor module (176) of FIG. 1) and a user's movement (e.g., approach of the user's body to the electronic device (200)) obtained using a third camera module (255). According to one embodiment, the wearable electronic device (200) may include, in addition to the described sensors, a magnetic (geomagnetic) sensor capable of measuring orientation using a magnetic field and magnetic force and / or a Hall sensor capable of obtaining movement information (e.g., direction of movement or distance of movement) using the strength of the magnetic field. For example, the processor can determine the movement of the electronic device (200) and / or the movement of the user based on information obtained from the magnetic (geomagnetic) sensor and / or the Hall sensor.

[0111] According to various embodiments (not shown), the wearable electronic device (200) may perform an input function (e.g., touch and / or pressure sensing function) capable of interacting with a user. For example, a component configured to perform a touch and / or pressure sensing function (e.g., a touch sensor and / or pressure sensor) may be placed in at least a part of the wearable member (203). The wearable electronic device (200) may control a virtual image output through a display member (201) based on information obtained through said component. For example, the sensor associated with the touch and / or pressure sensing function may be configured in various ways, such as a resistive type, a capacitive type, an electromagnetic induction type (EM), or an optical type. According to one embodiment, the component configured to perform the touch and / or pressure sensing function may be partially or entirely identical to the configuration of the input module (150) of FIG. 1.

[0112] According to various embodiments, the wearable electronic device (200) may include a reinforcing member (260) that is disposed in the internal space of the lens frame (202) and is formed to have a higher rigidity than the rigidity of the lens frame (202).

[0113] According to various embodiments, the electronic device (200) may include a lens structure (273). The lens structure (273) may refract at least a portion of light. For example, the lens structure (273) may be a prescription lens with a specified refractive power. According to one embodiment, at least a portion of the lens structure (273) may be positioned behind the display member (201) (e.g., in the +Y direction). For example, the lens structure (273) may be positioned between the display member (201) and the user's eye.

[0114] According to various embodiments, the housing (210) may include a hinge cover (227) capable of concealing a portion of the hinge structure (229). Another portion of the hinge structure (229) may be received or concealed between the inner cover (231) and the outer cover (233) described later.

[0115] According to various embodiments, the wearable member (203) may include an inner cover (231) and an outer cover (233). For example, the inner cover (231) is a cover configured to face or directly contact the user's body and may be made of a material with low thermal conductivity, for example, a synthetic resin. According to one embodiment, the inner cover (231) may include an inner surface facing the user's body (e.g., inner surface (231c) of FIG. 2). For example, the outer cover (233) may include a material capable of at least partially transferring heat (e.g., a metallic material) and may be coupled to face the inner cover (231). According to one embodiment, the outer cover (233) may include an outer surface opposite to the inner surface (231c) (e.g., outer surface (231d) of FIG. 2). In one embodiment, at least one of the circuit board (241) or the speaker module (245) may be accommodated in a space separated from the battery (243) within the wearable member (203). In the illustrated embodiment, the inner cover (231) may include a first cover (231a) that accommodates the circuit board (241) and / or the speaker module (245) and a second cover (231b) that accommodates the battery (243), and the outer cover (233) may include a third cover (233a) that is coupled to face the first cover (231a) and a fourth cover (233b) that is coupled to face the second cover (231b). For example, the first cover (231a) and the third cover (233a) can be combined (hereinafter referred to as the 'first cover portion (231a, 233a)') to accommodate a circuit board (241) and / or a speaker module (245), and the second cover (231b) and the fourth cover (233b) can be combined (hereinafter referred to as the 'second cover portion (231b, 233b)') to accommodate a battery (243).

[0116] According to various embodiments, the first cover portion (231a, 233a) is rotatably coupled to the lens frame (202) through a hinge structure (229), and the second cover portion (231b, 233b) can be connected or mounted to the end of the first cover portion (231a, 233a) through a connecting structure (235). According to one embodiment, the part of the connecting structure (235) that contacts the user's body may be made of an elastic material with low thermal conductivity, such as silicone, polyurethane, or rubber, and the part that does not contact the user's body may be made of a material with high thermal conductivity (e.g., a metal material). For example, when heat is generated in the circuit board (241) or battery (243), the connecting structure (235) can block the transfer of heat to the part that contacts the user's body and disperse or release the heat through the part that does not contact the user's body. According to one embodiment, the portion of the connection structure (235) configured to come into contact with the user's body may be interpreted as part of the inner cover (231), and the portion of the connection structure (235) that does not come into contact with the user's body may be interpreted as part of the outer cover (233). According to one embodiment (not shown), the first cover (231a) and the second cover (231b) may be formed integrally without the connection structure (235), and the third cover (233a) and the fourth cover (233b) may be formed integrally without the connection structure (235). According to various embodiments, in addition to the illustrated components, other components (e.g., the antenna module (197) of FIG. 1) may be included, and information regarding objects or environments may be received from an external electronic device (e.g., the electronic device (102, 104) of FIG. 1, the server (108) of FIG. 1, or the external electronic device (300) of FIG. 5) through a network (e.g., the first network (198) or the second network (199) of FIG. 1) using a communication module (e.g., the communication module (190) of FIG. 1).

[0117] According to one embodiment, the lens frame (202) may include a connecting portion (274) between a first marking member (201a) and a second marking member (201b). For example, the connecting portion (274) may be interpreted as a portion corresponding to the nose pad of the glasses.

[0118] According to various embodiments, the electronic device (200) may include a connection member (205). According to one embodiment, a circuit board (241) is connected to the connection member (205) and can transmit electrical signals to components of the electronic device (200) (e.g., a light output module (211) and / or a camera module (250)) through the connection member (205). For example, a control signal transmitted from a processor located on the circuit board (241) (e.g., the processor (120) of FIG. 1) can be transmitted to the electronic components using at least a portion of the connection member (205). For example, at least a portion of the connection member (205) may include wiring (not shown) electrically connected to the components of the electronic device (200).

[0119] According to various embodiments, the connecting member (205) may include a first connecting member (205a) in which at least a portion is disposed within a first wearing member (203a) and a second connecting member (205b) in which at least a portion is disposed within a second wearing member (203b). According to one embodiment, at least a portion of the first connecting member (205a) and / or the second connecting member (205b) may face a hinge structure (229). For example, the first connecting member (205a) may extend from a first circuit board (241a) across the hinge structure (229) into the interior of a lens frame (202). The second connecting member (205b) may extend from a second circuit board (241b) across the hinge structure (229) into the interior of a lens frame (202). For example, a portion of the first connecting member (205a) and a portion of the second connecting member (205b) may be placed within the wearing member (203), and another portion may be placed within the lens frame (202).

[0120] According to one embodiment, the first connecting member (205a) and the second connecting member (205b) may include a structure that can be folded or unfolded based on the rotation of the hinge structure (229). For example, the first connecting member (205a) and / or the second connecting member (205b) may include a flexible printed circuit board (FPCB). According to one embodiment, the first connecting member (205a) may be electrically and / or mechanically connected to the first circuit board (241a). According to one embodiment, the second connecting member (205b) may be electrically and / or mechanically connected to the second circuit board (241b). According to one embodiment, the first connecting member (205a) and / or the second connecting member (205b) may include a structure for transmitting a signal (e.g., wiring and / or cables).

[0121] According to various embodiments, a sensor module (280) (e.g., sensor module (176) of FIG. 1) can detect light passing through a display member (201). According to one embodiment, the sensor module (280) may include a first sensor module (281) capable of detecting light passing through a first display member (201a) and a second sensor module (282) capable of detecting light passing through a second display member (201b). For example, the first sensor module (281) can detect light from the rear (e.g., +Y direction) of the first display member (201a), and the second sensor module (282) can detect light from the rear of the second display member (201b). According to one embodiment, the sensor module (280) may include a third sensor module (283) capable of detecting light from the front (e.g., -Y direction) of the display member (201). For example, the third sensor module (283) can detect light in front of the display member (201) (e.g., in the -Y direction). According to one embodiment, the sensor module (280) may be an illuminance sensor. According to one embodiment, the third sensor module (283) may have some or all of the same configuration as the second camera module (253).

[0122] FIG. 5 is a conceptual diagram showing a camera coupled to a wearable electronic device according to one embodiment of the present disclosure.

