WO2021136351A1 - 变焦镜头、相机模组和电子装置 - Google Patents

变焦镜头、相机模组和电子装置 Download PDF

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Publication number
WO2021136351A1
WO2021136351A1 PCT/CN2020/141298 CN2020141298W WO2021136351A1 WO 2021136351 A1 WO2021136351 A1 WO 2021136351A1 CN 2020141298 W CN2020141298 W CN 2020141298W WO 2021136351 A1 WO2021136351 A1 WO 2021136351A1
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WO
WIPO (PCT)
Prior art keywords
lens assembly
lens
control
assembly
optical axis
Prior art date
Application number
PCT/CN2020/141298
Other languages
English (en)
French (fr)
Inventor
徐青
Original Assignee
Oppo广东移动通信有限公司
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Filing date
Publication date
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 WO2021136351A1 publication Critical patent/WO2021136351A1/zh
Priority to US17/837,837 priority Critical patent/US20220299788A1/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/021—Mountings, adjusting means, or light-tight connections, for optical elements for lenses for more than one lens
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0055—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element
    • G02B13/0065—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras employing a special optical element having a beam-folding prism or mirror
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00—Optical objectives specially designed for the purposes specified below
    • G02B13/001—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/009—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras having zoom function
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B15/00—Optical objectives with means for varying the magnification
    • G02B15/14—Optical objectives with means for varying the magnification by axial movement of one or more lenses or groups of lenses relative to the image plane for continuously varying the equivalent focal length of the objective
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/64—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image
    • G02B27/646—Imaging systems using optical elements for stabilisation of the lateral and angular position of the image compensating for small deviations, e.g. due to vibration or shake
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/08—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted to co-operate with a remote control mechanism
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02—Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • G02B7/10—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens
    • G02B7/102—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification by relative axial movement of several lenses, e.g. of varifocal objective lens controlled by a microcomputer
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
    • G02B7/1805—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for prisms
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • 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
    • G03B13/00—Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32—Means for focusing
    • G03B13/34—Power focusing
    • G03B13/36—Autofocus systems
    • 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
    • G03B3/00—Focusing arrangements of general interest for cameras, projectors or printers
    • G03B3/10—Power-operated focusing
    • 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
    • G03B30/00—Camera modules comprising integrated lens units and imaging units, specially adapted for being embedded in other devices, e.g. mobile phones or vehicles
    • 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
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0007—Movement of one or more optical elements for control of motion blur
    • G03B2205/003—Movement of one or more optical elements for control of motion blur by a prism with variable angle or the like
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0046—Movement of one or more optical elements for zooming
    • 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
    • G03B2205/00—Adjustment of optical system relative to image or object surface other than for focusing
    • G03B2205/0053—Driving means for the movement of one or more optical element
    • G03B2205/0069—Driving means for the movement of one or more optical element using electromagnetic actuators, e.g. voice coils

Definitions

  • This application relates to the technical field of consumer electronics, in particular to a zoom lens, a camera module and an electronic device.
  • the zoom lens can realize the change of the overall focal length through the movement of the lens group.
  • most of the current drive chips are only suitable for realizing the focus and optical image stabilization of the fixed focus lens. Because the lens group moves in a small range during focusing, When the optical image stabilization is implemented, the overall moving stroke range of the zoom lens is also small, and even if the effective control bit of the drive chip is small, the movement of the lens group can be controlled with high precision.
  • the embodiments of the present application provide a zoom lens, a camera module, and an electronic device.
  • the zoom lens of the embodiment of the present application includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, a first driving chip, and a second driving chip.
  • the first lens assembly, the second lens assembly, and the third lens assembly are arranged in a housing.
  • the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis of the first lens assembly.
  • the first driving chip includes a first control terminal, a second control terminal, a third control terminal, and a fourth control terminal.
  • the first control terminal and the second control terminal are respectively used to control the second lens assembly
  • the third lens assembly moves relative to the first lens assembly along the optical axis to achieve zooming of the zoom lens.
  • the third control end is used to control the third lens assembly to move relative to the first lens assembly along the optical axis to achieve focusing of the zoom lens under the first target focal length; the fourth control end For controlling the third lens assembly to move relative to the first lens assembly along the optical axis under the second target focal length to achieve focusing of the zoom lens, the first target focal length and the second target
  • the focal lengths are not the same.
  • the camera module of the embodiment of the present application includes a photosensitive element and a zoom lens.
  • the photosensitive element is arranged on the image side of the zoom lens.
  • the zoom lens includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, a first driving chip, and a second driving chip.
  • the first lens assembly, the second lens assembly, and the third lens assembly are arranged in a housing.
  • the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis of the first lens assembly.
  • the first driving chip includes a first control terminal, a second control terminal, a third control terminal, and a fourth control terminal.
  • the first control terminal and the second control terminal are respectively used to control the second lens assembly And the third lens assembly moves relative to the first lens assembly along the optical axis to achieve zooming of the zoom lens.
  • the third control end is used to control the third lens assembly to move relative to the first lens assembly along the optical axis to achieve focusing of the zoom lens under the first target focal length; the fourth control end For controlling the third lens assembly to move relative to the first lens assembly along the optical axis under the second target focal length to achieve focusing of the zoom lens, the first target focal length and the second target
  • the focal lengths are not the same.
  • the electronic device of the present application includes a casing and the camera module of the above-mentioned embodiment.
  • the camera module is installed on the casing.
  • the camera module includes a photosensitive element and a zoom lens.
  • the photosensitive element is arranged on the image side of the zoom lens.
  • the zoom lens includes a housing, a first lens assembly, a second lens assembly, a third lens assembly, a first driving chip, and a second driving chip.
  • the first lens assembly, the second lens assembly, and the third lens assembly are arranged in a housing.
  • the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis of the first lens assembly.
  • the first driving chip includes a first control terminal, a second control terminal, a third control terminal, and a fourth control terminal.
  • the first control terminal and the second control terminal are respectively used to control the second lens assembly And the third lens assembly moves relative to the first lens assembly along the optical axis to achieve zooming of the zoom lens.
  • the third control end is used to control the third lens assembly to move relative to the first lens assembly along the optical axis to achieve focusing of the zoom lens under the first target focal length; the fourth control end For controlling the third lens assembly to move relative to the first lens assembly along the optical axis under the second target focal length to achieve focusing of the zoom lens, the first target focal length and the second target
  • the focal lengths are not the same.
  • FIG. 1 is a schematic plan view of an electronic device according to some embodiments of the present application.
  • FIG. 2 is a schematic plan view from another perspective of the electronic device according to some embodiments of the present application.
  • FIG. 3 is a schematic diagram of a three-dimensional assembly of a zoom lens according to some embodiments of the present application.
  • FIG. 4 is a three-dimensional exploded schematic diagram of a zoom lens according to some embodiments of the present application.
  • FIG. 5 is a schematic plan view of a first driving chip according to some embodiments of the present application.
  • FIG. 6 is a schematic plan view of a second driving chip according to some embodiments of the present application.
  • 7a and 7b are schematic cross-sectional views of the zoom lens in FIG. 3 along the line VI-VI under different focal lengths.
  • FIG. 8 is a schematic plan view of a lens of a zoom lens in some embodiments.
  • 9a and 9b are schematic diagrams of the positions of the second lens assembly and the third lens assembly in different focal length states in some embodiments.
  • FIG. 10 is a schematic diagram of the relationship between the stroke and the current of the second lens assembly and the third lens assembly of the zoom lens in some embodiments.
  • FIG. 11 is a schematic cross-sectional view of the zoom lens in some embodiments taken by the section line corresponding to the line VI-VI in FIG. 3.
  • Fig. 12 is a schematic cross-sectional view of the zoom lens in Fig. 3 along the line XI-XI.
  • the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. contact.
  • the "above”, “above” and “above” of the first feature on the second feature may mean that the first feature is directly above or diagonally above the second feature, or it simply means that the level of the first feature is higher than that of the second feature.
  • the “below”, “below” and “below” of the second feature of the first feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the level of the first feature is smaller than the second feature.
  • the zoom lens of the embodiment of the present application includes a housing, a first lens assembly, a second lens assembly and a third lens assembly arranged in the housing, and a first driving chip.
  • the first lens assembly, the second lens assembly and the third lens assembly are arranged in sequence along the optical axis of the first lens assembly;
  • the first driving chip includes a first control terminal, a second control terminal, a third control terminal and a fourth control terminal,
  • the first control end and the second control end are respectively used to control the second lens assembly and the third lens assembly to move relative to the first lens assembly along the optical axis to achieve zooming of the zoom lens;
  • the third control end is used to set the first target focal length
  • the third lens assembly is controlled to move relative to the first lens assembly along the optical axis to achieve focusing of the zoom lens;
  • the fourth control end is used to control the third lens assembly to move relative to the first lens assembly along the optical axis at the second target focal length
  • the first target focal length and the second target focal length are different.
  • the housing includes a substrate, the substrate includes a bearing surface, and the zoom lens further includes a second driving chip and a prism assembly.
  • the prism assembly, the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis.
  • the second driving chip is arranged on the carrying surface and is used to control the movement of the prism assembly in the first direction and the second direction to achieve optical anti-shake, and the optical axis, the first direction and the second direction are perpendicular to each other.
  • the first direction is parallel to the bearing surface and perpendicular to the optical axis
  • the second direction is perpendicular to the bearing surface
  • the bearing surface is parallel to the optical axis.
  • the number of effective control bits of the first driving chip and the second driving chip are both greater than or equal to 10, so that the minimum movement unit of the second lens assembly and the third lens assembly meets the predetermined movement accuracy.
  • the zoom lens further includes a fourth lens assembly disposed in the housing, and the second driving chip further includes a fifth control terminal, which is connected to the fourth lens assembly to control the fourth lens assembly along The optical axis moves relative to the first lens assembly.
  • the zoom lens includes an anti-shake driver
  • the second driver chip includes a first anti-shake control terminal and a second anti-shake control terminal. Both the first anti-shake control terminal and the second anti-shake control terminal are connected to the anti-shake control terminal.
  • the anti-shake driver is connected, the anti-shake driver is connected with the prism assembly, the first anti-shake control end is used to control the movement of the anti-shake driver to drive the movement of the prism assembly in the first direction, and the second anti-shake control end is used to control the anti-shake control
  • the shaking driving member moves to drive the movement of the prism assembly in the second direction.
  • the prism component includes a prism.
  • the prism includes an incident surface, a reflective surface, and an exit surface that are sequentially connected.
  • the first lens component is opposite to the incident surface or the exit surface, and the reflective surface is used to reflect light incident from the incident surface. So that the light is emitted from the exit surface.
  • the zoom lens further includes a first driving part and a second driving part.
  • the first control end is connected to the second lens assembly through the first driving part, and the first control end is used to control the movement of the first driving part.
  • the second control end, the third control end, and the fourth control end are all connected to the second driving part, the second driving part is connected to the third lens assembly, and the second The control end, the third control end and the fourth control end are all used to control the movement of the second driving member to drive the third lens assembly to move relative to the first lens assembly along the optical axis.
  • the first driving member includes a first coil and a first magnet
  • the second driving member includes a second coil and a second magnet
  • the first magnet and the second lens assembly are connected
  • the first control terminal is connected to the first coil.
  • the first control terminal is used to control the current input to the first coil to drive the first magnet to drive the second lens assembly to move relative to the first lens assembly along the optical axis.
  • the second control The second control terminal, the third control terminal and the fourth control terminal are all connected to the second coil.
  • the second control terminal, the third control terminal and the fourth control terminal are all used to control the current input to the second coil to drive the second magnet to drive the second coil.
  • the three-lens assembly moves relative to the first lens assembly along the optical axis.
  • the housing includes a substrate, the bearing surface of the substrate is provided with a slide rail, the surfaces of the second lens assembly and the third lens assembly opposite to the bearing surface are both provided with balls, the second lens assembly and the third lens
  • the ball of the assembly is slidably connected with the sliding rail, so that the second lens assembly and the third lens assembly move relative to the first lens assembly along the optical axis.
  • the third control terminal is also used to control the third lens assembly to stop moving when the sharpness of the image captured by the zoom lens reaches a preset sharpness
  • the second target focal length is also used to control the third lens assembly to stop moving when the sharpness of the image captured by the zoom lens reaches the preset sharpness, the first target focal length is in the short focus state, and the second target focal length is in the long focus state.
  • the camera module of the embodiment of the present application includes a photosensitive element and a zoom lens, the photosensitive element is arranged on the image side of the zoom lens; the zoom lens includes a housing, a first lens assembly, a second lens assembly, and a third lens assembly arranged in the housing , And the first driver chip.
  • the first lens assembly, the second lens assembly and the third lens assembly are arranged in sequence along the optical axis of the first lens assembly;
  • the first driving chip includes a first control terminal, a second control terminal, a third control terminal and a fourth control terminal,
  • the first control end and the second control end are respectively used to control the second lens assembly and the third lens assembly to move relative to the first lens assembly along the optical axis to achieve zooming of the zoom lens;
  • the third control end is used to set the first target focal length
  • the third lens assembly is controlled to move relative to the first lens assembly along the optical axis to achieve focusing of the zoom lens;
  • the fourth control end is used to control the third lens assembly to move relative to the first lens assembly along the optical axis at the second target focal length
  • the first target focal length and the second target focal length are different.
