Camera module and electronic device comprising camera module
By omitting middle and ball guides, the camera module achieves size reduction and cost savings through a simplified structure with OIS magnetic bodies and coils, effectively stabilizing images and improving image quality.
Patent Information
- Application Number
- PCT/KR2025/000960
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-03-12
- Filing Date
- 2025-01-16
- Publication Date
- 2025-07-24
AI Technical Summary
Existing camera modules face challenges in reducing size and production costs while maintaining effective optical image stabilization due to the inclusion of middle guides and ball guides, which complicate assembly and increase part count.
The camera module design omits the middle guide and ball guide, allowing the carrier to rotate freely about multiple axes, and incorporates a simplified structure with OIS magnetic bodies and coils to stabilize images, reducing size and complexity.
This design reduces the camera module's size and production costs while enhancing image stabilization by simplifying the assembly process and minimizing driving errors, resulting in improved image quality.
Smart Images

Figure KR2025000960_24072025_PF_FP_ABST
Abstract
Description
Camera module and electronic device including camera module
[0001] Various embodiments disclosed in this document relate to a camera module and an electronic device including a camera module.
[0002] Various electronic devices, such as smart phones, tablet PCs, portable multimedia players (PMPs), personal digital assistants (PDAs), laptop personal computers, and wearable devices such as wrist watches and head-mounted displays (HMDs), contain cameras and can capture images using cameras.
[0003] As the number of users using electronic devices to take photos and videos increases, the performance of cameras embedded in these devices is also improving. For example, when taking images using a camera embedded in an electronic device, adjusting the focus of the subject or compensating for any camera shake (e.g., hand shake) that may occur during the capture may be necessary to obtain a clear image.
[0004] A camera module used in an electronic device may include an auto focus (AF) function that automatically adjusts the focus of a lens on a subject and / or an optical image stabilizer (OIS) function that compensates for shaking that occurs in the camera module when photographing a subject. The AF function and the optical image stabilizer function of the camera module may be driven based on an electromagnetic force using a magnet and a coil.
[0005] The above information may be provided as background art to aid in understanding the present disclosure. No claim or determination is made as to whether any of the above is applicable as prior art related to the present disclosure.
[0006] Camera modules can utilize light refraction to achieve high magnification. For example, the camera module may include a reflective element, such as a prism or mirror. Light incident on the reflective element can be reflected or refraction, causing its path to be bent and transmitted to the image sensor.
[0007] A camera module using a reflective member may have a form in which a ball guide part, a middle guide part, a reflective actuator, a lens driving part, and an image sensor are sequentially arranged inside the camera housing.
[0008] Meanwhile, the reflective actuator may include a reflective member and a carrier. The reflective member may be tilted relative to the image sensor to compensate for shaking of an image formed on the image sensor due to hand shake. For example, the carrier on which the reflective member is arranged may be rotated about one of a first axis (pitch axis) and a second axis (yaw axis or roll axis) relative to the image sensor via an actuator (e.g., a coil and a magnet). The middle guide may be rotated about the other of the first and second axes relative to the image sensor via the actuator. The carrier may be linked to the middle guide and rotate in the same direction as the rotational direction of the middle guide.
[0009] Meanwhile, the middle guide portion may be configured to guide the rotation of the carrier. For example, if the carrier is designed to rotate around a first axis, the middle guide may guide the rotation of the carrier so that it does not rotate around a second axis.
[0010] Similarly, the ball guide portion may be configured to guide the rotation of the middle guide portion. For example, if the middle guide is designed to rotate about a second axis different from the rotational axis of the carrier (e.g., the first axis), the rotation of the middle guide may be guided so as not to rotate about the first axis.
[0011] The structure of the camera module described above may include a middle guide that guides the rotation of the carrier and a ball guide that guides the rotation of the middle guide. Even if the arrangement of the carrier, middle guide, and ball guide is optimized, the omission of one of the above components is inevitable, which may limit the reduction in the size of the camera module. Furthermore, the more components that make up the camera module, the more complex the assembly process becomes, which may increase production costs.
[0012] The technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those with ordinary skill in the technical field to which this document pertains from the description below.
[0013] A camera module according to various embodiments disclosed in the present document may include a reflective member. In one embodiment, the camera module may include a carrier including a mounting portion on which the reflective member is disposed and a guide portion extending from the mounting portion in a direction opposite to the reflective member. In one embodiment, the camera module may include a receiving portion having a guide groove formed therein for accommodating at least a portion of the guide portion, and a camera housing on which the carrier is disposed. In one embodiment, the camera module may include a guide structure that contacts at least one of the guide groove and the guide portion at at least three points. In one embodiment, the camera module may include a first OIS magnetic body disposed on a first surface of the carrier. In one embodiment, the camera module may include a second OIS magnetic body disposed on a second surface of the carrier, the second surface being perpendicular to the first surface. In one embodiment, the camera module may include a first OIS coil disposed in the camera housing and facing the first OIS magnetic body. In one embodiment, the camera module may include a second OIS coil disposed in the camera housing and facing the second OIS magnetic body. In one embodiment, the camera module may include a lens driving unit through which light reflected from the reflective member is transmitted. In one embodiment, the camera module may include an image sensor through which light transmitted from the lens driving unit is incident.
[0014] According to one embodiment of the present disclosure, an electronic device including a camera module may include a reflective member. In addition, the electronic device may include a carrier including a mounting portion on which the reflective member is disposed and a guide portion extending from the mounting portion in a direction opposite to the reflective member. In addition, the electronic device may include a receiving portion having a guide groove formed to receive at least a portion of the guide portion, and a camera housing on which the carrier is disposed. In addition, the electronic device may include a guide structure that contacts at least one of the guide groove and the guide portion at at least three points. In addition, the electronic device may include a first OIS magnetic body disposed on a first surface of the carrier. In addition, the electronic device may include a second OIS magnetic body disposed on a second surface of the carrier perpendicular to the first surface. In addition, the electronic device may include a first OIS coil disposed on the camera housing and facing the first OIS magnetic body. In addition, the electronic device may include a second OIS coil disposed on the camera housing and facing the second OIS magnetic body. Additionally, the electronic device may include a lens driving unit through which light reflected from the reflective member is transmitted. Additionally, the electronic device may include an image sensor through which light transmitted from the lens driving unit is incident.
[0015] According to one embodiment disclosed in the present document, a structure capable of implementing an image stabilizer (e.g., an optical image stabilizer (OIS)) function may be included. The camera module of the present disclosure may omit a middle guide for guiding rotation of a carrier and a ball guide for guiding rotation of the middle guide. In one embodiment, the carrier may be partially coupled to a receiving portion formed in the camera module to secure degrees of freedom for rotation about a first axis (e.g., a pitch axis and / or a Y axis in FIG. 4C), a second axis (e.g., a yaw axis and / or an X-axis yaw in FIG. 4C), and a third axis (e.g., a roll axis and / or a Z axis in FIG. 4C).
[0016] Additionally, according to one embodiment of the present disclosure, the size of the camera module can be reduced by omitting the middle guide and ball guide portion. Furthermore, the production cost can be reduced by simplifying the production process due to the reduction in parts used in the camera module.
[0017] Additionally, according to one embodiment of the present disclosure, the center of the reflective surface of a reflective member disposed on a carrier may coincide with the center of rotation of the reflective member. In this case, the driving error of an optical image stabilizer (OIS) function for image shake correction may be reduced.
[0018] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.
[0019] In connection with the description of the drawings, the same or similar reference numerals may be used for the same or similar components.
[0020] FIG. 1 is a block diagram of an electronic device within a network environment according to various embodiments of the present disclosure.
[0021] FIG. 2 is a block diagram illustrating a camera module according to various embodiments.
[0022] FIGS. 3A and 3B are drawings of a camera module disposed in an electronic device according to one embodiment of the present disclosure.
[0023] Fig. 4a is an assembly diagram of the camera module illustrated in Fig. 3a.
[0024] FIG. 4b is an assembly drawing of a camera module with a first lens module added facing the incident surface of the reflective member in the camera module of FIG. 4a.
[0025] FIG. 4c is a drawing illustrating the arrangement relationship of a reflective actuator, a first OIS actuator, a second OIS actuator, and a third OIS actuator according to one embodiment of the present disclosure.
[0026] FIGS. 5A and 5B are assembly drawings of a flexible printed circuit board, a camera housing, and a reflective actuator according to one embodiment of the present disclosure.
[0027] FIG. 6A is a rear perspective view of a reflective actuator according to one embodiment of the present disclosure.
[0028] FIG. 6b is a front perspective view of a reflective actuator according to one embodiment of the present disclosure.
[0029] FIG. 6c is a front perspective view of a camera housing according to one embodiment of the present disclosure.
[0030] FIGS. 7A to 7C are drawings of a first suction magnet and a second suction magnet according to one embodiment of the present disclosure.
[0031] Figure 8 is an enlarged view of the receiving portion of the camera housing illustrated in Figure 6c.
[0032] FIG. 9 is an assembly diagram of a reflective actuator according to one embodiment of the present disclosure.
[0033] FIG. 10A is a drawing illustrating a configuration and an OIS ball located on the back of a reflective actuator according to one embodiment of the present disclosure.
[0034] FIG. 10b is a drawing of a state in which a first ball cover is coupled to a guide portion of a carrier according to one embodiment of the present disclosure.
[0035] FIG. 11A is a perspective view of a first ball cover according to one embodiment of the present disclosure.
[0036] FIG. 11b is a front view of a first ball cover according to one embodiment of the present disclosure.
[0037] FIGS. 11C and 11D are side views of a first ball cover according to one embodiment of the present disclosure.
[0038] FIG. 12A is a drawing of a guide portion of a carrier fastened to a receiving portion of a camera housing according to one embodiment of the present disclosure.
[0039] Figure 12b is an enlarged drawing of the arrangement relationship of the first ball cover, OIS ball, and guide part illustrated in Figure 12a.
[0040] FIG. 13 is a drawing showing a lens module arranged on an incident surface and an exit surface of a reflective member according to one embodiment of the present disclosure.
[0041] FIGS. 14a and 14b are drawings showing a state in which a receiving groove for placing an OIS ball is formed in a receiving portion of a camera housing according to one embodiment of the present disclosure, and a second ball cover is coupled to the receiving portion.
[0042] FIG. 15A is an enlarged view of a receiving groove formed in a receiving portion of a camera housing according to one embodiment of the present disclosure.
[0043] FIG. 15b is a drawing of a second ball cover coupled to a receiving portion of a camera housing according to one embodiment of the present disclosure.
[0044] FIG. 15c is a cross-sectional view of a second ball cover coupled to a receiving portion of a camera housing according to one embodiment of the present disclosure.
[0045] Figures 16a and 16b are drawings explaining the relationship between a magnetic flux detection sensor placed inside an OIS coil and an OIS magnetic body placed on a carrier.
[0046] FIGS. 17A and 17B are drawings illustrating a relationship between a plurality of metal plates arranged to face different poles of a second OIS magnetic body arranged on a carrier and a second OIS magnetic body, according to one embodiment of the present disclosure.
[0047] FIGS. 18A and 18B are drawings illustrating a relationship between a plurality of metal plates arranged to face each other with respect to different poles of a third OIS magnetic body arranged on a carrier and a third OIS magnetic body, according to one embodiment of the present disclosure.
[0048] FIGS. 19A and 19B are drawings of a second OIS actuator configured to rotate the carrier about an axis inclined with respect to a support surface of the camera housing, according to one embodiment of the present disclosure.
[0049] In the following description, various embodiments of this document are described with reference to the attached drawings. It should be understood that the various embodiments of this document and the terminology used herein are not intended to limit the technical features described herein to specific embodiments, but rather encompass various modifications, equivalents, or alternatives of the embodiments.
[0050] In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of the noun corresponding to an item may include one or more of said items, unless the context clearly indicates otherwise.
[0051] In this document, the phrases "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" can each include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish the corresponding component from other corresponding components and do not limit the corresponding components in any other respect (e.g., importance or order). When a component (e.g., a first) is referred to as "coupled" or "connected" to another (e.g., a second) component, with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.
[0052] FIG. 1 is a block diagram of an electronic device (101) within a network environment (100), according to one embodiment. Referring to FIG. 1, in the network environment (100), the electronic device (101) may communicate with the electronic device (102) via a first network (198) (e.g., a short-range wireless communication network), or may communicate with the electronic device (104) or a server (108) via a second network (199) (e.g., a long-range wireless communication network). In one embodiment, the electronic device (101) may communicate with the electronic device (104) via the server (108). According to one embodiment, the electronic device (101) may include a processor (120), a memory (130), an input module (150), an audio 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 subscriber identification module (196), or an antenna module (197). In some embodiments, the electronic device (101) may omit at least one of these components (e.g., the connection terminal (178)), or may have one or more other components added. In some embodiments, some of these components (e.g., the sensor module (176), the camera module (180), or the antenna module (197)) may be integrated into one component (e.g., the display module (160)).
[0053] The processor (120) may, for example, execute software (e.g., a program (140)) to control at least one other component (e.g., a hardware or software component) of the electronic device (101) connected to the processor (120) and perform various data processing or operations. According to one embodiment, as at least a part of the data processing or operations, the processor (120) may store commands or data received from other components (e.g., a sensor module (176) or a communication module (190)) in a volatile memory (132), process the commands or data stored in the volatile memory (132), and store result data in a non-volatile memory (134). According to one embodiment, the processor (120) may include a main processor (121) (e.g., a central processing unit or an application processor) or an auxiliary processor (123) (e.g., a graphics processing unit, a neural processing unit (NPU), an image signal processor, a sensor hub processor, or a communication processor) that can operate independently or together with the main processor (121). For example, when the electronic device (101) includes the main processor (121) and the auxiliary processor (123), the auxiliary processor (123) may be configured to use less power than the main processor (121) or to be specialized for a given function. The auxiliary processor (123) may be implemented separately from the main processor (121) or as a part thereof.
