Camera module including refractive member and electronic device including refractive member

Abstract

A camera module is provided. The camera module includes: a refractive member configured to reflect or refract at least a portion of light; and an image sensor configured to detect at least a portion of the light reflected or refracted by the refracting member. The refractive member includes an active area configured to provide a path for light and a dummy area disposed on at least a portion of an edge of the active area. The dummy region is configured by causing a variable in an equation of a bidirectional scattering distribution function to satisfy a condition 0.05 lt; blt; 0, 0.5,-6.0 lt; slt; -0.05 and 0.02 lt,-0.05 and 0.02 lt; llt; 1.9, where B-B0 represents the angular difference of scattered light in the sine direction, g represents the average value of the angle of scattered light in the cosine direction and the angle of incident light in the cosine direction, b represents the BSDF value at the reference angle, S represents the angle of BSDF, l represents the angle at which reflected light begins to change with respect to incident light, and n represents the angle at which reflected light begins to change with respect to incident light. M represents exponential power of cosine, and n represents exponential power of angle. # imgabs0 #

Description

Technical Field

[0001] The present disclosure relates to a camera module including a refractive member and an electronic device including a refractive member. Background Art

[0002] Multiple functions can be integrated into a single portable electronic device. For example, an electronic device can implement not only telephone and text functions, but also entertainment functions (such as playing games), multimedia functions (such as playing music and videos), communication and security functions for mobile banking, and scheduling and electronic wallet functions. Such an electronic device has become compact enough for a user to carry in a convenient manner.

[0003] An electronic device can be equipped with a compact and lightweight camera module. A user can conveniently utilize various functions of the electronic device having the camera module, such as taking pictures, video recording, video calling, augmented reality (AR), etc., while carrying the electronic device.

[0004] An electronic device can obtain a wide-angle image by capturing a wide range of scenes around the electronic device using a wide-angle camera, or obtain a telephoto image by capturing a scene corresponding to a position relatively far from the electronic device using a telephoto camera.

[0005] The above information is provided as background art to help understand the present disclosure. No assertion or judgment is made as to whether any of the above descriptions can be applicable as prior art related to the present disclosure. Summary of the Invention

[0006] Technical Solution

[0007] According to an embodiment of the present disclosure, a camera module may include: a refractive member configured to reflect or refract at least a part of light; and an image sensor configured to detect at least a part of the light reflected or refracted by the refractive member. The refractive member may include an effective region configured to provide a path of light and a dummy region provided at least in part at an edge of the effective region. The dummy region is configured to scatter at least a part of the light incident on the dummy region by satisfying the following equations 1, 2, 3, and 4 of the bidirectional scattering distribution function. [Equation 1] B - B0 may represent the angular difference of the scattered light in the sine direction. g may represent the average of the angles of the scattered light in the cosine direction and the angle of the incident light in the cosine direction. b may represent the BSDF value at a reference angle, S may represent the angle of the BSDF. l may represent the angle at which the reflected light starts to change with respect to the incident light. m may represent the cosine power. n may represent the angle power. [Equation 2] 0.05 < b < 0.5. [Equation 3] -6.0 < S < -0.05. [Equation 4] 0.02 < L < 1.9.

[0008] According to an embodiment of the present disclosure, an electronic device may include a housing and a camera module, at least a part of the camera module being disposed in the housing. The camera module may include an optical member including at least one lens, a refraction member configured to reflect or refract at least a part of light, and an image sensor configured to detect at least a part of the light reflected or refracted by the refraction member. The refraction member may include an effective area configured to provide a path of light and a dummy area disposed at least in part at an edge of the effective area. The dummy area is configured to scatter at least a part of the light incident on the dummy area by satisfying the following Equation 1, Equation 2, Equation 3, and Equation 4 of the bidirectional scattering distribution function. [Equation 1] B-B0 may represent an angular difference of scattered light in a sine direction. g may represent an average value of an angle of scattered light in a cosine direction and an angle of incident light in a cosine direction. b may represent a BSDF value at a reference angle, S may represent an angle of the BSDF. l may represent an angle at which reflected light starts to change with respect to incident light. m may represent a cosine power. n may represent an angular power. [Equation 2] 0.05 < b < 0.5. [Equation 3] -6.0 < S < -0.05. [Equation 4] 0.02 < l < 1.9.

[0009] According to an embodiment of the present disclosure, a camera module may include an optical member including at least one lens, a refraction member configured to reflect or refract at least a part of light, and an image sensor configured to detect at least a part of the light reflected or refracted by the refraction member and located behind the refraction member. The refraction member may include an effective area and a dummy area, the effective area including an incident surface, a reflection surface, and an exit surface, the dummy area being disposed at least in part at an edge of the effective area. A surface reflectance of the dummy area may be 2.0%% or less, and a surface roughness of the dummy area may satisfy 1.0 μm or more, such that the dummy area is configured to scatter at least a part of the light incident on the dummy area. In an embodiment, a surface reflectance of the effective area may exceed 2.0%, and a surface roughness of the effective area may be less than 1.0 μm. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The above and other aspects, features, and advantages of the present disclosure will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which:

[0011] Figure 1 is a block diagram showing an electronic device in a network environment according to various embodiments of the present disclosure;

[0012] Figure 2 is a front perspective view showing an electronic device according to an embodiment of the present disclosure;

[0013] Figure 3 is a rear perspective view showing an electronic device according to an embodiment of the present disclosure;

[0014] Figure 4 is an exploded perspective view showing an electronic device according to an embodiment of the present disclosure;

[0015] Figure 5 is a rear view showing an electronic device according to an embodiment of the present disclosure;

[0016] Figure 6 It is along Figure 5 A cross-sectional view taken along line AA';

[0017] Figure 7 is an exemplary view showing an optical path of a camera module according to an embodiment of the present disclosure;

[0018] Figure 8a is a perspective view showing a refractive member according to an embodiment of the present disclosure;

[0019] Figure 8b is a perspective view showing a refractive member according to an embodiment of the present disclosure;

[0020] Fig. 9 is a side view showing a refractive member viewed from another direction according to an embodiment of the present disclosure; and

[0021] Figures 10a to 10d are magnified views of optical members and captured images according to an embodiment of the present disclosure.

[0022] Fig.11 is a graph showing the surface reflectivity of an optical member according to an embodiment of the present disclosure.

[0023] Fig.12 is a perspective view illustrating a refraction member according to an embodiment of the present disclosure.

[0024] Throughout the drawings, similar reference numerals may be assigned to similar components, configurations and / or structures. DETAILED DESCRIPTION

[0025] A folded optical camera can be used in a small electronic device with multiple camera modules to extend or expand the focal length. For example, in a folded camera, the direction of the lens arrangement can be set regardless of the direction in which the external light is incident on an optical component such as a prism, so that the focal length can be easily extended. As the design freedom of the lens arrangement direction in the folded camera increases, a reduced telephoto camera can be realized. The telephoto camera can be combined with a wide-angle camera and installed in an electronic device. However, in order to maintain the quality of the image, internal reflections should be mitigated (if they cannot be avoided). For example, in a folded optical camera, glare may occur due to light reflected from a refractive component (e.g., a prism).

[0026] According to embodiments of the present disclosure, a lens assembly and / or a camera module capable of easily implementing a telephoto function in a small electronic device may be provided.

[0027] According to an embodiment of the present disclosure, a camera module capable of reducing glare in a folded optical camera may be provided.

[0028] The present disclosure is not limited to the foregoing embodiments, but various modifications or changes may be made thereto without departing from the spirit and scope of the present disclosure.

[0029] Figure 1 is a block diagram illustrating electronic devices in a network environment according to various embodiments of the present disclosure.

[0030] Reference Figure 1 , the electronic device 101 in the network environment 100 may communicate with the electronic device 102 via the first network 198 (e.g., a short-range wireless communication network), or communicate with the electronic device 104 or the server 108 via the second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, a memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connection terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a user identification module (SIM) 196, or an antenna module 197. In some embodiments, at least one of the above components (e.g., the connection terminal 178) may be omitted from the electronic device 101, or one or more other components may be added to the electronic device 101. According to an embodiment, some of the above-mentioned components (eg, the sensor module 176, the camera module 180, or the antenna module 197) may be integrated into a single integrated component (eg, the display module 160).

[0031] The processor 120 may run, for example, software (e.g., program 140) to control at least one other component (e.g., hardware component or software component) of the electronic device 101 connected to the processor 120, and may perform various data processing or calculations. According to one embodiment, as at least part of the data processing or calculation, the processor 120 may store a command or data received from another component (e.g., sensor module 176 or communication module 190) in the volatile memory 132, process the command or data stored in the volatile memory 132, and store the resultant data in the non-volatile memory 134. According to an embodiment, the processor 120 may include a main processor 121 (e.g., a central processing unit (CPU) or an application processor (AP)) or an auxiliary processor 123 (e.g., a graphics processing unit (GPU), a neural processing unit (NPU), an image signal processor (ISP), a sensor hub processor, or a communication processor (CP)) that is operationally independent or combined with the main processor 121. For example, when the electronic device 101 includes a main processor 121 and an auxiliary processor 123, the auxiliary processor 123 may be configured to use less power than the main processor 121 or to be dedicated to a specified function. The auxiliary processor 123 may be implemented separately from the main processor 121 or as part of the main processor 121.

[0032] When the main processor 121 is in an inactive (e.g., sleep) state, the auxiliary processor 123 (rather than the main processor 121) may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190), or when the main processor 121 is in an active state (e.g., running an application), the auxiliary processor 123 may control at least some of the functions or states related to at least one component among the components of the electronic device 101 (e.g., the display module 160, the sensor module 176, or the communication module 190) together with the main processor 121. According to an embodiment, the auxiliary processor 123 (e.g., an image signal processor or a communication processor) may be implemented as part of another component (e.g., a camera module 180 or a communication module 190) that is functionally related to the auxiliary processor 123. According to an embodiment, the auxiliary processor 123 (e.g., a neural processing unit) may include a hardware structure dedicated to artificial intelligence model processing. The artificial intelligence model may be generated by machine learning. For example, such learning may be performed by the electronic device 101 where the artificial intelligence is executed or via a separate server (e.g., server 108). The learning algorithm may include, but is not limited to, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, for example. The artificial intelligence model may include multiple artificial neural network layers. The artificial neural network may be a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), or a deep Q network or a combination of two or more thereof, but is not limited thereto. Additionally or alternatively, the artificial intelligence model may include a software structure in addition to a hardware structure.

[0033] The memory 130 may store various data used by at least one component of the electronic device 101 (e.g., the processor 120 or the sensor module 176). The various data may include, for example, software (e.g., the program 140) and input data or output data for commands related thereto. The memory 130 may include a volatile memory 132 or a nonvolatile memory 134.

[0034] The program 140 may be stored as software in the memory 130 , and may include, for example, an operating system (OS) 142 , middleware 144 , or applications 146 .

[0035] The input module 150 may receive commands or data to be used by other components (e.g., the processor 120) of the electronic device 101 from outside (e.g., a user) of the electronic device 101. The input module 150 may include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus).

[0036] The sound output module 155 can output sound signals to the outside of the electronic device 101. The sound output module 155 may include, for example, a speaker or a receiver. The speaker can be used for general purposes such as playing multimedia or playing records. The receiver can be used to receive incoming calls. Depending on the embodiment, the receiver can be implemented as a separate part from the speaker, or as part of the speaker.

