WO2022170961A1 - 可伸缩摄像模组及电子设备 - Google Patents

可伸缩摄像模组及电子设备 Download PDF

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Publication number
WO2022170961A1
WO2022170961A1 PCT/CN2022/073681 CN2022073681W WO2022170961A1 WO 2022170961 A1 WO2022170961 A1 WO 2022170961A1 CN 2022073681 W CN2022073681 W CN 2022073681W WO 2022170961 A1 WO2022170961 A1 WO 2022170961A1
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WO
WIPO (PCT)
Prior art keywords
camera module
retractable
sleeve
driving element
piezoelectric sheet
Prior art date
Application number
PCT/CN2022/073681
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English (en)
French (fr)
Inventor
王明珠
戎琦
阙嘉耀
黄桢
陈卓
Original Assignee
宁波舜宇光电信息有限公司
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Application filed by 宁波舜宇光电信息有限公司 filed Critical 宁波舜宇光电信息有限公司
Publication of WO2022170961A1 publication Critical patent/WO2022170961A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/50—Constructional details
    • H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B5/00—Adjustment of optical system relative to image or object surface other than for focusing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/57—Mechanical or electrical details of cameras or camera modules specially adapted for being embedded in other devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals

Definitions

  • the invention relates to a lens, in particular to a retractable camera module and an electronic device.
  • a miniaturized and lightweight camera module is an indispensable component.
  • at least one camera module is configured on a portable terminal body.
  • higher requirements are put forward for the characteristics of camera modules, such as high pixels and high frame rates, which is an irreversible development trend of existing camera modules.
  • the camera module equipped with mobile phone terminals to achieve multiple zoom shooting, and multiple zoom shooting is achieved by configuring at least one telephoto module, but as the multiple increases, the telephoto module's The total focal length is also required to be larger, which leads to a higher height of the camera module.
  • most of the periscope modules are currently used, that is, the height is reduced by setting the light conversion element and changing the optical path.
  • the cost of the periscope module is high and the assembly is difficult. Therefore, for some camera modules Periscope mods are not applicable. If the periscope module is not used, the size of the module will be too large, which does not meet the needs of the terminal.
  • One object of the present invention is to provide a retractable camera module and an electronic device, which can realize the multi-fold zoom function of the camera module by driving the optical lens through piezoelectric elements, which meets the height requirement of the terminal.
  • Another object of the present invention is to provide a retractable camera module and electronic equipment, which can effectively rotate the retractable sleeve to raise or lower the optical lens through the cooperation of the retractable sleeve and the driving element, which is convenient to operate.
  • a retractable camera module includes an optical lens, a retractable assembly and a photosensitive assembly, the optical lens is maintained on the optical path of the photosensitive assembly, and the retractable assembly includes A driving element and a retractable sleeve, the driving element is arranged between the photosensitive assembly and the retractable sleeve, the optical lens is installed in the retractable sleeve, the driving element and the retractable sleeve are There is a pre-tightening force between the telescopic sleeves in the direction of the central axis, so that the telescopic sleeve can be driven to rotate, so that the telescopic sleeve drives the optical lens to rise or fall.
  • the telescopic sleeve includes a plurality of sleeve units, the sleeve units are nested with each other, and a guide rail is provided between two adjacent sleeve units, and the guide rails Spiral.
  • the single sleeve is provided with an outer sleeve and at least one inner sleeve.
  • the inner sleeve spirals upward or downward along the guide rail. .
  • the telescopic sleeve and the driving element are arranged from top to bottom along the optical axis direction, and the central axis of the telescopic sleeve, the central axis of the driving element and the photosensitive element of the photosensitive assembly The central axes of the chips are aligned, and the driving element is electrically connected to the circuit board of the photosensitive component.
  • the driving element is a ring-shaped piezoelectric element, and when the driving element is deformed, friction is generated between the driving element and the retractable sleeve, so that the outer sleeve rotates continuously .
  • the upper surface of the driving element and the lower surface of the outer sleeve of the telescopic sleeve are connected by an adhesive layer, and the adhesive layer is an adhesive layer of a flexible material.
  • the optical lens includes at least one lens barrel and at least one optical lens installed in the lens barrel, the optical lens is installed in the lens barrel, and the effective focal length of the optical lens is 19mm-29mm .
  • the effective focal length of the optical lens is 27mm ⁇ 29mm.
  • the minimum height range of the camera module is 8mm-11mm, and the maximum height range of the camera module is 23mm-26mm.
  • the minimum height range of the camera module is 9mm-10mm, and the maximum height range of the camera module is 24mm-25mm.
  • the minimum height range of the camera module is 9mm-12mm, and the maximum height range of the camera module is 28mm-32mm.
  • the minimum height range of the camera module is 10mm-11mm, and the maximum height range of the camera module is 29mm-31mm.
  • the driving element includes at least one piezoelectric sheet A, a piezoelectric sheet B and a spacer C, wherein the piezoelectric sheet A and the piezoelectric sheet B are symmetrically distributed on both sides of the driving element , the spacer C is arranged between the piezoelectric sheet A and the piezoelectric sheet B, and is divided into two regions by the piezoelectric sheet A and the piezoelectric sheet B, and the two spaced regions are symmetrically distributed , when the driving chip of the driving element applies a forward voltage to the driving element, the retractable sleeve rotates clockwise to drive the optical lens to rise. When a negative voltage is applied to the element, the retractable sleeve rotates counterclockwise to drive the optical lens down.
  • the piezoelectric sheet A and the piezoelectric sheet B have different wavelengths by half a wavelength, and the polarization direction of the piezoelectric sheet A is set to be opposite to the polarization direction of the piezoelectric sheet B.
  • the polarization directions of two adjacent piezoelectric sheets are opposite, one of the piezoelectric sheets shrinks, and the adjacent piezoelectric sheet elongates, and the two piezoelectric bodies vibrate with standing waves respectively, and the two piezoelectric sheets respectively vibrate.