[0054] The auxiliary processor (123) may control at least a portion of functions or states associated with at least one component (e.g., a display module (160), a sensor module (176), or a communication module (190)) of the electronic device (101), for example, on behalf of the main processor (121) while the main processor (121) is in an inactive (e.g., sleep) state, or together with the main processor (121) while the main processor (121) is in an active (e.g., application execution) state. In one embodiment, the auxiliary processor (123) (e.g., an image signal processor or a communication processor) may be implemented as a part of another functionally related component (e.g., a camera module (180) or a communication module (190)). In one embodiment, the auxiliary processor (123) (e.g., a neural network processing unit) may include a hardware structure specialized for processing artificial intelligence models. The artificial intelligence models may be generated through machine learning. This learning can be performed, for example, in the electronic device (101) itself where artificial intelligence is performed, or can be performed through a separate server (e.g., server (108)). The learning algorithm can include, for example, supervised learning, unsupervised learning, semi-supervised learning, or reinforcement learning, but is not limited to the examples described above. The artificial intelligence model can include multiple artificial neural network layers.The artificial neural network may be one of a deep neural network (DNN), a convolutional neural network (CNN), a recurrent neural network (RNN), a restricted Boltzmann machine (RBM), a deep belief network (DBN), a bidirectional recurrent deep neural network (BRDNN), a deep Q-network, or a combination of two or more of the above, but is not limited to the examples described above. In addition to, or alternatively to, a hardware structure, an artificial intelligence model may include a software structure.
[0055] The memory (130) can store various data used by at least one component (e.g., processor (120) or sensor module (176)) of the electronic device (101). The data can include, for example, software (e.g., program (140)) and input data or output data for commands related thereto. The memory (130) can include volatile memory (132) or non-volatile memory (134).
[0056] The program (140) may be stored as software in the memory (130) and may include, for example, an operating system (142), middleware (144), or an application (146).
[0057] The input module (150) can receive commands or data to be used in a component of the electronic device (101) (e.g., a processor (120)) from an external source (e.g., a user) of the electronic device (101). The input module (150) can include, for example, a microphone, a mouse, a keyboard, a key (e.g., a button), or a digital pen (e.g., a stylus pen).
[0058] The audio output module (155) can output audio signals to the outside of the electronic device (101). The audio output module (155) can include, for example, a speaker or a receiver. The speaker can be used for general purposes, such as multimedia playback or recording playback. The receiver can be used to receive incoming calls. In one embodiment, the receiver can be implemented separately from the speaker or as part of the speaker.
[0059] The display module (160) can visually provide information to an external party (e.g., a user) of the electronic device (101). The display module (160) may include, for example, a display, a holographic device, or a projector and a control circuit for controlling the device. According to one embodiment, the display module (160) may include a touch sensor configured to detect a touch, or a pressure sensor configured to measure the intensity of a force generated by the touch.
[0060] The audio module (170) can convert sound into an electrical signal, or vice versa, convert an electrical signal into sound. According to one embodiment, the audio module (170) can acquire sound through the input module (150), output sound through the sound output module (155), or an external electronic device (e.g., electronic device (102)) (e.g., speaker or headphone) directly or wirelessly connected to the electronic device (101).
[0061] The sensor module (176) can detect the operating status (e.g., power or temperature) of the electronic device (101) or the external environmental status (e.g., user status) and generate an electrical signal or data value corresponding to the detected status. According to one embodiment, the sensor module (176) can include, for example, a gesture sensor, a gyro sensor, a barometric pressure sensor, a magnetic sensor, an acceleration sensor, a grip sensor, a proximity sensor, a color sensor, an IR (infrared) sensor, a biometric sensor, a temperature sensor, a humidity sensor, or an illuminance sensor.
[0062] The interface (177) may support one or more designated protocols that may be used to directly or wirelessly connect the electronic device (101) with an external electronic device (e.g., the electronic device (102)). In one embodiment, the interface (177) may include, for example, a high definition multimedia interface (HDMI), a universal serial bus (USB) interface, an SD card interface, or an audio interface.
[0063] The connection terminal (178) may include a connector through which the electronic device (101) may be physically connected to an external electronic device (e.g., electronic device (102)). According to one embodiment, the connection terminal (178) may include, for example, an HDMI connector, a USB connector, an SD card connector, or an audio connector (e.g., a headphone connector).
[0064] The haptic module (179) can convert electrical signals into mechanical stimuli (e.g., vibration or movement) or electrical stimuli that a user can perceive through tactile or kinesthetic sensations. According to one embodiment, the haptic module (179) can include, for example, a motor, a piezoelectric element, or an electrical stimulation device.
[0065] The camera module (180) can capture still images and videos. According to one embodiment, the camera module (180) may include one or more lenses, image sensors, image signal processors, or flashes.
[0066] The power management module (188) can manage power supplied to the electronic device (101). According to one embodiment, the power management module (188) can be implemented as, for example, at least a part of a power management integrated circuit (PMIC).
[0067] A battery (189) may power at least one component of the electronic device (101). In one embodiment, the battery (189) may include, for example, a non-rechargeable primary battery, a rechargeable secondary battery, or a fuel cell.
[0068] The communication module (190) may support the establishment of 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 the performance of communication through the established communication channel. The communication module (190) may operate independently from the processor (120) (e.g., application processor) and may include one or more communication processors that support direct (e.g., wired) communication or wireless communication. According to one embodiment, the communication module (190) may include a wireless communication module (192) (e.g., 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 module). Among these communication modules, the corresponding communication module can communicate with an external electronic device (104) via a first network (198) (e.g., a short-range communication network such as Bluetooth, wireless fidelity (WiFi) direct, or infrared data association (IrDA)) or a second network (199) (e.g., a long-range communication network such as a legacy cellular network, a 5G network, a next-generation communication network, the Internet, or a computer network (e.g., a LAN or WAN)). These various types of communication modules can be integrated into a single component (e.g., a single chip) or implemented as multiple separate components (e.g., multiple chips). The wireless communication module (192) can verify or authenticate the electronic device (101) within a communication network such as the first network (198) or the second network (199) by using subscriber information (e.g., an international mobile subscriber identity (IMSI)) stored in the subscriber identification module (196).
[0069] The wireless communication module (192) can support 5G networks and next-generation communication technologies following the 4G network, such as NR access technology (new radio access technology). The NR access technology can support high-speed transmission of high-capacity data (eMBB (enhanced mobile broadband)), minimization of terminal power and connection of multiple terminals (mMTC (massive machine type communications)), or high reliability and low latency (URLLC (ultra-reliable and low-latency communications)). The wireless communication module (192) can support, for example, a high-frequency band (e.g., mmWave band) to achieve a high data transmission rate. The wireless communication module (192) can support various technologies for securing performance in a high-frequency band, such as beamforming, massive multiple-input and multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, analog beam-forming, or large scale antenna. The wireless communication module (192) can support various requirements specified in the electronic device (101), an external electronic device (e.g., the electronic device (104)), or a network system (e.g., the second network (199)). According to one embodiment, the wireless communication module (192) can support a peak data rate (e.g., 20 Gbps or more) for eMBB realization, a loss coverage (e.g., 164 dB or less) for mMTC realization, or a U-plane latency (e.g., 0.5 ms or less for downlink (DL) and uplink (UL), or 1 ms or less for round trip) for URLLC realization.
[0070] The antenna module (197) can transmit or receive signals or power to or from an external device (e.g., an external electronic device). In one embodiment, the antenna module (197) may include an antenna including a radiator formed of a conductor or a conductive pattern formed on a substrate (e.g., a PCB). In one embodiment, the antenna module (197) may include a plurality of antennas (e.g., an array antenna). In this case, at least one antenna suitable for a communication method used in a communication network, such as the first network (198) or the second network (199), may be selected from the plurality of antennas, for example, by the communication module (190). A signal or power may be transmitted or received between the communication module (190) and an external electronic device via the at least one selected antenna. In some embodiments, in addition to the radiator, another component (e.g., a radio frequency integrated circuit (RFIC)) may be additionally formed as a part of the antenna module (197).
[0071] In one embodiment, the antenna module (197) may form a mmWave antenna module. In one embodiment, the mmWave antenna module may include a printed circuit board, an RFIC disposed on or adjacent a first side (e.g., a bottom side) of the printed circuit board and capable of supporting a designated high-frequency band (e.g., a mmWave band), and a plurality of antennas (e.g., an array antenna) disposed on or adjacent a second side (e.g., a top side or a side side) of the printed circuit board and capable of transmitting or receiving signals in the designated high-frequency band.
[0072] At least some of the above components can be interconnected and exchange signals (e.g., commands or data) with each other via a communication method between peripheral devices (e.g., a bus, GPIO (general purpose input and output), SPI (serial peripheral interface), or MIPI (mobile industry processor interface)).
[0073] According to one embodiment, commands or data may be transmitted or received between the electronic device (101) and an external electronic device (104) via a server (108) connected to a second network (199). Each of the external electronic devices (102 or 104) may be the same or a different type of device as the electronic device (101). According to one embodiment, all or part of the operations executed in the electronic device (101) may be executed in one or more of the external electronic devices (102, 104, or 108). For example, when the electronic device (101) is to perform a certain function or service automatically or in response to a request from a user or another device, the electronic device (101) may, instead of or in addition to executing the function or service itself, request one or more external electronic devices to perform the function or at least a part of the service. One or more external electronic devices that receive the request may execute at least a portion of the requested function or service, or an additional function or service related to the request, and transmit the result of the execution to the electronic device (101). The electronic device (101) may process the result as is or additionally and provide it as at least a portion of a response to the request. For this purpose, cloud computing, distributed computing, mobile edge computing (MEC), or client-server computing technology may be used, for example. The electronic device (101) may provide an ultra-low latency service by using distributed computing or mobile edge computing, for example. In one embodiment, the external electronic device (104) may include an Internet of Things (IoT) device. The server (108) may be an intelligent server utilizing machine learning and / or a neural network. According to one embodiment, the external electronic device (104) or the server (108) may be included in the second network (199).The electronic device (101) can be applied to intelligent services (e.g., smart home, smart city, smart car, or healthcare) based on 5G communication technology and IoT-related technology.
[0074] FIG. 2 is a block diagram illustrating a camera module (180) according to various embodiments. Referring to FIG. 2, the camera module (180) may include a lens assembly (210), a flash (220), an image sensor (230), an image stabilizer (240), a memory (250) (e.g., a buffer memory), or an image signal processor (260). The lens assembly (210) may collect light emitted from a subject that is a target of image capturing. The lens assembly (210) may include one or more lenses. According to one embodiment, the camera module (180) may include a plurality of lens assemblies (210). In this case, the camera module (180) may form, for example, a dual camera, a 360-degree camera, or a spherical camera. Some of the plurality of lens assemblies (210) may have the same lens properties (e.g., angle of view, focal length, autofocus, f-number, or optical zoom), or at least one lens assembly may have one or more lens properties that are different from the lens properties of the other lens assemblies. A lens assembly (210) may include, for example, a wide-angle lens or a telephoto lens.
[0075] The flash (220) can emit light used to enhance light emitted or reflected from a subject. According to one embodiment, the flash (220) can include one or more light-emitting diodes (e.g., red-green-blue (RGB) LED, white LED, infrared LED, or ultraviolet LED), or a xenon lamp. The image sensor (230) can acquire an image corresponding to the subject by converting light emitted or reflected from the subject and transmitted through the lens assembly (210) into an electrical signal. According to one embodiment, the image sensor (230) can include one image sensor selected from among image sensors having different properties, such as an RGB sensor, a black and white (BW) sensor, an IR sensor, or a UV sensor, a plurality of image sensors having the same property, or a plurality of image sensors having different properties. Each image sensor included in the image sensor (230) can be implemented using, for example, a CCD (charged coupled device) sensor or a CMOS (complementary metal oxide semiconductor) sensor.
[0076] The image stabilizer (240) can move at least one lens or image sensor (230) included in the lens assembly (210) in a specific direction or control the operating characteristics of the image sensor (230) (e.g., adjusting the read-out timing, etc.) in response to the movement of the camera module (180) or the electronic device (101) including the same. This allows at least a portion of the image shake caused by the movement to be captured to be compensated for. According to one embodiment, the image stabilizer (240) can detect such movement of the camera module (180) or the electronic device (101) using a gyro sensor (not shown) or an acceleration sensor (not shown) disposed inside or outside the camera module (180). The memory (250) can at least temporarily store at least a portion of the image acquired through the image sensor (230) for the next image processing task. For example, when image acquisition is delayed due to a shutter, or when multiple images are acquired at high speed, the acquired original image (e.g., a Bayer-patterned image or a high-resolution image) is stored in the memory (250), and a corresponding copy image (e.g., a low-resolution image) can be previewed through the display module (160). Thereafter, when a specified condition is satisfied (e.g., a user input or a system command), at least a portion of the original image stored in the memory (250) can be acquired and processed, for example, by the image signal processor (260). According to one embodiment, the memory (250) may be configured as at least a portion of the memory (130), or as a separate memory that operates independently therefrom.