[0037] The display module 160 may visually provide information to the outside of the electronic device 101 (e.g., a user). The display 160 may include, for example, a display, a holographic device, or a projector, and a control circuit for controlling a corresponding one of the display, the holographic device, and the projector. According to an embodiment, the display 160 may include a touch sensor configured to detect a touch or a pressure sensor configured to measure the strength of a force generated by a touch.

[0038] The audio module 170 may convert sound into an electrical signal, or vice versa. According to an embodiment, the audio module 170 may obtain sound via the input module 150, or output sound via the sound output module 155 or an earphone of an external electronic device (e.g., electronic device 102) directly (e.g., wired) or wirelessly connected to the electronic device 101.

[0039] The sensor module 176 may detect an operating state (e.g., power or temperature) of the electronic device 101 or an environmental state (e.g., a state of a user) outside the electronic device 101, and then generate an electrical signal or data value corresponding to the detected state. According to an embodiment, the sensor module 176 may include, for example, a gesture sensor, a gyro sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor.

[0040] The interface 177 may support one or more specific protocols to be used to connect the electronic device 101 directly (e.g., wired) or wirelessly to an external electronic device (e.g., the electronic device 102). According to an embodiment, the interface 177 may include, for example, a high-definition multimedia interface (HDMI), a universal serial bus (USB) interface, a secure digital (SD) card interface, or an audio interface.

[0041] The connection end 178 may include a connector, wherein the electronic device 101 can be physically connected to an external electronic device (e.g., the electronic device 102) via the connector. According to an embodiment, the connection end 178 may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).

[0042] The haptic module 179 may convert the electrical signal into mechanical stimulation (eg, vibration or motion) or electrical stimulation that can be recognized by the user via his sense of touch or kinesthetic sense. According to an embodiment, the haptic module 179 may include, for example, a motor, a piezoelectric element, or an electrical stimulator.

[0043] The camera module 180 may capture still images or moving images. According to an embodiment, the camera module 180 may include one or more lenses, an image sensor, an image signal processor, or a flash.

[0044] The power management module 188 may manage power supply to the electronic device 101. According to an embodiment, the power management module 188 may be implemented as, for example, at least a part of a power management integrated circuit (PMIC).

[0045] The battery 189 may power at least one component of the electronic device 101. According to an embodiment, the battery 189 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.

[0046] The communication module 190 may support establishing a direct (e.g., wired) communication channel or a wireless communication channel between the electronic device 101 and an external electronic device (e.g., electronic device 102, electronic device 104, or server 108), and perform communication via the established communication channel. The communication module 190 may include one or more communication processors capable of operating independently from the processor 120 (e.g., an application processor (AP)) and supporting direct (e.g., wired) communication or wireless communication. According to an embodiment, the communication module 190 may include a wireless communication module 192 (e.g., a cellular communication module, a short-range wireless communication module, or a global navigation satellite system (GNSS) communication module) or a wired communication module 194 (e.g., a local area network (LAN) communication module or a power line communication (PLC) module). A corresponding one of these communication modules can communicate with an external electronic device via a first network 198 (e.g., a short-range communication network such as Bluetooth, Wireless Fidelity (Wi-Fi) Direct, or Infrared Data Association (IrDA)) or a second network 199 (e.g., a long-range communication network such as a traditional cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a local area network (LAN) or a wide area network (WAN))). These various types of communication modules can be implemented as a single component (e.g., a single chip), or these various types of communication modules can be implemented as multiple components separated from each other (e.g., multiple chips). The wireless communication module 192 can identify or authenticate the electronic device 101 in a communication network (such as the first network 198 or the second network 199) using user information (e.g., an International Mobile Subscriber Identity (IMSI)) stored in the user identification module 196.

[0047] The wireless communication module 192 can support 5G networks after 4G networks and next-generation communication technologies (e.g., new radio (NR) access technology). NR access technology can support enhanced mobile broadband (eMBB), massive machine type communication (mMTC), or ultra-reliable low-latency communication (URLLC). The wireless communication module 192 can support high-frequency bands (e.g., millimeter wave bands) to achieve, for example, high data transmission rates. The wireless communication module 192 can support various technologies for ensuring performance on high-frequency bands, such as, for example, beamforming, massive multiple-input multiple-output (massive MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, or massive antennas. The wireless communication module 192 can support various requirements specified in the electronic device 101, an external electronic device (e.g., electronic device 104), or a network system (e.g., a second network 199). According to an embodiment, the wireless communication module 192 may support a peak data rate for implementing eMBB (e.g., 20 Gbps or greater), loss coverage for implementing mMTC (e.g., 164 dB or less), or U-plane delay for implementing URLLC (e.g., 0.5 ms or less for each of the downlink (DL) and uplink (UL), or 1 ms or less round trip).

[0048] The antenna module 197 may send a signal or power to the outside (e.g., an external electronic device) or receive a signal or power from the outside (e.g., an external electronic device). According to an embodiment, the antenna module may include an antenna including a radiator formed by a conductor or a conductive pattern formed on a substrate (e.g., a printed circuit board (PCB)). According to an embodiment, the antenna module 197 may include a plurality of antennas (e.g., an antenna array). In this case, at least one antenna suitable for a communication scheme used in a communication network (such as the first network 198 or the second network 199) may be selected from the plurality of antennas by, for example, the communication module 190. A signal or power may then be sent or received between the communication module 190 and the external electronic device via the selected at least one antenna. According to an embodiment, other subdivisions (e.g., a radio frequency integrated circuit (RFIC)) other than the radiator may be further formed as a part of the antenna module 197.

[0049] According to an embodiment, the antenna module 197 may form a millimeter wave antenna module. According to an embodiment, the millimeter wave antenna module may include a printed circuit board, a radio frequency integrated circuit (RFIC), and a plurality of antennas (e.g., array antennas), wherein the RFIC is disposed on a first surface (e.g., bottom surface) of the printed circuit board, or adjacent to the first surface and capable of supporting a specified high frequency band (e.g., millimeter wave band), and the plurality of antennas are disposed on a second surface (e.g., top surface or side surface) of the printed circuit board, or adjacent to the second surface and capable of transmitting or receiving signals of the specified high frequency band.

[0050] At least some of the above components may be connected to each other via an inter-peripheral communication scheme (e.g., a bus, a general purpose input output (GPIO), a serial peripheral interface (SPI), or a mobile industry processor interface (MIPI)) and communicatively transmit signals (e.g., commands or data) therebetween.

[0051] According to an embodiment, a command or data may be sent or received between the electronic device 101 and the external electronic device 104 via the server 108 connected to the second network 199. The external electronic device 102 or 104 may each be a device of the same or different type as the electronic device 101. According to an embodiment, all or some operations to be run in the electronic device 101 may be run in one or more of the external electronic device 102, the external electronic device 104, or the server 108. For example, if the electronic device 101 should automatically perform a function or service or should perform a function or service in response to a request from a user or another device, the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service instead of running the function or service, or the electronic device 101 may request the one or more external electronic devices to perform at least part of the function or service in addition to running the function or service. The one or more external electronic devices that receive the request may perform the requested at least part of the function or service, or perform another function or another service related to the request, and transmit the result of the execution to the electronic device 101. The electronic device 101 may provide the result as at least a partial reply to the request when the result is further processed or when the result is not further processed. To this end, cloud computing technology, distributed computing technology, mobile edge computing (MEC) technology or client-server computing technology, for example, may be used. The electronic device 101 may use, for example, distributed computing or mobile edge computing to provide ultra-low latency services. In 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 an embodiment, the external electronic device 104 or the server 108 may be included in the second network 199. The electronic device 101 may be applied to intelligent services (e.g., smart homes, smart cities, smart cars or health care) based on 5G communication technology or IoT-related technologies.

[0052] The electronic device according to various embodiments of the present disclosure may be one of various types of electronic devices. The electronic device may include, for example, a portable communication device (e.g., a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a household appliance. According to an embodiment of the present disclosure, the electronic device is not limited to those electronic devices described above.

[0053] It should be understood that the various embodiments of the present disclosure and the terms used therein are not intended to limit the technical features set forth herein to specific embodiments, but include various changes, equivalent forms or alternative forms for corresponding embodiments. For the description of the accompanying drawings, similar reference numerals may be used to refer to similar or related elements. It will be understood that the nouns in the singular form corresponding to the term may include one or more things unless the relevant context clearly indicates otherwise. As used herein, each of the phrases such as "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C" and "at least one of A, B or C" may include all possible combinations of items listed together with the corresponding one of the multiple phrases. As used herein, terms such as "1st" and "2nd" or "first" and "second" may be used to simply distinguish the corresponding component from another component, and do not limit the component in other aspects (e.g., importance or order). It will be understood that if an element (e.g., a first element) is referred to as being “combined with another element (e.g., the second element)”, “combined to another element (e.g., the second element)”, “connected with another element (e.g., the second element)”, or “connected to another element (e.g., the second element)” when the terms “operably” or “communicatively” are used or when the terms “operably” or “communicatively” are not used, it means that the element may be directly (e.g., wired) connected to the other element, wirelessly connected to the other element, or connected to the other element via a third element.

[0054] As used herein, the term "module" may include units implemented in hardware, software, or firmware, and may be used interchangeably with other terms (e.g., "logic," "logic block," "portion," or "circuit"). A module may be a single integrated component adapted to perform one or more functions or a minimum unit or portion of the single integrated component. For example, according to an embodiment, a module may be implemented in the form of an application specific integrated circuit (ASIC).

[0055] According to various embodiments, each component (e.g., module or program) in the above-mentioned components may include a single entity or multiple entities. Some entities in the multiple entities may be separately arranged in different components. According to various embodiments, one or more components in the above-mentioned components may be omitted, or one or more other components may be added. Alternatively or additionally, multiple components (e.g., module or program) may be integrated into a single component. In this case, according to various embodiments, the integrated component may still perform the one or more functions of each component in the multiple components in the same or similar manner as the corresponding one component in the multiple components before integration. According to various embodiments, the operations performed by a module, program or another component may be performed sequentially, in parallel, repeatedly or in a heuristic manner, or one or more operations in the operations may be run or omitted in different orders, or one or more other operations may be added.

[0056] Figure 2 is a front perspective view showing an electronic device according to an embodiment of the present disclosure. Figure 3 200 is a rear perspective view showing an electronic device according to an embodiment of the present disclosure. The electronic device 200 includes camera modules 205, 206. The camera modules 205, 206 are respectively disposed near the front and rear surfaces of the electronic device 200. The camera module 205 may be considered a "selfie camera".

[0057] Reference Figure 2 and Figure 3 According to an embodiment, the electronic device 200 may include a housing 210 having a front surface 210A, a rear surface 210B, and a side surface 210C surrounding a space between the front surface 210A and the rear surface 210B. The housing 210 may represent a Figure 2 The structure of the front surface 210A, the rear surface 210B and the part of the side surface 210C. For example, the housing 210 may include a front plate 202 and a rear plate 211. At least a portion of the front surface 210A may have a substantially transparent front plate 202 (e.g., a glass plate or a polymer plate including various coatings). The rear surface 210B may be formed by the rear plate 211. The rear plate 211 may be formed by, for example, glass, ceramic, polymer, metal (e.g., titanium (Ti), stainless steel (STS), aluminum (Al) or magnesium (Mg)) or a combination of at least two thereof. The side surface 210C may be formed by a side frame structure (or "side member") 218, which is connected to the front plate 202 and the rear plate 211 and includes metal and / or polymer. The rear plate 211 and the side frame plate 218 may be formed integrally together and include the same material (e.g., glass, metal (such as aluminum) or ceramic). According to an embodiment, the front surface 210A and / or the front plate 202 may be interpreted as a part of the display 220 .