  • the vibration wave synthesized by the standing wave vibration of the piezoelectric body is a traveling wave that progresses with time.
  • the piezoelectric sheet A is composed of several piezoelectric sheets, wherein the polarization directions of the two piezoelectric sheets spaced apart in the piezoelectric sheet A area are the same, and the piezoelectric sheet A in the area Several piezoelectric sheets whose polarization direction is "+” are connected in series with the circuit board through pin A1, and several piezoelectric sheets whose polarization direction is "-" in the area of said piezoelectric sheet A are connected in series through pin A2 to the circuit board.
  • an electroplated metal material layer is provided on the surface of the driving element for electrical connection with the circuit board.
  • An electronic device includes the above-mentioned retractable camera module.
  • FIG. 1 is a structural perspective view of a retractable camera module according to an embodiment of the present application.
  • FIG. 2 is an exploded view of a camera module according to an embodiment of the present application.
  • FIG. 3 is a structural perspective view of a telescopic sleeve according to an embodiment of the present application
  • FIG. 4 is a polarization distribution diagram of a driving element according to an embodiment of the present application.
  • 5 is a camera module according to an embodiment of the present application.
  • optical lens 20
  • telescopic assembly 21, driving element; 23, retractable sleeve; 231, sleeve monomer; 232 guide rail; 233, inner sleeve; 234, outer sleeve; 235, middle Sleeve; 30, photosensitive assembly; 31, photosensitive chip; 32, circuit board; 40, outer frame.
  • orientation words such as the terms “center”, “horizontal”, “longitudinal”, “length”, “width”, “thickness”, “upper”, “lower” , “Front”, “Back”, “Left”, “Right”, “Vertical”, “Horizontal”, “Top”, “Bottom”, “Inside”, “Outside”, “Clockwise”, “Counterclockwise” ” and the like indicating the orientation and positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation or a specific orientation. The structure and operation should not be construed as limiting the specific protection scope of the present invention.
  • the terms “arranged”, “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection, It can also be a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, a contact connection or an indirect connection through an intermediate medium, and it can be internal communication between two components.
  • the specific meanings of the above terms in the present invention can be understood according to specific situations.
  • a retractable camera module is provided. As shown in FIG. 1 to FIG. 5 , the retractable camera module includes an optical lens 10 , a retractable component 20 and a photosensitive component 30 . The lens 10 is maintained on the optical path of the photosensitive assembly 30 .
  • the telescopic assembly 20 includes a driving element 21 and a telescopic sleeve 23 , and the driving element 21 is disposed on the photosensitive assembly 30 and the telescopic sleeve 23 In between, the optical lens 10 is installed in the retractable sleeve 23, and there is a pre-tightening force between the driving element 21 and the retractable sleeve 23 in the direction of the central axis, so as to drive the retractable sleeve The barrel 23 rotates, so that the retractable sleeve 23 drives the optical lens 10 to ascend or descend.
  • the retractable sleeve 23 is driven to rotate by the driving element 21, so that the retractable sleeve 23 shrinks inwardly or extends outwardly, thereby automatically adjusting the distance between the optical lens 10 and the photosensitive assembly 30
  • the relative positional relationship between them can realize the automatic zooming of the camera module.
  • the optical lens 10 includes at least one lens barrel and at least one optical lens installed in the lens barrel.
  • the optical lens 10 may be composed of a plurality of lens components, and the number may be more than 2.
  • the effective focal length of the optical lens 10 is 19mm ⁇ 29mm.
  • the effective focal length of the optical lens 10 is 27mm ⁇ 29mm.
  • the photosensitive component 30 includes a photosensitive chip 31, a circuit board 32, a bracket, a filter element and electronic components, the filter element is installed in the bracket, and the bracket is electrically connected to the bracket
  • the circuit board 32 , the photosensitive chip 31 and the electronic components are electrically connected to the front surface of the circuit board 32 , and the electronic components are arranged around the photosensitive chip 31 .
  • the photosensitive component 30 may further include a molding body, the molding body is used to cover the electronic component (MOB) and part of the photosensitive area (MOC), and the circuit board 32 is used as the photosensitive component 30 .
  • the bracket can be selectively fixed to one of the circuit board 32 , the molded body and the non-photosensitive area of the photosensitive chip 31 by adhesive bonding.
  • the optical lens may be a conventional plastic lens or a glass lens, or may be a lens with a protrusion, for example, the outermost optical lens has a protrusion with a smaller diameter to extend into the display screen In the small hole, the installation of the camera module and the display screen can be realized, and the installation method can reduce the distance from the imaging element (lens) of the camera module to the opening on the upper end of the display screen, and increase the effectiveness of the camera module.
  • the angle of field of view ensures that the camera module has sufficient incoming light; at the same time, it helps to embed a part of the camera module into the display screen, reducing the volume of the module left in other positions in the terminal equipment, reducing the
  • the installation space reserved for the camera module by the small terminal device meets the miniaturization requirements of the terminal device for the camera module. That is to say, the upper end surface of the retractable camera module can be higher than the back surface of the terminal device, but the protruding height cannot be too large, which can generally be controlled between 0mm and 5mm.
  • the telescopic sleeve 23 and the driving element 21 are arranged from top to bottom along the optical axis direction, and the central axis of the telescopic sleeve 23, the central axis of the driving element 21 and the The central axis of the photosensitive chip 31 is aligned, the driving element 21 is electrically connected to the circuit board 32 of the photosensitive chip 31, the optical lens 10 is mounted on the upper end or the middle of the retractable sleeve 23, the The optical lens 10 can move together with the telescopic sleeve 23 , so that the camera module is in a working state or a non-working state. Through the telescopic assembly 20 , the optical lens 10 can be relative to the photosensitive chip 31 .