  • the housing includes a substrate, the substrate includes a bearing surface, and the zoom lens further includes a second driving chip and a prism assembly.
  • the prism assembly, the first lens assembly, the second lens assembly, and the third lens assembly are sequentially arranged along the optical axis.
  • the second driving chip is arranged on the carrying surface and is used to control the movement of the prism assembly in the first direction and the second direction to achieve optical anti-shake, and the optical axis, the first direction and the second direction are perpendicular to each other.
  • the first direction is parallel to the bearing surface and perpendicular to the optical axis
  • the second direction is perpendicular to the bearing surface
  • the bearing surface is parallel to the optical axis.
  • the number of effective control bits of the first driving chip and the second driving chip are both greater than or equal to 10, so that the minimum movement unit of the second lens assembly and the third lens assembly meets the predetermined movement accuracy.
  • the zoom lens further includes a fourth lens assembly disposed in the housing, and the second driving chip further includes a fifth control terminal, which is connected to the fourth lens assembly to control the fourth lens assembly along The optical axis moves relative to the first lens assembly.
  • the zoom lens includes an anti-shake driver
  • the second driver chip includes a first anti-shake control terminal and a second anti-shake control terminal. Both the first anti-shake control terminal and the second anti-shake control terminal are connected to the anti-shake control terminal.
  • the anti-shake driver is connected, the anti-shake driver is connected with the prism assembly, the first anti-shake control end is used to control the movement of the anti-shake driver to drive the movement of the prism assembly in the first direction, and the second anti-shake control end is used to control the anti-shake control
  • the shaking driving member moves to drive the movement of the prism assembly in the second direction.
  • the prism component includes a prism.
  • the prism includes an incident surface, a reflective surface, and an exit surface that are sequentially connected.
  • the first lens component is opposite to the incident surface or the exit surface, and the reflective surface is used to reflect light incident from the incident surface. So that the light is emitted from the exit surface.
  • the zoom lens further includes a first driving part and a second driving part.
  • the first control end is connected to the second lens assembly through the first driving part, and the first control end is used to control the movement of the first driving part.
  • the second control end, the third control end, and the fourth control end are all connected to the second driving part, the second driving part is connected to the third lens assembly, and the second The control end, the third control end and the fourth control end are all used to control the movement of the second driving member to drive the third lens assembly to move relative to the first lens assembly along the optical axis.
  • the first driving member includes a first coil and a first magnet
  • the second driving member includes a second coil and a second magnet
  • the first magnet and the second lens assembly are connected
  • the first control terminal is connected to the first coil.
  • the first control terminal is used to control the current input to the first coil to drive the first magnet to drive the second lens assembly to move relative to the first lens assembly along the optical axis.
  • the second control The second control terminal, the third control terminal and the fourth control terminal are all connected to the second coil.
  • the second control terminal, the third control terminal and the fourth control terminal are all used to control the current input to the second coil to drive the second magnet to drive the second coil.
  • the three-lens assembly moves relative to the first lens assembly along the optical axis.
  • the housing includes a substrate, the bearing surface of the substrate is provided with a slide rail, the surfaces of the second lens assembly and the third lens assembly opposite to the bearing surface are both provided with balls, the second lens assembly and the third lens
  • the ball of the assembly is slidably connected with the sliding rail, so that the second lens assembly and the third lens assembly move relative to the first lens assembly along the optical axis.
  • the third control terminal is also used to control the third lens assembly to stop moving when the sharpness of the image captured by the zoom lens reaches a preset sharpness
  • the second target focal length is also used to control the third lens assembly to stop moving when the sharpness of the image captured by the zoom lens reaches the preset sharpness, the first target focal length is in the short focus state, and the second target focal length is in the long focus state.
  • the electronic device of the embodiment of the present application includes a casing and the camera module of any of the above embodiments.
  • the camera module is installed on the casing.
  • the electronic device 1000 includes a casing 200 and a camera module 100.
  • the camera module 100 is combined with the casing 200.
  • the electronic device 1000 may be a mobile phone, a tablet computer, a display, a notebook computer, a teller machine, a gate, a smart watch, a head-mounted display device, a game console, and the like.
  • the embodiments of the present application are described by taking the electronic device 1000 as a mobile phone as an example. It can be understood that the specific form of the electronic device 1000 is not limited to a mobile phone.
  • the housing 200 can be used to install the camera module 100, or in other words, the housing 200 can be used as a mounting carrier of the camera module 100.
  • the electronic device 1000 includes a front 901 and a back 902.
  • the camera module 100 can be set on the front 901 as a front camera, and the camera module 100 can also be set on the back 902 as a rear camera. In the embodiment of the present application, the camera module 100 is set On the back 902 as a rear camera.
  • the housing 200 can also be used to install functional modules such as the camera module 100, power supply device, and communication device of the electronic device 1000, so that the housing 200 provides protections such as dustproof, anti-drop, and waterproof for the functional modules.
  • the camera module 100 includes a zoom lens 10 and a photosensitive element 50, and the photosensitive element 50 is installed on the image side of the zoom lens 10.
  • the photosensitive element 50 may be a complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) photosensitive element or a charge-coupled device (Charge-coupled Device, CCD) photosensitive element.
  • CMOS Complementary Metal Oxide Semiconductor
  • CCD Charge-coupled Device
  • the zoom lens 10 includes a housing 11, a first lens assembly 12, a second lens assembly 13, a third lens assembly 14 and a first driving chip 161.
  • the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are arranged in the housing 11.
  • the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are along the optical axis of the first lens assembly 12. O is arranged in sequence, and the optical axis O of the first lens assembly 12, the optical axis of the second lens assembly 13 and the optical axis of the third lens assembly 14 coincide.
  • the first driving chip 161 includes a first control terminal 1611, a second control terminal 1612, a third control terminal 1613, and a fourth control terminal 1614.
  • the first control terminal 1611 and the second control terminal 1612 are respectively used to control the second lens assembly 13 And the third lens assembly 14 move relative to the first lens assembly 12 along the optical axis O to achieve zooming of the zoom lens 10; the third control end 1613 is used to control the third lens assembly 14 along the optical axis O at the first target focal length Move relative to the first lens assembly 12 to achieve focusing of the zoom lens 10; the fourth control end 1614 is used to control the third lens assembly 14 to move relative to the first lens assembly 12 along the optical axis O at the second target focal length to achieve the zoom lens 10, the first target focal length and the second target focal length are not the same, the first target focal length is greater than the second target focal length, or the first target focal length is smaller than the second target focal length, in the embodiment of the application, the first target focal length is smaller than the first target focal length Two target focal lengths.
  • the moving range of the lens group during zooming is large, and the accuracy requirements for focusing after zooming are high.
  • the effective control position of the driving chip is small, it is difficult to achieve zoom while ensuring zoom The movement accuracy of the lens focus.
  • the first drive chip 161 controls the second lens assembly 13 and the third lens assembly 14 relative to the first lens assembly 12 along the optical axis O through the first control terminal 1611 and the second control terminal 1612, respectively.
  • the zoom lens 10 moves to achieve zooming of the zoom lens 10; when the zoom lens 10 is in a different focal length state (such as the first target focal length or the second target focal length), the third control end 1613 and the fourth control end 1614 are used to control the third
  • the lens assembly 14 moves to achieve the focusing of the zoom lens 10.
  • the third control end 1613 and the fourth control end 1614 are focusing, only the 14 elements of the third lens group need to be controlled under the corresponding current focal length to move within a smaller range of travel.
  • the first driving chip 161 has fewer effective control positions and can control the movement of the lens assembly (such as the second lens assembly 13 and the third lens assembly 14) with high precision.
  • the moving stroke range is relatively large, but the accuracy requirements are low.
  • the moving stroke range is small, but the accuracy requirements are high. Therefore, the zoom lens 10 is realized by reasonably distributing multiple control terminals of the drive chip. Zooming and focusing ensure the accuracy of focusing movement when the drive chip has fewer effective control bits.
  • the direction parallel to the optical axis O is defined as the x direction
  • the two directions perpendicular to the x direction are defined as the y direction and the z direction, namely, the x direction, the y direction and the z direction. Two by two are perpendicular to each other.
  • the zoom lens 10 includes a housing 11, a prism assembly 15, a first lens assembly 12, a second lens assembly 13, a third lens assembly 14 and a driving assembly 16.
  • the prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are sequentially arranged in the housing 11. Both the second lens assembly 13 and the third lens assembly 14 can move relative to the first lens assembly 12 along the optical axis O under the control of the driving assembly 16.
  • the housing 11 includes a base plate 111, a side plate 112, and a cover plate 113.
  • the base plate 111, the side plate 112 and the cover plate 113 enclose a receiving space 114, and the prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14 are all disposed in the receiving space 114.
  • the substrate 111 includes a bearing surface 1111.
  • the bearing surface 1111 is parallel to the optical axis O.
  • the carrying surface 1111 is used to carry the side plate 112, the prism assembly 15, the first lens assembly 12, the second lens assembly 13, and the third lens assembly 14.
  • the substrate 111 may be a rectangular parallelepiped structure, a cube structure, a cylindrical structure, or a structure of other shapes, etc., which is not limited herein. In this embodiment, the substrate 111 has a rectangular parallelepiped structure.
  • a sliding rail 1112 is opened on the bearing surface 1111.
  • the extending direction of the sliding rail 1112 is parallel to the x direction.
  • the number of sliding rails 1112 is one or more, for example, the number of sliding rails 1112 is one, two, three, four, or even more.
  • the number of slide rails 1112 is two (the two slide rails 1112 are represented by the first slide rail 1113 and the second slide rail 1114 respectively).
  • the extending directions of the first slide rail 1113 and the second slide rail 1114 are parallel to the x direction, and the second slide rail 1114 and the first slide rail 1113 are sequentially arranged along the y direction.
  • the first distance between the end of the first slide rail 1113 close to the prism component 15 and the prism component 15 and the second distance between the end of the second slide rail 1114 close to the prism component 15 and the prism component 15 can be Same or different.
  • the third distance between the end of the first slide rail 1113 away from the prism component 15 and the prism component 15 and the fourth distance between the end of the second slide rail 1114 away from the prism component 15 and the prism component 15 may be the same or different .
  • the difference between the first distance and the second distance may be: the first distance is greater than the second distance.
  • the first distance is smaller than the second distance.
  • the difference between the third distance and the fourth distance may be: the third distance is greater than the fourth distance.
  • the third distance is less than the fourth distance.
  • the first distance is greater than the second distance, and the third distance is greater than the fourth distance. In this way, the movement of the second lens assembly 13 and the third lens assembly 14 is restricted by the first sliding rail 1113 and the second sliding rail 1114.
  • the side plate 112 is arranged around the edge of the base plate 111.
  • the side plate 112 is perpendicular to the carrying surface 1111 of the substrate 111.
  • the side plate 112 can be arranged on the base plate 111 by means of gluing, screwing, snapping, or the like.
  • the side plate 112 can also be integrally formed with the base plate 111.
  • the side plate 112 includes a first side plate 1121 and a second side plate 1122 that are parallel to the x direction, and the first side plate 1121 and the second side plate 1122 are opposite to each other.
  • the cover plate 113 is disposed on the side plate 112. Specifically, the cover plate 113 can be installed on the upper surface 1123 of the side plate 112 by means of snapping, screwing, gluing, or the like.
  • the surface of the cover plate 113 opposite to the side plate 112 is provided with a light entrance 1131, and the depth direction of the light entrance 1131 can be perpendicular to the x direction, so that the camera module 100 has a periscope structure as a whole.
  • the light entrance 1131 is not a through hole, but a light-transmitting solid structure from which light can enter the receiving space 114 and enter the prism assembly 15.
  • the prism assembly 15 is disposed on the carrying surface 1111 of the substrate 111 and is located in the receiving space 114.
  • the prism assembly 15 includes a mounting table 151 and a prism 152.
  • the mounting table 151 is disposed on the carrying surface 1111 of the substrate 111. Specifically, the mounting table 151 can be installed on the carrying surface 1111 by gluing, screwing, snapping, etc., and the mounting table 151 can also be integrally formed with the substrate 111.
  • the mounting platform 151 is provided with a light inlet through hole 153, a light outlet through hole 154 and a receiving cavity 155.
  • the light inlet through hole 153 and the light outlet through hole 154 connect the accommodating cavity 155 and the accommodating space 114.
  • the light entrance through hole 153 is opposite to the light entrance 1131, and the light exit through hole 154 is opposite to the first lens assembly 12.
  • the prism 152 is disposed in the accommodating cavity 155, and the prism 152 can be installed on the mounting table 151 by means of gluing, clamping, or the like.
  • the prism 152 includes an incident surface 156, a reflecting surface 157 and an emitting surface 158.
  • the reflecting surface 157 obliquely connects the incident surface 156 and the emitting surface 158.
  • the angle between the reflecting surface 157 and the bearing surface 1111 can be 15 degrees, 30 degrees, 45 degrees, and 60 degrees. In this embodiment, the angle between the reflective surface 157 and the bearing surface 1111 is 45 degrees.
  • the incident surface 156 is opposite to the light through hole 153, and the exit surface 158 is opposite to the light through hole 154.
  • the reflective surface 157 is used to reflect the light incident from the incident surface 156 so that the light is emitted from the exit surface 158.