[0123] The configurations described with reference to FIG. 5 may be substantially identical to the configurations described with reference to FIG. 1 through 4. The configurations described with reference to FIG. 5 may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIG. 6 through 14b to the extent that they do not conflict. The embodiments of FIG. 5 may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIG. 6 through 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 6 through 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 1 through 4.

[0124] According to one embodiment, a wearable electronic device (e.g., 200 of FIG. 4) may include a second frame (202b). The second frame (202b) may be formed with a portion having a curvature. The second frame (202b) may include an opening (3111). The second frame (202b) may include a plurality of openings (3111). The opening (3111) may be formed in a connecting portion (274) of the second frame (202b). The opening (3111) may be formed on one side of the second frame (202b) or in the connecting portion (274). The opening (3111) may be formed in the connecting portion (274) of the second frame toward the user's eye. An electronic component may be coupled to the inside of the second frame (202b).

[0125] According to one embodiment, a wearable electronic device (e.g., 200 of FIG. 4) may include a first camera module (400). Hereinafter, the first camera module may be referred to as a camera assembly (400) in the present disclosure. The wearable electronic device (200) may include a plurality of camera assemblies (400).

[0126] According to one embodiment, the camera assembly (400) may be exposed to the outside of the wearable electronic device (200) through an opening (3111) formed in the second frame (202b). The camera assembly (400) may be exposed in the +Y direction to recognize the user's iris inside the wearable electronic device (200) or housing (210) through the opening (3111) formed in the second frame (202b). For example, the camera assembly (400) may be placed in an opening (3111) formed in a curved portion of the front cover (311). The camera assembly (400) may be placed in an opening (3111) formed in a curved portion of the connecting portion (274). According to one embodiment, the camera assembly (400) may be placed such that the center of the camera lens is aligned with the center of the opening (3111).

[0127] A camera assembly (400) according to one embodiment may include a meta lens (401). A plurality of supercells (e.g., supercells (420) of FIG. 7a) may be spaced apart and arranged on one surface of the meta lens (401). Meta particles (e.g., a plurality of meta particles (430) of FIG. 7a) may be arranged on one surface of the meta lens (401). The meta lens (401) may include a substrate (e.g., 410 of FIG. 7a) comprising a first surface (e.g., 411 of FIG. 7a) and a second surface (e.g., 412 of FIG. 7a), and a plurality of supercells (e.g., 420 of FIG. 7a) arranged on the first surface (e.g., 411 of FIG. 7a). For example, a plurality of supercells (e.g., 420 in FIG. 7a) may be arranged on a flat substrate (e.g., 410 in FIG. 7a) to diffract light and reach an image sensor (404). According to one embodiment, a meta-lens (401) comprising a flat substrate (410) and a plurality of supercells (e.g., 420 in FIG. 7a) may be formed with a thin thickness compared to a concave or convex lens. For example, the size of the camera assembly (400) may be reduced through a meta-lens (401) with a thin thickness that forms an image at the same distance compared to a concave or convex lens.

[0128] According to one embodiment, the camera assembly (400) may include a barrel (402). The barrel (402) may be positioned to surround a meta-lens (401). The barrel (402) may be positioned at an opening (3111) while surrounding the meta-lens (401) so that it is exposed to the outside through the opening (3111) on one side. The barrel (402) may secure the meta-lens (401). The barrel (402) may guide light so that light passing through the meta-lens (401) reaches an image sensor (404). The barrel (402) may be formed in a cylindrical or columnar shape.

[0129] According to one embodiment, the camera assembly (400) may include a bracket (403). The bracket (403) may support the barrel (402). For example, the bracket (403) may support the barrel (402) so that an image sensor (404) disposed inside the barrel (402) and a meta lens (401) disposed on one side of the barrel (402) may be fixed in the second frame (202b). The bracket (403) may fix the camera, including the barrel (402), the image sensor (404), and the meta lens (401), to the second frame (202b).

[0130] According to one embodiment, the camera assembly (400) may include an image sensor (404). The image sensor (404) may include an image plane (e.g., image plane (6041) of FIG. 8a) on which light or an image passing through the meta lens (401) is formed. The image sensor (404) may convert the light or image passing through the meta lens (401) into an electrical signal and display it to a user through a display member (e.g., display member (205) of FIG. 3). The image sensor (404) may convert the light or image passing through the meta lens (401), for example, information related to the trajectory of the user's eyes or gaze (e.g., trajectory information), into an electrical signal and transmit it to a processor (e.g., processor (120) of FIG. 1) periodically or non-periodically. According to another embodiment, the image sensor (404) can transmit the trajectory information to the processor when it detects that the user’s gaze has changed (e.g., the eyes move more than a reference value while the head is not moving) based on the trajectory information recognized as light or an image passing through the meta lens (401).

[0131] The camera assembly (400) described with reference to FIGS. 4 and 5 may be substantially the same as the first camera module described with reference to FIGS. 2 and 3.

[0132] Hereinafter, the camera assembly (400) referred to in the present disclosure is not limited to the camera assembly (400) described with reference to FIGS. 4 and 5, but may be likewise applied to a second camera module (e.g., 253 in FIG. 4) and a third camera module (e.g., 255 in FIG. 4) or other additional cameras.

[0133] FIG. 6 is a conceptual diagram of a camera's meta lens viewed from the +Y direction according to one embodiment of the present disclosure.

[0134] FIG. 7a is a conceptual diagram showing a part of cross-section A-A' of FIG. 6 according to one embodiment of the present disclosure.

[0135] The configurations described with reference to FIGS. 6 and 7a may be substantially identical to the configurations described with reference to FIGS. 1 through 5. The configurations described with reference to FIGS. 6 and 7a may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIGS. 7b through 14b to the extent that they do not conflict. The embodiments of FIGS. 6 and 7a may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIGS. 8b through 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIGS. 7b through 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIGS. 1 through 5.

[0136] According to one embodiment, the meta lens (401) may include a first surface (411) facing a first direction (-Y direction). The meta lens (401) may include a first surface (411) facing the first direction (-Y direction) and facing an image sensor (e.g., 404 in FIG. 5). The meta lens (401) may include a second surface (412) facing a direction opposite to the first direction (-Y direction). The meta lens (401) may include a second surface (412) facing a direction opposite to the first direction (-Y direction) and into which light is incident. The first surface (411) and / or the second surface (412) may be formed as flat surfaces parallel to a direction perpendicular to the first direction (X-axis or Z-axis direction). For example, the first surface (411) and / or the second surface (412) may be formed as flat surfaces so that light reaches the image sensor (e.g., 404 in FIG. 5) without forming convex or concave regions, thereby reducing the thickness of the meta-lens (401). The meta-lens (401) may be configured to have a thickness less than or equal to the wavelength (nm) of the incident light. The meta-lens (401) may comprise amorphous silicon or silica (SiO2).

[0137] According to one embodiment, the meta lens (401) may include a substrate (410). The substrate (410) may be formed in a circular shape. The substrate (410) may include a first surface (411) facing in the -Y direction. The first surface (411) may face an image sensor (e.g., 404 in FIG. 5). The substrate (410) may include a second surface (412) facing in the +Y direction. The second surface (412) may be visually exposed from the outside through an opening of an electronic device (e.g., an opening (3111) in FIG. 3). Light passing through the meta lens (401) may be incident on the second surface (412). Light reflected from the iris of a user wearing an electronic device (e.g., 200 in FIG. 4) may pass through the second surface (412). The substrate (410) may include amorphous silicon or silica (SiO2). The substrate (410) may be formed with a thickness less than the wavelength (nm) of the light incident on the meta-lens (401). The substrate (410) may be formed in a circular shape. For example, the substrate (410) may be formed in a circular shape to diffract light through a plurality of supercells (420) arranged on the first surface (411) of the substrate (410) regardless of the polarization or wavelength of the incident light. The first surface (411) may be formed as a plane parallel to a direction perpendicular to the first direction (-Y direction). The second surface (412) may be formed as a plane parallel to a direction perpendicular to the first direction (-Y direction).