  • the telescopic movement can be switched between the retracted state and the extended state, wherein, when the camera module is in the extended state, the retractable sleeve 23 is driven and extended outward relative to the photosensitive chip 31, so as to be able to Drive the optical lens 10 to move upward relative to the photosensitive chip 31 to increase the distance between the optical lens 10 and the photosensitive chip 31; when the camera module is in a retracted state, the retractable The sleeve 23 is driven and retracted inward relative to the photosensitive chip 31 to drive the optical lens 10 to move downward relative to the photosensitive chip 31 to reduce the distance between the optical lens 10 and the photosensitive chip 31 . distance between.
  • the stretched state is a working state
  • the retracted state is a non-working state, so that the optical lens 10 can be driven to rise and fall by the telescopic assembly 20, which is beneficial to increase the back focus, ensure the image quality, and reduce the overall
  • the height of the camera module is beneficial to the miniaturization of the camera module.
  • the retractable camera module further includes an outer frame 40, the photosensitive assembly 30 and the telescopic assembly 20 are accommodated in the outer frame 40, the outer frame 40 is provided with a light-transmitting hole, and the transparent The central axis of the light hole is flush with the central axis of the telescopic sleeve 23 .
  • the minimum height of the camera module ranges from 8mm to 11mm, preferably , the minimum height range of the camera module is 9mm ⁇ 10mm; when the camera module is in the extended state, the maximum height range of the camera module is 23mm ⁇ 26mm, preferably, the maximum height of the camera module The height range is 24mm ⁇ 25mm.
  • the minimum height of the camera module ranges from 9mm to 12mm, preferably , the minimum height range of the camera module is 10mm ⁇ 11mm; when the camera module is in the extended state, the maximum height range of the camera module is 28mm ⁇ 32mm, preferably, the maximum height of the camera module The height range is 29mm to 31mm.
  • the telescopic sleeve 23 includes a plurality of sections of the sleeve monomers 231, the sleeve monomers 231 are nested with each other, and a guide rail 232 is provided between two adjacent sleeve monomers 231, and the guide rails 232 is helical, the sleeve unit 231 is provided with an outer sleeve 234 and at least one inner sleeve 233, when the outer sleeve 234 rotates, the inner sleeve 233 spirals upward along the guide rail 232 Or spiral downward.
  • the inner sleeve 233 may be one or multiple.
  • the single sleeve 231 is provided with an outer sleeve 234 and an inner sleeve 233.
  • the guide rails 232 are arranged on the inner surface of the outer sleeve 234 and the outer surface of the inner sleeve 233 .
  • the inner sleeve 233 is guided by the guide rails 232
  • the upward spiral movement or downward spiral movement drives the optical lens 10 in the inner sleeve 233 to rise or fall;
  • the single sleeve 231 is provided with an outer sleeve 234 At least one middle sleeve 235 and one innermost sleeve 233, the guide rail 232 is arranged between the outer sleeve 234 and the adjacent middle sleeve 235, and the adjacent middle sleeve 235 and A guide rail 232 is also provided between the innermost sleeves 233 .
  • the driving element 21 is a ring-shaped piezoelectric element, the driving element 21 is disposed under the telescopic sleeve 23 , and the central axis of the piezoelectric element is connected to the telescopic sleeve 23 .
  • the central axis of the sleeve 23 is flush, and the hollow part in the middle of the piezoelectric element is used for light transmission, so as to maintain the stability of the optical lens 10 without blocking the light.
  • the upper surface of the driving element 21 and the lower surface of the outer sleeve 234 of the telescopic sleeve 23 are connected by an adhesive layer, and the adhesive layer is uniformly coated on the driving element 21 Between the upper surface and the lower surface of the retractable sleeve 23, the adhesive layer is a flexible material adhesive layer, such as epoxy resin, TPV, TPE, TPR and other flexible materials.
  • the driving element 21 and the telescopic sleeve 23 can be closely adhered, and there is no gap, so that the friction force generated by the deformation of the driving element 21 can be linearly transmitted to the telescopic sleeve
  • the barrel 23 prevents the original linear elastic relationship from being damaged due to uneven coating of the adhesive layer. Therefore, through the deformation of the driving element 21 , friction is generated between the driving element 21 and the retractable sleeve 23 , and the friction effect causes the retractable sleeve 23 to perform continuous rotational motion, driving the optical lens 10 telescopic.
  • FIG. 4 shows a polarization distribution diagram of the driving element 21
  • the driving element 21 includes at least one piezoelectric sheet A, one piezoelectric sheet B, and a spacer C, wherein all the The piezoelectric sheet A and the piezoelectric sheet B are symmetrically distributed on both sides of the driving element 21, and the spacer C is arranged between the piezoelectric sheet A and the piezoelectric sheet B, and is surrounded by the piezoelectric sheet. A and the piezoelectric sheet B are separated into two regions, and the two spaced regions are symmetrically distributed.
  • the driving element 21 is polarized along the thickness direction, and +/- represents the polarization direction of the piezoelectric sheet.
  • the piezoelectric sheet A and the piezoelectric sheet B have different wavelengths by half a wavelength.
  • the polarization direction of the piezoelectric sheet A is set to be opposite to the polarization direction of the piezoelectric sheet B.
  • the piezoelectric sheet A and the piezoelectric sheet B may also be configured as a combination of several piezoelectric sheets, and the polarization directions of the two adjacent piezoelectric sheets are opposite.
  • the polarization directions of two adjacent piezoelectric sheets are opposite, one of the piezoelectric sheets shrinks, and the adjacent piezoelectric sheets elongate.