[0077] The image signal processor (260) can perform one or more image processing operations on an image acquired through an image sensor (230) or an image stored in a memory (250). The one or more image processing operations may include, for example, depth map generation, 3D modeling, panorama generation, feature extraction, image synthesis, or image compensation (e.g., noise reduction, resolution adjustment, brightness adjustment, blurring, sharpening, or softening). Additionally or alternatively, the image signal processor (260) may perform control (e.g., exposure time control, read-out timing control, etc.) for at least one of the components included in the camera module (180) (e.g., image sensor (230)). An image processed by the image signal processor (260) may be stored back in the memory (250) for further processing or provided to an external component of the camera module (180) (e.g., memory (130), display module (160), electronic device (102), electronic device (104), or server (108)). According to one embodiment, the image signal processor (260) may include at least one of the processors (120). It may be configured as a separate processor that is configured as a part of the processor (120) or operates independently of the processor (120). If the image signal processor (260) is configured as a separate processor from the processor (120), at least one image processed by the image signal processor (260) may be displayed through the display module (160) as is or after undergoing additional image processing by the processor (120).
[0078] According to one embodiment, the electronic device (101) may include a plurality of camera modules (180), each having different properties (e.g., angle of view) or functions. In this case, for example, the plurality of camera modules (180) may include at least one of a wide-angle camera, a telephoto camera, or an IR Camera (time of flight camera, structured light camera). For example, a plurality of camera modules including lenses having different angles of view are configured, and the electronic device may be controlled to change the angle of view variably according to a user's selection. According to one embodiment, at least one of the plurality of camera modules (180) may be a front camera, and at least another may be a rear camera.
[0079] FIGS. 3A and 3B are drawings of a camera module arranged in an electronic device according to an embodiment of the present disclosure. FIG. 4A is an assembly diagram of the camera module illustrated in FIG. 3A. FIG. 4B is an assembly diagram of a camera module to which a first lens module facing an incident surface of a reflective member is added to the camera module of FIG. 4A. FIG. 4C is a drawing explaining the arrangement relationship of a reflective actuator, a first OIS actuator, a second OIS actuator, and a third OIS actuator according to an embodiment of the present disclosure.
[0080] According to one embodiment, the following description may be a description of a rear camera (e.g., a camera module (300) (e.g., a camera module (180) of FIG. 1)) of an electronic device (200) (e.g., an electronic device (101) of FIG. 1) illustrated in FIG. 3A.
[0081] According to one embodiment, as illustrated in FIGS. 3A, 3B, 4A, 4B, and 4C, the camera module (300) may include a camera cover (301), a camera housing (320), a reflective actuator including a reflective member (R) and a carrier (340), a lens driving unit (310), a flexible printed circuit board (460), an image sensor (370) (e.g., the image sensor (230) of FIG. 2), a first OIS actuator (410), a second OIS actuator (420), a third OIS actuator (430), a first AF actuator (440), and / or a second AF actuator (450). At least one of the above-described configurations may be omitted or at least one configuration may be added. For example, referring to FIG. 4b, the camera module (300) may include a lens housing (313) positioned on the carrier (340) so as to face the incident surface (S1) of the reflective member (R) and a first lens module (311) coupled with the lens housing (313). In this case, light incident from outside the electronic device (200) onto the camera module (300) may be introduced into the reflective member (R) through the first lens module (311). In one embodiment, referring to FIG. 4c, the camera module (300) may include a third OIS actuator (430).
[0082] In one embodiment, the reflective actuator, the lens driver (310), and the image sensor (370) may be disposed in the camera housing (320). In one embodiment, referring to FIG. 3B, the reflective actuator, the lens driver (310), and the image sensor (370) may be sequentially disposed within the camera housing (320). For example, the reflective actuator, the lens driver (310), and the image sensor (370) may be disposed side by side along an axis (e.g., the X-axis, the optical axis OA of FIG. 3B, the exit optical axis C2 of FIG. 12A) perpendicular to the exit surface S2 of the reflective member R (e.g., the exit surface S2 of FIG. 12A).
[0083] In one embodiment, the reflective actuator may be positioned in the camera housing (320) to be rotatable (or movable) relative to the image sensor (370). In one embodiment, referring to FIG. 3B, the lens driver (310) may be positioned in the camera housing (320) to be movable in the direction of the optical axis (OA) of the lens (e.g., the X-axis direction of FIG. 3B and / or the OA of FIG. 3B) relative to the image sensor (370).
[0084] In one embodiment, referring to FIGS. 4A and 4B, the camera housing (320) may have an open upper surface (e.g., in the +Z direction based on FIG. 4A) so that a reflective actuator and a lens driver (310) may be disposed thereon. In one embodiment, the camera housing (320) may include a first portion (321), a fourth portion (324) substantially parallel to the first portion (321), a second portion (322) connecting the first portion (321) and the fourth portion (324) and being substantially perpendicular to the first portion (321) and the fourth portion (324), and a third portion (323) substantially parallel to the second portion (322). In one embodiment, a first OIS coil (412) of a first OIS actuator (410) may be disposed in the first portion (321). In one embodiment, the second portion (322) may be provided with a first AF coil (442) of the first AF actuator (440) and / or a second OIS coil (422) of the second OIS actuator (420). In one embodiment, the third portion (323) may be provided with a second AF coil (452) of the second AF actuator (450) and / or a third OIS coil (432) of the third OIS actuator (430). In one embodiment, the fourth portion (324) may be provided with a portion of an image sensor (370) of the camera module (300).
[0085] In one embodiment, referring to FIG. 3B, the image sensor (370) may be coupled to the camera housing (320) such that its position relative to the camera housing (320) is fixed. For example, the image sensor (370) may be disposed in the fourth portion (324) of the camera housing (320). In one embodiment, the image sensor (370) may include a substrate (380) and a connector (381). The image sensor (380) may be connected to a printed circuit board (not shown) of the electronic device (200) via the connector (381).
[0086] In one embodiment, as illustrated in FIGS. 3A, 4A, and 4B, the camera cover (301) may be positioned outside the camera housing (320) and coupled or fitted to the camera housing (320). In one embodiment, the camera cover (301) may be positioned at the outermost portion of the camera module (300) and may enclose the reflective actuator, the lens driver (310), and the flexible printed circuit board (460). In one embodiment, the camera cover (301) may include an opening (3011) formed such that a portion of the reflective member (R) may be visually exposed to the camera module (300).
[0087] According to one embodiment, as illustrated in FIGS. 3B, 4A, and 4B, the lens driving unit (310) may include at least one lens (3101), a first AF magnetic body (441) (e.g., a magnet), and a second AF magnetic body (451) (e.g., a magnet). In one embodiment, the lens (3101) may be configured to transmit light emitted from an exit surface (e.g., an exit surface (S2) of FIG. 9) of the reflective member (R) through an incident surface (S1) of the reflective member (R) to the image sensor (370). In one embodiment, the first AF magnetic body (441) may face a first AF coil (442) disposed in a second portion (322) of the camera housing (320). In one embodiment, the second AF magnet (451) may face the second AF coil (452) disposed in the third portion (323) of the camera housing (320).
[0088] In one embodiment, the camera module (300) may perform an AF (auto focus) function to automatically adjust the focus of the lens (3101) on a subject outside the electronic device (200) by moving the lens driver (310) relative to the image sensor (370) under the control of the processor (120). In one embodiment, the lens driver (310) may move along the optical axis (OA) (e.g., the X-axis direction of FIG. 3B) of the lens (3101) relative to the image sensor (370) via at least one of the first AF actuator (440) and the second AF actuator (450).
[0089] In one embodiment, referring to FIGS. 3B, 4A, and 4B, the first AF actuator (440) may include a first AF magnetic body (441) (e.g., a magnet), and a first AF coil (442) disposed in a second portion (322) of the camera housing (320) such that at least a portion thereof faces the first AF magnetic body (441) and is connected to a flexible printed circuit board (460). In one embodiment, the second AF actuator (450) may include a second AF magnetic body (451) (e.g., a magnet), and a second AF coil (452) disposed in a third portion (323) substantially parallel to the first portion (321) of the camera housing (320) such that at least a portion thereof faces the second AF magnetic body (451), and is connected to a flexible printed circuit board (460). In addition, the first AF actuator (440) and the second AF actuator (450) can be changed to various configurations that can move the lens driving unit (310) in the direction of the optical axis (OA) of the lens (3101). In one embodiment, the first AF coil (442) and the second AF coil (452) can generate a magnetic force as current is applied through the flexible printed circuit board (460). The lens driving unit (310) can automatically adjust the focus of the lens (3101) on the subject by moving relative to the image sensor (370) in the X-axis direction (e.g., the direction of the optical axis (OA) of FIG. 3B)) through the electromagnetic force acting between the first AF magnetic body (441) and the first AF coil (442) and / or the electromagnetic force acting between the second AF magnetic body (451) and the second AF coil (452).
[0090] According to one embodiment, as illustrated in FIGS. 4A and 4B, the lens driving unit (310) can move in the X-axis direction with respect to the camera housing (320) via an AF ball (b2), which is a bearing ball. In one embodiment, the AF ball (b2) can be disposed in a ball guide formed to extend in the X-axis direction (e.g., the X-axis of FIG. 3B) from the camera housing (320). The AF ball (b2) can be arranged in the X-axis direction in the ball guide to guide the movement of the lens driving unit (310) with respect to the camera housing (320).
[0091] According to one embodiment, as illustrated in FIGS. 3A, 3B, 4A, and 4B, the camera module (300) may utilize the refraction of light to enable high magnification. In one embodiment, light incident on the camera module (300) may be refracted or reflected by a reflective actuator to change the path of the light, and then may pass through a lens driving unit (310) to enter the image sensor (370).
[0092] According to one embodiment, as illustrated in FIGS. 3B, 4A, and 4B, the reflective actuator may include a reflective member (R) and a carrier (340) on which the reflective member (R) is mounted. In one embodiment, the reflective member (R) may include a configuration that refracts or reflects the path of light, such as a prism or a mirror.
[0093] In one embodiment, referring to FIGS. 5B, 9, and 12A, which will be described later, the reflective member (R) may include an incident surface (S1) on which light is incident, a reflective surface (S3) on which light is reflected or refracted (e.g., the reflective surface (S3) of FIG. 12A), and an exit surface (S2) on which the incident light is emitted. In one embodiment, the incident surface (S1) and the exit surface (S2) may be substantially perpendicular. In one embodiment, the reflective surface (S3) may be a surface that connects the incident surface (S1) and the exit surface (S2) and at least a portion of which faces a first inclined surface (3411) of a mounting portion (e.g., the mounting portion (341) of FIG. 9) of the carrier (340). In one embodiment, light incident on the incident surface (S1) of the reflective member (R) may be reflected by the reflective surface (S3), pass through the exit surface (S2), and enter the image sensor (370) through the lens (3101) of the lens driving unit (310).
[0094] In one embodiment, referring to FIGS. 5B and 6A described below, the carrier (340) may include a guide portion (342) that is at least partially fastened to a receiving portion (330) formed in the camera housing (320). In one embodiment, the carrier (340) may rotate about a first axis (e.g., pitch axis and / or Y axis of FIG. 4C), a second axis (e.g., yaw axis and / or X axis of FIG. 4C) and / or a third axis (e.g., roll axis and / or Z axis of FIG. 4C) relative to the camera housing (320) with respect to the receiving portion (330) to function as an optical image stabilizer (OIS) that corrects shaking occurring in the camera module (300).
[0095] According to one embodiment, as illustrated in FIGS. 4A, 4B, and 4C, the camera module (300) may control the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) via the processor (120) to compensate for image shake (e.g., perform an optical image stabilizer (OIS)). In one embodiment, the first OIS actuator (410) may include a first OIS magnetic body (411) (e.g., a magnet) disposed on the carrier (340) and facing the first portion (321) of the camera housing (320), and a first OIS coil (412) disposed on the first portion (321) of the camera housing (320) such that at least a portion thereof faces the first OIS magnetic body (411) and is connected to a flexible printed circuit board (460). In one embodiment, the second OIS actuator (420) may include a second OIS magnetic body (421) (e.g., a magnet) disposed on the carrier (340) and facing the second portion (322) of the camera housing (320), and a second OIS coil (422) disposed on the second portion (322) of the camera housing (320) such that at least a portion thereof faces the second OIS magnetic body (421) and is connected to a flexible printed circuit board (460). In one embodiment, the third OIS actuator (430) may include a third OIS magnetic body (431) (e.g., a magnet) disposed on the carrier (340) and facing the third portion (323) of the camera housing (320) such that at least a portion thereof faces the third OIS magnetic body (431) and is connected to the third portion (323) of the camera housing (320). It may include a third OIS coil (432) that is arranged and connected to a flexible printed circuit board (460). In addition, the first OIS actuator (410), the second OIS actuator (420), and the third OIS actuator (430) may be changed into various configurations that can rotate the carrier (340) relative to the image sensor (370).