[0058] According to an embodiment, the electronic device 200 may include a display 220, audio modules 203, 207, and 214 (eg, Figure 1 audio module 170), sensor module (e.g., Figure 1 sensor module 176), camera modules 205 and 206 (e.g., Figure 1 camera module 180), key input device 217 (eg, Figure 1 input module 150) and connector holes 208 and 209 (e.g., Figure 1 According to an embodiment, the electronic device 200 may not include at least one of the components (e.g., the connector hole 209), or other components may be added. According to an embodiment, the display 220 may be visually exposed through, for example, a majority of the front plate 202.

[0059] According to an embodiment, the surface of the housing 210 (or the front plate 202) may include a screen display area formed as the display 220 is visually exposed. For example, the screen display area may include the front surface 210A.

[0060] According to an embodiment, the electronic device 200 may include a recess or an opening formed in a portion of the screen display area (e.g., the front surface 210A) of the display 220, and may include at least one or more of the audio module 214, the sensor module (not shown), the light emitting device (not shown), and the camera module 205 aligned with the recess or the opening. According to an embodiment (not shown), on the rear surface of the screen display area of ​​the display 220, at least one or more of the audio module 214, the sensor module (not shown), the camera module 205, the fingerprint sensor (not shown), and the light emitting device (not shown) may be included.

[0061] According to an embodiment, the display 220 may be coupled to or disposed adjacent to a touch detection circuit, a pressure sensor capable of measuring the intensity (pressure) of a touch, and / or a digitizer for detecting a magnetic field type stylus.

[0062] According to an embodiment, the audio modules 203, 207, and 214 may include, for example, a microphone hole 203 and speaker holes 207 and 214. The microphone hole 203 may have a microphone inside to obtain external sound. According to an embodiment, there may be multiple microphones to be able to detect the direction of the sound. The speaker holes 207 and 214 may include an external speaker hole 207 and a phone receiver hole 214. According to an embodiment, the speaker holes 207 and 214 and the microphone hole 203 may be implemented as a single hole, or a speaker (e.g., a piezoelectric speaker) may be included without the speaker holes 207 and 214.

[0063] According to an embodiment, the sensor module (not shown) may generate an electrical signal or data value corresponding to an internal operating state or an external environmental state of the electronic device 200. The sensor module (not shown) may include, for example, a first sensor module (not shown) (e.g., a proximity sensor) and / or a second sensor module (not shown) (e.g., a fingerprint sensor) disposed on the front surface 210A of the housing 210. The sensor module (not shown) may include a third sensor module (not shown) (e.g., an HRM sensor) and / or a fourth sensor module (not shown) (e.g., a fingerprint sensor) disposed on the rear surface 210B of the housing 210. In an embodiment (not shown), in addition to being disposed on the front surface 210A (e.g., the display 220) of the housing 210, the fingerprint sensor may also be disposed on the rear surface 210B of the housing 210. The electronic device 200 may further include a sensor module not shown, such as at least one of a gesture sensor, a gyroscope sensor, an atmospheric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a color sensor, an infrared (IR) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illumination sensor (not shown).

[0064] According to an embodiment, the camera modules 205 and 206 may include a front camera module 205 disposed on a first surface 210A of the electronic device 200 and a rear camera module 206 and / or a flash 204 disposed on a rear surface 210B. The camera modules 205 and 206 may include one or more lenses, an image sensor and / or an image signal processor. The flash 204 may include, for example, a light emitting diode (LED) or a xenon lamp. According to an embodiment, two or more lenses (an infrared (IR) camera, a wide-angle lens, and a telephoto lens) and an image sensor may be disposed on one surface of the electronic device 200.

[0065] According to an embodiment, the key input device 217 may be provided on the side surface 210C of the housing 210. According to an embodiment, the electronic device 200 may not include all or some of the key input devices 217 mentioned above, and the key input devices 217 not included may be implemented in other forms (e.g., as soft keys) on the display 220. According to an embodiment, at least a portion of the key input device 217 may be provided on the side frame structure 218.

[0066] According to an embodiment, a light emitting device may be provided, for example, on the front surface 210A of the housing 210. The light emitting device (not shown) may provide, for example, information about the state of the electronic device 200 in the form of light. According to an embodiment, the light emitting device (not shown) may provide a light source that interacts with, for example, the front camera module 205. The light emitting device (not shown) may include, for example, a light emitting diode (LED), an infrared (IR) LED, and / or a xenon lamp.

[0067] According to an embodiment, the connector holes 208 and 209 may include: a first connector hole 208 for receiving a connector (e.g., a headphone jack) for transmitting / receiving an audio signal to / from an external electronic device or a connector (e.g., a USB connector) for transmitting / receiving power and / or data to / from an external electronic device; and / or a second connector hole 209 for receiving a storage device (e.g., a user identification module (SIM) card). According to an embodiment, the first connector hole 208 and / or the second connector hole 209 may be omitted.

[0068] Figure 4 is an exploded perspective view showing an electronic device according to an embodiment of the present disclosure;

[0069] Reference Figure 4 , the electronic device 200 (eg, Figure 2 and Figure 3 The electronic device 200 may include a front panel 222 (eg, Figure 2 202), a display 220 (e.g., Figure 2 , a display 220), a bracket 232 (e.g., a front support member), a printed circuit board 240, a battery 250, a rear case 260 (e.g., a rear support member), an antenna 270, and a rear plate 280 (e.g., Figure 3 According to an embodiment, the electronic device 200 may omit at least one of the components (eg, the rear case 260) or may add other components. At least one component of the electronic device 200 may be connected to the rear panel 211 of the electronic device 200. Figure 2 or Figure 3 At least one component of the electronic device 200 is the same or similar, and will not be described again below. According to an embodiment, the configuration of the side frame structure 231, the bracket 232, the rear shell 260 and / or the rear plate 280 can be interpreted as included in the housing (e.g., Figure 2 For example, the side frame structure 231, the bracket 232, the rear shell 260 and / or the rear plate 280 can be part of the housing 210.

[0070] According to an embodiment, the bracket 232 may be disposed inside the electronic device 200 to be connected to or integrated with the side frame structure 231. The bracket 232 may be formed of, for example, a metal and / or a non-metal material (e.g., a polymer). The bracket 232 may receive the display 220 on one surface and the printed circuit board 240 on another surface. The processor (e.g., Figure 1 processor 120), memory (e.g., Figure 1 Memory 130) and / or interfaces (e.g., Figure 1 The interface 177) can be mounted on the printed circuit board 240.

[0071] According to an embodiment, the battery 250 may be a device for supplying power to at least one component (e.g., the camera module 212) of the electronic device 200. The battery 250 may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell. At least a portion of the battery 250 may be disposed on substantially the same plane as the printed circuit board 240. The battery 250 may be integrally or detachably disposed inside the electronic device 200.

[0072] According to an embodiment, the rear case 260 may be disposed between the printed circuit board 240 and the antenna 270. For example, the rear case 260 may include one surface to which at least one of the printed circuit board 240 and the battery 250 is coupled, and another surface to which the antenna 270 is coupled.

[0073] According to an embodiment, the antenna 270 may be disposed between the back plate 280 and the battery 250. The antenna 270 may include, for example, a near field communication (NFC) antenna, a wireless charging antenna, and / or a magnetic secure transmission (MST) antenna. The antenna 270 may communicate with, for example, an external device over a short distance, or may wirelessly transmit or receive power necessary for charging. For example, the antenna 270 may include a coil for wireless charging. According to an embodiment, the antenna structure may be formed by a portion or combination of the side frame structure 231 and / or the bracket 232.

[0074] According to an embodiment, the electronic device 200 may include a second housing (eg, Figure 2 According to an embodiment, the camera module 212 may be disposed on the bracket 232 and may be a rear camera module (eg, Figure 3 According to an embodiment, at least a portion of the camera module 212 may be exposed to the outside of the electronic device 200 through an opening 282 formed in the rear plate 280. According to an embodiment, the configuration of the camera module 212 may be wholly or partially different from that of the rear plate 280. Figure 3 The configuration of the camera module 206 is the same.

[0075] Figures 2 to 4 The electronic device 200 disclosed in the embodiment has a bar-type or plate-type appearance, but the present disclosure is not limited thereto. For example, the electronic device shown may be a rollable electronic device or a foldable electronic device. A “rollable electronic device” may refer to an electronic device at least a portion of which may be rolled or curled or received in a housing (e.g., Figure 2 210), because the display (eg, Figure 4The display 220 of the rollable electronic device can be bent and deformed. As the display is stretched out or exposed to the outside with a larger area according to user needs, the rollable electronic device can use the expanded second display area.

[0076] Figure 5 is a rear view showing an electronic device according to an embodiment of the present disclosure. Figure 6 It is along Figure 5 A cross-sectional view taken along line AA'. Figure 7 is an exemplary view illustrating an optical path of a camera module according to an embodiment of the present disclosure.

[0077] Reference Figure 5 , Figure 6 and / or Figure 7 , the electronic device 400 may include a rear panel 380 and a camera module 500 . Figure 5 , Figure 6 and / or Figure 7 The configuration of the rear panel 380 and the camera module 500 may be wholly or partially the same as Figure 4 The configurations of the rear plate 280 and the camera module 212 are the same.

[0078] According to an embodiment, the electronic device 400 may include a Figure 3 210B). In an embodiment, the camera cover 385 may be a part of the rear plate 380. In an embodiment, the camera cover 385 may be coupled to the rear plate 380 by a decorative member 389, and when viewed from the outside, the decorative member 389 may be exposed in a form surrounding the camera cover 385.

[0079] According to an embodiment, the camera cover 385 may include a plurality of transparent areas 387. The electronic device 400 may receive external light or radiate light outward through at least one of the transparent areas 387. For example, the electronic device 400 may include at least one camera module 500 (e.g., Figure 1 and / or Figure 4, camera modules 180 and 212), and at least one light source (e.g., an infrared light source) arranged to correspond to the others in the transparent area 387. The light source can emit light to an area outside the electronic device 400. The surrounding environment can then reflect the light to provide a better photo. In an embodiment, the camera module 500 can receive external light from the outside of the electronic device 400 through any of the transparent areas 387. In an embodiment, the electronic device 400 or the camera module 500 may further include a camera supporting member 381. The camera supporting member 381 can place or fix at least one of the camera module 500 or another camera module adjacent to the camera module 500 (e.g., a wide-angle camera, an ultra-wide-angle camera, or a macro camera) inside the back plate 380 or the camera cover 385. According to an embodiment, the camera cover 385 can visually expose at least a portion of the camera module 500 from the appearance of the electronic device 400 while making at least a portion of the camera module 500 consistent with the appearance of the electronic device 400. In an embodiment, the camera supporting member 381 may be substantially Figure 4 The bracket 232 or the portion of the rear shell 260 .

[0080] According to an embodiment, the electronic device 400 may include the camera module 500 or at least one of a wide-angle camera, an ultra-wide-angle camera, a macro camera, a telephoto camera, or an infrared photodiode as a light receiving element. The electronic device 400 may include a light source or a flash (e.g., Figure 3 The electronic device 400 may use an infrared laser diode and an infrared photodiode to emit infrared laser light to a subject and receive infrared laser light reflected by the subject, thereby detecting the distance or depth of the subject. In an embodiment, the electronic device 400 may use any one of the cameras or a combination of two or more to capture a subject, and use a flash to provide light to the subject when necessary.