  • the piezoelectric sheet A is composed of several piezoelectric sheets, wherein the polarization directions of the two piezoelectric sheets spaced apart in the piezoelectric sheet A area are the same, and the polarization directions in the piezoelectric sheet A area are divided into Several piezoelectric sheets of "+” are connected in series with the circuit board 32 through the pin A1, and several piezoelectric sheets whose polarization direction is "-" in the area of the piezoelectric sheet A are connected in series with the circuit board 32 through the pin A2 Connect; connect several piezoelectric sheets whose polarization direction is "+” in the piezoelectric sheet B area in series with the circuit board 32 through pin B1, and connect the polarization direction in the piezoelectric sheet B area to "-" Several piezoelectric sheets are connected in series with the circuit board 32 through the pin B2, and two pins are respectively set at the two partitions C for grounding.
  • the surface of the driving element 21 is provided with an electroplating metal material layer, which is used for electrical connection with the circuit board 32 to conduct the driving element 21 .
  • the driving element 21 is arranged above the circuit board 32, the lower surface of the driving element 21 is provided with pins, and is electrically connected to the circuit board 32 through the pins, and the driving elements 21 are set to two identical
  • the piezoelectric bodies are bonded into one body.
  • the two identical piezoelectric bodies are staggered by half the length of the polarization region.
  • an AC voltage with a time difference of 90° is applied, the two piezoelectric bodies standing wave vibration respectively.
  • each particle on the surface of the driving element 21 forms an ultrasonic microscopic vibration of a certain movement trajectory, usually an elliptical trajectory, and the vibration wave synthesized by the standing wave vibrations of the two piezoelectric bodies is a time-dependent vibration wave.
  • the advancing traveling wave, that is, the driving element 21 is a traveling wave vibration piezoelectric element.
  • the driving element 21 When the driving chip of the driving element 21 applies a forward voltage to the driving element 21, the driving element 21 generates a traveling wave that progresses with time, and the microscopic vibration generated by the driving element 21 is shown in the macroscopic form
  • the driving element 21 is regularly deformed, and the telescopic sleeve 23 is provided on the upper surface of the driving element 21.
  • the microscopic vibration generated by the power-on of the driving element 21 passes through the upper surface of the driving element 21 and the adjustable sleeve 23.
  • the friction between the lower surfaces of the telescopic sleeves 23 causes the telescopic sleeves 23 to perform a continuous macroscopic rotational movement in the clockwise direction, that is, in the opposite direction of the traveling wave propagation direction.