  • the prism 152 is used to change the exit direction of the light entering the light through hole 153.
  • the prism 152 may be a triangular prism 152.
  • the cross section of the prism 152 is a right-angled triangle. The two right-angled sides of the right-angled triangle are respectively formed by the incident surface 156 and the exit surface 158, and the hypotenuse of the right-angled triangle is formed by the reflective surface 157.
  • the first lens assembly 12 includes a first housing 121 and a first lens group 122.
  • the first lens group 122 is disposed in the first housing 121.
  • the first housing 121 is disposed in the accommodating space 114. Specifically, the first housing 121 can be installed on the carrying surface 1111 by gluing, screwing, snapping, etc., and the first housing 121 can also be integrally formed with the substrate 111.
  • the first housing 121 includes a light entrance hole 123, a light exit hole 124 and a receiving cavity 125.
  • the light inlet hole 123 and the light outlet hole 124 connect the receiving cavity 125 with the receiving space 114.
  • the light entrance hole 123 is opposite to the light exit hole 154 of the prism assembly 15, and the light exit hole 124 is opposite to the second lens assembly 13.
  • the first lens group 122 is located in the accommodating cavity 125, and the first lens group 122 can be installed in the first housing 121 by gluing, screwing, snapping, or the like.
  • the first lens group 122 is opposite to the exit surface 158 of the prism 152.
  • the first lens group 122 may have positive refractive power or negative refractive power. In this embodiment, the first lens group 122 has negative refractive power.
  • the first lens group 122 includes one or more first lenses 1221.
  • the first lens group 122 may include only one first lens 1221, and the first lens 1221 is a convex lens or a concave lens; or the first lens group 122 includes a plurality of first lenses 1221 (such as two, three, etc.).
  • the first lens 1221 may be a convex lens or a concave lens, or a part of a convex lens and a part of a concave lens.
  • the first lens group 122 includes two first lenses 1221.
  • the first lens 1221 may be a glass lens or a plastic lens.
  • the one or more first lenses 1221 may all be part of the revolving body, or part of the revolving body and part of the revolving body may be part of the revolving body.
  • each first lens 1221 is a part of the revolving body.
  • the first lens 1221 is first formed into a revolving lens S1 through a mold.
  • the revolving lens S1 is cut by a plane perpendicular to the optical axis O as a circle, and the diameter of the circle is R, and then The edge of the revolving lens S1 is cut to form the first lens 1221.
  • the shape of the first lens 1221 cut by the plane perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are respectively T1 and T2, T1/R ⁇ [0.5,1), T2/R ⁇ [0.5,1) .
  • T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc.
  • T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on.
  • the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000, the optical parameters of the zoom lens 10 (such as the effective optical area size of the first lens 1221).
  • the lenses in the first lens group 122 are directly manufactured using a special mold, and the cavity of the mold is a part of the rotating body whose specific ratios of T1/R and T2/R have been determined, so as to directly make the first lens 1221.
  • the first lens 1221 is a part of the revolving lens S1.
  • the volume is smaller, so that the overall volume of the zoom lens 10 is reduced, which is beneficial to the miniaturization of the electronic device 1000.
  • the second lens assembly 13 includes a second housing 131, a second lens group 132 and a first ball 133.
  • the second lens group 132 is installed in the second housing 131.
  • the second housing 131 drives the second lens group 132 to slide.
  • the second housing 131 is provided with a first light inlet 135 and a first light outlet 136 corresponding to the second lens group 132.
  • the second housing 131 is formed with a first accommodating space 137 for accommodating the second lens group 132, and the first accommodating space 137 communicates with the accommodating space 114 through the first light inlet 135 and the first light outlet 136.
  • the first light inlet 135 is opposite to the light outlet 124 of the first lens assembly 12, and the first light outlet 136 is opposite to the third lens assembly 14.
  • the second housing 131 also includes a first top surface 138 and a first bottom surface 139 opposite to each other (ie, the surface of the second housing 131 opposite to the bearing surface 1111).
  • the first top surface 138 is opposite to the cover plate 113.
  • the first bottom surface 139 is opposite to the carrying surface 1111 of the substrate 111.
  • the first bottom surface 139 is provided with a first groove 1391, the first rolling ball 133 is disposed in the first groove 1391 and abuts against the bottom of the sliding rail 1112, and the first rolling ball 133 and the sliding rail 1112 are slidably connected.
  • the first groove 1391 matches the shape of the first rolling ball 133.
  • the first rolling ball 133 has a spherical shape and the moving resistance is small.
  • the first groove 1391 is a semicircular groove.
  • the diameter of the first rolling ball 133 is It is equal to the diameter of the first groove 1391, that is, half of the first ball 133 is located in the first groove 1391.
  • the first rolling ball 133 and the first groove 1391 are relatively tightly combined.
  • the sliding rail 1112 can be a groove formed on the bearing surface 1111 whose extending direction is parallel to the x direction, and the sliding rail 1112 can also be a protrusion provided on the bearing surface 1111 with an extending direction parallel to the x direction.
  • the opposite surface of the bottom surface of the housing 131 is formed with a groove for mating with the first ball 133.
  • the sliding rail 1112 is a groove formed on the bearing surface 1111 with an extension direction parallel to the x direction.
  • the shape of the inner wall of the slide rail 1112 intercepted by the surface perpendicular to the x direction is a first arc
  • the outer contour of the first ball 133 intercepted by the surface perpendicular to the x direction is a second arc
  • the curvature of the first arc It has the same curvature as the second arc.
  • the number of the first groove 1391 is one or more.
  • the number of first grooves 1391 is one, two, three, four, or even more.
  • the number of first grooves 1391 is three.
  • the number of the first ball 133 may also be one or more.
  • the number of the first rolling balls 133 is the same as the number of the first grooves 1391, which is also three.
  • Three first grooves 1391 are provided on the first bottom surface 139 at intervals.
  • the number of slide rails 1112 can be determined according to the positions of the three first grooves 1391. For example, if the connection line of the three first grooves 1391 is parallel to the optical axis O, only one slide rail 1112 needs to be provided; for another example,
  • the three first grooves 1391 are divided into two groups (hereinafter referred to as the first group and the second group).
  • the first group includes one first groove 1391
  • the second group includes two first grooves 1391
  • the first group is not on the line connecting the two first grooves 1391 of the second group (that is, the three first grooves 1391 can form a triangle), and two slide rails 1112 are required to connect with the first group and the first group.
  • the two groups correspond respectively.
  • the three first grooves 1391 are divided into a first group and a second group.
  • the first group includes one first groove 1391
  • the second group includes two first grooves 1391.
  • the first group and the first group The slide rails 1113 correspond, and the second group corresponds to the second slide rails 1114.
  • the first group of corresponding first balls 133 slide in the first slide rail 1113, the second group of corresponding first balls 133 slide in the second slide rail 1113, and the first group of corresponding first balls 133 and second
  • the first ball 133 corresponding to the group is respectively restricted in the first slide rail 1113 and the second slide rail 1114, and the three first balls 133 enclose a triangle (the center of the first ball 133 located in the first slide rail 1113 is a triangle
  • the number of the first balls 133 is minimized to reduce the sliding resistance.
  • the opposite sides of the outer wall of the first ball 133 corresponding to the first group are interfered by the opposite sides of the inner wall of the first slide rail 1113, and the outer wall of the second group of corresponding first balls 133 is The opposite sides of the inner wall of the second slide rail 1114 interfere with the opposite sides, and the three first balls 133 form a triangle, which can prevent the second lens assembly 13 from shaking or tilting in the y direction, thereby ensuring the camera module The image quality of 100 is not affected.
  • the first distance is greater than the second distance, when the second lens assembly 13 slides in the x direction (that is, when it slides toward the first lens assembly 12), the first ball 133 corresponding to the first group is moved by the first slide rail 1114.
  • the end close to the prism assembly 15 is in contact with each other to restrict the second lens assembly 13 from continuing to slide toward the first lens assembly 12, thereby limiting the movement stroke of the second lens assembly 13.
  • the second lens group 132 is disposed in the first accommodating space 137.
  • the second lens group 132 may be installed in the first accommodating space 137 by means of gluing, screwing, snapping, or the like.
  • the second lens group 132 may have positive refractive power or negative refractive power. In this embodiment, the second lens group 132 has positive refractive power.
  • the second lens group 132 includes one or more second lenses 1321.
  • the second lens group 132 may include only one second lens 1321, and the second lens 1321 is a convex lens or a concave lens; or the second lens group 132 includes multiple second lenses 1321 (such as two, three, etc.), and multiple second lenses 1321
  • the two lenses 1321 may both be convex lenses or concave lenses, or part of them may be convex lenses and part of them may be concave lenses.
  • the second lens group 132 includes three second lenses 1321.
  • the second lens 1321 may be a glass lens or a plastic lens.
  • one or more of the second lenses 1321 may all be part of a revolving body, or part of a revolving body, and a part of a revolving body.
  • each second lens 1321 is a part of the revolving body.
  • the second lens 1321 is first formed into a revolving lens S1 through a mold.
  • the shape of the revolving lens S1 cut by a plane perpendicular to the optical axis O is a circle, and the diameter of the circle is R, and then the rotation of the revolving lens S1 The edge is cut to form a second lens 1321.
  • the shape of the second lens 1321 cut by the plane perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are respectively T1 and T2, T1/R ⁇ [0.5,1), T2/R ⁇ [0.5,1) .
  • T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc.
  • T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on.
  • the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000 and the optical parameters of the zoom lens 10 (such as the effective optical area size of the second lens 1321); or, the second lens 1321 They are all made directly using a special mold, and the cavity of the mold is a part of the revolving body whose specific ratios of T1/R and T2/R have been determined, so that the second lens 1321 is directly made. In this way, the second lens 1321 is a part of the revolving lens S1.
  • FIG. 8 is only used to illustrate the first lens 1221 and the second lens 1321, not to represent the size of the second lens 1321, and should not be understood as the size of the second lens 1321 and the size of the first lens 1221. the same.
  • the third lens assembly 14 includes a third housing 141, a third lens group 142 and a third ball 143.
  • the third lens group 142 is installed in the third housing 141.
  • the third housing 141 drives the third lens group 142 to slide.
  • the third housing 141 is provided with a second light inlet 145 and a second light outlet 146 corresponding to the third lens group 142.
  • the third housing 141 is formed with a second accommodating space 147 for accommodating the third lens group 142, and the second accommodating space 147 communicates with the accommodating space 114 through the second light inlet 145 and the second light outlet 146.
  • the second light inlet 145 is opposite to the first light outlet 136 of the second lens assembly 13, and the second light outlet 135 is opposite to the photosensitive element 50 (wherein, the photosensitive element 50 is disposed on the side plate 112 opposite to the second light outlet 135 On the inside surface).
  • the third housing 141 further includes a second top surface 148 and a second bottom surface 149 opposite to each other (the surface of the third housing 141 opposite to the bearing surface 1111).
  • the second top surface 148 is opposite to the cover plate 113.
  • the second bottom surface 149 is opposite to the carrying surface 1111 of the substrate 111.
  • the second bottom surface 149 is provided with a third groove 1491.
  • the third ball 143 is arranged in the third groove 1491 and abuts against the bottom of the sliding rail 1112.
  • the third ball 143 and the sliding rail 1112 are slidably connected.
  • the shape of the third groove 1491 matches the shape of the third ball 143.
  • the third ball 143 is spherical and has a small moving resistance.
  • the third groove 1491 is a semicircular groove.
  • the diameter of the third ball 143 The diameter is equal to that of the third groove 1491, that is, half of the third ball 143 is located in the third groove 1491.
  • the third rolling ball 143 and the third groove 1491 are relatively tightly combined. When the third rolling ball 143 moves, the third housing 141 of the third lens assembly 14 can be driven to move. After the third lens assembly 14 is installed in the receiving space 114, a part of the third ball 143 is located in the sliding rail 1112 and abuts against the bottom of the sliding rail 1112.
  • the shape of the inner wall of the slide rail 1112 intercepted by the surface perpendicular to the x direction is a first arc
  • the outer contour of the third ball 143 intercepted by the surface perpendicular to the x direction is a second arc
  • the curvature of the first arc It has the same curvature as the second arc.
  • the number of the third groove 1491 is one or more.
  • the number of third grooves 1491 is one, two, three, four, or even more.
  • the number of third grooves 1491 is three.
  • the number of the third ball 143 may also be one or more.
  • the number of third balls 143 is the same as the number of third grooves 1491, which is also three.
  • Three third grooves 1491 are arranged on the second bottom surface 149 at intervals.
  • the three third grooves 1491 are divided into a third group and a fourth group.
  • the third group includes a third groove 1491
  • the fourth group includes two third grooves 1491
  • the third group and the first group The slide rails 1113 correspond
  • the fourth group corresponds to the second slide rails 1114.
  • the third ball 143 corresponding to the third groove 1491 of the third group slides in the first slide rail 1113
  • the third ball 143 corresponding to the third groove 1491 of the fourth group slides in the second slide rail 1113.
  • the third ball 143 corresponding to the third group and the third ball 143 corresponding to the fourth group are respectively confined in the first slide rail 1113 and the second slide rail 1114.
  • the three third balls 143 form a triangle to ensure stable sliding.
  • the number of third balls 143 is minimized to reduce the sliding resistance.