[0138] According to one embodiment, the meta lens (401) may include a plurality of supercells (420). The meta lens (401) may include a plurality of supercells (420) on a first surface (411). A plurality of supercells (420) may be disposed on the first surface (411). A plurality of supercells (420) may be disposed on the first surface (411) of a substrate (410). A plurality of supercells (420) may be disposed at a certain distance apart from each other. For example, a first supercell (420a) may be disposed at the center of the meta lens (401), and a second supercell (420b) and a third supercell (420c) may be disposed at a certain distance apart. The second supercell (420b) and the third supercell (420c) may be placed in a single zone by sharing at least one metaparticle (e.g., the second-1 metaparticle (431b) and the third-4 metaparticle (434c)). For example, a plurality of supercells (420) may be divided into multiple zones or share a single zone to form a diffraction lens that diffracts incident light. For example, a plurality of supercells (420) placed in a specific zone may each form a wavefront on an image sensor (e.g., 404 in FIG. 5) of light diffracted in each zone (e.g., zone S1) through the number of metaparticles (430), the spacing distance of the metaparticles (430) (e.g., the first spacing distance (T1) in FIG. 7), the width of the metaparticles (430) (e.g., the width (w1) in FIG. 7), and the phase delay value of the light passing through each metaparticle (430). Multiple supercells (420) can diffract light in a certain direction by delaying the phase of light differently through an array of each meta-particle (430).

[0139] According to one embodiment, a plurality of supercells (420) may include a plurality of metaparticles (430). A plurality of supercells (420) may each include a supercell (420a, 420b, 420c). Each supercell (420a, 420b, 420c) may include a plurality of metaparticles (430) spaced apart from each other by a first separation distance (e.g., T1 in FIG. 7a) along a second direction (X-axis direction) perpendicular to a first direction (-Y direction) so as to diffract light (L) incident on a metalens (401) in a certain direction. A plurality of supercells may include at least three or more metaparticles (430).

[0140] According to one embodiment, a plurality of supercells (420) may include a first supercell (420a). The first supercell (420a) may be placed in a first zone (s1) of a first surface (411). The first supercell (420a) may include a plurality of first metaparticles (430a). The plurality of first metaparticles (430a) may be spaced apart in a second direction (-Y direction) perpendicular to the first direction. According to one embodiment, among the plurality of first metaparticles (430a), a first-1 metaparticle (431a) may diffract light such that when light incident through the second surface (412) passes through, it has a smaller phase delay value than other first metaparticles (e.g., a first-2 metaparticle (432a)). According to one embodiment, among a plurality of first metaparticles (430a), the first-sixth metaparticle (436a) can diffract light such that when light incident through the second surface (412) passes through, it has a larger phase delay value than other first metaparticles (e.g., first-fifth metaparticle (435a)). For example, each first metaparticle (430a) can be configured to delay the phase of the light differently so that the light travels in one direction. As another example, when arranged in the +X direction spaced apart from the first-1st metaparticle (431a) and the first-sixth metaparticle (436a) is the last metaparticle (430a), the phase value of the delayed light can increase as it is spaced apart in the +X direction. Through this, the light passing through the first-1 meta-particle (431a) travels the farthest for the same amount of time, and the light passing through the first-6 meta-particle (436a) travels the closest for the same amount of time, so that the wavefront of the light passing through the first supercell (420a) can be inclined with respect to the first plane (411).

[0141] According to one embodiment, a plurality of supercells (420) may include a second supercell (420b). A plurality of supercells (420) may include a third supercell (420c). The second supercell (420b) and the third supercell (420) may be arranged in one zone S2 by sharing a second-1 meta-particle (431b) and a third-4 meta-particle (434c) as a single meta-particle. For example, the 3-1 meta-particle (431c), 3-2 meta-particle (432c), 3-3 meta-particle (433c) and 3-4 meta-particle (434c) may be spaced apart in order in the +X direction, and the 3-4 meta-particle (434c) may be arranged to become the 2-1 meta-particle (421b) of the 2-spessel (430b), and the 2-2 meta-particle (422b) to the 2-5 meta-particle (425b) may be arranged in order in the +X direction.

[0142] According to one embodiment, among the plurality of second metaparticles (430b), the second-1 metaparticle (431b) can diffract light such that when light incident through the second surface (412) passes through it, it has a smaller phase delay value than other second metaparticles (e.g., second-2 metaparticle (432b)). According to one embodiment, among the plurality of second metaparticles (430b), the second-4 metaparticle (434c) can diffract light such that when light incident through the second surface (412) passes through it, it has a larger phase delay value than other third metaparticles (e.g., second-3 metaparticle (433c)). For example, each of the second metaparticles (430b) can be configured to delay the phase of the light differently so that the light travels in one direction. As another example, when the second-fourth metaparticle (434c) is spaced apart from the second-first metaparticle (431b) and arranged in the +X direction, and the second-fourth metaparticle (434c) is the metaparticle that causes the largest phase delay among the third metaparticles (430c), the phase value of the delayed light can increase as the metaparticles (430b) are spaced apart in the +X direction. Through this, the light passing through the second-first metaparticle (431b) travels furthest from the first surface (411) for the same amount of time, and the light passing through the second-fourth metaparticle (434b) travels closest to the first surface (411) for the same amount of time, so that the wavefront of the light passing through the second supercell (420b) can be inclined with respect to the first surface (411).

[0143] According to one embodiment, among the plurality of third metaparticles (430c), the third-1 metaparticle (431c) can diffract light such that when light incident through the second surface (412) passes through it, it has a smaller phase delay value than other third metaparticles (e.g., third-2 metaparticle (432c)). According to one embodiment, among the plurality of third metaparticles (430c), the third-3 metaparticle (433c) can diffract light such that when light incident through the second surface (412) passes through it, it has a larger phase delay value than other third metaparticles (e.g., third-2 metaparticle (432c)). For example, each of the third metaparticles (430c) can be configured to delay the phase of the light differently so that the light travels in one direction. As another example, when the third-3 metaparticles (433b) are spaced apart from the third-1 metaparticle (431c) and arranged in the +X direction, and the third-3 metaparticles (433b) cause the largest phase delay among the third metaparticles (430c), the phase value of the delayed light can increase as the third metaparticles (430b) are spaced apart in the +X direction. Through this, the light passing through the third-1 metaparticle (431c) travels furthest from the first surface (411) for the same amount of time, and the light passing through the third-3 metaparticle (433c) travels closest to the first surface (411) for the same amount of time, so that the wavefront of the light passing through the third supercell (420c) can be inclined with respect to the first surface (411).

[0144] According to one embodiment, a plurality of supercells (420) may be arranged circularly at the center of a lens. The plurality of supercells (420) may include a first portion (4201) arranged circularly at the center of the lens. The plurality of supercells (420) may be arranged in an annular shape. The plurality of supercells (420) may include a second portion (4202) arranged in an annular shape along a first surface (411) in the X-axis or Y-axis direction from the first portion (4201). The second portion (4202) may be a concentric structure spaced apart from the first portion (4201) in the X-axis or Y-axis direction. For example, the first portion (4201) and the second portion (4202) may be arranged in a concentric structure and configured to diffract light independently of polarization or wavelength to form a wavefront on an image sensor (e.g., 404 in FIG. 5).

[0145] According to one embodiment, a plurality of meta-particles (430) of a plurality of supercells (420) may be formed integrally with the substrate (410). A plurality of meta-particles (430) may be formed integrally on a first surface (411). For example, the substrate (410) may include a first surface (411) that is etched to form a plurality of meta-particles (430) protruding in a first direction (-Y direction) from the first surface (411).

[0146] FIG. 7b is a conceptual diagram of a supercell of a meta-lens according to one embodiment of the present disclosure.

[0147] According to one embodiment, a meta-lens (e.g., 401 in FIG. 7a) may include a first surface (511) and a second surface (512). The meta-lens (e.g., 401 in FIG. 7a) may include a supercell (520) disposed on the first surface (511). The supercell (520) may include a plurality of meta-meta-particles (530).

[0148] The configurations described with reference to FIG. 7b may be substantially identical to the configurations described with reference to FIG. 1 through 7a. The configurations described with reference to FIG. 7b may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIG. 8a through 14b to the extent that they do not conflict. The embodiments of FIG. 7b may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIG. 8a through 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 8a through 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 1 through 7a.

[0149] According to one embodiment, a plurality of meta particles (530) may include a first meta particle (531). A plurality of meta particles (530) may include a second meta particle (532). A plurality of meta particles (530) may include a third meta particle (533). A plurality of meta particles (530) may include a fourth meta particle (534).