  • the driving element 21 When the driving chip of the driving element 21 applies a reverse voltage to the driving element 21, the driving element 21 generates a traveling wave that progresses with time, and the microscopic vibration generated by the driving element 21 is shown in the macroscopic form
  • the driving element 21 is regularly deformed, and the telescopic sleeve 23 is provided on the upper surface of the driving element 21.
  • the microscopic vibration generated by the power-on of the driving element 21 passes through the upper surface of the driving element 21 and the adjustable sleeve 23.
  • the friction between the lower surfaces of the telescopic sleeves 23 causes the telescopic sleeves 23 to perform a continuous macroscopic rotational movement in the counterclockwise direction, that is, in the opposite direction of the traveling wave propagation direction. Therefore, the driving element 21 is small in size, and at the same time operates without noise, does not require a gear mechanism, saves space, saves energy, and is environmentally friendly.
  • the driving element 21 through the deformation of the driving element 21, friction is generated between the driving element 21 and the telescopic sleeve 23 assembly, and the friction effect makes the telescopic sleeve 23 assembly perform continuous rotational movement, and the telescopic sleeve 23 assembly is integrated with the optical lens 10.
  • the flexible setting drives the optical lens 10 to extend and retract.
  • an electronic device including the above-mentioned retractable camera module.

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Abstract

本发明公开了一种可伸缩摄像模组包括光学镜头、伸缩组件以及感光组件，光学镜头保持于感光组件的光学路径上，伸缩组件包括驱动元件以及可伸缩套筒，驱动元件设置于感光组件和可伸缩套筒之间，光学镜头安装于可伸缩套筒中，驱动元件和可伸缩套筒之间在中轴线方向有预紧力，得以驱动可伸缩套筒旋转，使得可伸缩套筒带动光学镜头上升或下降。从而，通过驱动元件来驱动可伸缩套筒旋转，使得可伸缩套筒向内收缩或向外伸展，进而自动调整光学镜头和感光组件之间的相对位置关系，实现摄像模组的自动变焦。

Description

可伸缩摄像模组及电子设备 技术领域
本发明涉及一种镜头，尤其涉及一种可伸缩摄像模组及电子设备。
背景技术
近年来，随着移动电子设备的普及，被应用于移动电子设备的摄像模组(用于获取影像，如视频或图像)的相关技术得到快速的发展和进步，尤其在医疗、安防、移动终端、工业生产等诸多领域得到广泛的应用。
在消费电子领域，尤其是在智能手机领域中，小型化以及轻便化的摄像模组是一个不可或缺的部件，目前在便携终端本体上至少配置有一个以上的摄像头模块。而为了满足越来越广泛的市场需求，对摄像模组的高像素和高帧率等特征提出了更高的要求，是现有摄像模组不可逆转的发展趋势。
目前随着市场需求，对手机终端配备的摄像模组有实现多倍变焦拍摄的需求，而多倍变焦拍摄通过配置至少一长焦模组来实现，但随着倍数增加，长焦模组的总焦距也会要求变大，这就导致摄像模组的高度变高。针对高度问题，目前多数采取潜望式模组，即通过设置转光元件，将光路改变来实现高度降低，但是潜望式模组的成本较高，组装难度较大，因此对于部分摄像模组并不适用潜望式模组。若不用潜望式模组，则会导致模组尺寸过大，不符合终端需求。
发明内容
本发明的一个目的在于提供一种可伸缩摄像模组及电子设备，通过压电元件驱动光学镜头来实现摄像模组的多倍变焦功能，符合终端对高度的需求。
本发明的另一目的在于提供一种可伸缩摄像模组及电子设备，其通过可伸缩套筒和驱动元件的配合，有效旋转可伸缩套筒使得光学镜头上升或下降，运行方便。
为达到以上目的，本发明采用的技术方案为：一种可伸缩摄像模组包括光学镜头、伸缩组件以及感光组件，所述光学镜头保持于所述感光组件的光学路径上，所述伸缩组件包括驱动元件以及可伸缩套筒，所述驱动元件设置于所述感光组件和所述可伸缩套筒之间，所述光学 镜头安装于所述可伸缩套筒中，所述驱动元件和所述可伸缩套筒之间在中轴线方向有预紧力，得以驱动所述可伸缩套筒旋转，使得所述可伸缩套筒带动所述光学镜头上升或下降。
作为一种优选，所述可伸缩套筒包括多节套筒单体，所述套筒单体之间相互嵌套，相邻两节所述套筒单体之间设有导轨，所述导轨呈螺旋状。
作为一种优选，所述套筒单体设有外套筒以及至少一内套筒，当所述外套筒转动时，所述内套筒沿着所述导轨向上螺旋运动或向下螺旋运动。