  • the opposite sides of the outer wall of the third group of third balls 143 are opposed by the opposite sides of the inner wall of the first slide rail 1113, and the outer wall of the fourth group of third balls 143 is
  • the opposite sides of the inner wall of the second slide rail 1114 are in conflict with the opposite sides of the inner wall of the second slide rail 1114, and the three third balls 143 form a triangle, which can prevent the third lens assembly 14 from shaking or tilting in the y direction, thereby ensuring the camera module
  • the image quality of 100 is not affected.
  • the third ball 143 corresponding to the third group when the third lens assembly 14 slides in the opposite direction of the x direction (that is, when sliding toward the photosensitive element 50), the third ball 143 corresponding to the third group will first contact the first sliding rail 1113 near the photosensitive element 50 One end, thereby restricting the third lens assembly 14 to continue to slide in the opposite direction of the x direction, the first sliding rail 1113 can play a role in restricting the movement stroke of the third lens assembly 14.
  • the third ball 143 corresponding to the third group is resisted by the end of the first sliding rail 1114 away from the prism assembly 15 to restrict the second lens assembly 13 from continuing to slide toward the first lens assembly 12, thereby restricting the movement of the second lens assembly 13
  • the role of the itinerary compared to the first distance being equal to the second distance and the third distance being equal to the fourth distance, when the first distance is greater than the second distance and the third distance is greater than the fourth distance, the length of the first slide rail 1113 is smaller.
  • the third lens group 142 is disposed in the second accommodating space 147.
  • the third lens group 142 can be installed in the second accommodating space 147 by means of gluing, screwing, snapping, or the like.
  • the third lens group 142 may have positive refractive power or negative refractive power. In this embodiment, the third lens group 142 has negative refractive power.
  • the third lens group 142 includes one or more third lenses 1421.
  • the third lens group 142 includes only one third lens 1421, and the third lens 1421 is a convex lens or a concave lens; or the third lens group 142 includes multiple third lenses 1421 (such as two, three, etc.), and multiple third lenses.
  • the lens 1421 may be a convex lens or a concave lens, or a part of a convex lens and a part of a concave lens.
  • the third lens group 142 includes two third lenses 1421.
  • the third lens 1421 may be a glass lens or a plastic lens.
  • One or more of the third lenses 1421 may all be part of a revolving body, or part of a revolving body and a part of a revolving body.
  • each third lens 1421 is a part of the revolving body.
  • the third lens 1421 is first formed into a revolving lens S1 through a mold, and the shape of the revolving lens S1 cut by a plane perpendicular to the optical axis O is a circle, and the diameter of the circle is R, and then the rotation of the revolving lens S1 The edge is cut to form the third lens 1421.
  • the shape of the third lens 1421 cut by the surface perpendicular to the optical axis O is a rectangle, and the two sides of the rectangle are T1 and T2, respectively, T1/R ⁇ [0.5, 1), T2/R ⁇ [0.5, 1) .
  • T1/R can be 0.5, 0.6, 0.7, 0.75, 0.8, 0.95, etc.
  • T2/R can be 0.55, 0.65, 0.7, 0.75, 0.85, 0.9, and so on.
  • the specific ratio of T1/R and T2/R is determined according to factors such as the size of the internal space of the electronic device 1000, the optical parameters of the zoom lens 10 (such as the effective optical area size of the third lens 1421); or, the third The lenses 1421 are directly manufactured using a special mold, and the cavity of the mold is a part of the revolving body whose specific ratios of T1/R and T2/R have been determined, so that the third lens 1421 is directly manufactured.
  • the second lens 1321 is a part of the revolving lens S1.
  • the second lens 1321 has a smaller volume, so that the overall volume of the zoom lens 10 is reduced, which is beneficial to the miniaturization of the electronic device 1000.
  • FIG. 8 is only used to illustrate the first lens 1221, the second lens 1321, and the third lens 1421, and is not used to indicate the size of the third lens 1421, and should not be understood as the size and the third lens 1421
  • the size of the second lens 1321 and the size of the first lens 1221 are the same.
  • the driving assembly 16 includes a first driving part 162, a second driving part 163, an anti-shake driving part 164, a first driving chip 161 and a second driving chip 166.
  • the first driving chip 161 is connected to the first driving part 162 and the second driving part 163, and the second driving chip 166 is connected to the anti-shake driving part 164.
  • the first driving member 162 includes a first coil 1621 and a first magnet 1622.
  • the number of the first coil 1621 is one or more.
  • the number of the first coil 1621 is one, two, three, four, or even more.
  • the number of the first coil 1621 is one.
  • the first coil 1621 is disposed on the first side plate 1121 or the second side plate 1122.
  • the first coil 1621 is disposed on the inner surface of the first side plate 1121.
  • the first coil 1621 can be glued or screwed. It is installed on the first side plate 1121 by means of, snap-fitting, etc.
  • the first coil 1621 can be arranged at any position of the first side plate 1121.
  • the first coil 1621 can be arranged on the inner surface of the first side plate 1121 (ie, the surface located in the receiving space 114) and located on the second lens Between the group 132 and the third lens group 142; or, the first coil 1621 may be arranged on the inner surface of the first side plate 1121, and located between the first lens assembly 12 and the second lens assembly 13, etc., here is not Go into details again.
  • the first coil 1621 may be disposed on the inner surface of the first side plate 1121 and located between the second lens group 132 and the third lens group 142.
  • the first coil 1621 may be disposed on the first housing 121 and opposite to the first magnet 1622.
  • the first magnet 1622 is connected to the second lens group 132. Specifically, the first magnet 1622 is arranged on the second housing 131, and the first magnet 1622 can be arranged at any position of the second housing 131, for example, the first magnet 1622 is arranged On the surface of the second housing 131 opposite to the third housing 141, or, the first magnet 1622 is provided on the surface of the second housing 131 opposite to the first lens assembly 12, and so on. In this embodiment, the first magnet 1622 is provided on the surface of the second housing 131 opposite to the third housing 141.
  • the first magnet 1622 can be installed on the second housing 131 by gluing, screwing, snapping, or the like.
  • the first magnet 1622 may be a metal with magnetism.
  • the first magnet 1622 may be any one of iron, cobalt, and nickel, or the first magnet 1622 may be an alloy composed of at least two of iron, cobalt, and nickel. .
  • the second driving member 163 includes a second coil 1631 and a second magnet 1632.
  • the number of second coils 1631 is one, two, three, four, or even more. In this embodiment, the number of second coils 1631 is one.
  • the second coil 1631 is provided on the first side plate 1121 or the second side plate 1122. In this embodiment, the second coil 1631 is provided on the first side plate 1121.
  • the second coil 1631 can be glued, screwed, or snapped. It is installed on the first side plate 1121 in a similar manner. In other embodiments, there are two second coils 1631, and the two second coils 1631 are provided on the first side plate 1121 and the second side plate 1122, respectively.
  • the second coil 1631 can be arranged at any position of the side plate 112.
  • the second coil 1631 can be arranged on the inner surface of the first side plate 1121 and located between the second lens group 132 and the third lens group 142; or, The second coil 1631 may be disposed on the inner surface of the first side plate 1121 and located on the side of the third lens group 142 opposite to the second lens group 132; or, the second coil 1631 may be disposed on the side surface of the side plate 112.
  • the opposite inner surface of the third lens group 142 that is, the second coil 1631 is located on the side of the third lens group 142 opposite to the second lens group 132 and opposite to the second magnet 1632), etc., and will not be repeated here.
  • the second coil 1631 is disposed on the inner surface of the first side plate 1121 and is located on the side of the third lens group 142 opposite to the second lens group 132.
  • the second magnet 1632 is connected to the third lens group 142. Specifically, the second magnet 1632 is arranged on the third housing, and the second magnet 1632 can be arranged at any position of the third housing 141. For example, the second magnet 1632 is arranged on the third housing 141. The surface of the third housing 141 opposite to the second housing 131, or the second magnet 1632 is provided on the surface of the third housing 141 opposite to the photosensitive element 50, and so on. In this embodiment, the second magnet 1632 is disposed on the surface of the third housing 141 opposite to the photosensitive element 50, and the second magnet 1632 can be installed on the second housing 131 by gluing, screwing, snapping, or the like.
  • the second magnet 1632 may be a metal with magnetism.
  • the second magnet 1632 may be any one of iron, cobalt, and nickel, or the second magnet 1632 may be an alloy composed of at least two of iron, cobalt, and nickel. .
  • the first coil 1621 is provided at any position of the second housing 131, for example, the first coil 1621 is provided on the surface of the second housing 131 opposite to the third housing 141, or the first coil 1621 is provided On the surface of the second housing 131 opposite to the first lens assembly 12 and so on.
  • the first magnet 1622 is disposed on the first side plate 1121 or the second side plate 1122.
  • the first magnet 1622 is disposed on the first side plate 1121.
  • the first magnet 1622 is disposed on the inner surface of the first side plate 1121 and is located between the second lens group 132 and the third lens group 142.
  • the second coil 1631 is arranged at any position of the third housing 141.
  • the second coil 1631 is arranged on the surface of the third housing 141 opposite to the second housing 131, or the second coil 1631 is arranged on the surface of the third housing 141.
  • the second magnet 1632 is disposed on the first side plate 1121 or the second side plate 1122.
  • the second magnet 1632 is arranged on the first side plate 1121.
  • the second magnet 1632 is arranged on the inner surface of the first side plate 1121 and is located on the opposite side of the third lens group 142 from the second lens group 132.
  • the first driving member 162 and the second driving member 163 may also be linear motors, and the first driving member 162 is a stator of the first linear motor. It can be fixedly installed on the inner side of the side plate 112, the mover of the first linear motor extends from the stator and is connected to the second housing 131, and the stator of the second linear motor of the second driving member 163 is also fixedly installed on the side plate 112 On the inner surface of the second linear motor, the mover of the second linear motor extends from the stator and is connected to the third housing 141.
  • the second housing 131 When the mover of the first linear motor makes a linear expansion and contraction movement, the second housing 131 can be driven to be linear along the optical axis O. When moving, when the mover of the second linear motor makes a linear telescopic movement, the third housing 141 is thereby driven to move linearly along the optical axis O.
  • the first driving member 162 and the second driving member 163 may also have other structures, such as hydraulic structures, piezoelectric motors, etc., which will not be listed here.
  • the anti-shake driving member 164 includes a motor 1641 and a connecting frame 1642.
  • One end of the connecting frame 1642 is connected to the motor 1641, and the other end is connected to the housing 11, and the connecting frame 1642 is fixedly connected to the mounting table 151 of the prism assembly 15, and the mounting table 151 conflicts with the bearing surface 1111.
  • the motor 1641 may be a stepper motor.
  • the motor 1641 is used to drive the connecting frame 1642 to move in the first direction to drive the prism assembly 15 to move in the first direction, and the motor is also used to drive the connecting frame 1642 to move in the second direction to drive the prism assembly 15 to move in the second direction.
  • the first driving chip 161 includes a first control terminal 1611, a second control terminal 1612, a third control terminal 1613, and a fourth control terminal 1614.
  • the first driver chip 161 is connected to both the first driver 162 and the second driver 163.
  • the first control terminal 1611 is connected to the second lens assembly through the first driving member 161.
  • the first control terminal 1611 is connected to the first coil 1621, and the second control terminal 1612 and the third control terminal 1613 are both connected to the fourth control terminal. Both 1614 are connected to the second coil 1631.
  • the first driving chip 161 is disposed on the substrate 111, for example, the substrate 111 itself is a circuit board, and the first driving chip 161 is a part of the circuit board.
  • Wiring can be performed in the housing 11 to realize the connection of the first driving chip 161 with the first coil 1621 and the second coil 1631.
  • the first driving chip 161 is magnetically connected by the first coil 1621 and the first magnet 1622, and the second coil
  • the magnetic connection between 1631 and the second magnet 1632 is to realize the connection with the second lens assembly 13 and the third lens assembly 14 respectively.
  • the first driving chip 161 includes a plurality of pins.
  • the effective control bit of the first drive chip 161 is greater than or equal to 10, so that the minimum movement unit of the second lens assembly 13 and the third lens assembly 14 meets the predetermined movement accuracy, wherein the minimum movement unit is that the drive chip 161 can control the second lens
  • the minimum movement unit corresponding to the predetermined movement accuracy can be 0.5 ⁇ m, 1 ⁇ m, 2 ⁇ m, etc. In the embodiment of the present application, the minimum movement unit corresponding to the predetermined movement accuracy is 0.5 ⁇ m.
  • the effective control bits of the first driving chip 161 may be 10, 11, 12, 13, 14, 15, 16, and so on.
  • the effective control bit is the number of pins (hereinafter referred to as the first control pin) that can be used to control the movement of the lens assembly (such as the second lens assembly 13 and/or the third lens assembly 14) among all the pins of the first drive chip 161
  • the first control pin the number of pins that can be used to control the movement of the lens assembly
  • the effective control bit of the first driving chip 161 is 10.
  • the first driving chip 161 controls the signal output of the first control terminal 1611, the second control terminal 1612, the third control terminal 1613 and the fourth control terminal 1614 through 10 first control pins.
  • the first driver chip 161 can output current signals, voltage signals, etc. to the first control terminal 1611, the second control terminal 1612, the third control terminal 1613, and the fourth control terminal 1614.