[0096] According to one embodiment, the processor (120) may rotate the carrier (340) about a first axis (e.g., the first axis in FIG. 4C), a second axis (e.g., the second axis in FIG. 4C), and / or a third axis (e.g., the third axis in FIG. 4C) relative to the image sensor (370) in a direction that offsets a movement (e.g., shaking and / or hand tremors) caused by a user during a photographing process of the electronic device (200) through the camera module (300). The processor (120) of the electronic device (200) may obtain movement information of the electronic device (200) detected by a sensor module (e.g., the sensor module (176) of FIG. 1) of the electronic device (200), and may operate the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) based on the movement information. For example, based on the movement information of the electronic device (200), the carrier (340) may operate the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) so that the carrier rotates by a predetermined angle about the first axis, the second axis, and / or the third axis with respect to the image sensor (370) of the camera module (300). Through this, the quality of the image acquired through the camera module (300) may be improved. For example, the quality of the image may be improved by suppressing shaking that occurs in the camera module (300) during the process of shooting a video of a subject or the process of shooting an image of a subject.
[0097] In one embodiment, referring to FIGS. 3B, 4A, 4B, and 4C, the carrier (340) may include a first side (3401) facing a first portion (321) of the camera housing (320), a second side (3402) facing a second portion (322) of the camera housing (320), and a third side (3403) facing a third portion (323) of the camera housing (320). In one embodiment, the second side (3402) and the third side (3403) may be substantially parallel to each other. In one embodiment, the first side (3401) may be substantially perpendicular to the second side (3402) and the third side (3403). In one embodiment, the first OIS magnet (411) may be disposed on a first surface (3401) of the carrier (340) to face a first OIS coil (412) disposed on a first portion (321) of the camera housing (320). In one embodiment, the second OIS magnet (421) may be disposed on a second surface (3402) of the carrier (340) to face a second OIS coil (422) disposed on a second portion (322) of the camera housing (320). In one embodiment, the third OIS magnet (431) may be disposed on a third surface (3403) of the carrier (340) to face a third OIS coil (432) disposed on a third portion (323) of the camera housing (320). In one embodiment, the first OIS magnet (411) and the second OIS magnet (421) may be positioned substantially perpendicular to each other by being disposed on mutually perpendicular planes (e.g., the first plane (3401), the second plane (3402)) of the carrier (340). In one embodiment, the first OIS magnet (411) and the third OIS magnet (431) may be positioned substantially perpendicular to each other by being disposed on mutually perpendicular planes (e.g., the first plane (3401), the third plane (3403)) of the carrier (340).
[0098] According to one embodiment, as illustrated in FIG. 4C and FIG. 5A described below, the carrier (340) and the reflective member (R) can rotate (e.g., rotate in the XZ plane of FIG. 4C) relative to the image sensor (370) about a first axis (e.g., the pitch axis and / or the Y axis of FIG. 4C) via an electromagnetic force acting on the first OIS actuator (410) (e.g., the first OIS magnet (411) and the first OIS coil (412)). In one embodiment, the carrier (340) and the reflective member (R) can rotate (e.g., rotate in the YZ plane of FIG. 4C) relative to the image sensor (370) about a second axis (e.g., the yaw axis and / or the X axis of FIG. 4C) via an electromagnetic force acting on the second OIS actuator (420) (e.g., the second OIS magnet (421) and the second OIS coil (422)). In one embodiment, the carrier (340) and the reflective member (R) can be rotated (e.g., rotated in the XY plane of FIG. 4c) relative to the image sensor about a third axis (e.g., the roll axis and / or the Z axis of FIG. 4c) via electromagnetic forces acting on a third OIS actuator (430) (e.g., a third OIS magnet (431) and a third OIS coil (432)).
[0099] In one embodiment, the carrier (340) can rotate about the image sensor (370) and the camera housing (320) about a first axis, a second axis, and a third axis. In one embodiment, the third axis can be an incident optical axis passing through the center of the incident surface (S1) of the reflective member (R) (e.g., the incident optical axis (C1) of FIG. 12A). The second axis can be an exit optical axis passing through the center of the exit surface (S2) of the reflective member (R) (e.g., the exit optical axis (C2) of FIG. 12A). In one embodiment, the first axis can be an axis passing through the intersection of the second axis and the third axis and being substantially parallel to the Y-axis of FIG. 4C. In one embodiment, the intersection of the first axis, the second axis, and the third axis can be located at the reflective surface (S3) of the reflective member (R).
[0100] As described below, the rotation center of the reflective member (R) (e.g., the rotation center (M) of FIG. 12A) may coincide with the reflection center of the reflective surface (S3). In one embodiment, the reflection center may be the intersection of an incident optical axis (C1) (e.g., the third axis) passing through the center of the incident surface (S1) of the reflective member (R) and an exit optical axis (C2) (e.g., the second axis) passing through the center of the exit surface (S2) of the reflective member (R). In one embodiment, the rotation center (M) of the reflective member (R) may be the rotation center (M) of the carrier (340) with respect to the camera housing (320). In one embodiment, the rotation center (M) of the reflective member (R) may be the intersection of the first axis, the second axis, and / or the third axis. Therefore, according to one embodiment of the present disclosure, since the rotation center (M) of the reflective member (R) and the reflection center of the reflective surface (S3) coincide, the error in the correction of image shake based on the control of the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) can be reduced.
[0101] As described above, the second OIS actuator (420) may be configured such that the carrier (340) and the reflective member (R) rotate about the second axis with respect to the image sensor (370), and the third OIS actuator (430) may be configured such that the carrier (340) and the reflective member (R) rotate about the third axis with respect to the image sensor (370). However, the present invention is not limited to the above description, and various embodiments may be possible. In one embodiment, the second OIS actuator (420) may be configured such that the carrier (340) and the reflective member (R) rotate about the third axis with respect to the image sensor (370). In this case, the third OIS actuator (430) may be configured such that the carrier (340) and the reflective member (R) rotate about the second axis with respect to the image sensor (370). In one embodiment, referring to FIG. 6B described below, the second OIS actuator (420) and the third OIS actuator (430) may be configured to cause the carrier (340) and the reflective member (R) to rotate about a third axis relative to the image sensor (370). For example, the second OIS actuator (420) and the third OIS actuator (430) may be configured to cause the carrier (340) and the reflective member (R) to rotate about a third axis relative to the image sensor (370). In one embodiment, the second OIS actuator (420) and the third OIS actuator (430) may be configured such that the axes along which the carrier (340) and the reflective member (R) rotate are the same. For example, the second OIS actuator (420) and the third OIS actuator (430) may be configured to cause the carrier (340) and the reflective member (R) to rotate about the second axis relative to the image sensor (370).
[0102] In addition, the first OIS actuator (410), the second OIS actuator (420), and the third OIS actuator (430) may be configured to provide various axes of rotation to the carrier (340) and the reflective member (R). For convenience of explanation hereinbelow, the second OIS actuator (420) may be configured to cause the carrier (340) and the reflective member (R) to rotate around the second axis, and the third OIS actuator (430) may be configured to cause the carrier (340) and the reflective member (R) to rotate around the third axis.
[0103] According to one embodiment of the present disclosure, either the second OIS actuator (420) or the third OIS actuator (430) may be omitted. For example, the third OIS actuator (430) may be omitted. For example, in this case, image shake can be corrected by driving the first OIS actuator (410) to rotate the carrier (340) about the first axis with respect to the image sensor (370). In addition, image shake can be corrected by rotating the carrier (340) about the second or third axis with respect to the image sensor (370) via the second OIS actuator (420). In the following description, it is assumed that the camera housing (320) includes all of the first OIS actuator (410), the second OIS actuator (420), and the third OIS actuator (430). However, the following description may be equally applicable even when either the second OIS actuator (420) or the third OIS actuator (430) of the camera housing (320) is omitted.
[0104] According to one embodiment, as illustrated in FIG. 4C and FIG. 5A described below, at least one flux detection sensor (520) may be disposed at the center of an OIS coil (e.g., a first OIS coil (412), a second OIS coil (422), a third OIS coil (432)). In one embodiment, a plurality of flux detection sensors (520) may be disposed inside the OIS coil. The flux detection sensors (520) may detect a change in a flux value according to a change in a distance from an opposing OIS magnetic body (e.g., a first OIS magnetic body (411), a second OIS magnetic body (421), a third OIS magnetic body (431)) based on the rotation of the carrier (340). The processor (120) may detect a change in a flux value detected through the flux detection sensor (520) to control the rotation of the carrier (340).
[0105] FIGS. 5A and 5B are assembly diagrams of a flexible printed circuit board, a camera housing, and a reflective actuator according to an embodiment of the present disclosure. FIG. 6A is a rear perspective view of the reflective actuator according to an embodiment of the present disclosure. FIG. 6B is a front perspective view of the reflective actuator according to an embodiment of the present disclosure. FIG. 6C is a front perspective view of the camera housing according to an embodiment of the present disclosure. FIGS. 7A to 7C are drawings of a first attracting magnet and a second attracting magnet according to an embodiment of the present disclosure. FIG. 8 is an enlarged view of a receiving portion of the camera housing illustrated in FIG. 6C.
[0106] According to one embodiment, as illustrated in FIGS. 5A and 5B, the carrier (340) may include a mounting portion (341) on which a reflective member (R) is disposed. In one embodiment, the mounting portion (341) may include a groove having a shape corresponding to that of the reflective member (R). In one embodiment, the mounting portion (341) may include a first inclined surface (3411) facing the reflective surface (S3) of the carrier (340). In one embodiment, the first inclined surface (3411) (e.g., the first inclined surface (3411) of FIG. 12A) may be substantially parallel to the reflective surface (S3). In one embodiment, the reflective surface (S3) of the reflective member (R) may be a surface inclined at a predetermined angle with respect to the support surface (325) of the camera housing (320). The first inclined surface (3411) can form a predetermined angle with the support surface (325) of the camera housing (320) by being substantially parallel to the reflective surface (S3).
[0107] According to one embodiment, as illustrated in FIGS. 5B, 6A, and 6C, the carrier (340) may include a guide portion (342). In one embodiment, the guide portion (342) may be formed in a direction facing (e.g., in the opposite direction) to the reflective surface (S3) of the reflective member (R). For example, the guide portion (342) may extend substantially perpendicular to the first inclined surface (3411) from the mounting portion (341) and may extend in a direction facing (e.g., in the opposite direction) to the reflective member (R). In one embodiment, the guide portion (342) may be formed to be inclined at a predetermined angle with respect to the support surface (325) of the camera housing (320) when the carrier (340) is placed in the camera housing (320).
[0108] In one embodiment, the guide portion (342) can be at least partially inserted into a receiving portion (330) protruding from a support surface (325) of the camera housing (320). In one embodiment, the receiving portion (330) of the camera housing (320) can include a guide groove (331) into which the guide portion (342) can be inserted. The carrier (340) can rotate about a first axis, a second axis, and / or a third axis with respect to the camera housing (320) via the first OIS actuator (410), the second OIS actuator, and / or the third OIS actuator (430) based on the guide portion (342) being fastened to the guide groove (331) of the receiving portion (330).
[0109] According to one embodiment, referring to FIGS. 5A, 5B, and 6C, the receiving portion (330) of the camera housing (320) may include a second inclined surface (332) corresponding to the first inclined surface (3411) of the mounting portion (341). In one embodiment, the reflective surface (S3), the first inclined surface (3411), and the second inclined surface (332) of the reflective member (R) may be substantially parallel. In one embodiment, a guide groove (331) may be formed in the second inclined surface (332) of the receiving portion (330). The carrier (340) may be disposed in the camera housing (320) such that the guide portion (342) is disposed in the guide groove (331) of the receiving portion (330).
[0110] In one embodiment not shown in the drawing, the guide portion (342) of the carrier (340) may protrude substantially perpendicularly to the support surface (325) of the camera housing (320). For example, the guide portion (342) may protrude from one surface of the carrier (340) so as to be perpendicular to the incident surface (S1) of the reflective member (R). Based on this, the receiving portion (330) of the camera housing (320) may include a plane (not shown) that is substantially parallel to the support surface (325) of the camera housing (320). The guide groove (331) may be formed in the plane of the receiving portion (330). The carrier (340) may rotate with respect to the camera housing (320) based on the guide portion (342) being fastened to the guide groove (331) of the receiving portion (330). In one embodiment, the guide portion (342) of the carrier (340) may be formed at least partially in a spherical shape, and the guide groove (331) of the camera housing (320) may be formed in a shape corresponding to the guide portion (342). In one embodiment, the carrier (340) may be rotated relative to the camera housing (320) via a guide structure (e.g., an OIS ball (b1) and / or a protrusion (not shown) formed on either the guide portion (342) or the guide groove (331)) disposed between the guide portion (342) and the guide groove (331).
[0111] In one embodiment, the carrier (340) can rotate about a first axis, a second axis, and / or a third axis relative to the camera housing (320) via the first OIS actuator (410), the second OIS actuator, and / or the third OIS actuator (430) based on the guide portion (342) being fastened to the guide groove (331) of the receiving portion (330).
[0112] As described above, the guide portion (342) of the carrier (340) and the receiving portion (330) of the camera housing (320) can be formed in various shapes so that the carrier (340) can be rotated relative to the camera housing (320).
[0113] According to one embodiment, a guide structure may be arranged between the camera housing (320) and the carrier (340). In one embodiment, the guide structure may be positioned between the guide portion (342) of the carrier (340) and the guide groove (331) of the receiving portion (330) of the camera housing (320). In one embodiment, the guide structure may guide the rotation of the carrier (340) with respect to the image sensor (370) inside the camera housing (320). In one embodiment, the guide structure may be in contact with at least one of a surface of the receiving portion (330) located within the guide groove (331) of the receiving portion (330) and the guide portion (342) of the carrier (340) at least three points. In this case, the guide portion (342) of the carrier (340) may rotate with respect to the receiving portion (330) at least at three points within the guide groove (331) of the camera housing (320). In addition, when the carrier (340) rotates relative to the camera housing (320), the guide portion (342) of the carrier (340) can be prevented from moving linearly (or sliding) within the guide groove (331) of the camera housing (320) by contacting at least one of the guide portion (342) and the receiving portion (330) with the guide structure at at least three points. Accordingly, the carrier (340) can be prevented from moving linearly relative to the camera housing (320) through the guide portion (342), and can be rotated relative to the camera housing (320).