作为一种优选，所述可伸缩套筒与所述驱动元件沿光轴方向自上而下排列，所述可伸缩套筒的中轴线、所述驱动元件的中轴线与所述感光组件的感光芯片的中轴线相对齐，所述驱动元件电连接于所述感光组件的线路板。
作为一种优选，所述驱动元件为圆环形状的压电元件，当所述驱动元件形变时，所述驱动元件和所述可伸缩套筒之间产生摩擦，使得所述外套筒连续旋转。
作为一种优选，所述驱动元件的上表面和所述可伸缩套筒的外套筒下表面通过粘接层连接，所述粘接层为柔性材料粘接层。
作为一种优选，所述光学镜头包括至少一镜筒以及安装于所述镜筒内的至少一光学透镜，所述光学透镜安装于所述镜筒中，所述光学镜头的有效焦距为19mm～29mm。
作为一种优选，所述光学镜头的有效焦距为27mm～29mm。
作为一种优选，当所述可伸缩摄像模组用于5倍光学变焦，所述摄像模组的最小高度范围为8mm～11mm，所述摄像模组的最大高度范围为23mm～26mm。
作为一种优选，当所述可伸缩摄像模组用于5倍光学变焦，所述摄像模组的最小高度范围为9mm～10mm，所述摄像模组的最大高度范围为24mm～25mm。
作为一种优选，当所述可伸缩摄像模组用于10倍光学变焦，所述摄像模组的最小高度范围为9mm～12mm，所述摄像模组的最大高度范围为28mm～32mm。
作为一种优选，当所述可伸缩摄像模组用于10倍光学变焦，所述摄像模组的最小高度范围为10mm～11mm，所述摄像模组的最大高度范围为29mm～31mm。
作为一种优选，所述驱动元件包括至少一压电片A、一压电片B以及一间隔区C，其中，所述压电片A和压电片B对称分布在所述驱动元件两侧，所述间隔区C设置在所述压电片A和所述压电片B之间，被所述压电片A和所述压电片B分隔成两个区域，两个间隔区对称分布，当所述驱动元件的驱动芯片对所述驱动元件施加一正向电压时，所述可伸缩套筒顺时针旋转，带动所述光学镜头上升，当所述驱动元件的驱动芯片对所述驱动元件施加一负向电压时，所述可伸缩套筒逆时针旋转，带动所述光学镜头下降。
作为一种优选，所述压电片A和压电片B波长不同，相差半个波长，所述压电片A的极化方向设置为与压电片B的极化方向相反，当对所述驱动元件施加电压时，两个相邻的压电片极化方向相反，其中一个压电片收缩，相邻的压电片伸长，两个压电体分别作驻波振动，两个所述压电体的驻波振动所合成的振动波为一个随时间前进的行波。
作为一种优选，所述压电片A由若干个压电片组成，其中所述压电片A区域中相隔的两个压电片的极化方向相同，将所述压电片A区域内极化方向为“+”的若干压电片串联通过引脚A1与线路板连接，将所述压电片A区域内极化方向为“-”的若干压电片串联通过引脚A2与线路板连接；将所述压电片B区域内极化方向为“+”的若干压电片串联通过引脚B1与线路板连接，将所述压电片B区域内极化方向为“-”的若干压电片串联通过引脚B2与线路板连接，两个间隔区C处分别设置两个引脚，用于接地。
作为一种优选，所述驱动元件表面设有电镀金属材料层，用于与线路板电连接。
一种电子设备，包含上述可伸缩摄像模组。
附图说明
图1是根据本申请实施方式的可伸缩摄像模组的结构立体图；
图2是根据本申请实施方式的摄像模组的爆炸图；
图3是根据本申请实施方式的可伸缩套筒的结构立体图；
图4是根据本申请实施方式的驱动元件的极化分布图；
图5是根据本申请实施方式的摄像模组的；
图中：10、光学镜头；20、伸缩组件；21、驱动元件；23、可伸缩套筒；231、套筒单体；232导轨；233、内套筒；234、外套筒；235、中间套筒；30、感光组件；31、感光芯片；32、线路板；40、外框架。
具体实施方式
下面，结合具体实施方式，对本发明做进一步描述，需要说明的是，在不相冲突的前提下，以下描述的各实施例之间或各技术特征之间可以任意组合形成新的实施例。
在本发明的描述中，需要说明的是，对于方位词，如有术语“中心”、“横向”、“纵向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”等指示方位和位置关系为基于附图所示的方位或位置关系，仅是为了便于叙述本发明和简化描述，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、以特定方位构造和操作，不能理解为限制本发明的具体保护范围。
本申请的说明书和权利要求书中的术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
在本发明的描述中，还需要说明的是，除非另有明确的规定和限定，术语“设置”、“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以是接触连接或通过中间媒介间接相连，可以是两个元件内部的连通。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在本发明中的具体含义。
根据本申请的第一个方面，提供一种可伸缩摄像模组，如图1到图5所示，所述可伸缩摄像模组包括光学镜头10、伸缩组件20以及感光组件30，所述光学镜头10保持于所述感光组件30的光学路径上，所述伸缩组件20包括驱动元件21以及可伸缩套筒23，所述驱动元件21设置于所述感光组件30和所述可伸缩套筒23之间，所述光学镜头10安装于所述可伸缩套筒23中，所述驱动元件21和所述可伸缩套筒23之间在中轴线方向有预紧力，得以驱动所 述可伸缩套筒23旋转，使得所述可伸缩套筒23带动所述光学镜头10上升或下降。从而，通过所述驱动元件21来驱动所述可伸缩套筒23旋转，使得所述可伸缩套筒23向内收缩或向外伸展，进而自动调整所述光学镜头10和所述感光组件30之间的相对位置关系，实现摄像模组的自动变焦。
也就是说，所述驱动元件21和所述可伸缩套筒23之间在Z方向有预紧力，所述驱动元件21得以控制所述可伸缩套筒23的旋转方向。
其中，所述光学镜头10包括至少一镜筒以及安装于所述镜筒内的至少一光学透镜，所述光学镜头10可以由多个镜头部件组成，数量可以为2个以上，所述光学透镜安装于所述镜筒中。
在一些实施例中，所述光学镜头10的有效焦距为19mm～29mm。
优选地，所述光学镜头10的有效焦距为27mm～29mm。
在一些实施例中，所述感光组件30包括感光芯片31、线路板32、支架、滤光元件以及电子元器件，所述滤光元件安装于所述支架中，所述支架电连接于所述线路板32，所述感光芯片31和所述电子元器件电连接于所述线路板32的正面，所述电子元器件围绕所述感光芯片31布置。
其中，所述感光组件30也可以进一步包括模塑体，所述模塑体用于包覆电子元器件(MOB)和部分感光区(MOC)，所述线路板32作为所述感光组件30的安装基板，所述支架可选择地通过胶水粘接固定于所述线路板32、模塑体以及感光芯片31非感光区的其中一个。