  • the first driver chip 161 can output current signals to the first control terminal 1611, the second control terminal 1612, the third control terminal 1613, and the fourth control terminal 1614.
  • the second driving chip 166 is used to control the movement of the zoom lens 10 in the first direction and the second direction to achieve optical anti-shake, and the first direction and the second direction are perpendicular.
  • the first direction is parallel to the bearing surface 1111 and perpendicular to the optical axis O (ie, the first direction is the direction parallel to the y direction of the zoom lens 10), and the second direction is perpendicular to the bearing surface 1111 (ie, the second direction is the parallel zoom lens 10), that is, the optical axis O, the first direction, and the second direction are perpendicular to each other.
  • the zoom lens 10 can change the deviation of the optical path caused by the user's shaking, thereby offsetting the effect of the user's shaking on the shooting, and realizing optical protection. shake.
  • the zoom lens 10 realizes the optical image stabilization of the zoom lens through the second drive chip 166. Since the overall travel range of the zoom lens 10 is also small during the optical image stabilization, the second drive chip 166 can achieve high accuracy even if there are fewer effective control positions. Control the movement of the zoom lens to achieve optical image stabilization.
  • the second driving chip 166 includes a first anti-shake control terminal 1661 and a second anti-shake control terminal 1662. Both the first anti-shake control terminal 1661 and the second anti-shake control terminal 166 are connected to the anti-shake driving member 164.
  • the second driving chip 166 can also be arranged on the substrate 111, and the side plate 112, the connecting plate 1644 and the connecting arm 1643 are wired to be connected to the motor 1641; in other embodiments, the second driving chip 166 can be directly arranged on On the motor 166.
  • the first anti-shake control terminal 1661 and the second anti-shake control terminal 166 are both connected to the motor 1641.
  • the first anti-shake control terminal 1661 controls the movement of the zoom lens 10 in the first direction by controlling the motor 1641
  • the second anti-shake control terminal 1662 controls the movement of the zoom lens 10 in the second direction by controlling the motor 1641 to work.
  • the optical image stabilization is realized.
  • the second driving chip 166 includes a plurality of pins.
  • the effective control bit of the second driving chip 166 is greater than or equal to 10.
  • the effective control bit of the second driving chip 166 may be 10, 11, 12, 13, 14, 15, 16, and so on.
  • the effective control bit is the number of pins that can be used to control the overall movement of the zoom lens 10 (hereinafter referred to as the second control pin) among all the pins of the second drive chip 166.
  • the second drive chip 166 can be used to control the zoom lens 10
  • the number of pins moved as a whole is 10 (that is, the number of second control pins is 10), and the effective control bit of the second driving chip 166 is 10.
  • the second driving chip 166 controls the signal output of the first anti-shake control terminal 1661 and the second anti-shake control terminal 1662 through 10 second control pins.
  • the second driver chip 166 can output current signals, voltage signals, etc. to the first anti-shake control terminal 1661 and the second anti-shake control terminal 1662.
  • the second driver chip 166 can output current signals, voltage signals, etc. to the first anti-shake control terminal 1661.
  • the terminal 1661 and the second anti-shake control terminal 1662 output current signals.
  • the precision required by the zoom lens 10 is relatively low, for example, 2 micrometers ( ⁇ m).
  • the second lens assembly 13 and the third lens assembly 14 are respectively controlled to move at least 2 microns.
  • the first driving chip 161 can output 2 ⁇ 10 different current signals through 10 first control pins, that is, both the first control terminal 1611 and the second control terminal 1612 can output 2 ⁇ 10 different current signals, then
  • the distance between the end points can be up to 4096 ⁇ m.
  • the moving accuracy of the zoom lens 10 during focusing and optical image stabilization needs to be less than or equal to 0.5 micron to ensure the accuracy of the focusing and optical image stabilization of the zoom lens 10, while adjusting Errors caused by low zoom accuracy.
  • the movement accuracy of the zoom lens 10 during focusing is equal to 0.5 ⁇ m, which means that each time the third control terminal 1613 and the fourth control terminal 1614 output a different current signal, the third lens assembly 14 must move at least 0.5 ⁇ m.
  • the zoom lens 10 as a whole must move at least 0.5 ⁇ m, and the first drive chip 161 passes through the 10th One control pin can output 2 ⁇ 10 different current signals, that is, the third control terminal 1613 and the fourth control terminal 1614 can output 2 ⁇ 10 different current signals, the third lens assembly 14 can be at the maximum when focusing
  • the second driving chip 166 can also output 2 ⁇ 10 different current signals through the 10 second control pins.
  • the first anti-shake control terminal 1661 and the second anti-shake control terminal 1662 can output 2 ⁇ 10 different current signals.
  • the maximum can be 512 ⁇ m.
  • the user can manually select the telephoto mode or the short focus mode.
  • the telephoto mode is usually used to shoot distant objects with a small viewing range and short focus.
  • the focus mode (commonly known as the wide-angle mode) is usually used to shoot close objects with a larger viewing range.
  • the processor of the mobile phone will issue a control instruction.
  • the first driving chip 161 After receiving the control instruction, the first driving chip 161 starts to control the second lens assembly 13 and the third lens assembly 14 to face each other along the optical axis O.
  • the first lens assembly 12 moves to switch the zoom lens 10 between the first target focal length and the second target focal length.
  • the first target focal length may be a short-focus state
  • the second target focal length may be a long-focus state.
  • the first control terminal 1611 outputs a current signal to control the current input into the first coil 1621.
  • the Lorentz force is generated between the first coil 1621 and the first magnet 1622.
  • the first magnet 1622 is pushed by the Lorentz force to drive the second lens assembly 13 along the first slide rail 1113 and the second slide rail 1114
  • the first control terminal 1611 can control the direction of the Lorentz force by controlling the direction of the current input into the first coil 1621, so that the second lens assembly 13 moves in the x direction or the direction opposite to the x direction, as
  • the current signal output by the first driving chip 161 changes, and the current input to the first coil 1621 changes at the same time, and the second lens assembly 13 can be in a fixed travel range (hereinafter referred to as the first travel range, as shown in the figure
  • the AB section of the slide rail in 9a and 9b moves within [0 ⁇ m
  • the stroke of the second lens assembly 13 also changes, where the stroke S (unit The corresponding relationship between ⁇ m) and current I (unit: milliampere (ma)) is shown in Figure 10.
  • the stroke corresponding to position A is 0um
  • the stroke corresponding to position B is 4096um.
  • the Lorentz force required to move the second lens assembly 13 is also different, and the corresponding current required is also different, for example, when the mobile phone is in a vertical state (that is, perpendicular to the ground) .
  • the second lens assembly 13 moves toward the ground (that is, the opposite direction of the x direction)
  • the Lorentz force F1 plus the gravity of the second lens assembly 13 is greater than that between the second lens assembly 13 and the slide rail.
  • the static friction force can drive the second lens assembly 13 to move.
  • the required Lorentz force F1 is small, as shown in the curve S1 in FIG. 10, and the corresponding current I1 is small when the stroke of the second lens assembly 13 starts to change.
  • the Lorentz force F2 is greater than the gravity of the second lens assembly 13 plus the static friction between the second lens assembly 13 and the sliding rail, Then the second lens assembly 13 is driven to move. At this time, the required Lorentz force F2 is relatively large, as shown in the curve S3 in FIG. 10, and the corresponding current I2 is relatively large when the stroke of the second lens assembly 13 starts to change.
  • the second control terminal 1612 outputs a current signal to control the current input into the second coil 1631.
  • the Lorentz force is generated between the second coil 1631 and the second magnet.
  • the second magnet is pushed by the Lorentz force to drive the third lens assembly 14 to move along the first slide rail and the second slide rail, and the second control end 1612
  • the direction of the Lorentz force can be controlled by controlling the direction of the current input into the second coil 1631, so that the second lens assembly 13 moves in the x direction or the direction opposite to the x direction, following the output of the first driving chip 161
  • the current signal changes, the current input into the second coil 1631 changes at the same time, the third lens assembly 14 can be in a fixed travel range (hereinafter referred to as the second travel range, for example, the second travel range is the slide rail in Figure 9a and Figure X
  • the CD segment moves within [0 ⁇ m, 4096 ⁇ m
  • the stroke of the third lens assembly 14 also changes.
  • the corresponding relationship between the stroke and current is shown in Figure 10, Figure X.
  • the stroke corresponding to position C is 0um
  • the stroke corresponding to position D is 4096um.
  • the Lorentz force required to move the third lens assembly 13 is also different
  • the corresponding current required is also different, due to the Lorentz force required to move the third lens assembly 13
  • the corresponding current changes are basically the same as the Lorentz force required to move the third lens assembly 13 and the corresponding current changes.
  • the second lens assembly 13 and the third lens assembly 14 respectively correspond to different strokes.
  • the strokes of the second lens assembly 13 and the third lens assembly 14 are p0 and m0, respectively; in the short focus state, the strokes of the second lens assembly 13 and the third lens assembly 14 are p1 and the strokes respectively m1, where p0 and p1 are located in the first travel range, and m0 and m1 are located in the second travel range.
  • the mapping curve of the stroke S and the current I can be determined, for example, a mobile phone In a horizontal state, the currents I4 and I5 corresponding to p0 and p1 can be determined according to the mapping curve S2, and the currents I6 and I7 corresponding to m0 and m1 respectively.
  • the second lens assembly 13 is initially at the A position, and the third lens assembly 14 Initially at the C position, the first control terminal 1611 controls the input current of the first coil 1621 to I4, and the second control terminal 1612 controls the input current of the second coil 1631 to I6, and the second lens assembly 13 can be moved to p0.
  • the third lens assembly 14 is moved to the m0 position, so that the zoom lens 10 is switched to the telephoto state.
  • the second lens assembly 13 is initially at the A position, and the third lens assembly 14 is initially at the C position.
  • the first control terminal 1611 controls the input current to the first coil 1621 to I5, and the second control terminal 1612 controls the input second
  • the current of the coil 1631 is I7, that is, the second lens assembly 13 is moved to the p1 position, and the third lens assembly 14 is moved to the m1 position, so that the zoom lens 10 is switched to the short focus state.
  • the zoom lens 10 when the zoom lens 10 is in the short-focus state (as shown in FIG. 7a), the first-axis distance z11 between the first lens group 122 and the second lens group 132 is greater than when the zoom lens 10 is in the long-focus state (The state shown in FIG. 7b)
  • the first on-axis distance between the first lens group 122 and the second lens group 132 is z12.
  • the second lens group 132 and the third lens group 142 are The on-axis distance z21 is greater than the second on-axis distance z21 between the second lens group 132 and the third lens group 142 when the zoom lens 10 is in the telephoto state.
  • the zoom lens 10 when the zoom lens 10 changes from the short focus state to the long focus state, the second lens group 132 moves closer to the first lens group 122 (the pitch on the first axis decreases), and the third lens group 142 moves closer to the second lens group.
  • the lens group 132 moves, and the pitch on the second axis decreases.
  • the first on-axis distance z11 when the zoom lens 10 is in the short focus state is smaller than the first on-axis distance z12 when the zoom lens 10 is in the long focus state, and the second on-axis distance when the zoom lens 10 is in the short focus state.
  • the on-axis spacing z21 is smaller than the second on-axis spacing z22 when the zoom lens 10 is in the telephoto state; or, the first on-axis spacing z11 when the zoom lens 10 is in the short focus state is smaller than the first when the zoom lens 10 is in the telephoto state.
  • the on-axis spacing z12, the second on-axis spacing z21 when the zoom lens 10 is in the short focus state is greater than the second on-axis spacing z22 when the zoom lens 10 is in the long focus state, etc., the zoom lens 10 switches from the short focus state to the long focus state
  • the change trend of the distance z1 on the first axis and the distance z2 on the second axis can be determined according to the parameters of the first lens group 122 to the third lens group 142 (such as surface parameters, aspheric coefficient parameters, etc.). This will not be listed one by one.
  • the zoom lens 10 varies the focal length according to the magnitude of the reduction of the pitch on the first axis and the pitch on the second axis. For example, as the pitch on the first axis and the pitch on the second axis gradually decrease, the zoom The focal length of the lens 10 gradually increases. For another example, as the distance on the first axis and the distance on the second axis gradually decrease, the focal length of the zoom lens 10 gradually increases, and so on. In this embodiment, as the distance on the first axis and the distance on the second axis gradually decrease, the focal length of the zoom lens 10 gradually increases. In this way, the zoom lens 10 can control the focal length to gradually change.
  • the focal length gradually changes from 1 times the initial focal length to the initial focal length (the initial focal length is when the zoom lens 10 is at The focal length in the short-focus state) is 10 times, so that the zoom lens 10 realizes a 10 times optical zoom.
  • the moving stroke range of the second lens assembly 13 and the third lens assembly 14 is relatively large. Due to the limitation of the effective control position of the first driving chip 161, the first control terminal 1611 and the second control terminal 1611 and the second The control end 1612 respectively controls the movement of the second lens assembly 13 and the third lens assembly 14 with precision lower than the precision required for focusing. After the zooming is completed, high-precision focusing can be performed to ensure that the zoom lens 10 achieves accurate focus adjustment. , So as to improve the image quality.