[0081] According to an embodiment, among the cameras, a wide-angle camera, an ultra-wide-angle camera, or a macro camera may have a shorter length in the optical axis direction of the lens compared to a telephoto camera (e.g., camera module 500). For example, a telephoto camera (e.g., camera module 500) having a relatively long focal length may be longer than other cameras in the total lens length of lenses 423a, 423b, and 423c. The "total lens length" may represent the distance from the object side surface of the first object side lens to the image plane of the image sensor 411. The object side is considered to be the side of the photographed object, and the image plane or image side is the side that receives light.

[0082] In an embodiment, in a wide-angle camera, an ultra-wide-angle camera, or a macro camera, although the lens is arranged along the thickness of the electronic device 400 (eg, Figure 4 or Figure 6The thickness of the electronic device 400 may be arranged in a direction (thickness measured in the Z-axis direction), but the substantial impact on the thickness of the electronic device 400 may be small. For example, the wide-angle camera, the ultra-wide-angle camera, or the macro camera may be arranged so that the direction in which light is incident from the outside to the electronic device 400 is substantially the same as the direction of the optical axis of the lens.

[0083] In contrast, the camera module 500 (e.g., a telephoto camera) has a small viewing angle, but can be used to capture subjects at a greater distance, and can include more lenses 421a, 421b, 423a, 423b, and 423c. For example, when the lenses 423a, 423b, and 423c of the camera module 500 are arranged in the thickness direction (e.g., the Z-axis direction) of the electronic device 400, the camera module 500 can protrude outside the electronic device 400. In the present disclosure, the camera module 500 may include at least one refractive member 413 and 415 that reflects or refracts the incident light IL to different directions. According to an embodiment, the light beams IL, RL1, and RL2 may travel substantially along the optical axis O. The optical axis O may be defined by the lens groups 421 and 423 and / or the refractive members 413 and 415. For example, the optical axis O may be a straight line connecting the centers of the surfaces of the lens groups 421 and 423 and the refractive members 413 and 415. When implementing the telephoto function, in at least a portion of the camera module 500, the lenses 423a, 423b and 423c may be arranged to move forward and backward in the incident direction of light or in the traveling direction of reflected light or refracted light, preventing the thickness of the electronic device 400 from increasing.

[0084] Reference Figure 6 and Figure 7 , the folded camera (e.g., camera module 500) may include a first refractive member 413, a second refractive member 415, an image sensor 411, and / or at least one optical member. In an embodiment, the at least one optical member may be referred to as at least one of a first lens group 421 or a second lens group 423 including first lenses 421a and 421b. According to an embodiment, the second lens group 423 may include second lenses 423a, 423b, and 423c and / or a dummy member 423d.

[0085] According to an embodiment, at least one optical member may guide or focus the light RL1 to the second refractive member 415. At least one optical member may reduce the direct incidence of the light RL1 reflected or refracted to the image sensor 411. In general, the term "optical member" may refer to a component capable of transmitting, refracting, scattering, absorbing or reflecting light. In the present disclosure, "optical member" will be used to refer to the second lens 423a, 423b and 423c or the dummy member 423d disposed between the first refractive member 413 and the second refractive member 415, but it should be noted that the term or expression does not limit the embodiments of the present disclosure. For example, the first refractive member 413, the second refractive member 415 and / or the first lenses 421a and 421b (or the first lens group 421) are a type of optical member. In the following detailed description, if necessary, the optical member disposed between the first refractive member 413 and the second refractive member 415 may be separately described as a second lens and / or a dummy member and described, or a combination of the second lenses 423a, 423b and 423c or the dummy member 423d may be described as a second lens group 423.

[0086] According to an embodiment, the first refractive member 413 may include, for example, a prism or a mirror, and reflect or refract the light IL incident in the first direction D1 to a second direction D2 intersecting the first direction D1. The first direction D1 may represent, for example, a direction in which the light IL is incident from the outside to the electronic device 400 or the camera module 500 through any one of the transparent areas 387 when capturing a subject. In an embodiment, the first direction D1 may represent a capturing direction, a direction toward a subject, an orientation direction of the camera module 500, or a direction parallel thereto. In an embodiment, the first direction D1 may be parallel to a thickness direction or a Z-axis direction of the electronic device 400. According to an embodiment, when the direction of reflection or refraction of light (e.g., the second direction D2) is perpendicular to the incident direction of light (e.g., the first direction D1), the camera module 500 or the optical path may be easily designed. For example, the second direction D2 may be parallel to a length direction (e.g., a Y-axis direction) or a width direction (e.g., an X-axis direction) of the electronic device 400. However, the structure of the camera module 500 of the present disclosure is not limited thereto and may be changed depending on the arrangement and specifications of the camera module 500 or the first refraction member 413 in the electronic device 400 .

[0087] According to an embodiment, the second refractive member 415 may include, for example, a prism or a mirror, and reflects or refracts the light RL1 reflected or refracted by the first refractive member 413 and incident along the second direction D2 to a third direction D3 intersecting the second direction D2. In an embodiment, the third direction D3 may be substantially perpendicular to the second direction D2. For example, the third direction D3 may represent a direction parallel to the Z-axis direction. However, the structure of the camera module 500 of the present disclosure is not limited thereto, and may be changed depending on the arrangement and specifications of the camera module 500 or the second refractive member 415 in the electronic device 400. In an embodiment, the third direction D3 may be substantially parallel to the first direction D1.

[0088] According to an embodiment, the image sensor 411 may be configured to detect light RL2 reflected or refracted by the second refractive member 415 and incident along the third direction D3. For example, light IL incident from the outside may be detected by the image sensor 411 through the first refractive member 413 and the second refractive member 415. The electronic device 400 or the camera module 500 may obtain a subject image based on a signal or information detected by the image sensor 411. In an embodiment, the image sensor 411 may be arranged substantially parallel to the XY plane. For example, when the camera module 500 has an image stabilization function of a structure that moves or shifts the image sensor 411, the image sensor 411 may be horizontally moved on a plane perpendicular to the first direction D1 or the third direction D3. The image sensor 411 may be located behind the refractive member 415. For example, the image sensor 411 may face the exit surface of the refractive member 415.

[0089] According to an embodiment, when the electronic device 400 and / or the camera module 500 performs an image stabilization operation, the image sensor 411 may be shifted in the length direction (e.g., Y-axis direction) or the width direction (e.g., X-axis direction) of the electronic device 400. For example, since the image sensor 411 is disposed on a plane perpendicular to the first direction D1 or the third direction D3, it is possible to easily increase the size of the image sensor 411 and / or easily ensure a space for image stabilization operation in an electronic device having a small thickness (e.g., a thickness of about 10 mm or less). In an embodiment, when the camera module 500 is used as a telephoto camera, the quality of the captured image may be further enhanced by including an image stabilization function. In an embodiment, when the size of the image sensor 411 is increased, the performance of the camera module 500 may be further improved.

[0090] According to an embodiment, the camera module 500 may include a lens group (e.g., a first lens group 421 including at least one first lens 421a and 421b) to guide or focus the light IL incident from the first direction D1 to the first refractive member 413. At least one optical member may be disposed between the first refractive member 413 and the second refractive member 415 to form a second lens group 423. In an embodiment, the first lens (e.g., the first lens 421a) disposed on the object side in the first lens group 421 or the camera module 500 may have a positive refractive power. For example, since the first lens 421a is configured to focus or align the light IL incident from the outside to the first refractive member 413, the optical system from the first lens 421a to the image sensor 411 may be reduced in size. According to an embodiment, the first lens group 421 may further include an additional first lens 421b to focus or align the light incident from the outside.

[0091] According to an embodiment, at least one optical member (e.g., the second lens group 423) may include a dummy member 423d and a light blocking mechanism 425. The dummy member 423d may be provided in, for example, the camera module 500 or the electronic device 400, and may have a cylindrical shape extending along the second direction D2 and transmit the light RL1 traveling along the second direction D2. In an embodiment, the dummy member 423d may be one of the lenses having a positive or negative refractive power. In an embodiment, the dummy member 423d may be a component integrally formed with any one of the second lenses 423a, 423b, and 423c or the second refractive member 415.

[0092] According to an embodiment, the light blocking member 425 may absorb, scatter or reflect light. According to an embodiment, the light blocking member 425 may be formed by etching or black painting at least a portion of the outer peripheral surface of the dummy member 423d and / or printing or depositing a reflective layer on at least a portion of the outer peripheral surface of the dummy member 423d. According to an embodiment, the light blocking member 425 may be formed or disposed on at least a portion of the outer peripheral surface of the dummy member 423d.

[0093] According to an embodiment, the refractive members 413 and 415 may include a light blocking coating (or immersion paint), and when including the light blocking coating, the refractive members 413 and 415 may be configured to satisfy the following Equation 7.

[0094] [Equation 7]

[0095]

[0096] Ria may represent the refractive index of the raw material of the light blocking coating (e.g., the light blocking member 425) (or the immersed paint). For example, Ria may represent the refractive index of the raw material other than carbon in the paint of the light blocking coating (or the immersed paint). Rib may represent the refractive index of the raw material of the refractive members 413 and 415. For example, Rib may represent the refractive index of the raw material of the prism forming the effective area 610 of the refractive member (e.g., Figure 8a or Figure 8b refractive member 600).

[0097] In an embodiment, a portion of light reflected or refracted by the first refraction member 413 may be absorbed, scattered, or reflected by the light blocking member 425. The light blocking member 425 may substantially block unintentional light incident to the image sensor 411.

[0098] According to an embodiment, the position of the light blocking member 425 is not limited to the outer peripheral surface of the dummy member 423d. For example, the light blocking member 425 may be disposed on at least a portion of the first refractive member 413 and / or at least a portion of the second refractive member 415. The light blocking member 425 may be located in a dummy region (e.g., Figure 8a or Figure 8b In the virtual area 620).

[0099] According to an embodiment, light may be incident to the camera module 500 from a direction other than the capturing direction or the orientation direction, or may be reflected or refracted in the camera module 500 in a path other than the optical path (eg, Figure 7 ) and is detected by the image sensor. Light incident on the image sensor through an unexpected path or an image generated thereby may be referred to as "ghost light" or a "ghost image". A ghost image may appear as a faint replica of a photographed subject that is slightly offset from the subject in the image. Ghost images may degrade the quality of an image obtained by the camera module 500. According to an embodiment, the light blocking member 425 may absorb, scatter or reflect ghost light (e.g., light reflected or refracted by the first refractive member 413), blocking the ghost light from being directly incident on the image sensor 411. For example, light transmitted from the camera module 500 in the first direction D1, the second direction D2 and / or the third direction D3 in sequence (e.g., along the Figure 7 Light traveling along the paths indicated by “IL”, “RL1”, and “RL2”) may be incident on the image sensor 411, and light traveling along another path may be substantially blocked from being incident on the image sensor 411.

[0100] According to an embodiment, at least one optical member may include at least one second lens 423a, 423b, and 423c that moves forward and backward along an axis substantially the same as the second direction D2 between the first refractive member 413 and the second refractive member 415. For example, the electronic device 400 or the camera module 500 may adjust the focal length by moving at least one second lens 423a, 423b, and 423c forward and backward relative to an axis substantially the same as the second direction D2. A small electronic device such as a smart phone may have a thickness of about 10 mm or less, in which case the range in which the lens can advance and retreat in the thickness direction may be limited.

