WO2021190186A1 - 一种摄像模组、感光驱动装置及电子设备 - Google Patents

一种摄像模组、感光驱动装置及电子设备 Download PDF

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Publication number
WO2021190186A1
WO2021190186A1 PCT/CN2021/075764 CN2021075764W WO2021190186A1 WO 2021190186 A1 WO2021190186 A1 WO 2021190186A1 CN 2021075764 W CN2021075764 W CN 2021075764W WO 2021190186 A1 WO2021190186 A1 WO 2021190186A1
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WIPO (PCT)
Prior art keywords
photosensitive
lens
driving device
camera module
mover
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PCT/CN2021/075764
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English (en)
French (fr)
Inventor
陈伟
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Oppo广东移动通信有限公司
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Application filed by Oppo广东移动通信有限公司 filed Critical Oppo广东移动通信有限公司
Publication of WO2021190186A1 publication Critical patent/WO2021190186A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/54Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50Constructional details
    • H04N23/55Optical parts specially adapted for electronic image sensors; Mounting thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60Control of cameras or camera modules
    • H04N23/67Focus control based on electronic image sensor signals

Definitions

  • the camera module needs to change the object distance or image distance during the focusing process, which will increase the installation space occupied by the camera module.
  • the electronic equipment in the related art realizes the zoom function by moving the lens group in the camera module.
  • a camera module including:
  • At least one lens At least one lens
  • the photosensitive component is used to sense the light passing through the lens
  • the photosensitive driving device can drive the photosensitive component to move closer to or away from the lens to adjust the focal length of the camera module.
  • a photosensitive driving device which is characterized in that it comprises:
  • an electronic device including:
  • a housing having a second opening, the housing defines a second accommodating cavity, and the second opening is in communication with the second accommodating cavity;
  • the photosensitive driving device is arranged in the second accommodating cavity, and the external light is irradiated to the lens through the second opening.
  • the present application provides a camera module, a photosensitive driving device, and electronic equipment.
  • the camera module includes a lens, a photosensitive component, and a photosensitive driving device.
  • the photosensitive driving device can drive the photosensitive component to move closer to or away from the lens to adjust the camera module.
  • the focal length of the group In the present application, a photosensitive driving device capable of driving the photosensitive component is arranged in the camera module, and the distance between the photosensitive component and the lens is changed by the movement of the photosensitive component, and the distance between the lens and the photosensitive component is the image distance, and the image distance changes ,
  • the focal length of the camera module changes accordingly, and the zoom function of the camera module can be realized.
  • the lens does not move and the photosensitive component moves, and the weight of the photosensitive component is much smaller than the weight of the lens. Therefore, the driving force of the photosensitive driving device is relatively low. Under the same conditions, the moving efficiency of the photosensitive component is high, which is convenient for realizing fast zooming. Furthermore, because the lens does not move, the field of view opening of the camera module can be kept at a small size, which can meet the normal imaging requirements, and occupies a small space in the electronic device, which is beneficial to the arrangement of other parts or components. The cost of design and installation is low.
  • Figure 1 is a structural cross-sectional view of a camera module in the related art in a first state
  • FIG. 2 is a structural cross-sectional view of the camera module in the related art in a second state
  • Figure 3 is a schematic diagram of the positional relationship between the lens group and the field of view opening in the related art camera module
  • FIG. 4 is a structural cross-sectional view of the photosensitive driving device installed in the camera module in the first state in the embodiment of the application;
  • FIG. 5 is a structural cross-sectional view of the photosensitive driving device installed in the camera module in the second state in the embodiment of the application;
  • FIG. 6 is a structural cross-sectional view of a photosensitive driving device installed in a camera module in a first state in another embodiment of the application;
  • FIG. 7 is a structural cross-sectional view of each component of the camera module in an exploded state in an embodiment of the application;
  • FIG. 9 is a cross-sectional view of the structure of the electronic device in the second state in the embodiment of the application.
  • the lens group 110' moves away from the field of view openings 170a, 170b (the distance between the field of view opening 170a and the lens group 110' in the figure is small, and the distance of the field of view opening 170b from the lens group 110' is large. , Then the change from the field of view opening 170a to the field of view opening 170b is equivalent to the lens group 110' moving away from the field of view opening), the size of the field of view opening 170b is greater than the size of the field of view opening 170a.
  • the photosensitive component 120 is used to sense the light passing through the lens 110.
  • the photosensitive component 120 is a key component for imaging in the camera module 100. As is well known to those skilled in the art, it can sense the light passing through the lens 110 to generate an optical signal, and convert the optical signal into an electrical signal and transmit it to other parts or components in the camera module 100 to finally generate an image. . Therefore, there is no need for direct physical contact between the photosensitive component 120 and the lens 110, as long as the photosensitive component 120 can directly or indirectly sense the light irradiated by the lens 110.
  • one surface of the photosensitive component 120 may be used as a sensing surface to be irradiated by the light projected from the lens 110.
  • the size and type of the photosensitive component 120 are not limited, and the photosensitive components 120 with the above functions in the field meet the requirements.
  • the amount of power given to the photosensitive assembly 120 by the photosensitive driving device 130 is determined according to the resistance to be overcome by the movement of the photosensitive assembly 120, which is not limited here.
  • the photosensitive driving device 130 drives the photosensitive component 120 to move in a direction as long as it can be close to or away from the lens 110 to achieve the effect of changing the focal length f of the camera module 100, and is not limited to a specific direction.
  • the object distance u does not change, and the image distance v decreases, and the focal length f of the camera module 100 decreases.
  • the photosensitive component 120 moves in a direction away from the lens 110, and other conditions remain unchanged, the object distance u does not change, and the image distance v increases, and the focal length f of the camera module 100 increases.
  • the adjustment of the focal length f of the camera module 100 can be achieved.
  • the photosensitive driving device 130 drives the photosensitive assembly 120 along a direction parallel to the optical axis 111 of the lens 110 move.