  • the mobile phone can obtain the image of the subject through the camera module 100, and at the same time determine whether the sharpness of the image reaches the preset sharpness in real time, and the sharpness of the image can be obtained by calculating the contrast ratio of the image.
  • the light sequentially passes through the light entrance 1131 of the cover plate 113 and the light entrance through hole 153 of the prism assembly 15 and is reflected by the reflective surface 157 of the prism 152 and then exits from the light exit through hole 154, and then the light passes through the first lens in turn.
  • the second light inlet 145, the third lens group 142, and the second light outlet 146 finally reach the photosensitive element 50 for imaging.
  • the focusing process is to slightly adjust the focal length, which is larger than zooming. In terms of adjusting the focal length, the focusing process does not change the current state of the zoom lens 10 (such as the short focus state or the long focus state).
  • the zoom lens 10 is in a short-focus state (ie, as shown in FIG. 9a, the second lens assembly 13 is located at the position p0, and the third lens assembly 14 is located at the position m0), the third control end 1613 Control the current input to the second coil 1631 so that the third lens group starts to move with P0 as the starting position, and moves with the minimum movement accuracy (such as 0.5 ⁇ m) each time.
  • the focus stroke range is [0 ⁇ m, 512 ⁇ m] ( The position E and position F in Fig. 9a correspond to 0 ⁇ m and 512 ⁇ m, respectively, and the m0 position corresponds to 256 ⁇ m in the stroke range.
  • the third control end 1613 can control the third lens assembly 14 to move along the x direction, each time it moves ( That is, move 0.5 ⁇ m), that is, obtain the sharpness of the image of the subject once and determine whether the sharpness reaches the preset sharpness. If the sharpness does not reach the preset sharpness until the position E is moved, control the first The three lens assembly 14 is quickly moved to the m0 position (for example, the current input to the second coil 1631 is just enough to make the third lens assembly 14 move 256 ⁇ m in the opposite direction of the x direction), and then the third lens assembly 14 is controlled in the opposite direction of the x direction Continue to move to the F position, until the sharpness of the image of the subject reaches the preset sharpness to determine that the focusing is completed, at this time the third control terminal 1613 controls the third lens assembly 14 to stop moving.
  • the zoom lens 10 is in a telephoto state (ie, as shown in FIG. 9b, the second lens assembly 13 is located at the position p1, and the third lens assembly 14 is located at the position m1), and the fourth control end 1614
  • the current input to the second coil 1631 is controlled so that the third lens group starts to move with P1 as the starting position, and moves with the minimum movement accuracy (such as 0.5 ⁇ m) each time.
  • the focus stroke range is [0 ⁇ m, 512 ⁇ m] ( The G and H positions in Figure 9b correspond to 0 ⁇ m and 512 ⁇ m, respectively, and the m1 position corresponds to 256 ⁇ m in the stroke range), the fourth control end 1614 can control the third lens assembly 14 to move along the x direction, each time it moves ( That is, move 0.5 ⁇ m), that is, obtain the sharpness of the image of the subject once and determine whether the sharpness reaches the preset sharpness.
  • control the first The three lens assembly 14 quickly moves to the m1 position (for example, controlling the current input to the second coil 1631 can just make the third lens assembly 14 move 256 ⁇ m in the opposite direction of the x direction), and then control the third lens assembly 14 in the opposite direction of the x direction Continue to move to the H position until the sharpness of the image of the subject reaches the preset sharpness to determine that the focusing is completed, at this time the fourth control end 1614 controls the third lens assembly 14 to stop moving.
  • the focus of the zoom lens 10 in the short focus state and the long focus state can be accurately completed, and since the movement formation range during focusing in the short focus state and the long focus state is small, the first driving chip 161 With fewer effective control bits (such as 10 bits), the third lens assembly 14 can be controlled to move with high precision (at least 0.5 ⁇ m each time), thereby ensuring the accuracy of focusing.
  • the user uses the mobile phone to shoot, because the user generally does not use a stabilizer (such as a handheld pan-tilt, etc.) to shoot, the user's hand shake may cause the zoom lens 10 to be affected by the shaking and make the captured image blurry.
  • a gyroscope is installed to detect the user’s jitter. After obtaining the user’s jitter data, the processor can generate a corresponding movement control instruction and send it to the second driver chip 166.
  • the second driver chip 166 passes the fourth and fifth The control terminal 1661 and the second anti-shake control terminal 1662 respectively control the motor 1641 to drive the connecting frame 1642 to move in the first direction to drive the zoom lens 10 to move in the first direction and control the motor 1641 to drive the connecting frame 1642 to move in the second direction to drive the zoom The lens 10 moves in the second direction, so as to offset the influence of the user's shaking on the shooting, and realize optical anti-shake.
  • the zoom lens 10 further includes a fourth lens assembly 17 disposed in the housing 11, and the second driving chip 166 further includes a fifth control terminal 1663, a fifth control terminal 1663 is used to control the movement of the 17 pieces of the fourth lens group relative to the first lens assembly 12 along the optical axis O.
  • the zoom lens 10 can be provided with a movable fourth lens assembly 17, a first lens assembly 12, a second lens assembly 13, and a third lens assembly in order to achieve a larger range of focal length changes, such as a 50x optical zoom.
  • 14 and the fourth lens assembly 17 are sequentially arranged along the optical axis O, and the fourth lens assembly 17 is controlled to move in the x direction or the opposite direction of the x direction through the fifth control end 1663, so as to achieve a larger focal length change.
  • the cover 113 may further include a cover body 1132 and a boss 1133, the boss 1133 is connected to the cover body 1132, the first lens assembly 12 is disposed in the boss 1133, The first lens group 122 of a lens assembly 12 is opposite to the incident surface 156 of the prism 152.
  • the boss 1133 is provided with an installation space 1135, the installation space 1135 is in communication with the accommodating space 114, the first lens assembly 12 is arranged in the installation space 1135, and the first lens assembly 12 is formed with an optical axis O', an optical axis O'and a light Axis O is vertical.
  • the first lens assembly 12 can be installed in the installation space 1135 by means of gluing, screwing, snapping, etc., and the first lens assembly 12 can also be integrally formed with the boss 1133.
  • the end surface of the boss 1133 opposite to the prism assembly 15 is provided with a light entrance 1131, and the depth direction of the light entrance 1131 can be parallel to the optical axis O', so that the camera module 100 has a periscope structure as a whole.
  • the light entrance 1131 is opposite to the light entrance hole 123 of the first housing 121, and the light exit hole 124 is opposite to the light entrance through hole 153 of the prism assembly 15. In this way, the length of the zoom lens 10 in a certain direction (such as the x direction) can be reduced.
  • the first top surface 138 is provided with a second groove 1381
  • the second lens assembly 13 further includes a second ball 134
  • the second ball 134 is disposed on the first top surface 138.
  • the two grooves 1381 are inside and conflict with the cover plate 113.
  • the second groove 1381 matches the shape of the second ball 134.
  • the second ball 134 has a spherical shape with a small moving resistance.
  • the second groove 1381 is a semicircular groove.
  • the diameter of the second ball 134 It is equal to the diameter of the second groove 1381, that is, half of the second ball 134 is located in the second groove 1381.
  • the second rolling ball 134 and the second groove 1381 are relatively tightly combined. When the second rolling ball 134 moves, the second housing 131 of the second lens assembly 13 can be driven to move.
  • the number of the second groove 1381 is one or more.
  • the number of second grooves 1381 is one, two, three, four, or even more. In this embodiment, the number of second grooves 1381 is three.
  • the number of the second ball 134 may also be one or more.
  • the number of the second balls 134 is the same as the number of the second grooves 1381, which is also three.
  • Three second grooves 1381 are provided on the first top surface 138 of the second housing 131 at intervals.
  • the second ball 134 is arranged in the second groove 1381 and abuts against the cover plate 113, so that the second lens assembly 13 is confined between the cover plate 113 and the substrate 111, which can prevent the second lens assembly 13 from shaking or shaking in the z-direction. Tilt to ensure that the image quality is not affected.
  • the surface of the cover plate 113 opposite to the first top surface 138 is formed with a slide 1134, and the second ball 134 is arranged in the second groove 1381 and Conflict with the bottom of the slide 1134.
  • the slideway 1134 may be a groove formed on the surface of the cover plate 113 opposite to the first top surface 138 with an extension direction parallel to the x direction, and the slideway 1134 may also be a groove provided on the cover plate 113 and the first top surface.
  • the protrusion on the surface opposite to the surface 138 extends in parallel to the x direction, and the surface of the protrusion opposite to the first top surface 138 of the second housing 131 is formed with a groove that cooperates with the second ball 134.
  • the slideway 1134 is a groove formed on the surface of the cover plate 113 opposite to the first top surface 138 and the extending direction is parallel to the x direction.
  • a part of the second ball 134 is located in the slideway 1134 and conflicts with the bottom of the slideway 1134.
  • the shape of the inner wall of the slideway 1134 intercepted by the surface perpendicular to the x direction is a third arc
  • the outer contour of the second ball 134 intercepted by the surface perpendicular to the x direction is a fourth arc
  • the curvature of the third arc is equal to The curvature of the fourth arc is the same.
  • the number of slideways 1134 can be determined according to the positions of the three second grooves 1381. For example, if the connection line of the three second grooves 1381 is parallel to the optical axis O, only one slideway 1134 needs to be provided; for another example,
  • the three second grooves 1381 are divided into two groups (hereinafter referred to as the fifth group and the sixth group).
  • the fifth group includes a second groove 1381
  • the sixth group includes two second grooves 1381
  • the second groove 1381 is not on the line connecting the two second grooves 1381 of the sixth group (that is, the three second grooves 1381 can form a triangle), and two slideways 1134 and the fifth group and the first groove 1134 are required.
  • the six groups correspond respectively.
  • the three second grooves 1381 are divided into a fifth group and a sixth group.
  • the fifth group includes one second groove 1381
  • the sixth group includes two second grooves 1381.
  • the number of slides 1134 is Two (hereinafter referred to as the first chute 1157 and the second chute 1158), the fifth group corresponds to the first chute 1157, and the sixth group corresponds to the second chute 1158.
  • the second ball 134 corresponding to the fifth group slides in the first slide 1157
  • the second ball 134 corresponding to the sixth group slides in the second slide 1113
  • the second ball 134 and the sixth group corresponding to the fifth group slide.
  • the second ball 134 corresponding to the group is respectively confined in the first slide 1157 and the second slide 1158, and the three second balls 134 form a triangle. On the premise of ensuring the sliding stability, minimize the amount of the second ball 134 The quantity can reduce the sliding resistance.
  • the second top surface 148 is provided with a fourth groove 1481
  • the third lens assembly 14 further includes a fourth ball 144
  • the fourth ball 144 is arranged on the The four grooves 1481 are inside and conflict with the cover plate 113.
  • the fourth groove 1481 matches the shape of the fourth ball 144.
  • the fourth ball 144 has a spherical shape with low moving resistance.
  • the fourth groove 1481 is a semicircular groove.
  • the diameter of the fourth ball 144 The diameter is equal to that of the fourth groove 1481, that is, half of the fourth ball 144 is located in the fourth groove 1481.
  • the fourth rolling ball 144 and the fourth groove 1481 are relatively tightly combined. When the fourth rolling ball 144 moves, the third housing 141 of the third lens assembly 14 can be driven to move.
  • the number of the fourth groove 1481 is one or more.
  • the number of fourth grooves 1481 is one, two, three, four, or even more. In this embodiment, the number of fourth grooves 1481 is three.
  • the number of the fourth ball 144 may also be one or more.
  • the number of the fourth balls 144 is the same as the number of the fourth grooves 1481, which is also three.
  • Three fourth grooves 1481 are arranged on the second top surface 148 of the third housing 141 at intervals.
  • the fourth ball 144 is disposed in the fourth groove 1481 and abuts against the cover plate 113, so that the third lens assembly 14 is confined between the cover plate 113 and the substrate 111, which can prevent the third lens assembly 14 from shaking or shaking in the z direction. Tilt to ensure that the image quality is not affected.
  • the surface of the cover plate 113 opposite to the second top surface 148 is formed with a slide 1134, and the fourth ball 144 is arranged in the fourth groove 1481 and Conflict with the bottom of the slide 1134.
  • a part of the fourth ball 144 is located in the slideway 1134 and conflicts with the bottom of the slideway 1134.
  • the shape of the inner wall of the slideway 1134 intercepted by the surface perpendicular to the x direction is a third arc
  • the outer contour of the fourth ball 144 intercepted by the surface perpendicular to the x direction is a fourth arc
  • the curvature of the third arc is equal to The curvature of the fourth arc is the same.
  • the outer wall of the fourth ball 144 and the inner wall of the slide 1134 are tightly combined, and the opposite sides of the outer wall of the fourth ball 144 are opposed by the opposite sides of the inner wall of the slide 1134.
  • the three fourth grooves 1481 are divided into a seventh group and an eighth group.
  • the seventh group includes a fourth groove 1481
  • the eighth group includes two fourth grooves 1481
  • the chute 1157 corresponds
  • the eighth group corresponds to the second chute 1158.
  • the fourth ball 144 corresponding to the seventh group slides in the first slide 1157
  • the fourth ball 144 corresponding to the eighth group slides in the second slide 1113
  • the fourth ball 144 and the eighth group corresponding to the seventh group slide.