在一些实施例中，所述光学透镜可以是常规的塑料镜片或者玻璃镜片，也可以是具有突出部的镜片，如最外侧的光学透镜具有一直径较小的凸起，得以伸入到显示屏的小孔中，实现所述摄像模组与显示屏的安装，安装方式得以减小所述摄像模组成像元件(镜片)到显示屏上端开孔的距离，增大所述摄像模组的有效视场角，保证所述摄像模组具有充足的进光亮；同时，有助于将所述摄像模组的一部分嵌入至显示屏中，减小留置在终端设备中其他位置的模组体积，减小终端设备为所述摄像模组预留的安装空间，满足终端设备对于所述摄像模组小型化的要求。也就是说，所述可伸缩摄像模组的上端面可以高于终端设备的背面，但突出的高度不 能过大，一般可控制在0mm～5mm之间。
在一些实施例中，所述可伸缩套筒23与所述驱动元件21沿光轴方向自上而下排列，所述可伸缩套筒23的中轴线、所述驱动元件21的中轴线与所述感光芯片31的中轴线相对齐，所述驱动元件21电连接于所述感光芯片31的线路板32，所述光学镜头10安装于所述可伸缩套筒23的上端部或中部，所述光学镜头10得以随着所述可伸缩套筒23一起移动，使得所述摄像模组处于工作状态或非工作状态，通过所述伸缩组件20，所述光学镜头10可相对于所述感光芯片31做伸缩移动，得以在收缩状态和伸展状态之间切换，其中，当所述摄像模组处于伸展状态时，所述可伸缩套筒23被驱动并相对于所述感光芯片31向外伸展，得以带动所述光学镜头10相对于所述感光芯片31向上移动，以增大所述光学镜头10和所述感光芯片31之间的距离；当所述摄像模组处于收缩状态时，所述可伸缩套筒23被驱动并相对于所述感光芯片31向内收缩，得以带动所述光学镜头10相对于所述感光芯片31向下移动，以减小所述光学镜头10与所述感光芯片31之间的距离。所述伸展状态为工作状态，所述收缩状态为非工作状态，从而，通过所述伸缩组件20得以带动所述光学镜头10上升和下降，有利于增大后焦，保证成像质量，减小整个所述摄像模组的高度，有利于摄像模组小型化。
其中，所述可伸缩摄像模组进一步包括外框架40，所述感光组件30和所述伸缩组件20容置于所述外框架40内，所述外框架40设有透光孔，所述透光孔的中轴线与所述可伸缩套筒23的中轴线齐平。
在一些实施例中，以所述可伸缩摄像模组用于5倍光学变焦为例，当所述摄像模组处于收缩状态时，所述摄像模组的最小高度范围为8mm～11mm，优选地，所述摄像模组的最小高度范围为9mm～10mm；当所述摄像模组处于伸展状态时，所述摄像模组的最大高度范围为23mm～26mm，优选地，所述摄像模组的最大高度范围为24mm～25mm。
在一些实施例中，以所述可伸缩摄像模组用于10倍光学变焦为例，当所述摄像模组处于收缩状态时，所述摄像模组的最小高度范围为9mm～12mm，优选地，所述摄像模组的最小高度范围为10mm～11mm；当所述摄像模组处于伸展状态时，所述摄像模组的最大高度范围为28mm～32mm，优选地，所述摄像模组的最大高度范围为29mm～31mm。
所述可伸缩套筒23包括多节套筒单体231，所述套筒单体231之间相互嵌套，相邻两节所述套筒单体231之间设有导轨232，所述导轨232呈螺旋状，所述套筒单体231设有外套筒234以及至少一内套筒233，当所述外套筒234转动时，所述内套筒233沿着所述导轨232螺旋向上或螺旋向下移动。
其中，所述内套筒233可以为1个，也可以多个，当所述内套筒233为一个时，所述套筒单体231设有一个外套筒234和一个内套筒233，所述导轨232设置于所述外套筒234的内表面和所述内套筒233的外表面，当所述外套筒234旋转时，所述内套筒233在所述导轨232的引导下向上螺旋运动或向下螺旋运动，带动所述内套筒233中的光学镜头10上升或下降；当所述内套筒233为多个时，所述套筒单体231设有一个外套筒234至少一个中间套筒235以及一个最内套筒233，所述导轨232设置于所述外套筒234和相邻的所述中间套筒235之间，相邻的所述中间套筒235及所述最内套筒233之间也设有导轨232，当所述外套筒234旋转时，所述中间套筒235和最内套筒233在所述导轨232的引导下向上螺旋运动或向下螺旋运动。换句话说，当最外层的所述套筒单体231被驱动以顺时针方向旋转时，位于内层的所述套筒单体231在所述导轨232的引导下向上螺旋运动；而当最外层的所述套筒单体231被驱动以逆时针旋转时，位于内层的所述套筒单体231在所述导轨232的引导下螺旋向下运动。
在一些实施例中，所述驱动元件21为圆环形状的压电元件，所述驱动元件21设置于所述可伸缩套筒23的下方，所述压电元件的中轴线与所述可伸缩套筒23的中轴线齐平，所述压电元件中间镂空处用于透光，以保持所述光学镜头10的稳定性，同时不遮挡光线。
在一些实施例中，所述驱动元件21的上表面和所述可伸缩套筒23的外套筒234下表面通过粘接层连接，所述粘接层均匀的涂敷于所述驱动元件21上表面和所述可伸缩套筒23下表面之间，所述粘接层为柔性材料粘接层，如环氧树脂、TPV、TPE、TPR等柔性材料。通过所述粘接层得以紧密贴合所述驱动元件21和所述可伸缩套筒23，不存在空隙，得以将所述驱动元件21由于形变产生的摩擦力线性地传递给所述可伸缩套筒23，防止由于所述粘接层涂覆不均匀而导致原有线性弹力关系被破坏。从而，通过所述驱动元件21的形变，所述驱动元件21和所述可伸缩套筒23之间产生摩擦，摩擦作用使得所述可伸缩套筒23做连续旋转运动，带动所述光学镜头10伸缩。
在一些实施例中，图4所示的是所述驱动元件21的极化分布图，所述驱动元件21包括至少一压电片A、一压电片B以及一间隔区C，其中，所述压电片A和压电片B对称分布在所述驱动元件21两侧，所述间隔区C设置在所述压电片A和所述压电片B之间，被所述压电片A和所述压电片B分隔成两个区域，两个间隔区对称分布。其中，所述驱动元件21沿厚度方向极化，+/-表示压电片极化方向。
所述压电片A和压电片B波长不同，相差半个波长。所述压电片A的极化方向设置为与压电片B的极化方向相反。其中，压电片A与压电片B也可以设置为若干个压电片组合而成，相邻的两段压电片的极化方向相反。当对所述驱动元件21施加电压时，两个相邻的压电片极化方向相反，其中一个压电片收缩，相邻的压电片伸长。
其中，所述压电片A由若干个压电片组成，其中所述压电片A区域中相隔的两个压电片的极化方向相同，将所述压电片A区域内极化方向为“+”的若干压电片串联通过引脚A1与线路板32连接，将所述压电片A区域内极化方向为“-”的若干压电片串联通过引脚A2与线路板32连接；将所述压电片B区域内极化方向为“+”的若干压电片串联通过引脚B1与线路板32连接，将所述压电片B区域内极化方向为“-”的若干压电片串联通过引脚B2与线路板32连接，两个间隔区C处分别设置两个引脚，用于接地。
其中，所述驱动元件21表面设有电镀金属材料层，用于与所述线路板32电连接，得以导通所述驱动元件21。