  • the optical axis 111 is the line passing through the center of the lens 110 in the camera module 100. Regardless of whether the lens 110 is a convex lens or a concave lens, the light irradiating the lens 110 at the position of the optical axis 111 will not change its optical characteristics, that is, the light will continue along the original The direction shoots out. Let the photosensitive driving device 130 drive the photosensitive component 120 to move along the direction parallel to the optical axis 111 of the lens 110.
  • the image distance v of the camera module 100 changes as much as the photosensitive component 120 moves relative to the lens 110, but not Components are generated in other directions.
  • the adjustment efficiency at this time is the highest.
  • space is only occupied in the moving direction of the photosensitive component 120, and no additional space occupation is generated, which saves the internal space of the camera module 100.
  • the photosensitive component 120 can receive the light passing through the lens 110 to generate an optical signal, convert the optical signal into an electrical signal, and transmit it to other parts or components in the camera module 100 to finally generate an image.
  • the photosensitive component 120 includes a photosensitive chip 121 and a circuit board 122.
  • the photosensitive chip 121 receives light passing through the lens 110, thereby generating an optical signal, and converting the optical signal into an electrical signal.
  • the circuit board 122 connects the photosensitive chip 121 with other components or components in the camera module 100, and transmits the electrical signals in the photosensitive chip 121.
  • the photosensitive chip 121 is fixed to the circuit board 122 and is electrically connected to the circuit board 122.
  • the photosensitive chip 121 and the circuit board 122 can be connected in various ways.
  • an adhesive layer may be provided between the circuit board 122 and the photosensitive chip 121, and the photosensitive chip 121 may be bonded to the surface of the circuit board 122 through the adhesive layer.
  • a mounting groove can also be opened on the circuit board 122, and the photosensitive chip 121 is fixed to the bottom wall or side wall of the mounting groove with an adhesive, so as to save the space occupied by the circuit board 122 in the thickness direction.
  • the above connection methods can be flexibly selected according to the actual structural characteristics.
  • the photosensitive chip 121 includes a photosensitive surface 1211.
  • the photosensitive surface 1211 is one of the surfaces of the photosensitive chip 121, and the photosensitive material is arranged on the surface by coating or mixing.
  • the photosensitive material can undergo specific changes under light irradiation to generate light signals and convert the light signals into The role of electrical signals.
  • the light passing through the lens 110 irradiates the photosensitive surface 1211 to cooperate to realize the imaging function of the camera module 100. Since the photosensitive chip 121 is fixed to the circuit board 122, the photosensitive driving device 130 only needs to be connected to the circuit board 122 to drive the photosensitive chip 121 to move while driving the circuit board 122 to move.
  • connection between the photosensitive driving device 130 and the circuit board 122 is relatively simple and convenient, and common connection methods such as bonding, abutting, and screwing can be used, which is beneficial to improve the processing and assembly efficiency of the camera module 100.
  • the photosensitive driving device 130 may include a lens barrel 140, and the lens 110 is provided in the lens barrel 140 to cooperate with other components of the camera module 100, such as the photosensitive component 120, to realize the imaging function.
  • the installation position and installation method of the lens 110 in the lens barrel 140 are not restricted, and can be flexibly adjusted according to different camera requirements.
  • the photosensitive driving device 130 further includes a stator 131 and a mover 132 coupled with the stator 131.
  • the stator 131 is the stationary part of the photosensitive driving device 130
  • the mover 132 is the moving part of the photosensitive driving device 130.
  • the stator 131 and the mover 132 are connected in a coupling arrangement.
  • the coupling arrangement means that there is no mechanical connection between the mover 132 and the stator 131, but a certain gap, and the force transmission is realized through the action of a magnetic field, an electric field, and the like. In this way, the force transmission between the mover 132 and the stator 131 is more accurate and efficient, the magnitude or direction of the force can be changed in a short time, and it is convenient to use.
  • the stator 131 is fixedly connected to the lens barrel 140, and the mover 132 is connected to the photosensitive assembly 120.
  • the photosensitive driving device 130 may use a voice coil motor, which is a device that converts electrical energy into mechanical energy and realizes linear motion with a limited swing angle. Because the voice coil motor is a non-commutation type power device, its positioning accuracy depends entirely on the feedback and control system, and has nothing to do with the voice coil motor itself. Using a suitable positioning feedback and sensing device can make the positioning accuracy and acceleration of the voice coil motor reach a very high state, which is beneficial to improve the zoom accuracy and speed of the camera module 100.
  • the stator 131 is the stationary part of the voice coil motor. The stator 131 is disposed in the lens barrel 140 and is fixedly connected to the inner peripheral wall 141 of the lens barrel 140.
  • the lens barrel 140 is generally a hollow cylinder
  • the surface wall of the cylinder facing the center of the hollow portion is the inner peripheral wall 141 of the lens barrel 140.
  • the stator 131 is arranged on the inner peripheral wall 141 of the lens barrel 140 and faces the inside of the lens barrel 140.
  • the mover 132 is the moving part of the voice coil motor.
  • the stator 131 encloses an annular accommodating cavity 133 so that the mover 132 can be inserted into it.
  • the size of the annular accommodating cavity 133 is determined according to the size of the mover 132 and the displacement that the mover 132 needs to move relative to the stator 131. It should be noted that during the movement of the mover 132, the mover 132 does not always remain completely in the annular accommodating cavity 133. The mover 132 only needs to be partially in the annular accommodating cavity 133 to receive the stator 131. The driving force of ⁇ then moves relative to the stator 131.
  • the mover 132 of the voice coil motor includes a coil 1321, 1321 is arranged around in the annular accommodating cavity 133 of the stator 131, and the stator 131 has a magnetic field around it.
  • the coil 1321 when the coil 1321 is energized, the coil 1321 of the mover 132 will generate another magnetic field.