[0150] According to one embodiment, the supercell (520) may be composed of a plurality of meta particles (530) in which the first meta particle (531) to the fourth meta particle (534) are arranged in order along the first surface (411).

[0151] According to one embodiment, a plurality of meta particles (530) may be spaced apart at a constant interval (T1). A plurality of meta particles (530) may be spaced apart along a first surface (411) at a constant interval (T1). A plurality of meta particles (530) may be spaced apart at a constant interval (T1) such that the phase delay value of each particle increases at a constant interval. A plurality of meta particles (530) may be arranged such that the period T2 is the period in which a fifth meta particle (535) having a phase delay value of 0 or 2π is spaced apart at a constant interval (T1) from a first meta particle (531) having a phase delay value of 0. For example, when the phase delay value of the light passing through the first meta-particle (531) is 0 and the phase delay value of the light passing through the fourth meta-particles is 4π / 3, the fifth meta-particle (535) may be positioned such that the phase delay value of the light passing through the fifth meta-particle (535) is 0 or 2π, and the fifth meta-particle (535) is positioned such that it is spaced T2 away from the first meta-particle (531) and spaced a constant distance (T1) away from the fourth meta-particle (534).

[0152] According to one embodiment, a plurality of meta-meta particles (530) may be arranged such that the maximum phase difference value of light passing through the supercell (520) is 4π / 3. The plurality of meta-meta particles (530), such that the first meta particle (531) to the fourth meta particle (534), may be arranged such that two adjacent meta particles have the same phase delay difference value. For example, when light incident on the second surface (412) (e.g., light (L) in FIG. 8a) passes through one of two adjacent meta particles (e.g., the first meta particle (531)) and the other (e.g., the second meta particle (532)), and the resulting phase delay increases by the same amount of π / 3, the first meta particle (531) and the fourth meta particle (534) may be arranged such that their maximum phase delay values ​​are 4π / 3.

[0153] According to one embodiment, each of the plurality of meta particles (530) (e.g., the first meta particle (531)) may have a first height (h1) defined from the first plane. Each of the plurality of meta particles (530) may have a width (w1) along the first plane. The plurality of meta particles (530) may have a first height (h1) and different widths (w1) and be arranged along the first plane (411). For example, they may be arranged so that the difference between the phase delay value passing through the first meta particle (531) with the smallest width (w1) and the phase delay value passing through the fourth meta particle (534) with the largest width (w4) is 4π / 3. According to one embodiment, the plurality of meta particles (530) may each have a first height (h1) and be arranged along the first plane (511) such that the widths (w1 to w4) increase.

[0154] According to one embodiment, each of the plurality of meta particles (530) (e.g., the first meta particle (531)) may have the shape of a cylinder. Each of the plurality of meta particles (530) may be formed as a cylinder in which the bottom surface (5311) is positioned on the first surface (511) so as to allow light to reach an image sensor (e.g., 404 in FIG. 5) regardless of the polarization of the light.

[0155] According to one embodiment, the supercell (520) may be a structure in which a plurality of meta-particles (530) are arranged such that the maximum value of the difference in phase delay generated through the plurality of meta-particles (530) is less than 2π. For example, as described below in FIG. 12a, even when the maximum difference in phase delay generated by the supercell (520) is less than 2π, a wavefront substantially identical to that when the maximum difference in phase delay generated by the supercell (520) is 2π can be formed on an image sensor (e.g., 404 in FIG. 5).

[0156] The supercell (520) described with reference to FIG. 7b may be substantially identical to the plurality of supercells (420) of FIG. 7a. The plurality of meta-meta particles (530) described with reference to FIG. 7b may be substantially identical to the plurality of meta particles (430) of FIG. 7a.

[0157] FIG. 8a is a conceptual diagram showing the state in which light passing through a meta lens of a camera according to one embodiment of the present disclosure reaches an image sensor.

[0158] FIG. 8b is a conceptual diagram showing an enlarged view of region S1 of FIG. 8a according to one embodiment of the present disclosure.

[0159] The configurations described with reference to FIGS. 8a and 8b may be substantially identical to the configurations described with reference to FIGS. 1 through 7b. The configurations described with reference to FIGS. 8a and 8b may be substantially identical to the configurations according to one embodiment of the present disclosure described with reference to FIGS. 9b through 14b to the extent that they do not conflict. The embodiments of FIGS. 8a and 8b may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIGS. 9b through 14b. Configurations not described below may be substantially identical to the configurations according to one embodiment of the present disclosure of FIGS. 9b through 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to one embodiment of the present disclosure of FIGS. 1 through 7b.

[0160] According to one embodiment, a camera assembly (e.g., 400 of FIG. 5) may include an image sensor (604) spaced D1 away from a meta lens (601). Hereinafter, the meta lens (601) may be a meta lens of FIG. 5 to 7b (e.g., 401 of FIG. 6).

[0161] According to one embodiment, a meta-lens (e.g., 401 in FIG. 7a) may be configured as a diffraction lens divided into multiple zones by having a plurality of supercells (620) disposed in each zone (e.g., zone S1 in FIG. 7a). The diffraction of light by the meta-lens (e.g., 401 in FIG. 7a) may be determined according to the number of a plurality of meta-particles (e.g., 530 in FIG. 7b) and Equation 1.

[0162]

[0163] : Wavelength of light (nm)

[0164] : Angle of incidence of light ( or rad)

[0165] : Angle of light diffraction ( or rad)

[0166] M: Number of meta-particles

[0167] P: Arrangement period of meta-particles

[0168] According to one embodiment, the diffraction efficiency of light by a meta-lens (e.g., 401 in FIG. 7a) can be determined by the distribution of phase delay values ​​of light that are delayed by a plurality of meta-particles (e.g., 530 in FIG. 7b) constituting a plurality of supercells (620). For example, when the resolution of an image formed on an image sensor (e.g., 404 in FIG. 5) is determined according to the diffraction efficiency, the distribution of phase delay values ​​of light is determined according to the number of meta-particles, and the supercells (620) can be composed of at least three meta-particles.

[0169] According to one embodiment, light (L) incident through the second surface (612) can be diffracted by passing through a plurality of supercells (620). A plurality of supercells (620) arranged on the first surface (611) can form a wavefront (A) such that an image is formed on the imaging plane (6041) of the image sensor (604) by light (L') passing through the meta-lens (601). For example, light (L) incident perpendicularly on the second surface (612) can pass through a plurality of supercells (620) configured to delay the phase by a constant value, and the light (L') that passes through can form a wavefront (A) on the imaging plane (6041) spaced apart by D1.

[0170] According to one embodiment, a plurality of metaparticles (e.g., a first metaparticle (631)) constituting each of a plurality of supercells (620) can delay the phase of light passing through each of the metaparticles (e.g., the first metaparticle (631)) differently. According to one embodiment, the first metaparticle (631) generates a phase delay having the smallest value in region S3, and the fourth metaparticle (614) generates a phase delay having the largest value in region S3, so that light passing through the first metaparticle (631) can form a part of the wavefront at a distance further from the first surface (631) than the second metaparticle (632) to the fourth metaparticle (634). Light passing through the fourth metaparticle (631) can form a part of the wavefront at a distance closer to the first surface (611) than the first metaparticle (632) to the third metaparticle (634). The first meta-particle (631) to the fourth meta-particle (614) each cause the incident light (L) to pass through by generating a different phase delay, and the wavefront connecting the same phase of the light (L') that passed through can be inclined with respect to the first plane (611).