[0114] In one embodiment, referring to FIGS. 5B, 6A, and 8, the guide structure may be an OIS ball (b1) which is a bearing ball. In one embodiment, at least three OIS balls (b1) may be arranged between the guide portion (342) of the carrier (340) and the guide groove (331) of the receiving portion (330). As described below, the OIS balls (b1) may be in contact with the curved portion (333) of the guide groove (331) (e.g., the first curved portion (333)).
[0115] In one embodiment, the guide structure may be at least three protrusions formed by protruding from at least one of the receiving portion (330) of the camera housing (320) or the guide portion (342) of the carrier (340). In one embodiment, the protrusions are formed by protruding from the first curved portion (333) located inside the guide groove (331) of the receiving portion (330) and may be in contact with the guide portion (342) of the carrier (340) at at least three points. In one embodiment, the protrusions are formed by protruding from the guide portion (342) of the carrier (340) and may be in contact with the first curved portion (333) of the receiving portion (330) at at least three points.
[0116] As described above, the guide structure can be configured in various ways, such as an OIS ball (b1), a receiving portion (330), or a protrusion formed integrally with the guide portion (342). In the following description, it is assumed that the guide structure is an OIS ball (b1), which is a bearing ball, as shown in FIGS. 5b, 6a, 8, 9, 10a, and 10b. However, the following description can be equally applied even when the guide structure is a protrusion.
[0117] According to one embodiment, as illustrated in FIGS. 5A, 5B, and 6C, the receiving portion (330) of the camera housing (320) may include a flat portion (334) and a first curved portion (333) positioned inside the guide groove (331). In one embodiment, the flat portion (334) may be substantially parallel to the first inclined surface (3411) of the carrier (340) and the reflective surface (S3) of the reflective member (R). In one embodiment, the first curved portion (333) may surround the flat portion (334) inside the guide groove (331). In one embodiment, the first curved portion (333) may be formed with a constant curvature inside the guide groove (331).
[0118] In one embodiment, the first curved portion (333) may be a portion where the receiving portion (330) comes into contact with the guide structure. For example, referring to FIG. 8, the OIS ball (b1), which is a guide structure, may be placed between the guide portion (342) of the carrier (340) and the first curved portion (333) of the receiving portion (330). In one embodiment, as shown in FIG. 10A, which will be described later, the OIS ball (b1) may be seated in a receiving groove (344) formed in the guide portion (342) of the carrier (340). In one embodiment, the receiving groove (344) may be formed in a second curved portion (345) formed with a certain curvature in the guide portion (342). In one embodiment, the second curved portion (345) may face the first curved portion (333) when the guide portion (342) of the carrier (340) is fastened to the guide groove (331) of the camera housing (320).
[0119] As the carrier (340) rotates about the first axis, the second axis, and / or the third axis relative to the camera housing (320), the OIS ball (b1) can move along the first curved portion (333) of the receiving portion (330) while positioned in the receiving groove (344) of the guide portion (342) to guide the rotation of the carrier (340) relative to the camera housing (320).
[0120] According to one embodiment, as illustrated in FIGS. 5B and 6A, a first ball cover (360A) (e.g., the first ball cover (360A) of FIGS. 11A to 11D) may be coupled to a guide portion (342) of a carrier (340). In one embodiment, the first ball cover (360A) may prevent an OIS ball (b1) positioned in a receiving groove (344) of the guide portion (342) from being separated from the receiving groove (344). In one embodiment, the first ball cover (360A) may include an opening (361A) for receiving a portion of the OIS ball (b1).
[0121] According to one embodiment, as illustrated in FIG. 6C, FIG. 8, and FIG. 12A described below, the first curved portion (333) of the receiving portion (330) may include a flat area (e.g., a first flat area (335)). In one embodiment, the flat area (335) may be formed at the lowermost end of the first curved portion (333) adjacent to the support surface (325) of the camera housing (320). In one embodiment, the OIS ball (b1) may be positioned in the first curved portion (333) excluding the flat area (335). In one embodiment, the guide portion (342) of the carrier (340) may include a flat area (e.g., a second flat area) that partially corresponds to the flat area (335) of the receiving portion (330).
[0122] In one embodiment, referring to FIG. 6C, FIG. 8, and FIG. 12A described below, the first planar region (335) may be substantially parallel to the support surface (325) of the camera housing (320). In one embodiment, when the first planar region (335) is formed at the lowermost end of the first curved portion (333) of the receiving portion (330), when the guide portion (342) of the carrier (340) is fastened to the receiving portion (330), the height (e.g., the length in the Z-axis direction based on FIG. 12A) of the carrier (340) from the support surface (325) of the camera housing (320) may be reduced compared to when the first planar region (335) is not formed. For example, since the first flat area (335) is formed inside the guide groove (331), the guide portion (342) can be lowered in the -Z direction with reference to FIG. 12A inside the guide groove (331) and be seated in the guide groove (331) compared to the case where the first flat area (335) is not formed. Accordingly, the height (H) (e.g., the length in the Z direction with reference to FIG. 12A) of the carrier (340) in the camera housing (320) can be reduced compared to the case where the first flat area (335) is not formed in the guide groove (331).
[0123] According to one embodiment, a first magnetic attraction body (511) may be disposed inside the receiving portion (330) of the camera housing (320), as illustrated in FIGS. 5B, 6A, 6B, 7A, 7B, and 7C. In one embodiment, the first magnetic attraction body (511) may be disposed on a plane portion (334) located within the receiving portion (330) and substantially parallel to the first inclined surface (3411). A second magnetic attraction body (512) may be disposed on one surface of a guide portion (342) inserted into the receiving portion (330). In one embodiment, an attractive force may act between the first magnetic attraction body (511) and the second magnetic attraction body (512). The guide portion (342) of the carrier (340) and the receiving portion (330) of the camera housing (320) can be attracted to each other through the attractive force acting between the first attracting magnet (511) and the second attracting magnet (512). Based on this, the guide portion (342) of the carrier (340) and the receiving portion (330) of the camera housing (320) can maintain point contact with the guide structure (e.g., OIS ball (b1), protrusion).
[0124] According to one embodiment, the first attraction magnet (511) and the second attraction magnet (512) may be configured in various shapes. In one embodiment, referring to FIG. 6c, the first attraction magnet (511) may be configured with two magnets in a straight shape. In this case, as illustrated in FIGS. 6a, 6b, and 7a, the second attraction magnet (512) may be configured with two magnets in a straight shape corresponding to the first attraction magnet (511). In one embodiment, referring to FIG. 7a, the magnets constituting the first attraction magnet (511) and the second attraction magnet (512) may have a width and depth of about 2 mm and a thickness of about 0.3 mm. In one embodiment, referring to FIG. 7b, the first magnetic attracting body (511) and the second magnetic attracting body (512) may be formed of a magnetic body having at least a portion of a semicircular shape. In one embodiment, referring to FIG. 7c, the first magnetic attracting body (511) and the second magnetic attracting body (512) may be magnets or metal plates having magnetism (e.g., a yoke). For example, the first magnetic attracting body (511) disposed in the camera housing (320) may be a metal plate that exerts an attractive force on the second magnetic attracting body (512). In one embodiment, the first magnetic attracting body (511) may be formed of a cross-shaped magnetic body. In this case, the second magnetic attracting body (512) may be formed of a cross-shaped magnetic body and may correspond to the first magnetic attracting body (511). In addition, the first suction magnet (511) and the second suction magnet (512) can be formed in various shapes.
[0125] In one embodiment, when the carrier (340) is moved in an unintended direction other than rotation about the first axis (e.g., the Y axis of FIG. 5A), the second axis (e.g., the X axis of FIG. 5A) and / or the third axis (e.g., the Z axis of FIG. 5A) relative to the camera housing (320) via the first OIS actuator (410), the second OIS actuator and / or the third OIS actuator (430), the carrier can be returned to its home position via an attractive force between the first and second magnetic attractors (511 and 512). The 'home position' of the carrier (340) may be its original state assembled to the camera housing (320) and may not be a state in which it is rotated about the first axis, the second axis and / or the third axis. For example, the default position may be a position relative to the camera housing (320) when the carrier (340) is not tilted relative to the camera housing (320) and the OIS actuators (e.g., the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430)) are not actuated. In one embodiment, referring to FIG. 4C described above, the reflective member (R) may have an incident surface (S1) substantially perpendicular to the third axis and an exit surface (S2) substantially perpendicular to the second axis when the carrier (340) is in the default position.
[0126] In one embodiment, when power to the camera module (300) is turned off, the carrier (340) can return to and / or maintain its home position relative to the camera housing (320) based on the attractive force acting between the first attracting magnet (511) and the second attracting magnet (512). For example, when power to the camera module (300) is turned off while the carrier (340) is rotated relative to the camera housing (320) about the first axis, the second axis, and / or the third axis, the carrier (340) can be restored to its home position relative to the camera housing (320) through the attractive force acting between the first attracting magnet (511) and the second attracting magnet (512).
[0127] FIG. 9 is an assembly diagram of a reflective actuator according to an embodiment of the present disclosure. FIG. 10A is a diagram illustrating a configuration and an OIS ball located on a rear surface of a reflective actuator according to an embodiment of the present disclosure. FIG. 10B is a diagram illustrating a state in which a first ball cover is coupled to a guide portion of a carrier according to an embodiment of the present disclosure. FIG. 11A is a perspective view of the first ball cover according to an embodiment of the present disclosure. FIG. 11B is a front view of the first ball cover according to an embodiment of the present disclosure. FIG. 11C and FIG. 11D are side views of the first ball cover according to an embodiment of the present disclosure. FIG. 12A is a diagram illustrating a guide portion of a carrier fastened to a receiving portion of a camera housing according to an embodiment of the present disclosure. FIG. 12B is an enlarged diagram illustrating the arrangement relationship of the first ball cover, the OIS ball, and the guide portion illustrated in FIG. 12A. FIG. 13 is a drawing showing a lens module arranged on an incident surface and an exit surface of a reflective member according to one embodiment of the present disclosure.
[0128] According to one embodiment, as illustrated in FIG. 9, the reflective actuator may include a reflective member (R), a carrier (340), a first OIS magnetic body (411), a second OIS magnetic body (421), a third OIS magnetic body (431), an OIS ball (b1), a first ball cover (360A), and a second suction magnetic body (512). At least one of the above-described components may be omitted or at least one component may be added.
[0129] According to one embodiment, as illustrated in FIGS. 10A and 10B , the guide portion (342) of the carrier (340) may include a curved portion (e.g., a second curved portion (345)) corresponding to the first curved portion (333) of the receiving portion (330) of the camera housing (320). In one embodiment, the second curved portion (345) of the guide portion (342) may be formed with substantially the same curvature as the first curved portion (333) of the receiving portion (330).
[0130] According to one embodiment, as illustrated in FIGS. 10A and 10B, the OIS ball (b1) may be seated in a receiving groove (344) formed in a guide portion (342) of a carrier (340). In one embodiment, the receiving groove (344) may be formed in a second curved portion (345) formed with a certain curvature in at least a portion of the guide portion (342). In one embodiment, the second curved portion (345) may face the first curved portion (333) when the guide portion (342) of the carrier (340) is fastened to the guide groove (331) of the camera housing (320). In one embodiment, the OIS ball (b1) may be brought into contact with one surface of the guide portion (342) located within the receiving groove (344). In one embodiment, the OIS ball (b1) can make a rolling motion by contacting the first curved portion (333) within the receiving groove (344) based on the rotation of the guide portion (342) of the carrier (340) relative to the receiving portion (330) of the camera housing (320).
[0131] According to one embodiment, as illustrated in FIGS. 10A and 10B, the receiving grooves (344) may be formed at equal intervals. For example, when three OIS balls (b1) are arranged between the guide portion (342) and the receiving portion (330), the three receiving grooves (344) may be formed at equal intervals. For example, adjacent receiving grooves (344) may be formed at equal intervals to form 120 degrees with respect to an imaginary circle. Accordingly, a plurality of OIS balls (b1) may be positioned at equal intervals on the guide portion (342). For example, adjacent OIS balls (b1) may be positioned at equal intervals to form 120 degrees. Accordingly, based on the plurality of OIS balls (b1) being arranged at equal intervals, the receiving portion (330) of the camera housing (320) may be stably brought into contact with the OIS balls (b1) at three points.
[0132] However, the number of OIS balls (b1) described above is merely an example, and the number of OIS balls (b1) may exceed three. In this case, the spacing between the receiving grooves (344) and the OIS balls (b1) may be reduced. For example, adjacent receiving grooves (344) may be formed at equal intervals on the guide portion (342) at an angle less than 120 degrees with respect to an imaginary circle. Accordingly, adjacent OIS balls (b1) may be arranged at equal intervals at an angle less than 120 degrees with respect to an imaginary circle.