  • the interaction between the magnetic poles in the two different magnetic fields will generate a driving force on the mover 132. Under the action of the driving force, The mover 132 can then move in the annular accommodating cavity 133.
  • Changing the magnitude of the current energized in the coil 1321 can change the magnitude of the driving force, thereby changing the zoom speed of the camera module 100.
  • Changing the positive and negative directions of the current energized in the coil 1321 can change the reverse direction of the driving force, thereby changing the moving direction of the mover 132.
  • the magnetic field of the stator 131 can be generated with the help of a magnet, or can be generated by an energized coil 1321.
  • the stator 131 can adopt a permanent magnet to simplify the structure of the photosensitive driving device 130 and reduce the difficulty of installation.
  • the camera module 100 further includes a bracket 150, one end of the bracket 150 is fixedly connected to the mover 132, and the other end of the bracket 150 is fixedly connected to the surface of the circuit board 122. It can be seen that the bracket 150 plays a role of connection and transmission between the mover 132 and the circuit board 122, and the size, material, shape, etc. of the bracket 150 can be adjusted according to different conditions during actual installation.
  • the bracket 150 is fixedly connected to the circuit board 122 in all directions. Therefore, the bracket 150 and the circuit board 122 jointly define the first An accommodating cavity 152, and the photosensitive chip 121 is disposed in the first accommodating cavity 152. In this way, the photosensitive chip 121 is located in the relatively closed space of the first accommodating cavity 152 in the camera module 100, which can protect the photosensitive chip 121 to a certain extent.
  • the size and shape of the first accommodating cavity 152 are determined according to the photosensitive chip 121, so as to protect the photosensitive chip 121 while reducing the occupation of the internal space of the camera module 100.
  • the camera module 100 further includes a filter 160.
  • the filter 160 is an optical element made of optical materials such as glass or resin.
  • the filter 160 can select the wavelength range of the light irradiated on the photosensitive chip 121.
  • the principle is to isolate a certain wavelength of light and transmit The rest of the band of light. In this way, by adjusting the range of the isolation waveband of the filter 160, it is possible to prevent some stray light from irradiating the photosensitive surface 1211 of the photosensitive chip 121.
  • the band range that needs to be isolated can be adjusted according to different imaging requirements, as is well known to those skilled in the art.
  • the filter 160 is disposed at the position of the first opening 151. In this way, when the light passing through the lens 110 passes through the first opening 151, it also needs to pass through the filter 160 to be irradiated to the photosensitive surface 1211. The stray light is filtered before the imaging effect of the photosensitive chip 121, which effectively improves the imaging quality of the camera module 100.
  • the bracket 150 can also be provided with a boss 153 at the first opening 151, and the boss 153 extends toward the center of the first opening 151. In this way, the filter 160 can be directly fixed on the boss 153.
  • the lens barrel 140 is fixedly connected to the housing and is accommodated in the second accommodating cavity 220, so that the housing 200 can fix and protect the camera module 100.
  • the lens barrel 140 may be fixedly installed on the housing by means of screws, buckles, etc., to facilitate assembly and disassembly.
  • the second accommodating cavity 220 also needs to accommodate other parts or components of the electronic device 10. Therefore, in different types of electronic devices 10, the size and shape of the second accommodating cavity 220 are different. The place is not limited.
  • the housing 200 further has a second opening 210, and the second opening 210 is in communication with the second receiving cavity 220 , The external light passes through the second opening 210 and enters the second accommodating cavity 220 to be irradiated on the lens 110 in the camera module 100 to cooperate with imaging.
  • the electronic device 10 of the present embodiment is provided with a photosensitive driving device 130 capable of driving the photosensitive component 120 to move, and the distance between the photosensitive component 120 and the lens 110 is changed by the movement of the photosensitive component 120 to realize the zoom function of the camera module 100.
  • the driving force requirement of the photosensitive driving device 130 is relatively low. Under the same conditions, the moving efficiency of the photosensitive assembly 120 is relatively high, which facilitates rapid zooming.
  • the space in the electronic device 10 is small, which is beneficial to the arrangement of other parts or components, and the cost of design and installation is low.
  • the proportion of the fixed section 310 and the bending section 320 in the flexible circuit board 300 is not limited by a fixed value, and can be determined according to the degree of bending required. If the degree of bending is small, the bending section 320 can be set shorter, and if the degree of bending is large, the bending section 320 can be set longer.
  • the fixed section 310 and the bending section 320 may be a whole without a clear boundary, and they can be distinguished only by the flexibility of their materials. As shown in FIGS.
  • the photosensitive component 120 of the camera module 100 moves in a direction away from the lens 110, and the bending section 320 correspondingly changes the bending angle with the movement of the photosensitive component 120, which compensates for the The shifted pitch of the component 120 prevents damage to the internal structure of the electronic device 10.