[0171] According to one embodiment, the supercells (620) have a phase difference (e.g., P in FIG. 9b) more Multiple metaparticles (631–634) can be arranged so that the difference is less than . For example, the number of particles is 3, and the difference in phase delay is constant (e.g., If ) occurs, the difference between the maximum phase value and the minimum phase value is It can be. When each of the metaparticles (631–634) of the supercells (620) is configured at a first height (e.g., h1 in FIG. 7b), the phase difference (e.g., P in FIG. 9b) between them more They can be spaced apart from each other to have different widths (e.g., width (w1) in FIG. 7b) such that they are less than. Multiple metaparticles (631–634) have a phase difference (e.g., P in FIG. 9b) more Multiple meta particles (631–634) can be arranged to have different widths (W) along the first plane so as to be less than

[0172] According to one embodiment, when the first metaparticle (531) delays the incident light (L) by a minimum phase delay value (e.g., Pmin in FIG. 9b), the second metaparticle (531) delays the phase of the incident light (L) by a minimum phase delay value (e.g., Pmin in FIG. 9b) compared to The phase can be delayed by a value as large as that. The first meta-particle (531) is 0 or The incident light (L) can be delayed by a certain amount. For example, when the light (L) incident through the second surface (612) passes through the first metaparticle (531), the passed light (L') can proceed with the same phase as the incident light (L'). The third metaparticle (533) is greater than the phase delay value of the second metaparticle (532) which delayed the incident light (L). The phase can be delayed to have a value as large as the second meta-particle (534) delays the incident light (L) by the second meta-particle (534) The phase can be delayed to have a value as large as that. When the fourth metaparticle (534) delays the incident light (L) by the minimum phase delay value of the first metaparticle (531) (e.g., Pmin in FIG. 9b), the second metaparticle (531) delays the phase of the incident light (L) by the minimum phase delay value (e.g., Pmin in FIG. 9b) It can generate a maximum phase delay as large as (e.g., Pmax in Fig. 9b). For example, the phase difference between the maximum phase delay value (Pmzx) and the minimum phase delay value (Pmin) (e.g., L in Fig. 9b) When this happens, light (L') passing through the meta lens (601) can form a wavefront on the image plane (6041) separated by D1.

[0173] The wavefront described in the present disclosure may refer to a diffraction pattern of light resulting from diffraction. The wavefront described in the present disclosure may refer to a first-order diffraction pattern or a diffraction pattern of high energy levels or a first-order diffraction pattern among the diffraction patterns of light resulting from diffraction.

[0174] Each of the plurality of supercells (620) mentioned in the present disclosure may be configured differently in terms of the diffraction efficiency of incident light and the degree of wavefront formation in which an image is formed on the imaging plane, depending on the phase difference (e.g., P in FIG. 9b) defined as the difference between the minimum phase delay value (e.g., Pmin in FIG. 9b) by one of the metaparticles (611) and the maximum phase delay value (e.g., Pmax in FIG. 9b) by another of the metaparticles.

[0175] FIG. 9a is a diagram showing the phase delay value of each meta-particle according to a comparative example and the wavefront formed due to the phase delay.

[0176] FIG. 9b is a diagram illustrating the phase delay value of each of the meta-particles and the wavefront formed due to the phase delay according to one embodiment of the present disclosure.

[0177] The configurations described with reference to FIG. 9b may be substantially identical to the configurations described with reference to FIG. 1 through 8b. The configurations described with reference to FIG. 9b may be substantially identical to the configurations according to an embodiment of the present disclosure described with reference to FIG. 10a through 14b to the extent that they do not conflict. The embodiments of FIG. 9b may be combined to the extent that they do not conflict with the embodiments of the present disclosure of FIG. 10a through 14b. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 10a through 14b to the extent that they do not conflict. Configurations not described below may be substantially identical to the configurations according to an embodiment of the present disclosure of FIG. 1 through 8b.

[0178] Referring to FIG. 9a, the comparative embodiment can form a wavefront (A1) by a supercell (720a) according to the comparative embodiment in which a plurality of metaparticles (731a to 737a) are arranged. According to the comparative embodiment, among the plurality of metaparticles (731a to 737a), the metaparticle (737a) that causes the maximum phase delay is greater than the metaparticle (731a) that causes the minimum phase delay (Pmin). It can be arranged to have a phase difference as large as that. The supercell (720a) according to the comparative example can be arranged repeatedly to have a period of Ta, which is the sum of the spacing distances between the particles. According to the comparative example, when the values ​​of the phase delays generated by the meta-particles are represented corresponding to each position, the phase difference (P) is A slope of the phase delay value can be formed with respect to the position. According to a comparative embodiment, six metaparticles (731a to 736a) are arranged such that a difference in phase delay values ​​of equal intervals occurs from the metaparticle (731a) that causes the minimum phase delay among the plurality of metaparticles, and the last metaparticle (737a) can be arranged as the first metaparticle (737a) of the repeating supercell (720a) while causing the maximum phase delay (Pmax).

[0179] Referring to FIG. 9a, the first meta-lens (731a) to the sixth methane lens (736a) according to the comparative example each have a difference value of phase delay caused by two adjacent meta-lenses. They can be arranged so as follows. For example, when the first meta-lens (731a) produces a phase delay of 0, the sixth meta-lens (736a) Causing a phase delay of, and at the last meta-lens (737a) Phase delay may occur. The phase difference (Pmax) between the meta particle (737a) that causes maximum phase delay and the first meta lens (731a) that causes minimum phase delay in the metalens (701a) is When this happens, a wavefront (A1) caused by the first-order diffraction pattern may occur.

[0180] Referring to FIG. 9b, a wavefront (A2) can be formed by a supercell (720b) ​​according to one embodiment in which a plurality of meta-particles (731b to 737b) according to one embodiment of the present disclosure are arranged. According to one embodiment, the supercell (720b) ​​can form a wavefront (A2) at a point at a certain distance or more (e.g., far-field) from the meta-lens (701b). For example, when an image sensor (e.g., 404 in FIG. 5) is placed at a point spaced apart by a certain distance or more, the meta-lens (702b) of FIG. 9b can form a wavefront (A2) on the image sensor (e.g., 404 in FIG. 5). According to the present embodiment, among the plurality of meta-particles (731b to 737b), the meta-particle (737b) that causes the maximum phase delay is greater than the meta-particle (731b) that causes the minimum phase delay (Pmin). It can be arranged to have a phase difference as large as that. The supercell (720b) ​​according to the comparative example can be arranged repeatedly to have a period Tb, which is the sum of the spacing distances between the particles. According to an embodiment of the present disclosure, when the values ​​of the phase delays generated by the meta-particles are indicated corresponding to each position, the phase difference (P) is A slope of the phase delay value can be formed with respect to the position. According to one embodiment of the present disclosure, five metaparticles (731b to 735b) are arranged such that a difference in phase delay value of equal interval occurs from the metaparticle (731b) that causes the minimum phase delay among a plurality of metaparticles, and the last metaparticle (736b) can be arranged as the first metaparticle (736b) of the repeating supercell (720b).

[0181] Referring to FIG. 9b, the first meta-lens (731b) to the fifth methane lens (735b) according to one embodiment each have a difference value of phase delay caused by two adjacent meta-lenses. They can be arranged so as follows. For example, when the first meta-lens (731b) produces a phase delay of 0, the fifth meta-lens (736b) Causes a phase delay of and 0 or at the last meta-lens (736a) A phase delay may occur. Through the slope of a graph illustrating the phase delay values ​​of each meta-particle (e.g., the first meta-particle (731b)) according to the position (Tb) illustrated in accordance with one embodiment of the present disclosure, the maximum phase difference When this occurs, it can be confirmed that a linear slope is exhibited and a wavefront (A2) is formed. According to one embodiment, the metalens (701b) is such that the phase difference (Pmax) between the meta particle (737a) that causes the maximum phase delay and the first metalens (731a) that causes the minimum phase delay is When this happens, a wavefront (A1) caused by the first-order diffraction pattern may occur.

[0182] FIG. 10a is a diagram illustrating the phase delay value of each of the meta-particles and the wavefront formed due to the phase delay, according to one embodiment of the present disclosure.

[0183] FIG. 10b is a diagram illustrating the phase delay value of each meta-particle and the wavefront formed due to the phase delay, according to one embodiment of the present disclosure.

[0184] FIG. 10c is a diagram illustrating the phase delay value of each meta-particle and the wavefront formed due to the phase delay according to a comparative example.

[0185] Figure 11 is a graph showing the phase difference and diffraction efficiency of a meta-lens according to meta-particles.

[0186] The configurations described with reference to FIGS. 10a and FIGS. 10b may be substantially identical to the configurations described with reference to FIGS. 1 through 9b. Configurations not described below may be substantially identical to the configurations according to one embodiment of the present disclosure of FIGS. 1 through 9b.

[0187] Referring to FIG. 10a and FIG. 10b, the supercell (820a) of the first meta-lens (801a) and the supercell (820b) of the second meta-lens (801b) can each be spaced apart from each other with a spacing of nine meta-particles (830a, 830b).