[0101] According to an embodiment, the second direction D2 may be substantially parallel to the length direction (eg, Figure 4 Y-axis direction), width direction (for example, Figure 4 The at least one second lens 423a, 423b, and 423c may move forward and backward in a larger range than a general wide-angle camera that moves forward and backward in the Z-axis direction for focusing (or focal length adjustment). For example, since the at least one second lens 423a, 423b, and 423c moves forward and backward along an axis substantially the same as the second direction D2, the design freedom in ensuring a forward and backward movement space for focusing (or focal length adjustment) may be improved while improving the telephoto performance of the camera module 500.

[0102] According to an embodiment, the electronic device 400 and / or the camera module 500 may further include an infrared cut filter 419. In an embodiment, the infrared cut filter 419 may block light of an infrared or near-infrared wavelength band from being incident on the image sensor 411, and may be disposed at any position in the optical path between the first lens 421a and the image sensor 411. In an embodiment, the infrared cut filter 419 may be disposed at a position close to the image sensor 411 (e.g., between the image sensor 411 and the second refractive member 415), preventing or inhibiting the infrared cut filter 419 from being visually exposed to the outside. In an embodiment, the first refractive member 413, the second refractive member 415, and / or at least one optical member (e.g., the second lens group 423) may include an infrared cut coating. In this case, the infrared cut filter 419 may be omitted. In an embodiment, an infrared cut coating may be provided on at least one of the image sensor side surface and the object side surface of the dummy member 423d or the second refractive member 415. Therefore, the image sensor 411 may detect light substantially transmitted through the infrared cut filter 419 (or the infrared cut coating).

[0103] According to an embodiment, the electronic device 400 and / or the camera module 500 may not include an optical member, for example, the dummy member 423 d . In this case, the light blocking member 425 may be disposed on at least a portion of the infrared cut filter 419 .

[0104] although Figure 6 and Figure 7 The electronic device 400 and / or the camera module 500 is shown to include a structure of two refractive members 413 and 415, but the structure of the electronic device 400 and / or the camera module 500 is not limited thereto. For example, in an embodiment, the electronic device 400 may include a first refractive member 413, but may not include a second refractive member 415. According to an embodiment, the image sensor 411 and / or the infrared cut filter 419 may be positioned substantially parallel to the second lens group 423.

[0105] The refractive members 413 and 415 of the present disclosure may be selectively designed depending on the structure of the camera module 500. For example, in an embodiment, the refractive members (eg, Figure 6 The refractive member 415 may have a triangular prism shape. In an embodiment, the refractive member (eg, Figure 7 The refractive members 413 and 415 may have a trapezoidal prism shape. The shapes of the refractive members 413 and 415 are not limited to the structures shown in the present disclosure. For example, if the refractive members 413 and 415 reflect, refract, or transmit light, the refractive members 413 and 415 may have a structure other than a triangular or trapezoidal prism (e.g., a column structure with a rhombus bottom).

[0106] Figure 8a is a perspective view illustrating a refraction member according to an embodiment of the present disclosure. Figure 8b is a perspective view illustrating a refraction member according to an embodiment of the present disclosure. Fig. 9 is a side view showing a refractive member according to an embodiment of the present disclosure.

[0107] Reference Figure 8a , Figure 8b and Fig. 9 , the refractive member 600 may include an effective area 610 and a dummy area 620. For example, the term "effective area 610" may refer to a portion that refracts light toward the image sensor 411. In one embodiment, when designing or arranging the refractive member 600, the effective area 610 may refer to a travel path of light incident on the image sensor 411 or a portion through which light passes. For example, light including image information of a subject may be guided to the image sensor 411 via at least a portion of the effective area 610. In an embodiment, a portion of the effective area 610 (e.g., the second surface 600b) may substantially reflect light so that it is incident on the image sensor 411.

[0108] According to an embodiment, the dummy area 620 may be a part of the refractive member 600, and is a part through which the light guided to the image sensor 411 does not pass. For example, when light enters the dummy area 620 from an unexpected path or an unexpected angle direction, the dummy area 620 may be one of the structures that cause internal reflection to be described later. According to an embodiment, the dummy area 620 may be provided on at least a portion of the edge of the effective area 610. Here, the term "edge of the effective area 610" may refer to a side of the first surface 600a to be described later that contacts the side 601, a side of the second surface 600b to be described later that contacts the side 601, and / or a side of the third surface 600c to be described later that contacts the side 601. In this case, it can be understood that the dummy area 620 is substantially disposed on the side 601. In one embodiment, the term "edge of the active area 610" may refer to at least a portion of the first surface 600a to be described later that contacts the side 601, at least a portion of the second surface 600b to be described later that contacts the side 601, and / or at least a portion of the third surface 600c to be described later that contacts the side 601. In this case, it can be understood that the dummy area 620 is provided on the side 601 and on portions P11, P12, P21, P22, P31, and P32 of the first surface 600a, the second surface 600b, and / or the third surface 600c.

[0109] In one configuration, the dummy region 620 may scatter or absorb at least a portion of the light incident to the dummy region 620 by satisfying the condition of a bidirectional scattering distribution function to be described later. Here, "scattering or absorbing at least a portion of the incident light" may be understood as suppressing the light incident to the image sensor 411 through an undesigned path by suppressing internal reflection in the dummy region 620. In one embodiment, when the dummy region 620 includes a roughening pattern 621 and / or a nanostructure, at least a portion of the incident light may be scattered. In one embodiment, when a light blocking member (e.g., the light blocking member 425 in FIG. 62 ) or a light blocking coating is provided on the dummy region 620, at least a portion of the incident light may be blocked by the light blocking member (e.g., Figure 6 The light absorbing light shielding member or light blocking coating may be replaced with a coating immersed in the dummy area 620, or may be provided together with the coating immersed in the dummy area 620. In one embodiment, when the light blocking member or light blocking coating is combined with the coating immersed in the dummy area 620, the absorption rate of the incident light may be increased.

[0110] According to an embodiment, when the refractive member 600 has a polygonal (e.g., square, rhombus, and / or trapezoidal) column shape, the dummy region 620 may be disposed on at least a portion of an edge of the effective region 610. For example, the dummy region 620 may be disposed on at least two sides (e.g., Figure 8a or Figure 8b side portion 601; first side portion 601a and / or second side portion 601b). Figure 8a , Figure 8b and Fig. 9 The configuration of the refractive member 600 may be wholly or partially related to Figure 6 and Figure 7 The configuration of the first protective member 413 and / or the second protective member 415 is the same. For example, the refractive member 600 may reflect or refract the light passing through the optical member (eg, Figure 6 At least a portion of the light from the first lens group 421 and / or the second lens group 423).

[0111] According to an embodiment, the active area 610 may transmit at least a portion of the light or refract at least a portion of the light. For example, the active area 610 may provide a portion of the light transmitted from the lens (e.g., Figure 6 The effective area 610 may be formed of a substantially transparent material. According to an embodiment, the effective area 610 may be referred to as an area in which the roughening pattern 621 is not formed in the refractive member 600. According to an embodiment, the effective area 610 may provide light (e.g., Figure 7 For example, the effective area 610 may be a portion of the refractive member 600, and the optical axis (eg, Figure 7 The optical axis O of the camera module 500 passes through the portion. For example, the effective area 610 may be located in at least a portion of the central portion of the refractive member 600. According to an embodiment, light incident on the camera module 500 (eg, Figure 7 The light IL) can be substantially transmitted to the effective area 610.

[0112] According to an embodiment, the effective area 610 may be a portion of the refractive member 600 for adjusting the path of light. For example, the effective area 610 may include a surface for adjusting the path of light. According to an embodiment, the effective area 610 may include an incident surface to which light is first transmitted among the surfaces of the refractive member 600. The incident surface may be referred to as an initial incident surface or a first incident surface.

[0113] According to an embodiment, the effective area 610 may include a reflective surface inclined relative to the first incident surface of the refractive member 600. The reflective surface may not form a right angle with the incident surface. For example, the reflective surface may reflect at least a portion of the light passing through the incident surface. According to an embodiment, a plurality of reflective surfaces may be provided on the refractive member 600. For example, depending on the shape of the refractive member 600, the effective area 610 may include at least one reflective surface. When a plurality of reflective surfaces are provided, the light incident on the refractive member 600 may be reflected or refracted at least twice inside the refractive member 600 and then guided to the image sensor (e.g., Figure 6 or Figure 7 image sensor 411).

[0114] According to an embodiment, the effective area 610 may include an exit surface through which light is finally emitted among the surfaces of the refractive member 600. The exit surface may be referred to as a final exit surface or a first exit surface. Figure 8a and Figure 8b ), the first surface 600a may be represented as an incident surface, the second surface 600b may be represented as a reflecting surface, and the third surface 600c may be represented as an exit surface. For example, the first surface 600a may be arranged to face the subject, and may be arranged to cross or be substantially perpendicular to the light incident from the outside. In an embodiment, the third surface 600c may be arranged to cross or be substantially perpendicular to the light emitted toward the image sensor 411. In an embodiment, a plurality of second surfaces 600b serving as reflecting surfaces may be provided, and the plurality of second surfaces 600b may be guided to the third surface 600c by reflecting or refracting the light incident through the first surface 600a. According to an embodiment, the refractive member 600 may have various shapes (e.g., a triangular prism, a trapezoidal prism, or a rhombus prism). The contents described with respect to the incident surface, the reflecting surface, and / or the exit surface may be applied to the refractive member 600 having various shapes.

[0115] Those skilled in the art will understand the incident surface, the reflective surface or the exit surface. For example, reflection also occurs on the incident surface where light is incident, but those skilled in the art can distinguish the incident surface from the reflective surface by considering the amount of light reflected and incident.

[0116] According to an embodiment, the refractive member 600 may include a component for enhancing light transmission and / or light refraction in the active area 610. For example, at least one of a low-reflection coating or a mirror coating may be provided on the active area 610. According to an embodiment, the materials of the low-reflection coating and the mirror coating may be different from the material of the refractive member 600.

[0117] According to an embodiment, the refractive member 600 may reflect or refract light 1 to 5 times. The number of times the refractive member 600 reflects or refracts light may vary based on the shape of the refractive member 600.

[0118] According to an embodiment, the dummy area 620 may reduce light reflection. The term "dummy area 620 reduces light reflection" may be understood as suppressing light from advancing toward the image sensor 411 by scattering or absorbing light incident on the dummy area 620. In an embodiment, the dummy area 620 may include a roughening pattern 621. Since the roughening pattern 621 is provided, the reflectivity of the dummy area 620 may be lower than the reflectivity of the effective area 610, or at least a portion of the light incident on the dummy area 620 may be scattered. For example, the roughening pattern 621 may scatter at least a portion of the light incident on the dummy area 620, or may at least suppress light from advancing toward the image sensor (e.g., Figure 7 image sensor 411) moves forward.

[0119] According to an embodiment, the roughening pattern 621 may refer to a plurality of pits or protrusions formed in the refractive member 600. According to an embodiment, the roughening pattern 621 may be referred to as an etched area or an etched surface. According to an embodiment, the roughening pattern 621 may be referred to as an irregular pattern including a plurality of pits and / or a plurality of protrusions. According to an embodiment, the dummy area 620 may be a portion of the refractive member 600 to shape the refractive member and / or to connect with an electronic device (e.g., Figure 2 The part is required for the position of the refractive member 600 to be connected or fixed to another component of the electronic device 200). In an embodiment, the dummy area 620 may be partially disposed on the first surface 600a, the second surface 600b and / or the third surface 600c. For example, the dummy area 620 may be partially disposed on the first surface 600a, the second surface 600b and / or the third surface 600c at the side end of the effective area 610. According to an embodiment, the dummy area 620 may be referred to as an invalid area. According to an embodiment, the roughening pattern 621 may be referred to as a fine pattern. According to an embodiment, the roughening pattern 621 may be formed by corrosion or etching (e.g., dry etching).