[0133] According to one embodiment, as illustrated in FIGS. 9, 10B, 11A, 11B, and 11C, the OIS ball (b1) can be maintained in a state of being placed in the receiving groove (344) of the guide portion (342) through the first ball cover (360A) coupled to the guide portion (342). In one embodiment, the first ball cover (360A) can prevent the OIS ball (b1) from being separated from the receiving groove (344) of the guide portion (342). In one embodiment, the first ball cover (360A) can include an opening (361A) for receiving a portion of the OIS ball (b1). In one embodiment, the OIS ball (b1) may be brought into contact with the first curved portion (333) of the receiving portion (330) while being partially accommodated in the opening (361A) of the first ball cover (360A) to guide the rotation of the carrier (340) relative to the camera housing (320).
[0134] In one embodiment, the opening (361A) formed in the first ball cover (360A) may be based on the number of OIS balls (b1). In one embodiment, referring to FIG. 12B, the opening (361A) formed in the first ball cover (360A) may be formed to have a smaller size than the OIS ball (b1). For example, the diameter (D2) of the opening (361A) formed in the first ball cover (360A) may be smaller than the diameter (D1) of the OIS ball (b1). Accordingly, the OIS ball (b1) may not be separated from the receiving groove (344) through the opening (361A) formed in the first ball cover (360A).
[0135] In one embodiment, the first ball cover (360A) may be formed to a size that can be placed in the guide groove (331) of the camera housing (320). For example, the diameter (D'1) of the curved portion (333) illustrated in FIG. 8 may be formed to a size that can accommodate the first ball cover (360A). The diameter (D'1) of the curved portion (333) may be the diameter of an imaginary circle corresponding to the curved portion (333) when viewed perpendicularly to the flat portion (334).
[0136] In one embodiment, referring to FIGS. 12A and 13, a diameter (D'2) of a virtual circle having a radius equal to the distance from the center of rotation (M) of the reflective member (R) to the outer surface of the first ball cover (360A) may be formed to be approximately 5 mm to 7 mm. For example, a diameter (D'2) of a virtual circle having a radius equal to the distance from the center of rotation (M) to the outer surface of the first ball cover (360A) may be approximately 5.8 mm.
[0137] In one embodiment, referring to FIG. 11C, the height (L) of the first ball cover (360A) may be formed at a ratio of about 22% to 30% of the diameter (D'2) of an imaginary circle whose radius is the distance from the center of rotation (M) to the outer surface of the first ball cover (360A). In one embodiment, the height (L) of the first ball cover (360A) may be about 1.65 mm.
[0138] The figures and shapes of the first ball cover (360A) described above are merely examples, and the first ball cover (360A) may be formed in various shapes such that the OIS ball (b1) can be positioned between the guide portion (342) and the first ball cover (360A).
[0139] According to one embodiment, as illustrated in FIGS. 10A and 10B, the first ball cover (360A) may be coupled to the guide portion (342) of the carrier (340). In one embodiment, the first ball cover (360A) and the guide portion (342) may include a fastening structure. In one embodiment, the guide portion (342) may include a fastening portion (346) protruding from one surface. The first ball cover (360A) may include a fastening groove (363A) into which the fastening portion (346) is inserted. In one embodiment, the fastening groove (363A) may be formed in the engaging portion (362A) that contacts the guide portion (342). The first ball cover (360A) may be fixed to the guide portion (342) as the fastening portion (346) of the guide portion (342) is coupled to the fastening groove (363A). In one embodiment, the coupling portion (362A) can pressurize the guide portion (342) to increase the coupling force of the ball cover (360A) to the guide portion (342). The coupling method of the first ball cover (360A) and the guide portion (342) described above is merely an example, and the first ball cover (360A) and the guide portion (342) can be coupled in various ways. For example, the first ball cover (360A) can be coupled to the guide portion (342) in a hook-fastening method or a screw-fastening method.
[0140] In one embodiment, a lubricant (e.g., grease) may be applied inside the receiving groove (344) to reduce friction between the OIS ball (b1) and the inner surface of the receiving groove (344). In one embodiment, the OIS ball (b1) may not be detached from the receiving groove (344) due to the viscosity of the lubricant. Accordingly, even if the first ball cover (360A) is not coupled to the guide portion (342), the OIS ball (b1) may not be detached from the receiving groove (344). Based on this, the guide portion (342) of the carrier (340) may be fastened to the receiving portion (330) of the camera housing (320) in a state in which the OIS ball (b1) is placed in the receiving groove (344) of the guide portion (342) in a state in which the first ball cover (360A) is omitted.
[0141] According to one embodiment, as illustrated in FIG. 12A, when the guide portion (342) of the carrier (340) is fastened to the receiving portion (330) of the camera housing (320), the reflective surface (S3) of the reflective member (R) and the second inclined surface (332) of the receiving portion (330) may be substantially parallel. When the guide portion (342) of the carrier (340) is fastened to the receiving portion (330) of the camera housing (320), the rotational center (M) of the reflective member (R) may coincide with the reflection center of the reflective surface (S3). In one embodiment, the reflection center may be the intersection of an incident optical axis (C1) passing through the center of an incident surface (S1) of the reflective member (R) and an exit optical axis (C2) passing through the center of an exit surface (S2) of the reflective member (R). In one embodiment, the rotation center (M) of the reflective member (R) may be the rotation center (M) of the carrier (340) with respect to the camera housing (320). In one embodiment, the rotation center (M) of the reflective member (R) may be the intersection of the first axis, the second axis, and / or the third axis. Therefore, according to one embodiment of the present disclosure, since the rotation center (M) of the reflective member (R) and the reflection center of the reflective surface (S3) coincide, an error in compensation for image shake based on controlling the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) may be reduced.
[0142] According to one embodiment, as illustrated in FIGS. 12A and 13, the diameter (D'3) of a virtual circle having a radius equal to the distance from the rotation center (M) of the reflective member (R) to the first curved portion (333) of the receiving portion (330) with which the OIS ball (b1) comes into contact may be about 5 to 7 mm. If the diameter (D'3) of the virtual circle is defined differently, it may be the diameter of a virtual circle having a radius equal to the distance from the rotation center (M) of the reflective member (R) to a point of the OIS ball (b1) that comes into contact with the first curved portion (333) of the receiving portion (330). In one embodiment, the diameter (D'3) of the virtual circle may be about 6 mm. The diameter (D1) of the OIS ball (b1) may be formed to be 10% to 20% of the diameter (D'3) of an imaginary circle whose radius is the distance from the rotation center (M) of the reflective member (R) to the first curved portion (333) of the receiving portion (330) with which the OIS ball (b1) comes into contact. In one embodiment, the diameter (D1) of the OIS ball (b1) may be formed to be about 0.7 mm to 1.1 mm. For example, the diameter (D1) of the OIS ball (b1) may be about 1 mm. In one embodiment, the distance (R') from the rotation center (M) of the reflective member (R) to the center of the OIS ball (b1) may be about 2.15 mm to 2.95 mm. In one embodiment, the distance (R') from the rotation center (M) of the reflective member (R) to the center of the OIS ball (b1) may preferably be about 2.5 mm. The figures mentioned above are examples only and may not be limited thereto.
[0143] According to one embodiment, as illustrated in FIG. 13, at least one lens module may be included that faces at least one of an incident surface (S1) of the reflective member (R) and an exit surface (S2) of the reflective member (R). In one embodiment, referring to FIG. 4B described above, the first lens module (311) may be arranged to face the incident surface (S1) of the reflective member (R). In one embodiment, the first lens module (311) may be coupled with a lens housing (313) arranged on a carrier (340) to face the incident surface (S1) of the reflective member (R). In one embodiment, the lens housing (313) may be covered by a camera cover (301). In one embodiment, the first lens module (311) may be coupled with the lens housing (313) and at least a portion of the first lens module (311) may be positioned in an opening (3011) of the camera cover (301).
[0144] In one embodiment, the second lens module (312) may be arranged to face the exit surface (S2) of the reflective member (R). In one embodiment, at least a portion of the first lens module (311) and the second lens module (312) may be coupled to the carrier (340) and may rotate relative to the camera housing (320) based on the driving of the first OIS actuator (410), the second OIS actuator (420), and / or the third OIS actuator (430) together with the carrier (340). In one embodiment, the camera module (300) may omit at least one of the first lens module (311) and the second lens module (312). In one embodiment, when the first lens module (311) is omitted, the lens housing (313) illustrated in FIG. 4B may also be omitted.
[0145] According to one embodiment, when correcting image shake, as illustrated in FIG. 12A, FIG. 13, and FIG. 19A described below, the carrier (340) may be rotated relative to the image sensor (370) about a fourth axis (e.g., the A-axis of FIG. 12A, the A-axis of FIG. 13, and the A-axis of FIG. 19A) to correct image shake. In one embodiment, referring to FIGS. 12A and 13, the fourth axis (e.g., the A-axis of FIGS. 12A and 13) may be an axis that is substantially parallel to the short side of the reflective surface (S3) of the reflective member (R). In one embodiment, the second OIS actuator (420) and the third OIS actuator (430) may be controlled to respectively rotate the carrier (340) relative to the image sensor (370) about the fourth axis to correct image shake.
[0146] FIGS. 14A and 14B are views showing a state in which a receiving groove for placing an OIS ball is formed in a receiving portion of a camera housing according to one embodiment of the present disclosure, and a second ball cover is coupled to the receiving portion. FIG. 15A is an enlarged view of a receiving groove formed in a receiving portion of a camera housing according to one embodiment of the present disclosure. FIG. 15B is a view showing a state in which a second ball cover is coupled to the receiving portion of a camera housing according to one embodiment of the present disclosure. FIG. 15C is a cross-sectional view showing a state in which a second ball cover is coupled to the receiving portion of a camera housing according to one embodiment of the present disclosure.
[0147] According to one embodiment, as illustrated in FIGS. 14a, 14b, 15a, and 15b, the OIS ball (b1) may be seated in a receiving groove (336) formed in a receiving portion (330) of a camera housing (320). In one embodiment, the receiving groove (336) may be formed inside a guide groove (331) of the receiving portion (330). For example, at least a portion of the receiving groove (336) may be formed in a first curved portion (333) of the receiving portion (330) (e.g., the first curved portion (333)). In one embodiment, the OIS ball (b1) may be brought into contact with one surface of the receiving portion (330) located within the receiving groove (336). In one embodiment, the OIS ball (b1) may be placed in the receiving groove (336) of the receiving portion (330) and surround the first attracting magnet (511) placed inside the guide groove (331).
[0148] According to one embodiment, as illustrated in FIGS. 15A and 15B, the receiving grooves (336) may be formed at equal intervals within the guide grooves (331). Accordingly, a plurality of OIS balls (b1) may be positioned at equal intervals in the receiving portion (330). Accordingly, based on the plurality of OIS balls (b1) being positioned at equal intervals, the guide portion (342) of the carrier (340) may be stably brought into contact with the OIS balls (b1) at at least three points.
[0149] According to one embodiment, as illustrated in FIGS. 14A to 15B, a second ball cover (360B) (e.g., the first ball cover (360A) of FIG. 11A) may be coupled to a receiving portion (330) of a camera housing (320). The OIS ball (b1) may be maintained in a state of being disposed in a receiving groove (336) formed in the receiving portion (330) through the second ball cover (360B) coupled to the receiving portion (330). In one embodiment, at least a portion of the second ball cover (360B) may be disposed on a second inclined surface (332) of the receiving portion (330). In one embodiment, the second ball cover (360B) may include an opening (361B) for accommodating a portion of the OIS ball (b1). In one embodiment, the OIS ball (b1) may be brought into contact with the guide portion (342) of the carrier (340) while being partially accommodated in the opening (361B) of the second ball cover (360B) to guide the rotation of the carrier (340) relative to the camera housing (320).
[0150] In one embodiment, referring to FIGS. 15B and 15C, the opening (361B) of the second ball cover (360B) may be formed in an open shape. For example, the opening (361B) may be open toward one side of the guide groove (331) in which the first attraction magnet (511) is arranged.
[0151] According to one embodiment, as illustrated in FIGS. 15B and 15C, the second ball cover (360B) and the receiving portion (330) may include a fastening structure. In one embodiment, the receiving portion (330) may include a fastening portion (337) protruding from one surface. The second ball cover (360B) may include a fastening groove (363B) into which the fastening portion (337) is inserted. In one embodiment, the fastening groove (363B) may be formed in a coupling portion (362B) that contacts the guide portion (342). The second ball cover (360B) may be fixed to the receiving portion (330) as the fastening portion (337) of the receiving portion (330) is coupled to the fastening groove (363B). In one embodiment, the coupling portion (362B) may press the guide portion (342) to increase the coupling force of the ball cover (360B) to the guide portion (342). The above-described method of coupling the second ball cover (360B) and the receiving portion (330) is merely an example, and the second ball cover (360B) and the receiving portion (330) may be coupled in various ways. For example, the second ball cover (360B) may be coupled to the receiving portion (330) in a hook-fastening method or a screw-fastening method.
[0152] Figures 16a and 16b are drawings explaining the relationship between a magnetic flux detection sensor placed inside an OIS coil and an OIS magnetic body placed on a carrier (340).
[0153] According to one embodiment, at least one flux detection sensor (520) may be disposed at the center of an OIS coil (e.g., a first OIS coil (412), a second OIS coil (422), a third OIS coil (432)). In one embodiment, a plurality of flux detection sensors may be disposed inside the OIS coil.