[0188] Referring to FIG. 10a, according to one embodiment, the supercell (820a) of the first meta-lens (801a) has a phase difference It may include first meta-particles (830a) arranged at nine spaced intervals apart from each other. For example, the first meta-particles (830a) may form a supercell (820a) such that the width of each particle (e.g., widths (w1–w4) in FIG. 7a) increases along the substrate (810a), and then the last meta-particle is arranged to be the same particle as the first meta-particle. According to one embodiment, the first meta-particles (830a) may be arranged at nine spaced intervals along a first surface of the substrate (e.g., 411 in FIG. 7a) in a second direction (X-axis or Z-axis) perpendicular to a first direction (e.g., -Y in FIG. 7a). According to one embodiment, the supercell (820a) of the first meta-lens (801a) has a phase difference It may include meta-particles (830a) arranged to be such.

[0189] Referring to FIG. 10a, according to one embodiment, the phase difference The supercell (820a) defined as such can form a wavefront (A3) in a region close to the first meta-lens (801a). For example, light passing through the first meta-particles (830a) of the supercell (820a) can form a wavefront (A3) at the point where the first wavefront is formed. According to one embodiment, the phase difference The supercell (820a) defined as such can form a wavefront (A4) in a region far from the first meta-lens (801a) (e.g., the imaging plane (6041) of the image sensor). Referring to the graph in FIG. 10a, the phase difference In the case that it is not the case, it can be confirmed that a wavefront (A4) is formed in a region far from the first meta-lens (801a) (e.g., the imaging plane (6041) of the image sensor). According to the phase delay graph according to the position of the meta-particles (830a) in one embodiment of FIG. 10a, the phase difference The supercell (820a) defined by satisfies the positional phase delay values ​​of the nine metaparticles (830a), which can form a linear gradient.

[0190] Referring to FIG. 10b, according to one embodiment, the supercell (820b) of the second meta-lens (801b) has a phase difference It may include second meta-particles (830b) arranged at nine spaced intervals apart from each other. For example, the second meta-particles (830b) may form a supercell (820b) such that the width of each particle (e.g., widths (w1–w4) in FIG. 7a) increases along the substrate (810b), and the last meta-particle is arranged to be the same particle as the first meta-particle. According to one embodiment, the first meta-particles (830b) may be arranged at nine spaced intervals along the first surface of the substrate (e.g., 411 in FIG. 7a) in a second direction (X-axis or Z-axis) perpendicular to the first direction (e.g., -Y in FIG. 7a). According to one embodiment, the supercell (820b) of the first meta-lens (801b) has a phase difference It may include meta-particles (830b) arranged in such a way.

[0191] Referring to FIG. 10b, according to one embodiment, the phase difference The supercell (820b) defined as such can form a wavefront (A5) in an area close to the second meta-lens (801b), for example, at the point where light passing through the first meta-particles (830b) of the supercell (820b) forms the first wavefront (A5). According to one embodiment, the phase difference The supercell (820b) defined as such can form a wavefront (A5) in a region far from the second meta-lens (801b) (e.g., the imaging plane (6041) of the image sensor). Referring to the graph in FIG. 10b, the phase difference In the case that it is not the case, it can be confirmed that a wavefront (A5) is formed in a region far from the second meta-lens (801b) (e.g., the imaging plane (6041) of the image sensor). According to the phase delay graph according to the position of the meta-particles (830a) in one embodiment of FIG. 10b, the phase difference The supercell (820a) defined by satisfies the positional phase delay values ​​of the nine metaparticles (830a), which can form a linear gradient.

[0192] According to one embodiment, when comparing FIG. 9b with FIG. 10a and FIG. 10b, it can be seen that as the number of particles constituting the supercell increases, the phase values ​​delayed by each particle show a dense distribution. For example, as the distribution of phase delay caused by particles becomes denser, the diffraction pattern can be improved more clearly.

[0193] Referring to FIG. 10c, the supercell (820c) of the meta-lens (801c) according to the comparative embodiment has a phase difference It can be arranged so that... Referring to FIG. 10c, the phase difference It can be confirmed that the supercell (820c) defined as such does not form a wavefront in the region close to the meta-lens (801c) according to the comparative embodiment, for example, at the point where it passes through the third meta-particles (830b). According to the phase delay graph according to the position of the meta-particles (830c) according to the comparative embodiment of FIG. 10c, the phase difference It can be seen that the supercell (820a) defined by does not form a constant linear slope when the phase delay values ​​according to the positions of the nine metaparticles (830a) are compared with the slopes of FIG. 10a and FIG. 10b.

[0194] Referring to FIG. 11, according to a graph comparing the diffraction efficiency according to the phase difference of metaparticles having a repeating particle count of 9 (e.g., the first metaparticles (830a) of FIG. 10a), the phase difference more It can be confirmed that the diffraction efficiency is 80% or higher at less than. According to the graph (900) in Fig. 11, the phase difference Below, diffraction efficiency increases, and It can be observed that it shows a tendency to decrease again from below. For example, according to the graph (900) in FIG. 11, the phase difference of the supercell, defined as the phase difference of the meta-particles of the meta-lens, more It can be seen that diffraction efficiency increases when it is less than . When diffraction efficiency increases, efficient transmission of the image may be possible.

[0195] The plurality of metaparticles of the present disclosure described with reference to FIGS. 10a and 10b may be named first metaparticles (830a) and second metaparticles (830). The supercells of the present disclosure described with reference to FIGS. 10a and 10b may be named the same as first supercell (820a) and second supercell (820c).

[0196] The meta-particles constituting the supercell described in this disclosure may define the period of the supercell as the length during which the first arranged particle and the last arranged particle are repeated. However, it should be noted that this is not limited thereto.

[0197] FIG. 12a is a graph showing the width and phase delay and the width and transmittance of a meta-particle, respectively, according to a comparative example.

[0198] FIG. 12b is a graph showing the width and phase delay and the width and transmittance of a meta-particle, respectively, according to one embodiment of the present disclosure.

[0199] FIG. 13 is a graph showing the resolution according to the frequency of the meta-particles, comparing the metalens according to one embodiment of the present disclosure and the metalens according to a comparative embodiment.

[0200] FIG. 14 is a graph showing the phase delay values ​​of each meta particle according to the position of the metalens, comparing the metalens according to one embodiment of the present disclosure and the metalens according to a comparative embodiment.

[0201] Referring to FIG. 12a, according to the comparative embodiment, the meta particle (1030a) has a phase difference It may be a single metaparticle constituting a supercell arranged to be such. The metaparticle (1030a) according to the comparative example may have a maximum value of the ratio of height (H) to width (W) of 10. The metaparticle (1030a) with an aspect ratio of 10 may be the first particle of the supercell of the metalens (1001a) according to the comparative example. In the metaparticle (1030a) according to the comparative example, as the width (W) increases, the phase delay value of the light passing through each particle increases, and the maximum phase delay value It can be. According to the comparative example, the meta particle (1030a) may have a decrease in transmittance as the width (W) increases.

[0202] Referring to FIG. 12b, according to one embodiment, the meta particle (1030b) has a phase difference It may be a single metaparticle constituting a supercell arranged to be such. In one embodiment, the metaparticle (1030b) may have a maximum value of the ratio of height (H) to width (W) of 5. The metaparticle (1030b) with an aspect ratio of 5 may be the first particle of the supercell of the metalens (1001b) according to one embodiment. In one embodiment, as the width (W) increases, the phase delay value of the light passing through each particle of the metaparticle (1030b) increases, and the maximum phase delay value It can be. According to one embodiment, the meta particle (1030a) can be confirmed to have a transmittance of 80% or more even as the width (W) increases.

[0203] According to one embodiment, the meta particle (1030b) may have a cylindrical shape. The height of the meta particle (1030b) may be determined by Equation 2.

[0204]

[0205] : Particle phase delay value according to meta-lens position

[0206] Wavelength of incident light

[0207] : Effective refractive index of a particle depending on the position of the meta-lens

[0208] H: Height of metaparticle

[0209] According to one embodiment, when the meta particles (1030b) have a refractive index (n) of 2.4 or higher and 2.6 or lower and a height (H) of 500 nm, the width (W) of each of the plurality of meta particles may be 350 nm or lower.