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Abstract

本申请公开了一种摄像模组、感光驱动装置及电子设备,摄像模组包括感光组件和至少一个镜片。感光组件用于感应穿过镜片的光线,感光驱动装置可驱动感光组件向靠近或远离镜片的方向移动,以调节摄像模组的焦距。本申请通过设置感光驱动装置带动感光组件的移动,以来改变感光组件与镜片之间的距离,可实现摄像模组的变焦功能。由于感光组件的重量远小于镜片的重量,因此,对感光驱动装置的驱动力要求较低。同等条件下,对感光组件的移动效率较高,便于实现快速变焦。进一步的,由于镜片不动,摄像模组的视场开口可保持在一个较小的尺寸,即可满足正常的成像需求,对电子设备中的空间占用小,有利于其它部件或组件的设置,设计、安装的成本较低。

Description

一种摄像模组、感光驱动装置及电子设备 技术领域
本申请涉及光学元器件领域,尤其涉及一种摄像模组、感光驱动装置及电子设备。
背景技术
随着科学技术的发展和人们经济水平的不断进步,各种各样的电子设备充斥着人们的生活。其中,具备小型化与轻量化特征的便携式电子设备逐渐受到更多人的青睐,因此,它们所采用的摄像模组也需要同步实现小型化与轻量化。摄像模组在对焦过程中需改变物距或像距,这将增加摄像模组占用的安装空间,相关技术中的电子设备是通过摄像模组中镜片组的移动来实现变焦功能的。
发明内容
本申请提供一种摄像模组、感光驱动装置及电子设备,能够减小变焦时所需的动力,降低对动力装置的要求,进一步的减小视场开口的大小,便于其它部件的设置。
根据本申请的第一个方面,提供了一种摄像模组,包括:
至少一个镜片;
感光组件,用于感应穿过镜片的光线;
感光驱动装置,可驱动感光组件向靠近或远离镜片的方向移动,以调节摄像模组的焦距。
根据本申请的第二个方面,提供了一种感光驱动装置,其特征在于,包括:
镜筒,用于安装镜片;
定子,与镜筒固定连接;
动子,与定子耦合设置,且所述动子用于与感光组件连接以带动所述感光 组件向靠近或远离所述镜片的方向移动。
根据本申请的第三个方面,提供了一种电子设备,包括:
壳体,具有第二开口,壳体限定出第二容纳腔,第二开口与第二容纳腔连通;
如上述的感光驱动装置,感光驱动装置设于第二容纳腔内,且外部光线穿过第二开口照射至镜片。
本申请提供一种摄像模组、感光驱动装置及电子设备,该摄像模组包括镜片、感光组件以及感光驱动装置,该感光驱动装置可驱动感光组件向靠近或远离镜片的方向移动以调节摄像模组的焦距。本申请在摄像模组内设置可驱动感光组件移动的感光驱动装置,通过感光组件的移动来改变其与镜片之间的距离,而镜片与感光组件之间的距离即为像距,像距改变,摄像模组的焦距就随之改变,可实现摄像模组的变焦功能。由于在本申请中镜片不动,感光组件移动,而感光组件的重量远小于镜片的重量,因此,对感光驱动装置的驱动力要求较低。同等条件下,对感光组件的移动效率较高,便于实现快速变焦。进一步的,由于镜片不动,摄像模组的视场开口可保持在一个较小的尺寸,即可满足正常的成像需求,对电子设备中的空间占用小,有利于其它部件或组件的设置,设计、安装的成本较低。
附图说明
为了更清楚地说明本申请实施例或相关技术中的技术方案,下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。
图1为相关技术中的摄像模组在第一状态下的结构剖视图;
图2为相关技术中的摄像模组在第二状态下的结构剖视图;
图3为相关技术的摄像模组中镜片组与视场开口的位置关系示意图
图4为本申请实施例中的感光驱动装置安装于摄像模组中在第一状态下的 结构剖视图;
图5为本申请实施例中的感光驱动装置安装于摄像模组中在第二状态下的结构剖视图;
图6为本申请另一个实施例中的感光驱动装置安装于摄像模组中在第一状态下的结构剖视图;
图7为本申请实施例中的摄像模组各部件爆炸状态下的结构剖视图;
图8为本申请实施例中的电子设备在第一状态下的结构剖视图;
图9为本申请实施例中的电子设备在第二状态下的结构剖视图。
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白,以下结合附图及实施例,对本申请进行进一步详细说明。应当理解,此处所描述的具体实施例仅仅用以解释本申请,并不用于限定本申请。
请参阅图1以及图2,相关技术中的摄像模组100’均是通过移动镜片组110’改变摄像模组100’的物距与像距,并以此来实现变焦。由图1至图2,镜片组110’向远离感光组件120’的方向移动,则摄像模组100’的物距u减小、像距v增大,根据光学成像原理,摄像模组100’的焦距f满足以下关系式:1/f=1/u+1/v,其中,u为摄像模组100’的物距、v为摄像模组100’的像距。调节镜片组110’移动的位移至合适的大小,可使摄像模组100’的焦距f满足使用需求。其缺点是镜片组110’的重量相对较大,移动镜片组110’所需的动力就大,对动力装置的要求高。并且物距u、像距v同时改变,其中一个变大的同时另一个必然减小,为了准确变焦需要经过多次调节来平衡物距u、像距v的变化关系,不利于实现快速变焦。请参阅图3,摄像模组100’上配合镜片组110’开设有视场开口170a、170b,而镜片组110’的视场角是固定的。在变焦的过程中,当镜片组110’向远离视场开口170a、170b的方向移动时(图中视场开口170a距离镜片组110’的距离小,视场开口170b距离镜片组110’的距离大,则由视场开口170a 变化至视场开口170b的情况即相当于镜片组110’向远离视场开口的方向发生了移动),视场开口170b的大小大于视场开口170a的大小,才可满足摄像模组100’的正常成像需求。因此,在相关技术中的电子设备上需要预留一个较大尺寸的视场开口170b才能满足整体的成像需求。这就占用了电子设备中较大的空间,不利于其它部件的设置,设计、安装成本高。