[0120] According to an embodiment, light incident on the dummy region 620 may be absorbed or scattered because a nanostructure is provided instead of the roughening pattern 621. In an embodiment, the roughening pattern 621 and the nanostructure are combined in the dummy region 620 to scatter the light incident on the dummy region 620, thereby further suppressing the progress toward the image sensor 411.

[0121] According to an embodiment, due to the roughened pattern 621 and / or the nanostructure, the degree of reflection of light incident on the dummy region 620 may be reduced, thereby reducing the reflection from the camera module (eg, Figure 6For example, when light incident on the side 601 and / or edge of the refractive member 600 is reflected, unintended reflected light (or unintended refracted light) may be transmitted to the image sensor (e.g., Figure 7 The image sensor 411 of the image sensor 411 is formed, reducing the quality of the image obtained from the image sensor 411. As described later, the depth or etching amount of the roughening pattern 621 may be about 1 μm. According to an embodiment, the roughness average value (Ra) of the dummy area 620 may be about 1.0 μm or more. The term "roughness average value (Ra)" may refer to, for example, the average roughness of the center line of the surface of an object or structure.

[0122] According to an embodiment, the dummy area 620 may form at least a portion of the outer surface of the refractive member 600. For example, the dummy area 620 may be located on at least a portion of the side 601 or edge (e.g., edge of the first surface 600a, the second surface 600b, and / or the third surface 600c) of the refractive member 600. According to an embodiment, the dummy area 620 may surround at least a portion of the effective area 610. According to an embodiment, the side 601 may be referred to as a portion of the refractive member 600, and the optical axis (e.g., Figure 7 The optical axis O in the image sensor 411 does not pass through the portion. For example, light to be guided to the image sensor 411 may advance in an area (e.g., the effective area 610) between two edges of the refractive member 600 inside the refractive member 600, and may not pass through the dummy area 620. According to an embodiment, the dummy area 620 may be substantially parallel to the optical axis O. However, since the light guided to the image sensor 411 does not substantially pass through the dummy area 620, the arrangement of the dummy area 620 relative to the optical axis O may be variously changed. In the arrangement of the dummy area 620, it may be considered Figure 6 The electronic device 400 or the camera module 500 may be configured to meet the specifications required by the electronic device 400 or the camera module 500 without interfering with the advancing path of light to be guided to the image sensor 411.

[0123] According to an embodiment, due to the roughening pattern 621 and / or the nanostructure, the optical property or optical characteristic of the dummy region 620 may be different from the optical property or optical characteristic of the effective region 610. According to an embodiment, the first surface roughness of the dummy region 620 may be greater than the second surface roughness of the effective region 610. According to an embodiment, the first surface reflectivity of the dummy region 620 may be lower than the second surface reflectivity of the effective region 610. According to an embodiment, the first surface reflectivity of the dummy region 620 may be about 2.0% or less. For example, the first surface reflectivity of the dummy region 620 may be about 0.5% or less. According to an embodiment, the second surface reflectivity of the effective region 610 may exceed about 2.0%.

[0124] According to an embodiment, the dummy area 620 may be a path through which the optical axis O does not substantially pass. For example, the dummy area 620 may be at least partially disposed on at least a portion of a side surface (eg, the side portion 601 ) of the refractive member 600 .

[0125] According to an embodiment, the refractive member 600 may have a substantially triangular column shape or a triangular pyramid shape. For example, the refractive member 600 may include a Figure 2 The electronic device 200 includes a first surface 600a outside the electronic device 200, a second surface 600b configured to reflect or refract at least a portion of the light passing through the first surface 600a, and a second surface 600b configured to transmit at least a portion of the light reflected or refracted by the second surface 600b to an image sensor (e.g., Figure 7 The first surface 600a may be substantially perpendicular to the third surface 600c. The second surface 600b may extend from the first surface 600a to the third surface 600c. The second surface 600b may be inclined relative to the first surface 600a and the third surface 600c. In an embodiment, the number of the first surface 600a, the second surface 600b, and / or the third surface 600c or the relative arrangement (e.g., angles with respect to each other) of the first surface 600a, the second surface 600b, and / or the third surface 600c is not limited to the above examples and may be configured according to the electronic device (e.g., Figures 1 to 5 The electronic device 101, 200, 400) and / or the camera module (eg, Figure 6 The design specifications of the camera module 500 are appropriately changed. For example, when the refractive member 600 is in the shape of a parallelogram column, a rhombus column, or a trapezoidal column, a plurality of surfaces (eg, the second surface 600b) that reflect or refract light may be provided.

[0126] According to an embodiment, the effective area 610 may provide an optical path (e.g., a path through which light is transmitted or advanced). The effective area 610 may provide an incident surface, a reflective surface, and an exit surface of the refractive member 600. For example, when light is transmitted to the refractive member 600, at least a portion of a first surface 600a of the refractive member 600 may be represented as an incident surface, at least a portion of a second surface 600b of the refractive member 600 may be represented as a reflective surface, and at least a portion of a third surface 600c of the refractive member 600 may be represented as an exit surface.

[0127] According to an embodiment, the refractive member 600 may include a side portion 601 defined by a first surface 600a, a second surface 600b, and a third surface 600c. For example, the side portion 601 may be a region (or surface) substantially surrounded by a portion of an edge of the first surface 600a, a portion of an edge of the second surface 600b, and a portion of an edge of the third surface 600c, and may be referred to as a portion of a surface of the refractive member 600. According to an embodiment, the side portion 601 may include a first side surface 601a and a second side surface 601b opposite to the first side surface 601a.

[0128] According to an embodiment, a portion of the dummy region 620 may be located on the side portion 601. For example, the dummy region 620 may be at least partially located on at least one of the first side surface 601a or the second side surface 601b. According to an embodiment, because the dummy region 620 is located on the side portion 601, the degree to which light incident on the side portion 601 is transmitted from the outside of the refractive member 600 or the inside of the refractive member 600 to the image sensor 411 may be reduced. For example, the dummy region 620 and / or the side portion 601 may suppress stray light incident on the image sensor, so that the dummy region 620 and / or the side portion 601 substantially absorbs or scatters the incident light.

[0129] According to an embodiment, the refractive member 600 may include a substantially transparent material. According to an embodiment, the refractive member 600 may be formed of glass. The roughening pattern 621 may be formed by a laser. For example, the roughening pattern 621 may be referred to as a convex or concave shape formed on the glass of the refractive member 600. In the present disclosure, the refractive member 600 has been described as having a triangular column shape or a triangular cone shape, but the shape of the refractive member 600 is not limited thereto. For example, the refractive member 600 may have a column shape, wherein the side portion 601 has a square (e.g., trapezoidal or rectangular) shape. According to an embodiment, the refractive member 600 may have a rhombus cross section. For example, the refractive member 600 may have a column shape, wherein the side portion 601 has a rhombus shape.

[0130] According to an embodiment, the refractive member 600 may be formed of a resin. For example, the refractive member 600 may include plastic that can be manufactured using a mold. According to an embodiment, the roughening pattern 621 may be formed by a mold. For example, the roughening pattern 621 may be formed by a mold including protrusions corresponding to the roughening pattern 621.

[0131] According to an embodiment, the refractive member 600 may include a light blocking coating disposed on the dummy area 620 or a coating immersed in the dummy area 620. The configuration of the light blocking coating may be wholly or partially different from that of the dummy area 620. Figure 6The configuration of the light blocking member 425 is the same as that of the dummy area 620. The light blocking coating or the immersed paint can reduce the degree of reflection of the light incident on the dummy area 620. For example, the light absorptivity of the refractive member 600 with the light blocking coating or the immersed paint can be higher than the light absorptivity of the area where the light blocking coating or the immersed paint is not present, and the light transmittance of the refractive member 600 with the light blocking coating or the immersed paint can be lower than the light transmittance of the area where the light blocking coating or the immersed paint is not present. According to an embodiment, the light blocking coating (e.g., black paint) or the immersed paint can be located in the dummy area 620 in which the roughening pattern 621 is formed. Due to the roughening pattern 621, the occurrence of glare can be reduced, and due to the light blocking coating or the immersed paint, the light absorptivity can be increased and the light transmittance can be reduced.

[0132] According to an embodiment, the refractive member 600 may include a chamfered area 630 to reduce breakage of the refractive member 600. According to an embodiment, the chamfered area 630 may be referred to as a portion of a cutting edge of the refractive member 600. According to an embodiment, the dummy area 620 may be partially located in the chamfered area 630. According to an embodiment, the dummy area 620 may form at least a portion of the chamfered area 630. Because the dummy area 620 is located in the chamfered area 630, the degree of reflection of light incident on the chamfered area 630 may be reduced.

[0133] According to an embodiment, the dummy area 620 may have a specified bidirectional scattering distribution function (BSDF) to reduce internal reflections. According to an embodiment, internal reflections may be referred to as entering the camera module (e.g., Figure 6 The phenomenon that the light inside the camera module 500 is unintentionally reflected by the components. Due to the internal reflection, the quality of the photo captured by the camera module 500 may be reduced, or stains or glare may appear. According to an embodiment, the phenomenon (e.g., glare) caused by internal reflection can be reduced as the surface reflectivity of the refractive member 600 decreases and the surface etching amount increases. For example, when the surface reflectivity of the dummy area 620 of the refractive member 600 is about 2.0% or less and the surface etching amount (e.g., the depth of the roughening pattern 621) is about 1 μm or more, the glare can be reduced. In an embodiment, when the surface etching amount of the dummy area 620 (e.g., the depth of the roughening pattern 621) is about 50 μm, the surface reflectivity of the dummy area 620 is controlled to be about 2.0% or less (e.g., about 0.5%), and the glare of the image obtained by the image sensor 411 can be substantially removed. The values ​​mentioned for surface reflectivity or surface etching are illustrative and may vary depending on design parameters such as the relative positions of the image sensor 411 and the refractive member 600, or the presence of a light shielding coating (or immersion coating). For example, it should be noted that the values ​​mentioned for surface reflectivity or surface etching amount do not limit the embodiments of the present disclosure.

[0134] According to an embodiment, the scattering coefficient (BSDF) of the dummy area 620 may be set to satisfy the following equation. The scattering coefficient (BSDF) may be referred to as the sum of a bidirectional reflection distribution function (BRDF) and a bidirectional transmission distribution function (BTDF). The scattering coefficient may be referred to as a bidirectional scattering distribution function (BSDF). The scattering coefficient may be a function that determines how much light is reflected or transmitted when light is incident on an object. The bidirectional reflection distribution function may be a function for determining which direction the light is reflected. The bidirectional transmission distribution function may be a function for determining which direction the light is transmitted. According to an embodiment, the first scattering coefficient of the dummy area 620 may be lower than the second scattering coefficient of the effective area 610.

[0135] According to an embodiment, the scattering coefficient of the dummy area 620 may satisfy the following equation 1. In an embodiment, the scattering coefficient of the dummy area 620 may be referred to as a bidirectional reflection distribution function. For example, when the bidirectional transmission distribution function has an insignificant effect on the bidirectional scattering distribution function, the scattering coefficient may be substantially determined by the bidirectional reflection distribution function.