[0210] Referring to FIG. 13, it can be confirmed that the resolution according to the arrangement of meta-particles of the meta-lens (1001b) according to one embodiment of the present disclosure and the meta-lens (1001a) according to a comparative embodiment have substantially similar values. For example, when the maximum resolution according to the diffraction limit is 1, it can be confirmed that the meta-lens (1001b) according to one embodiment and the meta-lens (1001a) according to a comparative embodiment have similar values ​​when the spatial frequency, defined as the repetition period of particles per length, is 0. The meta-lens (1001b) according to one embodiment and the meta-lens (1001a) according to a comparative embodiment may have resolution efficiencies of 87.2% and 82.8%, respectively. For example, the phase difference When the aspect ratio of the particles is lower than that of the meta-lens according to one embodiment, the efficiency due to the transmission dip may be reduced.

[0211] According to one embodiment, a meta-lens having different phase differences can be defined by Equation 3.

[0212]

[0213] Wavelength of incident light

[0214] : Focal length

[0215] r: Position of the particle at the lens radius

[0216] Referring to FIG. 14, according to a graph (1200) showing phase delay values ​​according to the position of meta particles arranged along the radius of the lens according to Equation 3, it can be observed that the meta lens (1001b) according to one embodiment and the meta lens (1001a) according to a comparative embodiment have a tendency for the phase delay to increase and then decrease in substantially the same period. For example, when the meta lens (1001b) according to one embodiment and the meta lens (1001a) according to a comparative embodiment have supercells arranged in the same number of periods, the incident light can be refracted (or diffracted) at the same angle. For example, the meta lens (1001b) according to one embodiment and the meta lens (1001a) according to a comparative embodiment can form similar wavefronts at a certain distance. According to one embodiment, the meta lens (1001b) is configured with a field of view of 120 degrees and a resolution of 45.5 (lp / mm) containing 45.5 lines (line pair, lp) per unit length (mm), and the total thickness may be less than 2mm.

[0217] A supercell defined in this disclosure (e.g., 620 in FIG. 8a) is such that the first particle is arranged and the phase delay is again 0 or It can be defined as a period in which the particle preceding the arrangement of particles becomes the last particle. For example, when the first particle causes a phase delay of 0 and the remainder are arranged so that the same phase accumulates, the difference from the phase delay caused by the last particle can determine the phase difference of the supercell. For example, when particles are arranged so that the same phase difference occurs, and the maximum phase accumulation is In this case, the phase difference of the supercell It can be defined as. For example, particles are arranged so that the same phase difference occurs, and the phase delay of the last particle among the particles arranged with the same cumulative difference is In this case, the phase difference Defined as, and thereafter, 0 or Metaparticles that cause phase delay can be arranged to determine the period of a supercell.

[0218] A camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may include an image sensor (e.g., 404 in FIG. 4) comprising an image plane on which an image is formed.

[0219] A camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may include a meta lens (e.g., 401 in FIG. 6) comprising a first surface (e.g., 511 in FIG. 7a) facing a first direction and facing the image sensor, and a second surface (e.g., 512 in FIG. 7a) opposite to the first surface and into which light is incident, and a plurality of supercells (e.g., 420 in FIG. 6) on the first surface.

[0220] Each of the supercells (e.g., 420a in FIG. 7a) included in the plurality of supercells of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may include a plurality of metaparticles (e.g., 530 in FIG. 7b) spaced apart from each other by a first distance (e.g., T1 in FIG. 7b) along a second direction perpendicular to the first direction so as to diffract light (e.g., L in FIG. 8a) incident on the lens in a certain direction.

[0221] Each of the plurality of meta-particles of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may be formed with a first height (e.g., h1 in FIG. 7b) defined from a first surface.

[0222] The plurality of metaparticles of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure have a phase difference (e.g., P in FIG. 9b) defined as the difference between the maximum phase delay value of light incident on the second surface delayed by one of the plurality of metaparticles (e.g., Pmax in FIG. 9b) and the minimum phase delay value of light incident on the second surface delayed by another of the plurality of metaparticles (e.g., Pmin in FIG. 9b). more Some of the plurality of meta particles may be arranged to have different widths (e.g., W1 in FIG. 7b) in a direction parallel to the second direction so as to be less than

[0223] A camera assembly according to one embodiment of the present disclosure (e.g., 400 of FIG. 4) has the maximum phase difference more When less than, light passing through each supercell (e.g., L' in FIG. 8b) can form a wavefront (e.g., A in FIG. 8b) on the imaging plane of the image sensor.

[0224] The different plurality of metaparticles of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may have a light intensity at the wavefront (e.g., A in FIG. 8b) of the light (L') that has passed through the plurality of metaparticles that is 80% or more of the light (L) incident through the second surface.

[0225] The plurality of metaparticles of one of the plurality of supercells (e.g., 820a in FIG. 10a) of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure may include different metaparticles (e.g., 830a in FIG. 10a) arranged at nine spaced intervals along the first direction.

[0226] The supercell of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure has the phase difference more It may be less than

[0227] Each of the plurality of meta particles of a camera assembly (e.g., 400 of FIG. 4) according to one embodiment of the present disclosure may be configured such that the aspect ratio, which is the height from the first surface of the plurality of meta particles divided by the width of the plurality of meta particles, is 5 or less.

[0228] Each of the plurality of meta-particles (e.g., 1001b in FIG. 12b) of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure is configured to have a refractive index (n) of 2.4 or higher and 2.6 or lower, and when the first height of the plurality of meta-particles is 500 nm, the width (W) of each of the plurality of meta-particles may be 350 nm or lower.

[0229] The plurality of supercells of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure include a first portion (e.g., 4201 in FIG. 6) arranged in a circle at the center of the meta lens and a second portion (e.g., 4202 in FIG. 6) arranged in a plurality of annular shapes along the first surface in a direction perpendicular to the first direction away from the center of the lens, and the second portion may be arranged concentrically to surround the first portion along the first surface of the lens so as to diffract the incident light regardless of the wavelength of the light and cause it to reach the image sensor.

[0230] According to one embodiment of the present disclosure, the plurality of meta-particles (e.g., 530 in FIG. 7b) of a camera assembly (e.g., 400 in FIG. 4) are formed as cylinders with a bottom surface (e.g., 5311 in FIG. 7b) disposed on the first surface so as to allow light to reach the image sensor regardless of the polarization of the light, and the ratio of the diameter to the height of the cylinder of one of the plurality of meta-particles (e.g., 1030b in FIG. 12b) may be configured to have a maximum value of 5.

[0231] The number of the plurality of meta-particles in another of the plurality of supercells of a camera assembly (e.g., 400 of FIG. 4) according to one embodiment of the present disclosure may be three or more.

[0232] The meta lens of a camera assembly (e.g., 400 in FIG. 4) according to one embodiment of the present disclosure includes a substrate (e.g., 410 in FIG. 6) formed in a circular shape and comprising the first surface and the second surface, and the plurality of meta particles of the plurality of supercells may be formed integrally with the substrate on the first surface.

[0233] The first surface and the second surface of a camera assembly (e.g., 400 of FIG. 4) according to one embodiment of the present disclosure may be composed of a plane parallel to a direction perpendicular to the first direction.

[0234] A wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include a frame (e.g., 202b of FIG. 5) having at least one opening (e.g., 3111 of FIG. 5) formed therein.

[0235] A wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include at least one camera assembly (e.g., 400 of FIG. 5) disposed in the opening.

[0236] The camera assembly of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include a meta-lens (e.g., 401 of FIG. 7a) comprising a substrate (e.g., 410 of FIG. 7a) comprising a first surface (e.g., 411 of FIG. 7a) facing a first direction.

[0237] The camera assembly of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include a case (e.g., 402 of FIG. 5) in which the meta lens is disposed on one side.

[0238] The camera assembly of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include an image sensor (e.g., 404 of FIG. 5) that recognizes light transmitted through the lens on the other side of the case.

[0239] The camera assembly of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may include a plurality of supercells (e.g., 420 of FIG. 6) disposed on the substrate.

[0240] Each of the supercells of a wearable electronic device (e.g., 200 in FIG. 5) according to one embodiment of the present disclosure may include a plurality of meta-particles (e.g., 430a in FIG. 7a) spaced apart from each other along a second direction perpendicular to the first direction at a constant interval to delay the phase of the light and diffract the light incident through the lens in a constant direction.