请参阅图4至图7,为了解决上述技术问题,本申请实施例提出一种摄像模组100,该摄像模组100包括镜片110、感光组件120以及感光驱动装置130。镜片110采用玻璃或树脂等光学透明材料制作而成,其具有一个或多个曲面,可改变光线的传播方向,控制配光分布以汇聚光线并最终成像。镜片110按照其外形、功能的不同可以分为凸透镜和凹透镜,本申请中对镜片110的材料、类型、尺寸等均不作限制。摄像模组100中镜片110的数量为至少一个。为了使摄像模组100具有多种不同的光学性能,镜片110的数量通常设置为多个,多个镜片110之间可以采用层叠的方式设置在一起,且多个镜片110可以是相同的,也可以是不同的,本实施例中对此不作限制。
感光组件120用于感应穿过镜片110的光线。感光组件120是摄像模组100中用于成像的关键部件。如本领域技术人员所熟知的,它可以感应穿过镜片110的光线,由此产生光信号,并将光信号转换为电信号传递至摄像模组100中其它的部件或组件,以便最终生成图像。因此,感光组件120与镜片110之间不需要直接的物理接触,只要感光组件120能够直接或间接感应到由镜片110照射过来的光线即可。例如,可以是感光组件120的其中一个表面作为感应面被镜片110中投射的光线所照射。感光组件120的大小、类型均不限,本领域中具有以上功能的感光组件120均满足要求。
感光驱动装置130可驱动感光组件120向靠近或远离镜片110的方向移动。顾名思义,感光驱动装置130是具有动力且能够带动感光组件120移动的装置,感光驱动装置130可以采用电力驱动、内燃机驱动、磁力驱动等,本领域中常见的驱动类型均满足使用需求。而感光驱动装置130与感光组件120之间,只要存在力的传递即可实现驱动作用。也就是说,感光驱动装置130与感光组件 120之间可以采用如粘接、抵接、螺接等常见的直接连接方式,也可以没有直接的连接,而通过磁场、电场等来进行力的传递。感光驱动装置130给予感光组件120的动力大小根据感光组件120运动所需克服的阻力大小来确定,此处不作限定。而感光驱动装置130驱动感光组件120移动的方向只要能够靠近或远离镜片110,起到改变摄像模组100的焦距f的效果即可,并不限定于某一个具体的方向。根据光学成像原理,摄像模组100的焦距f满足以下关系式:1/f=1/u+1/v。感光组件120向靠近镜片110的方向移动时,在其它条件不变的情况下,物距u不变,像距v减小,则摄像模组100的焦距f减小。感光组件120向远离镜片110的方向移动时,在其它条件不变的情况下,物距u不变,像距v增大,则摄像模组100的焦距f增大。由此,可以实现对摄像模组100的焦距f的调节。
本申请在摄像模组100内设置可驱动感光组件120移动的感光驱动装置130,通过感光组件120的移动来改变其与镜片110之间的距离,而镜片110与感光组件120之间的距离即为像距v,像距v改变,摄像模组100的焦距f就随之改变,可实现摄像模组100的变焦功能。由于在本申请中镜片110不动,感光组件120移动,而感光组件120的重量远小于镜片110的重量,因此,对感光驱动装置130的驱动力要求较低。同等条件下,对感光组件120的移动效率较高,便于实现快速变焦。并且,由于镜片110不动,摄像模组100的视场开口可保持在一个较小的尺寸,即可满足正常的成像需求,对电子设备10中的空间占用小,有利于其它部件或组件的设置,设计、安装的成本较低。
为了提升对摄像模组100焦距f改变的效率,同时也为了节省摄像模组100内部的空间,在一个实施例中,感光驱动装置130带动感光组件120沿平行于镜片110的光轴111的方向移动。光轴111是摄像模组100中通过镜片110中心的线,无论镜片110是凸透镜或凹透镜,在光轴111位置处照射至镜片110的光线不会发生光学特性的变化,即光线会继续沿原方向射出。令感光驱动装置130带动感光组件120沿平行于镜片110的光轴111方向移动,这样,感光组件120相对于镜片110移动了多少,摄像模组100的像距v就改变多少,而 不会在其它方向上产生分量。在感光驱动装置130对感光组件120的驱动速度一定的情况下,此时的调节效率最高。并且,也只会在感光组件120的移动方向上占用空间,不会产生额外的空间占用,节省了摄像模组100的内部空间。
如上文中所述,感光组件120可以接收穿过镜片110的光线,由此产生光信号,并将光信号转换为电信号传递至摄像模组100中其它的部件或组件,以便最终生成图像。具体地,在一个实施例中,感光组件120包括感光芯片121以及电路板122。其中,感光芯片121接收穿过镜片110的光线,由此产生光信号,并将光信号转换为电信号。而电路板122则连接感光芯片121与摄像模组100中其它的部件或组件,并将感光芯片121中的电信号传递出去。感光芯片121固定于电路板122且与电路板122电性连接,感光芯片121与电路板122的连接方式可以有多种。例如,可以在电路板122与感光芯片121之间设置粘接层,通过粘接层将感光芯片121粘接到电路板122表面。也可以在感光芯片121上设置连接件,而在电路板122上设置与该连接件对应的安装孔来将感光芯片121固定至电路板122表面。还可以在电路板122上开设安装槽,采用粘接剂将感光芯片121固定至安装槽的底壁或侧壁上,以节省电路板122的厚度方向上的空间占用。以上连接方式可以根据实际结构特征灵活选用。
其中,感光芯片121包括感光面1211。感光面1211是感光芯片121的其中一个表面,该表面上通过涂覆或混合等方式设置有感光材料,感光材料可在光线照射下发生特定的变化而实现产生光信号,并将光信号转换为电信号的作用。穿过镜片110的光线照射至感光面1211以此配合实现摄像模组100的成像功能。由于感光芯片121固定于电路板122,因此,感光驱动装置130只需与电路板122连接就可以在带动电路板122移动的同时带动感光芯片121移动。这样,也可以避免感光芯片121因直接与感光驱动装置130相连而出现损坏的情况,对感光芯片121起到了一定的保护作用。并且,感光驱动装置130与电路板122的连接也相对较简单、方便,可以采用如粘接、抵接、螺接等常见的连接方式,有利于提高摄像模组100的加工、组装效率。