  • the corresponding fourth balls 144 are respectively restricted in the first slide 1157 and the second slide 1158.
  • the three fourth balls 144 form a triangle. On the premise of ensuring the sliding stability, minimize the fourth ball 144 The quantity can reduce the sliding resistance.
  • first and second are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features.
  • the features defined with “first” and “second” may explicitly or implicitly include at least one feature.
  • a plurality of means at least two, for example two, three, unless otherwise specifically defined.

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  • General Physics & Mathematics (AREA)
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  • Lens Barrels (AREA)

Abstract

一种变焦镜头(10)、相机模组(100)和电子装置(1000)。变焦镜头(10)的第一控制端(1611)和第二控制端(1612)分别控制第二透镜组件(13)和第三透镜组件(14)移动以变焦；第三控制端(1613)和第四控制端(1614)分别在第一目标焦距下控制第三透镜组件(14)移动以对焦和在第二目标焦距下控制第三透镜组件(14)移动以对焦，第一目标焦距和第二目标焦距不相同。

Description

变焦镜头、相机模组和电子装置
优先权信息
本申请请求2019年12月31日向中国国家知识产权局提交的、专利申请号为201911417951.8的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本申请涉及消费性电子技术领域，尤其是涉及一种变焦镜头、相机模组和电子装置。
背景技术
在相关技术中，变焦镜头可通过透镜组的移动实现整体焦距的变化，然而目前的驱动芯片大多只适用于实现定焦镜头的对焦以及光学防抖，由于对焦时透镜组移动行程范围较小，实现光学防抖时变焦镜头整体的移动行程范围也较小，驱动芯片有效控制位即使较小也能够高精度控制透镜组的移动。
发明内容
本申请的实施方式提供一种变焦镜头、相机模组和电子装置。
本申请实施方式的变焦镜头包括壳体、第一透镜组件、第二透镜组件、第三透镜组件、第一驱动芯片和第二驱动芯片。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件设置在壳体内。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述第一透镜组件的光轴依次设置。所述第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，所述第一控制端和所述第二控制端分别用于控制所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动，以实现所述变焦镜头的变焦。所述第三控制端用于在第一目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦；所述第四控制端用于在第二目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦，所述第一目标焦距和所述第二目标焦距不相同。
本申请实施方式的相机模组包括感光元件和变焦镜头。所述感光元件设置在所述变焦镜头的像侧。所述变焦镜头包括壳体、第一透镜组件、第二透镜组件、第三透镜组件、第一驱动芯片和第二驱动芯片。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件设置在壳体内。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述第一透镜组件的光轴依次设置。所述第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，所述第一控制端和所述第二控制端分别用于控制所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动，以实现所述变焦镜头的变焦。所述第三控制端用于在第一目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦；所述第四控制端用于在第二目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦，所述第一目标焦距和所述第二目标焦距不相同。
本申请的电子装置包括机壳和上述实施方式的相机模组。所述相机模组安装在所述机壳上。所述相机模组包括感光元件和变焦镜头。所述感光元件设置在所述变焦镜头的像侧。所述变焦镜头包括壳体、第一透镜组件、第二透镜组件、第三透镜组件、第一驱动芯片和第二驱动芯片。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件设置在壳体内。所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述第一透镜组件的光轴依次设置。所述第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，所述第一控制端和所述第二控制端分别用于控制所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动，以实现所述变焦镜头的变焦。所述第三控制端用于在第一目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦；所述第四控制端用于在第二目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦，所述第一目标焦距和所述第二目标焦距不相同。
本申请的实施方式的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实施方式的实践了解到。
附图说明
本申请的实施方式的上述和/或附加的方面和优点从结合下面附图对实施方式的描述中将变得明显和容易理解，其中：
图1是本申请某些实施方式的电子装置的平面示意图。
图2是本申请某些实施方式的电子装置另一视角的平面示意图。
图3是本申请某些实施方式的变焦镜头的立体装配示意图。
图4是本申请某些实施方式的变焦镜头的立体分解示意图。
图5是本申请某些实施方式的第一驱动芯片的平面示意图。
图6是本申请某些实施方式的第二驱动芯片的平面示意图。
图7a和图7b是图3中的变焦镜头在不同焦距状态下沿VI-VI线的截面示意图。
图8是某些实施方式中变焦镜头的透镜的平面示意图。
图9a和图9b是某些实施方式中第二透镜组件和第三透镜组件在不同焦距状态下位置示意图。
图10是某些实施方式中变焦镜头的第二透镜组件和第三透镜组件的行程和电流的关系示意图。
图11是某些实施方式中变焦镜头被与图3中VI-VI线对应的剖面线截得的截面示意图。
图12是图3中的变焦镜头沿XI-XI线的截面示意图。
具体实施方式
以下结合附图对本申请的实施方式作进一步说明。附图中相同或类似的标号自始至终表示相同或类似的元件或具有相同或类似功能的元件。另外，下面结合附图描述的本申请的实施方式是示例性的，仅用于解释本申请的实施方式，而不能理解为对本申请的限制。
以下结合附图对本申请的实施方式作进一步说明。附图中相同或类似的标号自始至终表示相同或类似的元件或具有相同或类似功能的元件。
另外，下面结合附图描述的本申请的实施方式是示例性的，仅用于解释本申请的实施方式，而不能理解为对本申请的限制。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征“上”或“下”可以是第一和第二特征直接接触，或第一和第二特征通过中间媒介间接接触。而且，第一特征在第二特征“之上”、“上方”和“上面”可是第一特征在第二特征正上方或斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”可以是第一特征在第二特征正下方或斜下方，或仅仅表示第一特征水平高度小于第二特征。
本申请实施方式的变焦镜头包括壳体、设置在壳体内的第一透镜组件、第二透镜组件和第三透镜组件、及第一驱动芯片。第一透镜组件、第二透镜组件和第三透镜组件沿第一透镜组件的光轴依次设置；第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，第一控制端和第二控制端分别用于控制第二透镜组件和第三透镜组件沿光轴相对第一透镜组件移动，以实现变焦镜头的变焦；第三控制端用于在第一目标焦距下，控制第三透镜组件沿光轴相对第一透镜组件移动以实现变焦镜头的对焦；第四控制端用于在第二目标焦距下，控制第三透镜组件沿光轴相对第一透镜组件移动以实现变焦镜头的对焦，第一目标焦距和第二目标焦距不相同。
在某些实施方式中，壳体包括基板，基板包括承载面，变焦镜头还包括第二驱动芯片和棱镜组件，棱镜组件、第一透镜组件、第二透镜组件和第三透镜组件沿光轴依次设置在承载面上，第二驱动芯片用于控制棱镜组件在第一方向和第二方向的移动以实现光学防抖，光轴、第一方向和第二方向两两垂直。
在某些实施方式中，第一方向平行于承载面且垂直光轴，第二方向垂直于承载面，承载面与光轴平行。
在某些实施方式中，第一驱动芯片和第二驱动芯片的有效控制位的数量均大于或等于10，以使得第二透镜组件和第三透镜组件的最小移动单位符合预定移动精度。
在某些实施方式中，变焦镜头还包括设置于壳体内的第四透镜组件，第二驱动芯片还包括第五控制端，第五控制端与第四透镜组件连接，以控制第四透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，变焦镜头包括防抖驱动件，第二驱动芯片包括第一防抖控制端和第二防抖控制端，第一防抖控制端和第二防抖控制端均与防抖驱动件连接，防抖驱动件与棱镜组件连接，第一防抖控制端用于控制防抖驱动件移动以带动棱镜组件在第一方向上的移动，第二防抖控制端用于控制防抖驱动件移动以带动棱镜组件在第二方向上的移动。
在某些实施方式中，棱镜组件包括棱镜，棱镜包括依次连接的入射面、反射面和出射面，第一透镜组件与入射面或出射面相对，反射面用于反射从入射面射入的光线以使得光线从出射面射出。
在某些实施方式中，变焦镜头还包括第一驱动件和第二驱动件，第一控制端通过第一驱动件与第二透镜组件连接，第一控制端用于控制第一驱动件移动以带动第二透镜组件沿光轴相对第一透镜组件移动；第二控制端、第三控制端和第四控制端均与第二驱动件连接，第二驱动件和第三透镜组件连接，第二控制端、第三控制端和第四控制端均用于控制第 二驱动件移动以带动第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，第一驱动件包括第一线圈和第一磁铁，第二驱动件包括第二线圈和第二磁铁，第一磁铁和第二透镜组件连接，第二磁铁和第三透镜组件连接，第一控制端与第一线圈连接，第一控制端用于控制输入第一线圈的电流，以驱动第一磁铁带动第二透镜组件沿光轴相对第一透镜组件移动，第二控制端、第三控制端和第四控制端均与第二线圈连接，第二控制端、第三控制端和第四控制端均用于控制输入第二线圈的电流，以驱动第二磁铁带动第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，壳体包括基板，基板的承载面设置有滑轨，第二透镜组件和第三透镜组件的与承载面相对的表面均设置有滚珠，第二透镜组件和第三透镜组件的滚珠与滑轨滑动连接，以使得第二透镜组件和第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，在第一目标焦距下，第三控制端还用于在变焦镜头拍摄的图像的清晰度达到预设清晰度时控制第三透镜组件停止移动，在第二目标焦距下，第四控制端还用于在变焦镜头拍摄的图像的清晰度达到预设清晰度时控制第三透镜组件停止移动，第一目标焦距为短焦状态，第二目标焦距为长焦状态。
本申请实施方式的相机模组包括感光元件和变焦镜头，感光元件设置在变焦镜头的像侧；变焦镜头包括壳体、设置在壳体内的第一透镜组件、第二透镜组件和第三透镜组件、及第一驱动芯片。第一透镜组件、第二透镜组件和第三透镜组件沿第一透镜组件的光轴依次设置；第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，第一控制端和第二控制端分别用于控制第二透镜组件和第三透镜组件沿光轴相对第一透镜组件移动，以实现变焦镜头的变焦；第三控制端用于在第一目标焦距下，控制第三透镜组件沿光轴相对第一透镜组件移动以实现变焦镜头的对焦；第四控制端用于在第二目标焦距下，控制第三透镜组件沿光轴相对第一透镜组件移动以实现变焦镜头的对焦，第一目标焦距和第二目标焦距不相同。
在某些实施方式中，壳体包括基板，基板包括承载面，变焦镜头还包括第二驱动芯片和棱镜组件，棱镜组件、第一透镜组件、第二透镜组件和第三透镜组件沿光轴依次设置在承载面上，第二驱动芯片用于控制棱镜组件在第一方向和第二方向的移动以实现光学防抖，光轴、第一方向和第二方向两两垂直。
在某些实施方式中，第一方向平行于承载面且垂直光轴，第二方向垂直于承载面，承载面与光轴平行。
在某些实施方式中，第一驱动芯片和第二驱动芯片的有效控制位的数量均大于或等于10，以使得第二透镜组件和第三透镜组件的最小移动单位符合预定移动精度。
在某些实施方式中，变焦镜头还包括设置于壳体内的第四透镜组件，第二驱动芯片还包括第五控制端，第五控制端与第四透镜组件连接，以控制第四透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，变焦镜头包括防抖驱动件，第二驱动芯片包括第一防抖控制端和第二防抖控制端，第一防抖控制端和第二防抖控制端均与防抖驱动件连接，防抖驱动件与棱镜组件连接，第一防抖控制端用于控制防抖驱动件移动以带动棱镜组件在第一方向上的移动，第二防抖控制端用于控制防抖驱动件移动以带动棱镜组件在第二方向上的移动。