[0241] Each of the supercells of a wearable electronic device (e.g., 200 in FIG. 5) according to one embodiment of the present disclosure has a phase difference (e.g., P in FIG. 9b) defined as the difference between the minimum phase delay value of the light delayed by one of the plurality of metaparticles (e.g., Pmin in FIG. 9b) and the maximum phase delay value of the light delayed by another of the plurality of metaparticles (e.g., Pmax in FIG. 9b). It may be less than

[0242] The maximum phase difference of the different plurality of metaparticles of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure is more It may be less than

[0243] Each of the plurality of meta-particles of a wearable electronic device (e.g., 200 in FIG. 5) according to one embodiment of the present disclosure may be configured such that the aspect ratio, which is the height (e.g., h1 in FIG. 7b) from the first surface of the plurality of meta-particles divided by the width of the plurality of meta-particles, is 5 or less.

[0244] The transmittance of light passing through each of the plurality of meta-particles of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may be 80% or more.

[0245] According to one embodiment of the present disclosure, one of the plurality of supercells of a wearable electronic device (e.g., 200 of FIG. 5) comprises different metaparticles arranged at nine spaced intervals along a second direction perpendicular to the first direction, and the plurality of metaparticles have the maximum phase difference more It may be less than

[0246] The plurality of supercells of a wearable electronic device (e.g., 200 in FIG. 5) according to one embodiment of the present disclosure include a first portion (e.g., 4201 in FIG. 6) arranged in a circle at the center of the lens and a second portion (e.g., 4202 in FIG. 6) arranged in a plurality of annular shapes along the first surface in a third direction perpendicular to the first direction, away from the first portion, and the second portion may be arranged concentrically to surround the first portion along the first surface of the lens so as to diffract the incident light to reach the image sensor.

[0247] According to one embodiment of the present disclosure, the plurality of metaparticles of a wearable electronic device (e.g., 200 of FIG. 5) are formed as cylinders with a bottom surface disposed on the first surface so as to allow light to reach the image sensor regardless of the polarization of the light, and the ratio of the diameter to the height of one of the plurality of metaparticles may be configured to a maximum value of 5.

[0248] The number of the plurality of meta-particles in another of the plurality of supercells of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may be three or more.

[0249] The plurality of meta-particles of the plurality of supercells of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure may be formed integrally with the lens in the first surface.

[0250] The meta-lens of a wearable electronic device (e.g., 200 of FIG. 5) according to one embodiment of the present disclosure is formed in a circular shape, and the first surface may be configured as a plane parallel to a direction perpendicular to the first direction.

Claims

1. In the camera assembly (400), An image sensor (404) including an image plane on which an image is formed; and A meta lens (401; 601; 701b; 801a; 801b; 1001b) comprising a first surface (411; 511; 611) facing a first direction and a second surface (412; 512; 612) opposite to the first surface, and comprising a plurality of supercells (420a, 420b, 420c; 520; 620; 720b; 820a; 820b) on the first surface, and Each of the supercells (420a, 420b, 420c; 520; 620; 720b; 820a; 830b) included in the plurality of supercells comprises a plurality of metaparticles (430a, 430b, 430c; 530; 630; 730b; 830a; 830b) spaced apart from each other by a first separation distance (T1) along the first plane to diffract light (L) incident on the meta lens in a certain direction, and Each of the above plurality of meta particles is formed with a first height (h1) defined from a first plane, and A phase difference (P) defined as the difference between the maximum phase delay value (Pmax) of the light incident on the meta-lens delayed by one of the plurality of meta-particles and the minimum phase delay value (Pmin) of the light incident on the meta-lens delayed by another of the plurality of meta-particles more Some of the plurality of meta particles are arranged to have different widths (W) along the first plane so as to be less than, and The above maximum phase difference more A camera assembly in which light (L') passing through each supercell forms wavefronts (A;A2;A3;A4;A5) on the imaging plane of the image sensor when less than 2. In Paragraph 1, A camera assembly in which the intensity of light at the wavefronts (A; A2; A3; A4; A5) of the light (L') that has passed through the plurality of meta particles is 80% or more of the intensity of the light (L) incident on the meta lens.

3. In Paragraph 1, The plurality of metaparticles of one of the plurality of supercells (820a; 820b) comprises different metaparticles (830a; 830b) arranged at nine spaced intervals along the first direction, and The above supercell has the above phase difference more Camera assembly less than 4. In Paragraph 1, A camera assembly in which each of the plurality of meta particles has an aspect ratio of 5 or less, wherein the height from the first surface of the plurality of meta particles is divided by the width of the plurality of meta particles.

5. In Paragraph 4, A camera assembly in which each of the plurality of meta particles (1030b) has a refractive index (n) of 2.4 or higher and 2.6 or lower, and when the first height of the plurality of meta particles is 500 nm, the width (W) of each of the plurality of meta particles is 350 nm or lower.

6. In Paragraph 1, The plurality of supercells include a first portion (4201) arranged in a circle at the center of the meta-lens and a second portion (4202) arranged in a plurality of annular shapes along the first plane in a direction perpendicular to the first direction and away from the center of the lens. The second part is a camera assembly arranged in concentric circles to surround the first part along the first surface of the lens so as to diffract the incident light regardless of the wavelength of the light and allow it to reach the image sensor.

7. In Paragraph 1, The plurality of meta particles (530) are formed as cylinders with a bottom surface (5311) disposed on the first surface so as to allow light to reach the image sensor regardless of the polarization of the light, and A camera assembly in which the ratio of the diameter to the height of the cylinder of one of the plurality of meta-particles (1030b) is 5 is the maximum value.

8. In Paragraph 1, A camera assembly in which the number of meta-particles in another of the plurality of supercells is three or more.

9. In Paragraph 1, The above meta-lens includes a substrate (410; 610) formed in a circular shape, comprising the first surface and the second surface, and The plurality of meta particles of the plurality of supercells are a camera assembly formed integrally with the substrate on the first plane.

10. In Paragraph 1, A camera assembly in which the first surface and the second surface are composed of planes parallel to a direction perpendicular to the first direction.

11. In a wearable electronic device (200), A frame (202b) having at least one opening (3111) formed therein; and It includes at least one camera assembly (400) disposed in the above opening, and The above camera assembly is, A metal lens (401; 601; 701b; 801a; 801b; 1001b) comprising a substrate (410; 510; 610; 710b; 810a; 810b) comprising a first surface (411; 511; 611) facing a first direction A case (402) in which the above-mentioned meta lens is placed on one side; An image sensor (404; 604) that recognizes light transmitted through the lens on the other side of the above case; and It includes a plurality of supercells (420a, 420b, 420c; 520; 620; 720b; 820a; 820b) disposed in the lens, and Each of the above supercells is, Each includes a plurality of meta-particles (430a, 430b, 430c; 530; 630; 730b; 830a; 830b) spaced apart from each other along the first plane at a constant interval to delay the phase of the light and diffract the light incident through the lens in a constant direction, The phase difference (P), defined as the difference between the minimum phase delay value (Pmin) of the light delayed by one of the plurality of metaparticles and the maximum phase delay value (Pmax) of the light delayed by another of the plurality of metaparticles, is Wearable electronic device less than 12. In Paragraph 11, The maximum phase difference of the aforementioned multiple different meta-particles more Wearable electronic device less than 13. In Paragraph 11, A wearable electronic device in which each of the plurality of meta particles has an aspect ratio of 5 or less, wherein the height (h1) from the first surface of the plurality of meta particles is divided by the width of the plurality of meta particles.

14. In Paragraph 11, One of the plurality of supercells comprises a plurality of metaparticles arranged at nine spaced intervals along a second direction perpendicular to the first direction, and The plurality of meta particles mentioned above have the maximum phase difference more Wearable electronic device less than 15. In Paragraph 11, The plurality of supercells include a first portion (4201) arranged in a circle at the center of the lens and a second portion (4202) arranged in a plurality of annular shapes along the first surface, extending away from the first portion. A wearable electronic device in which the second portion is arranged concentrically to surround the first portion along the first surface of the lens so as to diffract the incident light and allow it to reach the image sensor.

Images