在一个实施例中,感光驱动装置130可包括镜筒140,镜片110内设于镜 筒140,以配合安装摄像模组100的其它部件,如感光组件120等实现成像的功能。镜片110在镜筒140内的安装位置、安装方式等不作限制,可依据不同的摄像需求进行灵活调整。与此同时,为了以更高的精度与效率来驱动感光组件120的移动,感光驱动装置130还包括定子131以及与定子131耦合设置的动子132。顾名思义,定子131就是感光驱动装置130中静止不动的部分,与之相对的,动子132则是感光驱动装置130中运动的部分,定子131与动子132之间采用耦合设置的方式连接。耦合设置是指动子132与定子131之间没有机械连接,而是具有一定的间隙,通过磁场、电场等的作用来实现力的传递。这种方式使动子132与定子131之间的力的传递更加精确与高效,可在很短的时间内改变力的大小或方向,使用方便。其中,定子131与镜筒140固定连接,动子132与感光组件120连接,这样,当动子132相对于定子131移动时,动子132可以带动感光组件120相对于镜筒140移动,而镜片110固定设置于镜筒140内,则感光组件120就相对于镜片110移动,以实现对摄像模组100的焦距f的调节。
在一个实施例中,感光驱动装置130可以采用音圈马达,音圈马达是一种将电能转化为机械能的装置,并实现直线型及有限摆角的运动。因为音圈马达是一种非换流型动力装置,其定位精度完全取决于反馈及控制系统,与音圈马达本身无关。采用合适的定位反馈及感应装置可以使音圈马达的定位精度及加速度达到非常高的状态,有利于提高摄像模组100的变焦精度与速度。如上文中所述的,定子131就是音圈马达中静止不动的部分,定子131设置于镜筒140内且与镜筒140的内周壁141面固定连接。由于镜筒140通常为中空的圆柱体,该圆柱体朝向中空部分的中心处的表壁即为镜筒140的内周壁141。而定子131就设置在镜筒140的内周壁141面上并朝向镜筒140内部。
而动子132则是音圈马达中运动的部分,为了便于动子132与定子131的连接,定子131围设出环形容纳腔133以便将动子132套设进去。环形容纳腔133的大小根据动子132的大小及动子132相对定子131需要移动的位移来确定。需要说明的是,在动子132的运动过程中,动子132并不是一直保持完全 处于环形容纳腔133内的,动子132只需要有部分处在环形容纳腔133内即可接收到定子131的驱动力进而相对定子131移动。为了对动子132的位移设置一定的限制从而避免动子132脱离出镜筒140,动子132设置于环形容纳腔133内且与镜筒140的内周壁141活动连接。这样,动子132就会镜筒140的作用力而不会脱离镜筒140。在本实施例中,可以采用若干个弹片将动子132的上下两端分别与镜筒140的内周壁141连接,弹片具有一定的弹性,在动子132移动时可以伸长或缩短,不会影响动子132正常范围内的移动,同时可以避免动子132脱离镜筒140。如图所示,由图4至图5,摄像模组100的感光组件120向远离镜片110的方向移动,弹片发生一定程度的形变。
在一个实施例中,请参阅图6,镜筒140的内周壁141上朝向环形容纳腔133凸出设置有限位部142。在动子132的移动过程中,限位部142可以阻挡动子132,使动子132无法越过限位部142而继续运动,因此,通过合理调整限位部142与动子132之间的位置关系,可以使动子132只在某个确定范围内移动,由此使摄像模组100的变焦效果也在一个确定、可控的范围之内。根据需要,可以分别在动子132的移动行程上的两个不同方向的极限位置处设置限位部142。而限位部142的材质、大小、形状及其与镜筒140的内周壁141之间的连接方式均可以根据使用情况的不同灵活调整,此处不作限定。
由于音圈马达的工作原理是利用磁场与通电线圈1321导体产生的磁场中磁极间的相互作用产生有规律的运动,因此,在本实施例中,音圈马达的动子132包括线圈1321,线圈1321环绕设置于定子131的环形容纳腔133内,而定子131的周围具有磁场。这样,当线圈1321通电后,动子132的线圈1321会产生另一个磁场,两个不同的磁场中磁极间的相互作用就会对动子132产生一个驱动力,在该驱动力的作用下,动子132就可以在环形容纳腔133内移动。而改变线圈1321内通电的电流大小,可以使该驱动力的大小发生改变,从而改变摄像模组100变焦的速度。该驱动力越大,动子132移动越快,摄像模组100的变焦就越快。相反的,该驱动力越小,动子132移动越慢,摄像模组100的变焦就越慢。而改变线圈1321内通电的电流正负方向,可以使该驱动力的反向 发生改变,进而改变动子132的移动方向。定子131的磁场可以借助磁体来产生,也可以采用通电线圈1321来产生,在本实施例中,由于动子132已通过线圈1321来产生磁场,只需要调整动子132的线圈1321中电流的大小或方向,就可以改变动子132的运动速度或方向,因此,定子131可以采用永磁体,以此来简化感光驱动装置130的结构并降低其安装难度。
而动子132在与定子131配合的情况下还需要连接电路板122以带动感光芯片121的移动,因此,为了减小动子132的大小以降低动子132的加工难度及其与定子131的配合难度,在一个实施例中,摄像模组100还包括支架150,该支架150的一端与动子132固定连接,支架150的另一端与电路板122的表面固定连接。可见,支架150在动子132与电路板122之间起到了一个连接、传递的作用,支架150的大小、材质、形状等均可以根据实际安装时的不同情况加以调整。为了使支架150更牢固,且对电路板122的驱动效果更稳定,本实施例中,支架150在各个方向上均与电路板122固定连接,由此,支架150与电路板122共同限定出第一容纳腔152,感光芯片121设于第一容纳腔152内。这样,感光芯片121在摄像模组100中就处于第一容纳腔152这个相对封闭的空间内,可以对感光芯片121起到一定的保护作用。第一容纳腔152的大小及形状均根据感光芯片121来确定,以便在保护感光芯片121的同时减少对摄像模组100内部空间的占用。在此基础上,为了能够让穿过镜片110的光线照射至感光芯片121的感光面1211上而不被阻挡,还需要在支架150与动子132固定连接的一端开设第一开口151,第一开口151与第一容纳腔152连通,穿过镜片110的光线穿过第一开口151照射至感光面1211。这样,感光芯片121的正常使用就不会受到到影响。第一开口151的大小及形状可以与感光芯片121对应设置,以便让感光芯片121的感光面1211尽可能多的暴露在镜片110下,提升感光芯片121的工作效率。