[0136] [Equation 1]

[0137]

[0138] In equation 1 above, BB 0 It can represent the angle difference of scattered light in the sinusoidal direction. For example, B can be the angle of scattered light, B 0 The reference angle may be a reference angle that is 0.01 radians (about 0.57 degrees) tilted relative to the reflection surface.

[0139] g may represent the average (e.g., arithmetic mean) of the angle of the scattered light in the cosine direction and the angle of the incident light in the cosine direction. b may represent the BSDF value at a reference angle. S may represent the angle of the BSDF. For example, S may represent the angle of the scattering coefficient of the reflected and scattered light and the scattering coefficient of the incident light in a log-log graph. l may represent the angle at which the reflected light begins to change relative to the incident light. For example, l may be represented as the selective angle of specular reflection at which the scattering coefficient flips to a constant value. m may represent a cosine power. n may represent an angle power. According to an embodiment, equation 1 representing the scattering coefficient may be interpreted as a modified expression of the Harvey-Shack model. Equation 1 will be understood by a person of ordinary skill in the art.

[0140] According to an embodiment, b representing a scattering coefficient value at a reference angle may satisfy Equation 2 below.

[0141] [Equation 2]

[0142] 0.05 <b<0.5

[0143] According to an embodiment, in a log-log plot, S, which refers to an angle between a scattering coefficient of reflected scattered light and a scattering coefficient of incident light, may satisfy the following Equation 3. In Equation 3, a unit of S may be degree.

[0144] [Equation 3]

[0145] -6.0 <S<-0.05

[0146] According to an embodiment, l representing an angle at which reflected light starts to change relative to incident light may satisfy the following Equation 4. In Equation 4, a unit of l may be degree.

[0147] [Equation 4]

[0148] 0.02 <l<1.9

[0149] According to an embodiment, b, S and / or l may be changed according to the design of the camera module 500. According to an embodiment, b may be 0.05 to 0.1. According to an embodiment, S may be -4.2 to -0.05. According to an embodiment, S may be -4.0 to -0.5.

[0150] According to an embodiment, m representing cosine power may satisfy Equation 5 below.

[0151] [Equation 5]

[0152] 0 <m<1.6

[0153] According to an embodiment, n representing the angle power may satisfy Equation 6 below.

[0154] [Equation 6]

[0155] 1.1 <n<9.0

[0156] According to an embodiment, the cosine power and / or the angle power may be changed according to the design of the camera module 500. According to an embodiment, m may be in the range of about 0.0001 to about 1.0. According to an embodiment, n may be in the range of about 1.15 to about 1.56.

[0157] According to an embodiment, Figure 8a , Figure 8b and / or Fig. 9 The structure of the refractive member 600 may be Figure 6 and / or Figure 7 The structure of the camera module 500 is used together.

[0158] Figures 10a to 10d are magnified views of optical members and captured images according to an embodiment of the present disclosure. Fig.11 is a graph showing the surface reflectivity of an optical member according to an embodiment of the present disclosure.

[0159] Reference Fig.10a , Fig.10b , Fig.10c and / or Fig.10d , the refractive member 600 may include a dummy region 620 , and the roughening pattern 621 is located in the dummy region 620 . Fig.10a , Fig.10b , Fig.10c and / or Fig.10d The configuration of the dummy region 620 may be wholly or partially related to Figure 8a and Figure 8b The configuration of the dummy region 620 is the same. Fig.11 The diagram indicated by "10a" measures and shows Fig.10a The surface reflectivity in the virtual area 620 is measured and shown in the diagram indicated by "10b". Fig.10b The surface reflectivity in the dummy area 620 is measured and shown in the diagram indicated by "10c". Fig.10c The surface reflectivity in the dummy area 620 is measured by the diagram indicated by "10d". Fig.10d The surface reflectivity in the dummy area 620 is .

[0160] According to an embodiment, glare F generated in an image I captured by a camera module may be suppressed based on the roughening pattern 621 . Fig.10a The refractive member 600 shows a dummy area 620 that does not include a roughening pattern. Fig.10a , Fig.10b and Fig.10c The refractive member 600 shows a dummy area 620 including a roughened pattern 621 . Fig.10a The size of the glare F generated in the captured image I can be larger than Fig.10b and Fig.10c The size of the glare F generated in the captured image I in .

[0161] According to an embodiment, the size of the glare F may be determined based on the depth of the roughened pattern 621. The depth of the roughened pattern 621 may be formed in various ways. For example, Fig.10b A roughened pattern 621 having a depth of about 14 μm is included. Fig.10c A roughening pattern 621 having a depth of about 6 μm is included. Fig.10d A roughened pattern 621 having a depth of about 52 μm is included. Fig.10b The roughened pattern 621 is formed to be larger than Fig.10cThe roughened pattern 621 is deeper but has a higher surface reflectivity. It is expected that when the depth difference of the roughened pattern 621 is not large, factors such as the shape of the grooves and protrusions, the arrangement density of the grooves and protrusions, and / or the position where the surface reflectivity is measured have a significant effect on the surface reflectivity. For example, by Fig.10b The dummy area 620 and Fig.10d Compared with the surface reflectances 10b and 10d of the dummy area 620, the surface reflectance can generally decrease as the depth of the roughened pattern 621 increases. According to an embodiment, as the depth of the roughened pattern 621 increases, the size of the glare F generated in the image I can decrease. For example, Fig.10d The size of the glare F of the image I captured by the refractive member 600 may be smaller than Fig.10c The size of the glare F of the image I captured by the refractive member 600.

[0162] According to the embodiment, referring to Fig.10a , Fig.10b , Fig.10c , Fig.10d and / or Fig.11 , a roughening pattern 621 having a depth of about 1 μm or more is provided to the dummy area 620 to suppress a glare phenomenon in the obtained image, and by including the roughening pattern 621 in the dummy area 620, the surface reflectivity can be controlled to be about 2% or less. In an embodiment, when the depth of the roughening pattern 621 is about 50 μm or more, glare can be substantially eliminated from the obtained image. When the depth of the roughening pattern 621 is about 50 μm, the surface reflectivity of the dummy area 620 can be controlled to be about 0.5% or less. For example, when the roughening pattern 621 has a depth equal to or greater than a specified depth, glare F may substantially not occur. For example, Fig.10d The image I captured by the refractive member 600 may not have the glare F.

[0163] Fig.12 is a perspective view showing a refractive member according to an embodiment of the present disclosure. Fig.12 In order to simplify the drawings, some reference numerals of the configuration of the refractive member are omitted, and can be referred to Figure 8a or Figure 8b Configurations corresponding to omitted reference numerals are described.

[0164] Reference Fig.12, the refractive member 700 may include a first surface 711 serving as an incident surface, second surfaces 712a and 712b serving as reflective surfaces, and a third surface 713 serving as an emission surface. In an embodiment, the dummy area 720 may be provided on at least a portion of an edge of the first surface 711, the second surfaces 712a, 712b, and / or the third surface 713. Although no reference numerals are assigned, the side portions (e.g., Figure 8a or Figure 8b The first side surface 601a and the second side surface 601b of the dummy region 720 may be substantially a portion of the dummy region 720. Similar to the above-described embodiment, the dummy region 720 may be directed to the image sensor (eg, Figure 7 The light of the image sensor 411 can pass through the portion of the refractive member 700 between the dummy regions 720 (eg, Figure 8a or Figure 8b The dummy region 720 may be formed by at least partially including a roughening pattern (e.g., Figure 8a or Figure 8b The roughened pattern 621 and / or the nanostructure satisfy the condition presented by the above equation. For example, light incident on the dummy area 720 may be scattered (or absorbed) by the roughened pattern and / or the nanostructure.

[0165] According to an embodiment, the first surface 711 is configured to face the external space or the lens (eg, Figure 7 The first lens group 421 or the second lens group 423 of the refractive member 700 is a surface of the first lens group 421 or the second lens group 423, and can be used as an incident surface in the refractive member 700. In an embodiment, light can be incident on the refractive member 700 from an external space or through an area shown as "IA" in the first surface 711 via a lens. In an embodiment, the light incident into the refractive member 700 through the first surface 711 can be sequentially reflected by the second surface indicated by "712a" (hereinafter referred to as "2-1 surface 712a") and the second surface indicated by "712b" (hereinafter referred to as "2-2 surface 712b"), and guided to the third surface 713. The third surface 713 is a surface disposed to face the external space or the image sensor 411 of the refractive member 700, and can be used as an exit surface in the refractive member 700. In an embodiment, light can be emitted from the inside of the refractive element 700 to the external space or the image sensor 411 through an area shown as "OA" in the third surface 713.

[0166] According to an embodiment, light reflected from the 2-1 surface 712a may be additionally reflected inside the refractive member 700 before reaching the 2-2 surface 712b. For example, light guided to the image sensor 411 is incident into the refractive member 700 through the incident area IA, and may be sequentially reflected by the 2-1 surface 712a, the first surface 711, the third surface 713, and / or the 2-2 surface 712b in the refractive element 700, and may then be emitted through the emission area OA. Such a guiding path or a reflection path may be implemented using an inclined angle (e.g., an angle A between the first surface 711 and the 2-1 surface 712a) formed by the first surface 711, the second surface 711b, and / or the third surface 713.

[0167] According to an embodiment, light incident to the dummy region 720 from the outside of the refractive member 700 or from the inside of the refractive member 700 may cause glare in the obtained image. For example, light focused on the image sensor 411 using the refractive member 700 is substantially guided through the region between the dummy regions 720 (e.g., Figure 8a or Figure 8b The dummy area 720 may be formed by a light-scattering (or light-absorbing) tendency (such as a roughening pattern (e.g., Figure 8a or Figure 8b The roughened pattern 621) and / or nanostructure) is used to suppress glare in the obtained image.

[0168] According to an embodiment, the refractive member 700 may be formed by coupling another refractive member having a polygonal column shape to Figure 8a or Figure 8b The refractive member 600 of the embodiment described above may be implemented by combining two or more different prisms. At least one of the two or more different prisms may include a dummy area of ​​the embodiment described above. For example, the refractive member according to an embodiment of the present disclosure may be implemented by combining two or more prisms, and at least one of the two or more prisms may include a dummy area to scatter or absorb light passing through or through the invalid area.

[0169] In the present disclosure (for example, Figures 2 to 4 ), a mobile phone has been described, but the present disclosure is not limited thereto. For example, the content of the present disclosure may be applied to a refractive member (eg, Figure 8a or Figure 8b According to an embodiment, the electronic device may be a wearable device, a digital camera, or a drone.

[0170] According to an embodiment of the present disclosure, the refractive member 600 of the present disclosure may include a roughening pattern 621 formed on a portion where light reflection may occur (e.g., the edge and / or side portion 601 of the refractive member 600). Due to the roughening pattern 621, glare in the image obtained by the refractive member 600 can be reduced. The roughening pattern 621 may be replaced with nanostructures provided in the dummy region 620. In an embodiment, the roughening pattern 621 and the nanostructures may be combined to satisfy at least one of the conditions presented by the above equations, thereby suppressing the generation of glare in the obtained image.