[0154] In one embodiment, referring to FIGS. 16A and 16B, at least two flux detection sensors (521, 522) may be arranged inside the second OIS coil (422). In one embodiment, the flux detection sensors (521, 522) may be arranged inside the second OIS coil (422) so as to be symmetrical with respect to the first axis and may face the second OIS magnetic body (421). The flux detection sensors (521, 522) may detect a change in the flux value according to a change in the distance from the second OIS magnetic body (421) based on the rotation of the carrier (340). Since the processor is configured with a plurality of flux detection sensors (521, 522), the processor can more clearly identify a change in the position of the carrier (340) compared to when the processor is configured with a single flux detection sensor. Therefore, the control of the carrier (340) can be performed more accurately.
[0155] The above-described plurality of flux detection sensors (not shown) (e.g., flux detection sensors (521, 522)) may be disposed inside the first OIS coil (412). The flux detection sensors may detect a change in the flux value according to a change in the distance from the first OIS magnetic body (411) based on the rotation of the carrier (340). Similarly, the plurality of flux detection sensors (not shown) (e.g., flux detection sensors (521, 522)) may be disposed inside the third OIS coil (432). The flux detection sensors may detect a change in the flux value according to a change in the distance from the third OIS magnetic body (431) based on the rotation of the carrier (340).
[0156] FIGS. 17A and 17B are diagrams illustrating a relationship between a plurality of metal plates arranged to face each other with respect to different poles of a second OIS magnetic body disposed on a carrier (340) and a second OIS magnetic body, according to one embodiment of the present disclosure. FIGS. 18A and 18B are diagrams illustrating a relationship between a plurality of metal plates arranged to face each other with respect to different poles of a third OIS magnetic body disposed on a carrier (340) and a third OIS magnetic body, according to one embodiment of the present disclosure.
[0157] According to one embodiment, as illustrated in FIGS. 17A and 17B, a plurality of metal plates (531, 532) facing a second OIS magnet (421) may be disposed on the camera housing (320) such that the carrier (340) may be prevented from rotating about a second axis (e.g., the second axis of FIG. 4C and / or the X-axis of FIG. 17A) relative to the camera housing (320). In one embodiment, the plurality of metal plates (531, 532) may include a first metal plate (531) and a second metal plate (532). In one embodiment, the first metal plate (531) and the second metal plate (532) may face different poles of the second OIS magnet (421). In one embodiment, the first metal plate (531) and the second metal plate (532) may be positioned on a rotation radius about the second axis of the carrier (340). In one embodiment, when the carrier (340) rotates about the second axis relative to the camera housing (320), the carrier (340) can be returned to its original position through an attractive force acting between the plurality of metal plates (531, 532) and the second OIS magnet (421).
[0158] According to one embodiment, as illustrated in FIGS. 18A and 18B , a plurality of metal plates (541, 542) facing a third OIS magnet (431) may be disposed on the camera housing (320) such that the carrier (340) is prevented from rotating about a third axis (e.g., the third axis of FIG. 4C and / or the Z axis of FIG. 18A) relative to the camera housing (320). In one embodiment, the plurality of metal plates (541, 542) may include a third metal plate (541) and a fourth metal plate (542). In one embodiment, the third metal plate (542) and the fourth metal plate (542) may face different poles of the third OIS magnet (431). In one embodiment, the third metal plate (542) and the fourth metal plate (542) may be positioned on a rotation radius about the third axis of the carrier (340). In one embodiment, when the carrier (340) rotates about a third axis relative to the camera housing (320), the carrier (340) can be returned to its original position through an attractive force acting between the plurality of metal plates (541, 542) and the third OIS magnet (431).
[0159] The structure in which the carrier (340) is restrained from rotating about the second axis and / or the third axis with respect to the camera housing (320) as described through the above-described FIGS. 17a to 18b has been described based on the second actuator (420) and the third actuator (430) illustrated in FIGS. 4c and 6a, but may not be limited thereto. In one embodiment, the structure in which the carrier (340) is restrained from rotating about the second axis and / or the third axis with respect to the camera housing (320) may be equally applied to the second actuator (420) and the third actuator (430) illustrated in FIG. 6b. For example, the metal plates (not shown) facing the second OIS magnetic body (421) of FIG. 6B and the metal plates (not shown) facing the third OIS magnetic body (431) may have the same arrangement as the third metal plate (541) and the fourth metal plate (542) illustrated in FIG. 18A. For example, the metal plates may be arranged to face the N pole and the S pole of the second OIS magnetic body (421), respectively, so that an attractive force may act on the second OIS magnetic body (421). In addition, the other metal plates may be arranged to face the N pole and the S pole of the third OIS magnetic body (431), respectively, so that an attractive force may act on the third OIS magnetic body (431). Accordingly, the carrier (340) may be suppressed from rotating about the third axis with respect to the camera housing (320).
[0160] In one embodiment, the structure in which the carrier (340) is restrained from rotating about the first axis with respect to the camera housing (320) can be equally applied to the first actuator (410) illustrated in FIGS. 4C, 6A, and 6B. For example, metal plates (not shown) may be arranged to face the N and S poles of the first OIS magnetic body (411), respectively, so that an attractive force may be applied. Accordingly, when the carrier (340) rotates about the first axis with respect to the camera housing (320), the carrier (340) can be returned to its original position through an attractive force acting between the plurality of metal plates and the first OIS magnetic body (411). Accordingly, the carrier (340) can be restrained from rotating about the first axis with respect to the camera housing (320).
[0161] FIGS. 19A and 19B are drawings of a second OIS actuator configured to rotate the carrier about an axis inclined with respect to a support surface of the camera housing, according to one embodiment of the present disclosure.
[0162] According to one embodiment, when correcting image shake, as illustrated in FIGS. 12A, 13, and 19A, the carrier (340) may be rotated relative to the image sensor (370) about a fourth axis (e.g., the A-axis of FIG. 12A, the A-axis of FIG. 13, and / or the A-axis of FIG. 19A) to correct image shake. In one embodiment, referring to FIGS. 12A, 13, and 19A, the fourth axis may be an axis substantially parallel to a short side of the reflective surface (S3) of the reflective member (R). In one embodiment, the tilt axis (A) and the reflective surface (S3) may form an incline of about 45 degrees with respect to the support surface (325) of the camera housing (320). In one embodiment, the processor (120) may control the second OIS actuator (420) and the third OIS actuator (430) to rotate the carrier (340) about a fourth axis (e.g., the A axis of FIGS. 12A and 13) relative to the image sensor (370) to compensate for image shake.
[0163] According to one embodiment, as illustrated in FIGS. 19a and 19b, the second OIS actuator (420) may be disposed at an angle to the carrier (340) and the camera housing (320) such that the carrier (340) may rotate about a fourth axis relative to the image sensor (370). In one embodiment, the second OIS magnet (421) may be disposed at an angle to the second face (3402) of the carrier (340). For example, as illustrated in FIG. 19b, the second OIS magnet (421) may be disposed at the second face (3402) of the carrier (340) such that the plurality of magnets (421a, 421b) constituting the second OIS magnet (421) are substantially parallel to the fourth axis. In one embodiment, the plurality of magnets (421a, 421b) constituting the second OIS magnetic body (421) may be symmetrical with respect to the fourth axis, but is not limited thereto. In one embodiment, the second OIS coil (422) may be disposed at an angle to the second part (322) of the camera housing (320) so as to face the second OIS magnetic body (421). For example, the second OIS coil (422) may be disposed at an angle to the second part (322) so as to be symmetrical with respect to the fourth axis. In one embodiment, the above configuration may be equally applied to the third OIS magnetic body (430).
[0164] The camera module (180, 300) may be capable of high magnification by utilizing the refraction of light. For example, the camera module (180, 300) may include a reflective member (R) such as a prism or mirror. Light incident on the reflective member (R) may have its path bent through reflection or refraction and transmitted to the image sensor (370).
[0165] A camera module (180) using a reflective member (R) may have a form in which a ball guide part (not shown), a middle guide part (not shown), a reflective actuator, a lens driving part (310), and an image sensor (370) are sequentially arranged inside a camera housing (320).
[0166] Meanwhile, the reflective actuator may include a reflective member (R) and a carrier (not shown). The reflective member (R) may be tilted relative to the image sensor (370) to compensate for shaking of an image formed on the image sensor (370) due to hand shake. For example, a carrier having a reflective member (R) disposed thereon can be rotated about one of a first axis (e.g., a pitch axis, Y axis in FIG. 4C) and a second axis (yaw axis (e.g., an X axis in FIG. 4C) or a third axis (roll axis (e.g., a Z axis in FIG. 4C)) with respect to the image sensor (370) via actuators (e.g., coils and magnets) (e.g., a first OIS actuator (410), a second OIS actuator (420), and / or a third OIS actuator (430)). The middle guide unit can be rotated about the first axis with respect to the image sensor (370) via the actuator. The carrier can be rotated in the same direction as the rotational direction of the middle guide unit by being linked to the middle guide unit.
[0167] Meanwhile, the middle guide portion may be configured to guide the rotation of the carrier. For example, if the carrier is designed to rotate around a second axis, the middle guide portion may guide the rotation of the carrier so that it does not rotate around a third axis.
[0168] Similarly, the ball guide portion may be configured to guide the rotation of the middle guide portion. For example, if the middle guide portion is designed to rotate about a first axis different from the rotational axis of the carrier (e.g., a second axis), the ball guide may guide the rotation of the middle guide portion so that it does not rotate about the second axis.
[0169] The structure of the camera module (180) described above may include a middle guide portion that guides the rotation of the carrier and a ball guide portion that guides the rotation of the middle guide portion. Even if the arrangement of the carrier, the middle guide portion, and the ball guide portion is optimized, the omission of one of the above-described components is inevitable, so there may be a limit to reducing the size of the camera module (180). In addition, the more components that make up the camera module (180), the more complex the assembly process becomes, which may increase production costs.
[0170] The technical tasks to be achieved in this document are not limited to the technical tasks mentioned above, and other technical tasks not mentioned will be clearly understood by those with ordinary skill in the technical field to which this document pertains from the description below.
[0171] A camera module (180, 300) according to one embodiment of the present disclosure (e.g., the camera module (180) of FIG. 1, the camera module (300) of FIG. 3A) may include a reflective member (R). In one embodiment, the camera module may include a carrier (340) including a mounting portion (341) on which the reflective member is disposed and a guide portion (342) extending from the mounting portion in a direction opposite to the reflective member. In one embodiment, the camera module may include a receiving portion (330) having a guide groove (331) formed therein in which at least a portion of the guide portion is disposed, and a camera housing (320) on which the carrier is disposed. In one embodiment, the camera module may include a guide structure that contacts at least one of the guide groove and the guide portion at at least three points. In one embodiment, the camera module may include a first OIS magnetic body (411) disposed on a first surface (3401) of the carrier. In one embodiment, the camera module may include a second OIS magnet (421) disposed on a second surface (3402) perpendicular to the first surface of the carrier. In one embodiment, the camera module may include a first OIS coil disposed in the camera housing and facing the first OIS magnet. In one embodiment, the camera module may include a second OIS coil disposed in the camera housing and facing the second OIS magnet. In one embodiment, the camera module may include a lens driving unit through which light reflected from the reflective member is transmitted. In one embodiment, the camera module may include an image sensor (230, 370) (e.g., image sensor (230) of FIG. 2, image sensor (370) of FIG. 3B) through which light transmitted from the lens driving unit is incident.
[0172] In one embodiment, the carrier can rotate about a first axis (e.g., the first axis of FIG. 4C) relative to the camera housing via an electromagnetic force acting between the first OIS magnet and the first OIS coil. In one embodiment, the carrier can rotate about a second axis (e.g., the second axis of FIG. 4C) perpendicular to the first axis relative to the camera housing via an electromagnetic force acting between the second OIS magnet and the second OIS coil.
[0173] In one embodiment, the camera module may further include a third OIS magnet (431) disposed on a third side (3403) of the carrier that is parallel to the second side of the carrier. In one embodiment, the camera module may further include a third OIS coil (432) disposed in the camera housing and facing the third OIS magnet.
[0174] In one embodiment, the carrier can be rotated about a third axis (e.g., the third axis of FIG. 4c) perpendicular to the first and second axes relative to the camera housing through an electromagnetic force acting between the third OIS magnet and the third OIS coil.
[0175] In one embodiment, the mounting portion of the carrier may include a first inclined surface (3411) that is parallel to the reflective surface (S3) of the reflective member. In one embodiment, the guide portion may extend in a direction perpendicular to the first inclined surface.
[0176] In one embodiment, the receiving portion of the camera housing may include a second inclined surface (332) parallel to the first inclined surface. In one embodiment, the guide groove may be formed on the second inclined surface.
[0177] In one embodiment, the receiving portion may include a curved portion (333) formed with a certain curvature inside the guide groove and in contact with the guide structure, and a flat portion (334) positioned adjacent to the curved portion and parallel to the reflective surface (S3) of the reflective member.
[0178] In one embodiment, the camera module may further include a first attracting magnet (511) disposed on the flat surface of the receiving portion and a second attracting magnet (512) disposed on one surface of the guide portion and facing the first attracting magnet.
[0179] In one embodiment, the guide groove may include a planar area (335) adjacent to a portion of the curved portion and parallel to the support surface of the camera housing.
[0180] In one embodiment, the guide structure may include at least three OIS balls (b1) arranged between the guide portion and the guide groove.
[0181] In one embodiment, one side of the receiving portion located inside the guide groove and one of the guide portions may include receiving grooves (344) formed at equal intervals and each receiving at least three OIS balls.