在一个实施例中,为了提升摄像模组100的成像质量,避免受到成像所不需要的杂光的干扰,摄像模组100还包括滤光件160。滤光件160是采用玻璃或树脂等光学材料制作而成的光学元件,滤光件160可以选取照射到感光芯片 121上的光线的波段范围,其原理是隔绝某一波段的光线,而透过其余波段的光线。这样,通过调整滤光件160的隔绝波段的范围,就可以避免某一些杂光照射到感光芯片121的感光面1211上。而需要隔绝的波段范围,如本领域技术人员所熟知的,可以根据不同的成像需求进行调整。在本实施例中,该滤光件160设置于第一开口151位置处。这样,穿过镜片110的光线在穿过第一开口151时,还需要穿透滤光件160才能照射至感光面1211。在感光芯片121的成像作用前就对杂光进行了过滤,有效地提升了摄像模组100的成像质量。
同感光芯片121与电路板122的连接方式类似,滤光件160与支架150的第一开口151处的连接方式也有多种。例如,可以采用粘接剂将滤光件160固定至第一开口151的顶壁或侧壁上,以节省支架150的第一开口151处在厚度方向上的空间占用。在一个实施例中,还可以令支架150在第一开口151处设有凸台153,且该凸台153向第一开口151的中心方向延伸。这样,就可以直接将滤光件160固定设置于凸台153上。通过改变凸台153的大小至合适数值,可以直接将滤光件160卡接在凸台153上,以此,可以在避免滤光件160脱落的前提下,降低滤光件160的固定安装难度,同时也便于滤光件160的更换以实现摄像模组100不同的滤光需求。在其它实施例中,为了提升滤光件160的固定牢靠程度,还可以采用胶接、螺接等常见的连接方式来对滤光件160进行固定。
请参阅图8至图9,本申请实施例还提出一种电子设备10,该电子设备10包括壳体200以及如上文中所述的摄像模组100。电子设备10是具有获取图像功能的任一设备,例如可以是手机、平板电脑、笔记本电脑、个人数位助理、智能手环、智能手表等穿戴式设备中的任意一种,摄像模组100配合电子设备10实现对目标对象的图像采集和再现。在该电子设备10中,为了固定以及容纳摄像模组100,壳体200限定出第二容纳腔220,摄像模组100设于第二容纳腔220内。镜筒140与壳体固定连接并容置于第二容纳腔220内,使壳体200可对摄像模组100起到固定以及保护的作用。例如,镜筒140可采用螺牙、卡扣等方式固定安装于壳体上,以便于组装和拆卸。第二容纳腔220除了容纳摄 像模组100外,还需要容纳电子设备10的其它部件或组件,因此,在不同种类的电子设备10中,第二容纳腔220的大小及形状均不相同,此处不作限定。
为了能够让外部光线穿过镜片110并最终照射至感光芯片121的感光面1211上而不被阻挡,该壳体200还具有第二开口210,且该第二开口210与第二容纳腔220连通,则外部光线穿过第二开口210后进入到第二容纳腔220内就可以照射至摄像模组100中的镜片110上,以配合成像。本实施例的电子设备10中设置可驱动感光组件120移动的感光驱动装置130,通过感光组件120的移动来改变其与镜片110之间的距离,可实现摄像模组100的变焦功能。对感光驱动装置130的驱动力要求较低。同等条件下,对感光组件120的移动效率较高,便于实现快速变焦。并且对电子设备10中的空间占用小,有利于其它部件或组件的设置,设计、安装的成本较低。
由于在电子设备10中,感光组件120还需要与其它的部件或组件电连接以传输电信号并最终实现成像功能,因此,为了避免感光组件120在移动时带动其它部件或组件移动而对电子设备10的内部结构造成破坏,在一个实施例中,电子设备10还包括柔性电路板300,该柔性电路板300具有固定段310以及弯折段320。柔性电路板300(FPC,Flexible Printed Circuit)是以聚酰亚胺或聚脂薄膜为基材制成的一种具有高度可靠性,绝佳的可挠性印刷电路板。它具有配线密度高、重量轻、厚度薄、弯折性好的特点。因此,可以使该柔性电路板300的固定段310与壳体200固定连接,而弯折段320与感光组件120固定连接。这样,在感光组件120被感光驱动装置130所驱动而移动时,弯折段320就会随着感光组件120的移动而改变弯折角度,补偿了因感光组件120的移动而发生变化的间距,使与感光组件120电连接的其它部件或组件不至于被带动移动,避免了对电子设备10的内部结构造成破坏。固定段310是柔性电路板300中柔性较低,不易弯折的部分,而弯折段320是柔性电路板300中柔性较高,易产生弯折的部分。固定段310与弯折段320在柔性电路板300中所占的比例并没有固定的数值限制,可以根据需要弯折的程度来确定。需要弯折的程度小,就可以将弯折段320设置得较短,而需要弯折的程度大,就可以将弯折 段320设置得较长。并且,固定段310与弯折段320之间可以是一个整体而没有明显的分界,仅仅依靠其材质的柔性不同来区分。如图7至图8所示,摄像模组100的感光组件120向远离镜片110的方向移动,则弯折段320相应地随着感光组件120的移动而改变了弯折角度,补偿了因感光组件120的移动而发生变化的间距,避免了对电子设备10的内部结构造成破坏。
在一个实施例中,为了避免第二开口210直接与外部连通,而造成外部的灰尘等杂物进入到电子设备10中影响其使用性能,电子设备10还包括保护片400,该保护片400覆盖第二开口210。这样,保护片400就可以将第二开口210与外部隔绝起来,避免外部的灰尘等杂物进入到电子设备10中影响其使用性能。同时,为了不影响摄像模组100的成像功能,保护片400不能遮挡照射至摄像模组100的光线,因此,保护片400透光。即该保护片400需要采用可透光的材料来制作。