[0171] According to an embodiment of the present disclosure, a camera module (e.g., Figure 6 the camera module 500) may include a refractive member (e.g., Figure 6 the first refractive member 413, the second refractive member 415, and / or Figure 8a or Figure 8b the refractive member 600) configured to reflect or refract at least a portion of the light received by the camera module and an image sensor (e.g., Figure 6 the image sensor 411) configured to detect at least a portion of the light reflected or refracted by the refractive member. The refractive member may include an effective region (e.g., Figure 8a or Figure 8b the effective region 610) configured to provide a path for light and a dummy region (e.g., Figure 8a or Figure 8b the dummy region 620) provided at a portion of the edge of the effective region. According to certain embodiments, the dummy region is configured to scatter at least a portion of the light incident on the dummy region by satisfying the following equations 1, 2, 3, and 4 of the bidirectional scattering distribution function. [Equation 1] B - B0 may represent the difference in the scattering light angle in the sine direction. g may represent the average of the scattering light angle in the cosine direction and the incident light angle in the cosine direction. b may represent the BSDF value at the reference angle, S may represent the angle of the BSDF. l may represent the angle at which the reflected light starts to change with respect to the incident light. m may represent the cosine power. n may represent the angle power. [Equation 2] 0.05 < b < 0.5. [Equation 3] -6.0 < S < -0.05. [Equation 4] 0.02 < l < 1.9.

[0172] According to an embodiment, the dummy region may be set to satisfy at least one of the following equations 5 or 6. [Equation 5] 0 < m < 1.6. [Equation 6] 1.1 < n < 9.0

[0173] According to an embodiment, the dummy region may include at least one of nanostructures provided on the surface of the refractive member or a roughening pattern having a surface roughness of 1.0 μm or greater.

[0174] According to an embodiment, the refractive member may be an optical lens or a prism including a first surface (eg, Figure 8a or Figure 8b A first surface 600a) and a second surface (eg, Figure 8a or Figure 8b a second surface 600b).

[0175] According to an embodiment, the refractive member may include a side portion (eg, Figure 8a or Figure 8b The side portion may include a first side surface (eg, Figure 8a or Figure 8b a first side surface 601a) and a second side surface opposite to the first side surface (eg, Figure 8a or Figure 8b In an embodiment, at least a portion of the dummy region may be located on at least one of the first side surface or the second side surface.

[0176] According to an embodiment, the refractive member may include a paint immersed in the dummy area or a light blocking coating (eg, Figure 6 The light blocking member 425 is provided, and the immersed paint or light blocking coating is configured to absorb light incident to the dummy area. The refractive members 413 and 415 may be configured to satisfy the following equation 7. [Equation 7] Ria may represent a refractive index of a raw material of an immersion paint or light blocking coating (eg, the light blocking member 425 ). Rib may represent a refractive index of a raw material of the refractive members 413 and 415 .

[0177] According to an embodiment, the refractive member may include at least one of a mirror coating or a low-reflection coating disposed on the effective area.

[0178] According to an embodiment, the refractive member may include a chamfered area (eg, Fig. 9 The dummy area may be located in the chamfered area.

[0179] According to an embodiment, the refractive member may include glass, and the dummy region includes a roughened pattern.

[0180] According to an embodiment, the refractive member may include resin, and the dummy area includes a roughened pattern.

[0181] According to an embodiment, the image sensor may be located behind the refractive member.

[0182] According to an embodiment, the refractive member may be configured to reflect or refract light 1 to 5 times.

[0183] According to an embodiment, a first scattering coefficient of the dummy region may be lower than a second scattering coefficient of the active region.

[0184] According to an embodiment, a first surface reflectivity of the dummy region may be lower than a second surface reflectivity of the effective region. A first surface roughness of the dummy region may be higher than a second surface roughness of the effective region.

[0185] According to an embodiment, a surface reflectivity of the dummy area of ​​the refractive member may be 2.0% or less.

[0186] According to an embodiment of the present disclosure, an electronic device (eg, Figure 2 The electronic device 200 may include a housing (eg, Figure 2 housing 210) and a camera module (eg, Figure 6 The camera module 500 includes a camera module 500, at least a portion of which is disposed in the housing. The camera module may include at least one lens (e.g., Figure 6 The first lens 421a or 421b and / or Figure 6 The optical member (for example, the second lens 423a, 423b or 423c) of Figure 6 The first lens group 421 and / or the second lens group 423 of FIG. 421 , and a refractive member configured to reflect or refract at least a portion of light (eg, Figure 6 The first refractive member 413 or the second refractive member 415 and / or Figure 8a or Figure 8b 600) and an image sensor (eg, Figure 6 The refractive member may include an effective area configured to provide a path for light (eg, Figure 8a or Figure 8b The dummy area is configured to scatter at least a portion of light incident into the dummy area by satisfying the following equations 1, 2, 3, and 4 of a bidirectional scattering distribution function. [Equation 1] B - B0 can represent the angular difference of the scattered light in the sine direction. g can represent the average value of the angle of the scattered light in the cosine direction and the angle of the incident light in the cosine direction. b can represent the BSDF value at the reference angle, S can represent the angle of the BSDF. l can represent the angle at which the reflected light starts to change relative to the incident light. m can represent the cosine power. n can represent the angle power. [Equation 2] 0.05 < b < 0.5. [Equation 3] -6.0 < S < -0.05. [Equation 4] 0.02 < l < 1.9.

[0187] According to an embodiment, the dummy region may be set to satisfy at least one of the following Equation 5 or Equation 6. [Equation 5] 0 < m < 1.6. [Equation 6] 1.1 < n < 9.0.

[0188] According to an embodiment, the dummy region may include a roughened pattern having a depth of 1.0 μm or more, and the surface reflectance of the dummy region may be 2.0% or less.

[0189] According to an embodiment, the refractive member may include a first surface facing the optical member (e.g., Figure 8a or Figure 8b the first surface 600a), a second surface configured to reflect or refract at least a portion of the light passing through the first surface (e.g., Figure 8a or Figure 8b the second surface 600b), and a third surface for transmitting at least a portion of the light reflected or refracted by the second surface to the image sensor (e.g., Figure 8a or Figure 8b the third surface 600c). The refractive member may include a side portion at least partially defined by the first surface, the second surface, and the third surface (e.g., Figure 8a or Figure 8b the side portion 601). The side portion may include a first side surface (e.g., Figure 8a or Figure 8b the first side surface 601a) and a second side surface opposite to the first side surface (e.g., Figure 8a or Figure 8b the second side surface 601b). At least a portion of the dummy region may be located on the first side surface and the second side surface.

[0190] According to an embodiment, the refractive member may include a chamfered region located at the edge of the refractive member (e.g., Figure 8a or Figure 8b the chamfered region 630). At least a portion of the dummy region may be located in the chamfered region.

[0191] According to an embodiment of the present disclosure, a camera module (e.g., Figure 6 the camera module 500) may include at least one lens (e.g., Figure 6The first lens 421a or 421b and / or Figure 6 The optical member (for example, the second lens 423a, 423b or 423c) of Figure 6 The first lens group 421 and / or the second lens group 423 of FIG. 421 , and a refractive member configured to reflect or refract at least a portion of light (eg, Figure 6 The first refractive member 413 or the second refractive member 415 and / or Figure 8a or Figure 8b A refractive member 600) and an image sensor (eg, Figure 6 The refractive member may include an effective area (eg, Figure 8a or Figure 8b The effective area 610) and the dummy area (for example, Figure 8a or Figure 8b The virtual area 620), the effective area includes the incident surface (for example, Figure 8a or Figure 8b The incident surface 600a), the reflecting surface (for example, Figure 8a or Figure 8b The reflecting surface 600b) and the emitting surface (eg, Figure 8a or Figure 8b The dummy region includes an etched surface (e.g., Figure 8a or Figure 8b The surface reflectivity of the dummy area may be 2.0% or less, and the surface roughness of the corroded surface may be 1.0 μm or more. The surface reflectivity of the effective area may exceed 2.0%, and the surface roughness of the effective area may be less than 1.0 μm.

[0192] It is obvious to those skilled in the art that the camera module including a refractive member and the electronic device including a refractive member according to the present disclosure as described above are not limited to the above embodiments and the embodiments shown in the accompanying drawings, and various changes, modifications or alterations may be made thereto without departing from the scope of the present disclosure.

Claims

1. A camera module (500), comprising: a refractive member (413, 415, 600) configured to reflect or refract at least a portion of light received by the camera module; as well as an image sensor (411) configured to detect at least a portion of the light reflected or refracted by the refractive member, wherein the refractive member includes an effective area (610) configured to provide a path for light and a dummy area (600) disposed on a portion of an edge of the effective area, and wherein the dummy region is configured to scatter at least a portion of light incident on the dummy region by satisfying the following equations 1, 2, 3, and 4 of a bidirectional scattering distribution function, [Equation 1] Among them, B-B0 represents the angle difference of scattered light in the sine direction, g represents the average of the angle of scattered light in the cosine direction and the angle of incident light in the cosine direction, b represents the BSDF value at the reference angle, S represents the angle of BSDF, l represents the point where the reflected light starts to change relative to the incident light, m ​​represents the cosine power, and n represents the angle power. [Equation 2] 0.05<b<0.5 [Equation 3] -6.0<S<-0.05 [Equation 4] 0.02<l<1.9。 2. The camera module according to claim 1, wherein: The dummy area is set to satisfy the following equations 5 and 6, [Equation 5] 0<m<1.6 [Equation 6] 1.1<n<9.0。 3. The camera module according to any one of claims 1 to 2, wherein: The dummy region includes at least one of a nanostructure or a roughening pattern having a surface roughness of 1.0 μm or more disposed on a surface of the refractive member.

4. The camera module according to any one of claims 1 to 3, wherein: The refractive member is an optical lens or prism including a first surface (600a) configured to reflect, refract or transmit light and a second surface (600b) configured to reflect or refract at least a portion of the light passing through the first surface.

5. The camera module according to claim 4, in, The refractive member includes a side portion at least partially defined by the first surface and the second surface, wherein the side portion includes a first side surface (601a) and a second side surface (601b) opposite to the first side surface, and Wherein, the dummy area is at least partially located on the first side surface or the second side surface.

6. The camera module according to any one of claims 1 to 5, in, The refractive member includes a paint immersed in the dummy area or a light blocking coating (425) disposed on at least a portion of the dummy area, The immersed paint or the light blocking coating is configured to absorb at least a portion of light incident on the dummy area.

7. The camera module according to any one of claims 1 to 6, in, The refractive member includes at least one of a mirror coating or a low-reflection coating disposed on at least a portion of the effective area.

8. The camera module according to any one of claims 1 to 7, in, The refractive member includes a chamfered area (630) at an edge of the refractive member, and Wherein, at least a portion of the dummy area is located in the chamfered area.

9. The camera module according to any one of claims 1 to 8, in, The refractive member includes glass, and wherein the dummy area includes a roughened pattern.

10. The camera module according to any one of claims 1 to 8, wherein: The refractive member includes a resin, and Wherein, the dummy area includes a roughened pattern.

11. The camera module according to any one of claims 1 to 10, in, The refractive member is configured to reflect or refract light one to five times.

12. The camera module according to any one of claims 1 to 11, in, A first scattering coefficient of the dummy region is lower than a second scattering coefficient of the effective region.

13. The camera module according to any one of claims 1 to 12, in, The first surface reflectivity of the dummy area is lower than the second surface reflectivity of the effective area, and Wherein, the first surface roughness of the dummy area is greater than the second surface roughness of the effective area.

14. The camera module according to any one of claims 1 to 13, in, The surface reflectivity of the dummy area of ​​the refractive member is 2.0% or less.

15. An electronic device (101, 200), comprising: Housing (210); as well as The camera module (206, 212, 500) according to any one of claims 1 to 14, the camera module being at least partially arranged in the housing.

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