[0182] In one embodiment, the camera module may further include a ball cover (360A, 360B) (e.g., the first ball cover (360A) of FIG. 11A, the second ball cover (360B) of FIG. 14A) that accommodates at least a portion of the OIS ball and is coupled to one of the guide portion and the receiving portion.
[0183] In one embodiment, the ball cover may include openings (361A, 361B) in which at least three OIS balls are respectively positioned (e.g., opening (361A) of the first ball cover (360A) of FIG. 11A, opening (361B) of the second ball cover (360B) of FIG. 15B).
[0184] In one embodiment, the diameter (D2) of the opening of the ball cover may be smaller than the diameter (D1) of the OIS ball.
[0185] In one embodiment, the receiving portion may include a flat portion (334) positioned inside the guide groove and parallel to the reflective surface of the reflective member, and a curved portion (333) formed with a predetermined curvature to surround the flat portion and come into contact with the OIS ball. In one embodiment, the diameter (D'1) of the curved portion may be formed to a size that accommodates the ball cover.
[0186] In one embodiment, the height (L) of the ball cover may be greater than the diameter (D1) of the OIS ball.
[0187] In one embodiment, the reflection center, which is the intersection of the incident optical axis (C1) passing through the center of the incident surface of the reflective member and the exit optical axis (C2) passing through the center of the exit surface, may coincide with the rotation center of the reflective member, which is the intersection of the first axis, the second axis, and the third axis.
[0188] In one embodiment, the camera module may further include a plurality of magnetic flux detection sensors (520) positioned inside at least one of the first OIS coil, the second OIS coil, and the third OIS coil.
[0189] In one embodiment, the camera module may further include a plurality of metal plates disposed in the camera housing and each facing different poles of the second OIS magnet and having an attractive force.
[0190] In one embodiment, the camera module may further include at least one lens module (311) facing the incident surface of the reflective member.
[0191] According to one embodiment of the present disclosure, an electronic device (e.g., the electronic device 101 of FIG. 1, the electronic device 200 of FIG. 3A) including a camera module (180, 300) (e.g., the camera module 180 of FIG. 1, the camera module 300 of FIG. 3A) may include a reflective member (R). In one embodiment, the electronic device may include a carrier (340) including a mounting portion (341) on which the reflective member is disposed, and a guide portion (342) extending from the mounting portion in a direction opposite to the reflective member. In one embodiment, the electronic device may include a receiving portion (330) having a guide groove (331) formed therein in which at least a portion of the guide portion is disposed, and a camera housing (320) on which the carrier is disposed. In one embodiment, the electronic device may include a guide structure that contacts at least one of the guide groove and the guide portion at at least three points. In one embodiment, the electronic device may include a first OIS magnet (411) disposed on a first surface (3401) of the carrier. In one embodiment, the electronic device may include a second OIS magnet (421) disposed on a second surface (3402) of the carrier perpendicular to the first surface. In one embodiment, the electronic device may include a first OIS coil (412) disposed in the camera housing and facing the first OIS magnet. In one embodiment, the electronic device may include a second OIS coil (422) disposed in the camera housing and facing the second OIS magnet. In one embodiment, the electronic device may include a lens driver (310) through which light reflected from the reflective member is transmitted. In one embodiment, the electronic device may include an image sensor (230, 370) (e.g., image sensor (230) of FIG. 2, image sensor (370) of FIG. 3b) onto which light transmitted from the lens driving unit is incident.
[0192] According to one embodiment disclosed in the present document, a structure capable of implementing an image stabilizer (e.g., an optical image stabilizer (OIS)) function may be included. The camera module (180, 300) of the present disclosure may omit a middle guide portion (not shown) that guides rotation of the carrier (340) and a ball guide portion (not shown) that guides rotation of the middle guide portion. In one embodiment, the carrier (340) may be partially coupled to a receiving portion (330) formed in the camera module (300) to secure a degree of freedom of rotation relative to a first axis (e.g., a pitch axis and / or a Y axis of FIG. 4C), a second axis (e.g., a yaw axis and / or an X axis of FIG. 4C), and a third axis (e.g., a roll axis and / or a Z axis of FIG. 4C).
[0193] Additionally, according to one embodiment of the present disclosure, the size of the camera module (300) can be reduced based on the omission of the middle guide portion and the ball guide portion. In addition, the production cost can be reduced due to the simplification of the production process by reducing the number of parts used in the camera module (300).
[0194] Additionally, according to one embodiment of the present disclosure, the reflection center of the reflective member (R) disposed on the carrier (340) and the rotation center (M) of the reflective member (R) may coincide. In this case, the driving error of the optical image stabilizer (OIS) function for image shake correction may be reduced.
[0195] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.
[0196] According to various embodiments disclosed in this document, the electronic device (101) has a bar type or a plate type appearance, but is not limited thereto. For example, the illustrated electronic device (101) may be a part of a foldable electronic device, a slidable electronic device, a stretchable electronic device, and / or a rollable electronic device. The terms “foldable electronic device,” “slidable electronic device,” “stretchable electronic device,” and / or “rollable electronic device” may refer to an electronic device in which a display (e.g., the display module (160) of FIG. 1) is capable of bending deformation, such that at least a portion thereof is folded, wound or rolled, at least a portion thereof is expanded, and / or the display module (160) of FIG. 1) is housed inside a housing. Foldable electronic devices, slideable electronic devices, stretchable electronic devices and / or rollable electronic devices can be used to expand the screen display area by unfolding the display or exposing a wider area of the display to the outside, depending on the user's needs.
[0197] Electronic devices according to the various embodiments disclosed in this document may take various forms. Electronic devices may include, for example, portable communication devices (e.g., smartphones), computer devices, portable multimedia devices, portable medical devices, cameras, wearable devices, or home appliances. Electronic devices according to the embodiments of this document are not limited to the aforementioned devices.
[0198] The various embodiments of this document and the terminology used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, similar reference numerals may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the items, unless the context clearly indicates otherwise. In this document, each of the phrases "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" can include any one of the items listed together in the corresponding phrase among those phrases, or all possible combinations thereof. Terms such as "first," "second," or "first" or "second" may be used merely to distinguish one component from another, and do not limit the components in any other respect (e.g., importance or order). When a component (e.g., a first component) is referred to as "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.
[0199] The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and may be used interchangeably with terms such as logic, logic block, component, or circuit. A module may be an integral component, or a minimum unit or part of such a component that performs one or more functions. For example, according to one embodiment, a module may be implemented in the form of an application-specific integrated circuit (ASIC).
[0200] Various embodiments of the present document may be implemented as software (e.g., a program (140)) including one or more instructions stored in a storage medium (e.g., an internal memory (136) or an external memory (138)) readable by a machine (e.g., an electronic device (101)). For example, a processor (e.g., a processor (120)) of the machine (e.g., an electronic device (101)) may call at least one instruction among the one or more instructions stored from the storage medium and execute it. This enables the machine to operate to perform at least one function according to the at least one called instruction. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The machine-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-transitory' simply means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and the term does not distinguish between cases where data is stored semi-permanently or temporarily on the storage medium.
[0201] According to one embodiment, the method according to various embodiments disclosed in this document may be provided as a computer program product. The computer program product may be traded between sellers and buyers as a product. The computer program product may be distributed in the form of a device-readable storage medium (e.g., compact disc read-only memory (CD-ROM)) or may be provided through an application store (e.g., Play Store). TM ) or directly between two user devices (e.g., smart phones), online distribution (e.g., downloading or uploading). In the case of online distribution, at least a portion of the computer program product may be at least temporarily stored or temporarily created in a machine-readable storage medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.
[0202] According to various embodiments, each component (e.g., a module or a program) of the above-described components may include one or more entities, and some of the entities may be separated and arranged in other components. According to various embodiments, one or more components or operations of the aforementioned components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (e.g., a module or a program) may be integrated into a single component. In such a case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by the corresponding component among the plurality of components prior to the integration. According to various embodiments, the operations performed by a module, program, or other component may be executed sequentially, in parallel, iteratively, or heuristically, or one or more of the operations may be executed in a different order, omitted, or one or more other operations may be added.
[0203] It will be understood that this document contemplates and encompasses embodiments based on any combination of two or more of the disclosed embodiments, as well as embodiments comprising any combination of the features disclosed herein. That is, the absence of an explicit indication that two features or two embodiments can be combined does not imply that such a combination is not envisioned, but rather that such a combination is intended to be included herein.
Claims
1. In the camera module (180, 300), Absence of reflection (R); A carrier (340) including a mounting portion (341) on which the reflective member is placed and a guide portion (342) extending from the mounting portion in a direction opposite to the reflective member; A camera housing (320) including a receiving portion (330) having a guide groove (331) formed to receive at least a portion of the guide portion, and in which the carrier is placed; A guide structure that comes into contact with at least one of the above guide home and the above guide portion at at least three points; A first OIS magnet (411) arranged on the first side (3401) of the carrier; A second OIS magnet (421) arranged on a second surface (3402) perpendicular to the first surface of the carrier; A first OIS coil (412) disposed in the camera housing and facing the first OIS magnet; A second OIS coil (422) disposed in the camera housing and facing the second OIS magnet; A lens driving unit (310) through which light reflected from the above reflective member is transmitted; and A camera module including an image sensor (230, 370) onto which light transmitted from the above lens driving unit is incident.
2. In paragraph 1, The above carrier, Rotates the camera housing about the first axis through an electromagnetic force acting between the first OIS magnet and the first OIS coil, A camera module that rotates about a second axis perpendicular to the first axis with respect to the camera housing through an electromagnetic force acting between the second OIS magnet and the second OIS coil.
3. In paragraph 2, A third OIS magnet (431) arranged on a third surface (3403) of the carrier parallel to the second surface of the carrier; and Further comprising a third OIS coil (432) disposed in the camera housing and facing the third OIS magnet; The above carrier, A camera module that rotates about a third axis perpendicular to the first axis and the second axis with respect to the camera housing through an electromagnetic force acting between the third OIS magnet and the third OIS coil.
4. In paragraph 1, The above-mentioned fixing part of the above-mentioned carrier, Including a first inclined surface (3411) parallel to the reflective surface (S3) of the above reflective member, The above guide section, A camera module extending in a direction perpendicular to the first inclined plane.
5. In paragraph 4, The above-mentioned receptacle of the above-mentioned camera housing, Including a second inclined plane (332) parallel to the first inclined plane, The above guide home is, A camera module formed on the second inclined surface.
6. In paragraph 4 or 5, The above-mentioned receiving area is, A camera module including a curved portion (333) formed with a certain curvature inside the guide groove and in contact with the guide structure, and a flat portion (334) positioned adjacent to the curved portion and parallel to the reflective surface (S3) of the reflective member.
7. In paragraph 6, A first suction magnet (511) arranged on the flat surface of the above-mentioned receiving portion; and A camera module further comprising a second suction magnet (512) disposed on one side of the guide portion and facing the first suction magnet.
8. In paragraph 6, The above guide home is, A camera module comprising a flat area (335) adjacent to a portion of the above curved portion and parallel to the support surface of the camera housing.
9. In paragraph 1, The above guide structure is, A camera module including at least three OIS balls (b1) arranged between the guide portion and the guide groove.
10. In paragraph 9, One side of the receiving portion located inside the above guide home and one of the above guide portions, A camera module including at least three OIS balls each receiving receiving grooves (344) formed at equal intervals.
11. In paragraph 10, A camera module further comprising a ball cover (360A, 360B) that accommodates at least a portion of the OIS ball and is coupled to one of the guide portion and the accommodation portion.
12. In paragraph 11, The above-mentioned receiving area is, It includes a flat portion (334) located inside the above guide groove and parallel to the reflective surface of the above reflective member, and a curved portion (333) formed with a certain curvature to surround the flat portion and come into contact with the OIS ball. The diameter (D'1) of the above curved portion is A camera module formed in a size to accommodate the above ball cover.
13. In paragraph 3, The reflection center, which is the intersection of the incident optical axis (C1) passing through the center of the incident surface of the above reflective member and the exit optical axis (C2) passing through the center of the exit surface, is A camera module whose center of rotation of the reflective member coincides with the intersection of the first axis, the second axis, and the third axis.
14. In paragraph 1, A camera module further comprising at least one lens module (311) facing the incident surface of the reflective member.
15. In an electronic device including a camera module (180, 300), Absence of reflection (R); A carrier (340) including a mounting portion (341) on which the reflective member is placed and a guide portion (342) extending from the mounting portion in a direction opposite to the reflective member; A camera housing (320) including a receiving portion (330) having a guide groove (331) formed to receive at least a portion of the guide portion, and in which the carrier is placed; A guide structure that comes into contact with at least one of the above guide home and the above guide portion at at least three points; A first OIS magnet (411) arranged on the first side (3401) of the carrier; A second OIS magnet (421) arranged on a second surface (3402) perpendicular to the first surface of the carrier; A first OIS coil (412) disposed in the camera housing and facing the first OIS magnet; A second OIS coil (422) disposed in the camera housing and facing the second OIS magnet; A lens driving unit (310) through which light reflected from the above reflective member is transmitted; and An electronic device including an image sensor (230, 370) onto which light transmitted from the lens driving unit is incident.
Citation Information
Patent Citations
Optical vibration suppression mechanism with switchable optical path
JP5923558B2
Rotational ball-guided voice coil motor
KR1020180125989A
Computer device of robust surface electromyography feature selection based on recursive feature elimination for gait recognition, and method of the same
KR1020230070636A
Actuator for driving reflector in dual directions and camera module including the same
KR102495466B1
KR20220170225A