其中，所述驱动元件21设置在所述线路板32的上方，所述驱动元件21下表面设置引脚，通过引脚与所述线路板32电连接，所述驱动元件21设置为两个相同的压电体粘合成一体而成，所述两个相同的压电体相互错开半个极化区的长度，当分别施加时间上相差90°电角度的交流电压时，两个压电体就分别作驻波振动。此时可以认为，所述驱动元件21表面上的每一个质点形成一定运动轨迹的超声波微观振动，通常为椭圆轨迹，两个所述压电体的驻波振动所合成的振动波为一个随时间前进的行波，即所述驱动元件21为行波振动压电元件。
当所述驱动元件21的驱动芯片对所述驱动元件21施加一正向电压时，所述驱动元件21产生一随时间前进的行波，所述驱动元件21产生的微观振动，宏观表现为所述驱动元件21 产生有规律的形变，同时所述驱动元件21上表面设置所述可伸缩套筒23，所述驱动元件21通电产生的微观振动，通过所述驱动元件21上表面与所述可伸缩套筒23下表面之间的摩擦作用，使所述可伸缩套筒23沿顺时针方向，也就是行波传播方向的反方向，做连续宏观的旋转运动。
当所述驱动元件21的驱动芯片对所述驱动元件21施加一反向电压时，所述驱动元件21产生一随时间前进的行波，所述驱动元件21产生的微观振动，宏观表现为所述驱动元件21产生有规律的形变，同时所述驱动元件21上表面设置所述可伸缩套筒23，所述驱动元件21通电产生的微观振动，通过所述驱动元件21上表面与所述可伸缩套筒23下表面之间的摩擦作用，使所述可伸缩套筒23沿逆时针方向，也就是行波传播方向的反方向，做连续宏观的旋转运动。从而所述驱动元件21体积小，同时工作时没有噪音，无需齿轮机构，节省空间，节能环保。
其中，通过驱动元件21形变，所述驱动元件21与可伸缩套筒23组件之间产生摩擦，摩擦作用使可伸缩套筒23组件做连续旋转运动，可伸缩套筒23组件与光学镜头10一体化设置，带动光学镜头10伸缩。
根据本申请的第二个方面，提供一种包含上述可伸缩摄像模组的电子设备。
以上描述了本发明的基本原理、主要特征和本发明的优点。本行业的技术人员应该了解，本发明不受上述实施例的限制，上述实施例和说明书中描述的只是本发明的原理，在不脱离本发明精神和范围的前提下本发明还会有各种变化和改进，这些变化和改进都落入要求保护的本发明的范围内。本发明要求的保护范围由所附的权利要求书及其等同物界定。

Claims (15)

  1. 一种可伸缩摄像模组，其特征在于，包括光学镜头、伸缩组件以及感光组件，所述光学镜头保持于所述感光组件的光学路径上，所述伸缩组件包括驱动元件以及可伸缩套筒，所述驱动元件设置于所述感光组件和所述可伸缩套筒之间，所述光学镜头安装于所述可伸缩套筒中，所述驱动元件和所述可伸缩套筒之间在中轴线方向有预紧力，得以驱动所述可伸缩套筒旋转，使得所述可伸缩套筒带动所述光学镜头上升或下降。
  2. 根据权利要求1所述的可伸缩摄像模组，其特征在于，所述可伸缩套筒包括多节套筒单体，所述套筒单体之间相互嵌套，相邻两节所述套筒单体之间设有导轨，所述导轨呈螺旋状。
  3. 根据权利要求2所述的可伸缩摄像模组，其特征在于，所述套筒单体设有外套筒以及至少一内套筒，当所述外套筒转动时，所述内套筒沿着所述导轨向上螺旋运动或向下螺旋运动。
  4. 根据权利要求1所述的可伸缩摄像模组，其特征在于，所述可伸缩套筒与所述驱动元件沿光轴方向自上而下排列，所述可伸缩套筒的中轴线、所述驱动元件的中轴线与所述感光组件的感光芯片的中轴线相对齐，所述驱动元件电连接于所述感光组件的线路板。
  5. 根据权利要求3所述的可伸缩摄像模组，其特征在于，所述驱动元件为圆环形状的压电元件，当所述驱动元件形变时，所述驱动元件和所述可伸缩套筒之间产生摩擦，使得所述外套筒连续旋转。
  6. 根据权利要求5所述的可伸缩摄像模组，其特征在于，所述驱动元件的上表面和所述可伸缩套筒的外套筒下表面通过粘接层连接，所述粘接层为柔性材料粘接层。
  7. 根据权利要求1所述的可伸缩摄像模组，其特征在于，所述光学镜头包括至少一镜筒以及安装于所述镜筒内的至少一光学透镜，所述光学透镜安装于所述镜筒中，所述光学镜头的有效焦距为19mm～29mm。
  8. 根据权利要求7所述的可伸缩摄像模组，其特征在于，所述光学镜头的有效焦距为27mm～29mm。
  9. 根据权利要求1所述的可伸缩摄像模组，其特征在于，当所述可伸缩摄像模组用于5 倍光学变焦，所述摄像模组的最小高度范围为8mm～11mm，所述摄像模组的最大高度范围为23mm～26mm；当所述可伸缩摄像模组用于10倍光学变焦，所述摄像模组的最小高度范围为9mm～12mm，所述摄像模组的最大高度范围为28mm～32mm。
  10. 根据权利要求1所述的可伸缩摄像模组，其特征在于，当所述可伸缩摄像模组用于5倍光学变焦，所述摄像模组的最小高度范围为9mm～10mm，所述摄像模组的最大高度范围为24mm～25mm；当所述可伸缩摄像模组用于10倍光学变焦，所述摄像模组的最小高度范围为10mm～11mm，所述摄像模组的最大高度范围为29mm～31mm。
  11. 根据权利要求1～10中任一所述的可伸缩摄像模组，其特征在于，所述驱动元件包括至少一压电片A、一压电片B以及一间隔区C，其中，所述压电片A和压电片B对称分布在所述驱动元件两侧，所述间隔区C设置在所述压电片A和所述压电片B之间，被所述压电片A和所述压电片B分隔成两个区域，两个间隔区对称分布，当所述驱动元件的驱动芯片对所述驱动元件施加一正向电压时，所述可伸缩套筒顺时针旋转，带动所述光学镜头上升，当所述驱动元件的驱动芯片对所述驱动元件施加一负向电压时，所述可伸缩套筒逆时针旋转，带动所述光学镜头下降。
  12. 根据权利要求11所述的可伸缩摄像模组，其特征在于，所述压电片A和压电片B波长不同，相差半个波长，所述压电片A的极化方向设置为与压电片B的极化方向相反，当对所述驱动元件施加电压时，两个相邻的压电片极化方向相反，其中一个压电片收缩，相邻的压电片伸长，两个压电体分别作驻波振动，两个所述压电体的驻波振动所合成的振动波为一个随时间前进的行波。
  13. 根据权利要求11所述的可伸缩摄像模组，其特征在于，所述压电片A由若干个压电片组成，其中所述压电片A区域中相隔的两个压电片的极化方向相同，将所述压电片A区域内极化方向为“+”的若干压电片串联通过引脚A1与线路板连接，将所述压电片A区域内极化方向为“-”的若干压电片串联通过引脚A2与线路板连接；将所述压电片B区域内极化方向为“+”的若干压电片串联通过引脚B1与线路板连接，将所述压电片B区域内极化方向为 “-”的若干压电片串联通过引脚B2与线路板连接，两个间隔区C处分别设置两个引脚，用于接地。
  14. 根据权利要求11所述的可伸缩摄像模组，其特征在于，所述驱动元件表面设有电镀金属材料层，用于与线路板电连接。
  15. 一种电子设备，其特征在于，包含如权利要求1～14中任一所述的可伸缩摄像模组。
PCT/CN2022/073681 2021-02-11 2022-01-25 可伸缩摄像模组及电子设备 WO2022170961A1 (zh)

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