本实施例的附图中相同或相似的标号对应相同或相似的部件;在本申请的描述中,需要理解的是,若有术语“上”、“下”、“左”、“右”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本申请和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此附图中描述位置关系的用语仅用于示例性说明,不能理解为对本专利的限制,对于本领域的普通技术人员而言,可以根据具体情况理解上述术语的具体含义。
以上所述仅为本申请的较佳实施例而已,并不用以限制本申请,凡在本申请的精神和原则之内所作的任何修改、等同替换和改进等,均应包含在本申请的保护范围之内。

Claims (19)

  1. 一种摄像模组,其特征在于,包括:
    至少一个镜片;
    感光组件,用于感应穿过所述镜片的光线;
    感光驱动装置,可驱动所述感光组件向靠近或远离所述镜片的方向移动,以调节所述摄像模组的焦距。
  2. 如权利要求1所述的摄像模组,其特征在于,
    所述感光驱动装置带动所述感光组件沿平行于所述镜片的光轴的方向移动。
  3. 如权利要求1所述的摄像模组,其特征在于,
    所述感光组件包括感光芯片以及电路板,所述感光芯片固定于所述电路板且与所述电路板电性连接;
    其中,所述感光芯片包括感光面,穿过所述镜片的光线照射至所述感光面,所述感光驱动装置与所述电路板连接以带动所述感光芯片移动。
  4. 一种感光驱动装置,其特征在于,包括:
    镜筒,用于安装镜片;
    定子,与所述镜筒固定连接;
    动子,与所述定子耦合设置,且所述动子用于与感光组件连接以带动所述感光组件向靠近或远离所述镜片的方向移动。
  5. 如权利要求4所述的感光驱动装置,其特征在于,
    所述定子设置于所述镜筒内且与所述镜筒的内周壁面固定连接。
  6. 如权利要求5所述的感光驱动装置,其特征在于,
    所述定子围设出环形容纳腔,所述动子设置于所述环形容纳腔内且与所述镜筒的内周壁活动连接。
  7. 如权利要求6所述的感光驱动装置,其特征在于,
    所述镜筒的内周壁上朝向所述环形容纳腔凸出设置有限位部,所述限位部位于所述动子的移动行程上以防止所述动子脱离所述环形容纳腔。
  8. 如权利要求6所述的感光驱动装置,其特征在于,所述感光驱动装置还包括弹片,所述动子通过所述弹片与所述镜筒的内周壁连接。
  9. 如权利要求8所述的感光驱动装置,其特征在于,所述弹片的数量为多个,多个所述弹片分别与所述动子的上下两端连接。
  10. 如权利要求6所述的感光驱动装置,其特征在于,
    所述动子包括线圈,所述线圈环绕设置于所述环形容纳腔内;
    当所述线圈通电后,所述定子产生的磁场可驱动所述动子在所述环形容纳腔内移动。
  11. [根据细则91更正 02.03.2021]
    如权利要求10所述的感光驱动装置,其特征在于,
    所述定子为永磁体或电磁体。
  12. [根据细则91更正 02.03.2021]
    如权利要求4所述的感光驱动装置,其特征在于,还包括:
    支架,所述支架的一端与所述动子固定连接,且所述支架在与所述动子固定连接的一端开设有第一开口,所述支架的另一端用于与所述感光组件固定连接;
    其中,所述支架限定出用于容纳所述感光组件的第一容纳腔,所述第一开口与所述第一容纳腔连通,穿过所述镜片的光线穿过所述第一开口照射至所述 感光组件。
  13. [根据细则91更正 02.03.2021]
    如权利要求12所述的感光驱动装置,其特征在于,还包括:
    滤光件,所述滤光件设置于所述第一开口位置处。
  14. [根据细则91更正 02.03.2021]
    如权利要求13所述的感光驱动装置,其特征在于,
    所述支架在所述第一开口处设有向所述第一开口的中心方向延伸的凸台,所述滤光件固定设置于所述凸台上。
  15. [根据细则91更正 02.03.2021] 
    如权利要求14所述的感光驱动装置,其特征在于,所述滤光件卡接于所述凸台。
  16. [根据细则91更正 02.03.2021]
    一种电子设备,其特征在于,包括:
    壳体,具有第二开口,所述壳体限定出第二容纳腔,所述第二开口与所述第二容纳腔连通;
    如权利要求4至15中任一项所述的感光驱动装置,所述感光驱动装置设于所述第二容纳腔内,且外部光线穿过所述第二开口照射至所述镜片。
  17. [根据细则91更正 02.03.2021]
    如权利要求16所述的电子设备,其特征在于,还包括:
    柔性电路板,所述柔性电路板具有固定段以及弯折段,所述固定段与所述壳体固定连接,所述弯折段与所述感光组件固定连接,且所述弯折段可随所述感光组件的移动而改变弯折角度。
  18. [根据细则91更正 02.03.2021]
    如权利要求16所述的电子设备,其特征在于,还包括:
    保护片,所述保护片透光,且所述保护片覆盖所述第二开口。
  19. [根据细则91更正 02.03.2021] 
    如权利要求16所述的电子设备,其特征在于,所述镜筒与所述壳体固 定连接。
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CN114390183A (zh) * 2022-02-17 2022-04-22 维沃移动通信有限公司 摄像装置及电子设备
CN114726982A (zh) * 2022-03-18 2022-07-08 联想(北京)有限公司 一种摄像头模组与电子设备
CN114726982B (zh) * 2022-03-18 2023-12-26 联想(北京)有限公司 一种摄像头模组与电子设备
CN114666484A (zh) * 2022-04-19 2022-06-24 Oppo广东移动通信有限公司 摄像模组和电子装置
CN116437175A (zh) * 2023-06-13 2023-07-14 南昌欧菲光电技术有限公司 摄像模组及电子设备
CN116437175B (zh) * 2023-06-13 2023-09-22 南昌欧菲光电技术有限公司 摄像模组及电子设备

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