在某些实施方式中，棱镜组件包括棱镜，棱镜包括依次连接的入射面、反射面和出射面，第一透镜组件与入射面或出射面相对，反射面用于反射从入射面射入的光线以使得光线从出射面射出。
在某些实施方式中，变焦镜头还包括第一驱动件和第二驱动件，第一控制端通过第一驱动件与第二透镜组件连接，第一控制端用于控制第一驱动件移动以带动第二透镜组件沿光轴相对第一透镜组件移动；第二控制端、第三控制端和第四控制端均与第二驱动件连接，第二驱动件和第三透镜组件连接，第二控制端、第三控制端和第四控制端均用于控制第二驱动件移动以带动第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，第一驱动件包括第一线圈和第一磁铁，第二驱动件包括第二线圈和第二磁铁，第一磁铁和第二透镜组件连接，第二磁铁和第三透镜组件连接，第一控制端与第一线圈连接，第一控制端用于控制输入第一线圈的电流，以驱动第一磁铁带动第二透镜组件沿光轴相对第一透镜组件移动，第二控制端、第三控制端和第四控制端均与第二线圈连接，第二控制端、第三控制端和第四控制端均用于控制输入第二线圈的电流，以驱动第二磁铁带动第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，壳体包括基板，基板的承载面设置有滑轨，第二透镜组件和第三透镜组件的与承载面相对的表面均设置有滚珠，第二透镜组件和第三透镜组件的滚珠与滑轨滑动连接，以使得第二透镜组件和第三透镜组件沿光轴相对第一透镜组件移动。
在某些实施方式中，在第一目标焦距下，第三控制端还用于在变焦镜头拍摄的图像的清晰度达到预设清晰度时控制第三透镜组件停止移动，在第二目标焦距下，第四控制端还用于在变焦镜头拍摄的图像的清晰度达到预设清晰度时控制第三透镜组件停止移动，第一目标焦距为短焦状态，第二目标焦距为长焦状态。
本申请实施方式的电子装置包括机壳和上述任一实施方式的相机模组。相机模组安装在所述机壳上。
请参阅图1及图2，电子装置1000包括机壳200和相机模组100。相机模组100与机壳200结合。具体地，电子装置1000可以是手机、平板电脑、显示器、笔记本电脑、柜员机、闸机、智能手表、头显设备、游戏机等。本申请实施方式以电子装置1000是手机为例进行说明，可以理解，电子装置1000的具体形式并不限于手机。
机壳200可用于安装相机模组100，或者说，机壳200可作为相机模组100的安装载体。电子装置1000包括正面901和背面902，相机模组100可设置在正面901作为前置摄像头，相机模组100还可设置在背面902作为后置摄像头，本申请实施方式中，相机模组100设置在背面902作为后置摄像头。机壳200还可用于安装电子装置1000的相机模组100、供电装置、通信装置等功能模块，以使机壳200为功能模块提供防尘、防摔、防水等保护。
请参阅图3至图5，相机模组100包括变焦镜头10和感光元件50，感光元件50安装在变焦镜头10的像侧。感光元件50可以采用互补金属氧化物半导体(Complementary Metal Oxide Semiconductor，CMOS)感光元件，或者电荷耦合元件(Charge-coupled Device，CCD)感光元件。
请参阅图3至图6，本申请实施方式的变焦镜头10包括壳体11、第一透镜组件12、第二透镜组件13、第三透镜组件14和第一驱动芯片161。第一透镜组件12、第二透镜组件13和第三透镜组件14设置在壳体11内，第一透镜组件12、第二透镜组件13和第三透镜组件14沿第一透镜组件12的光轴O依次设置，第一透镜组件12的光轴O、第二透镜组件13的光轴和第三透镜组件14的光轴重合。第一驱动芯片161包括第一控制端1611、第二控制端1612、第三控制端1613和第四控制端1614，第一控制端1611和第二控制端1612分别用于控制第二透镜组件13和第三透镜组件14沿光轴O相对第一透镜组件12移动，以实现变焦镜头10的变焦；第三控制端1613用于在第一目标焦距下，控制第三透镜组件14沿光轴O相对第一透镜组件12移动以实现变焦镜头10的对焦；第四控制端1614用于在第二目标焦距下，控制第三透镜组件14沿光轴O相对第一透镜组件12移动以实现变焦镜头10的对焦，第一目标焦距和第二目标焦距不相同，第一目标焦距大于第二目标焦距，或者，第一目标焦距小于第二目标焦距，本申请实施方式中，第一目标焦距小于第二目标焦距。
在变焦镜头中，变焦过程中透镜组的移动行程范围较大，且变焦后进行对焦时的精度要求较高，在驱动芯片的有效控制位较少的情况下，很难实现变焦的同时保证变焦镜头对焦的移动精度。
本申请实施方式的变焦镜头10中，第一驱动芯片161通过第一控制端1611和第二控制端1612分别控制第二透镜组件13和第三透镜组件14沿光轴O相对第一透镜组件12移动，实现变焦透镜10的变焦；在变焦镜头10处于不同的焦距状态时(如在第一目标焦距或第二目标焦距时)，分别使用第三控制端1613和第四控制端1614控制第三透镜组件14移动，来实现变焦镜头10的对焦，第三控制端1613和第四控制端1614进行对焦时只需在对应的当前焦距状态下控制第三透镜组14件进行较小行程范围的移动即可，第一驱动芯片161的有效控制位较少也能够高精度控制透镜组件(如第二透镜组件13和第三透镜组件14)的移动。变焦过程中，移动行程范围比较大，但精度要求较低，对焦过程中，移动行程范围较小，但精度要求较高，因此，变焦镜头10通过合理的分配驱动芯片的多个控制端分别实现变焦和对焦，在驱动芯片有效控制位较少的情况下，保证了对焦的移动精度。
如图3所示，为方便后续描述，平行于光轴O的方向被定义为x方向，垂直x方向的两个方向分别定义为y方向和z方向，即，x方向、y方向和z方向两两互相垂直。
请参阅图3、图4、图7a和图7b，变焦镜头10包括壳体11、棱镜组件15、第一透镜组件12、第二透镜组件13、第三透镜组件14和驱动组件16。棱镜组件15、第一透镜组件12、第二透镜组件13、第三透镜组件14依次设置在壳体11内。第二透镜组件13与第三透镜组件14均可在驱动组件16的控制下沿光轴O相对第一透镜组件12移动。
壳体11包括基板111、侧板112、和盖板113。基板111、侧板112和盖板113围成收容空间114，棱镜组件15、第一透镜组件12、第二透镜组件13、和第三透镜组件14均设置在收容空间114内。
基板111包括承载面1111。承载面1111平行于光轴O。承载面1111用于承载侧板112、棱镜组件15、第一透镜组件12、第二透镜组件13和第三透镜组件14。基板111可以是长方体结构、正方体结构、圆柱体结构、或其他形状的结构等，在此不作限制。本实施方式中，基板111为长方体结构。
承载面1111上开设有滑轨1112。滑轨1112的延伸方向与x方向平行。滑轨1112的数量为一个或多个，例如，滑轨1112的数量为一个、两个、三个、四个、甚至更多个。本实施方式中，滑轨1112的数量为两个(两个滑轨1112分别以第一滑轨1113和第二滑轨1114表示)。第一滑轨1113和第二滑轨1114的延伸方向与x方向平行，第二滑轨1114和第一滑轨1113沿y方向依次设置。在x方向上，第一滑轨1113靠近棱镜组件15的一端与棱镜组件15之间的第一距离，和第二滑轨1114靠近棱镜组件15的一端与棱镜组件15之间的第二距离可相同，也可不相同。第一滑轨1113远离棱镜组件15的一端与棱镜组件15之间的第三距离，和第二滑轨1114远离棱镜组件15的一端与棱镜组件15之间的第 四距离可相同，也可不相同。例如，第一距离与第二距离不同可以是：第一距离大于第二距离。或者，第一距离小于第二距离。第三距离与第四距离不同可以是：第三距离大于第四距离。或者，第三距离小于第四距离。本实施方式中，第一距离大于第二距离，第三距离大于第四距离。如此，通过第一滑轨1113和第二滑轨1114对第二透镜组件13和第三透镜组件14的移动进行限制。
侧板112自基板111的边缘环绕设置。侧板112垂直于基板111的承载面1111。侧板112可以通过胶合、螺合、卡合等方式设置在基板111上。侧板112还可以和基板111一体成型。
侧板112包括与x方向平行的第一侧板1121和第二侧板1122，第一侧板1121和第二侧板1122相对。
请参阅图3和图4，盖板113设置在侧板112上，具体地，盖板113可通过卡合、螺合、胶合等方式安装在侧板112的上表面1123。
盖板113与侧板112相背的表面开设有入光口1131，入光口1131的深度方向可以与x方向垂直，以使相机模组100整体呈潜望式的结构。在其他实施方式中，入光口1131并非为通孔，而是一个透光实体结构，光线可从该透光实体结构入射进收容空间114内并进入棱镜组件15。
请参阅图7a和图7b，棱镜组件15设置在基板111的承载面1111上并位于收容空间114内，棱镜组件15包括安装台151和棱镜152。
安装台151设置在基板111的承载面1111上，具体地，安装台151可通过胶合、螺合、卡合等方式安装在承载面1111上，安装台151还可与基板111一体成型。安装台151设有进光通孔153、出光通孔154和容置腔155。进光通孔153和出光通孔154将容置腔155与收容空间114连通。进光通孔153和入光口1131相对，出光通孔154与第一透镜组件12相对。
棱镜152设置在容置腔155内，棱镜152可通过胶合、卡合等方式安装在安装台151上。棱镜152包括入射面156、反射面157和出射面158，反射面157倾斜连接入射面156和出射面158，反射面157与承载面1111的夹角可以是15度、30度、45度、60度、75度等等，本实施方式中，反射面157与承载面1111的夹角为45度。入射面156与进光通孔153相对，出射面158与出光通孔154相对。反射面157用于反射从入射面156射入的光线以使得光线从出射面158射出。棱镜152用于改变从进光通孔153进入的光线的出射方向。棱镜152可以是三角棱镜152，具体地，棱镜152的截面为直角三角形，直角三角形的两条直角边分别由入射面156和出射面158形成，直角三角形的斜边由反射面157形成。
请参阅图4、图7a和图7b，第一透镜组件12包括第一外壳121和第一透镜组122。第一透镜组122设置在第一外壳121内。
第一外壳121设置在收容空间114内，具体地，第一外壳121可通过胶合、螺合、卡合等方式安装在承载面1111上，第一外壳121还可与基板111一体成型。第一外壳121包括进光孔123、出光孔124和收容腔125。进光孔123和出光孔124将收容腔125与收容空间114连通。进光孔123和棱镜组件15的出光通孔154相对，出光孔124与第二透镜组件13相对。
第一透镜组122位于收容腔125内，第一透镜组122可通过胶合、螺合、卡合等方式安装在第一外壳121内。第一透镜组122和棱镜152的出射面158相对。第一透镜组122可具有正光焦度或负光焦度，本实施方式中，第一透镜组122具有负光焦度。
第一透镜组122包括一个或多个第一透镜1221。例如，第一透镜组122可以仅包括一枚第一透镜1221，第一透镜1221为凸透镜或凹透镜；或者第一透镜组122包括多枚第一透镜1221(如两枚、三枚等)，多枚第一透镜1221可均为凸透镜或凹透镜，或部分为凸透镜，部分为凹透镜。本实施方式中，第一透镜组122包括两枚第一透镜1221。第一透镜1221可以是玻璃透镜或塑料透镜。
一个或多个第一透镜1221可以均为回转体的一部分，或者，部分为回转体，部分为回转体的一部分。本实施方式中，每个第一透镜1221均为回转体的一部分。例如，如图8所示，第一透镜1221首先通过模具形成回转体透镜S1，回转体透镜S1被垂直于光轴O的面截得的形状为圆形，该圆形的直径为R，然后对回转体透镜S1的边缘进行切割，以形成第一透镜1221。第一透镜1221被垂直于光轴O的面截得的形状为矩形，矩形的两条边长分别为T1和T2，T1/R∈[0.5，1)，T2/R∈[0.5，1)。例如，T1/R可以是0.5、0.6、0.7、0.75、0.8、0.95等等，T2/R可以是0.55、0.65、0.7、0.75、0.85、0.9等等。可以理解，T1/R和T2/R的具体比例根据电子装置1000的内部空间的大小、变焦镜头10的光学参数(如第一透镜1221有效光学区域大小)等因素确定。或者，第一透镜组122中的透镜均使用特制的模具直接制作，模具的模腔即为已经确定好T1/R和T2/R的具体比例的回转体的一部分，从而直接制成第一透镜1221。如此，第一透镜1221为回转体透镜S1的一部分，相较于完整的回转体透镜S1而言，体积较小，从而使得变焦镜头10的整体体积减 小，有利于电子装置1000的小型化。
请参阅图4、图7a和图7b，第二透镜组件13包括第二外壳131、第二透镜组132和第一滚珠133。第二透镜组132安装在第二外壳131内。在第二外壳131滑动时，第二外壳131带动第二透镜组132滑动。
第二外壳131开设有与第二透镜组132对应的第一进光口135和第一出光口136。第二外壳131形成有第一容置空间137以收容第二透镜组132，第一容置空间137通过第一进光口135和第一出光口136与收容空间114连通。第一进光口135和第一透镜组件12的出光孔124相对，第一出光口136和第三透镜组件14相对。
第二外壳131还包括相背的第一顶面138和第一底面139(即，第二外壳131的与承载面1111相对的表面)。第一顶面138与盖板113相对。第一底面139与基板111的承载面1111相对。第一底面139开设有第一凹槽1391，第一滚珠133设置在第一凹槽1391内并与滑轨1112的底部抵触，第一滚珠133和滑轨1112滑动连接。
具体地，第一凹槽1391与第一滚珠133的形状相匹配，例如，第一滚珠133为球形，移动阻力较小，第一凹槽1391为半圆形凹槽，第一滚珠133的直径和第一凹槽1391的直径相等，也即是说，第一滚珠133的一半位于第一凹槽1391内。第一滚珠133和第一凹槽1391的结合较为紧密，在第一滚珠133移动时，可带动第二透镜组件13的第二外壳131移动。滑轨1112可以是承载面1111上形成的延伸方向与x方向平行的凹槽，滑轨1112也可以是设置在承载面1111上的延伸方向与x方向平行的凸块，凸块的与第二外壳131的底面相对的表面形成有与第一滚珠133配合的凹槽。本实施方式中，滑轨1112为承载面1111上形成的延伸方向与x方向平行的凹槽。在第二透镜组件13安装在收容空间114后，第一滚珠133的一部分位于滑轨1112内，并与滑轨1112的底部抵触。滑轨1112的内壁被垂直x方向的面截得的形状呈第一弧形，第一滚珠133的被垂直x方向的面截得的外轮廓呈第二弧形，且第一弧形的曲率和第二弧形的曲率相同。如此，在y方向上，第一滚珠133的外壁和滑轨1112的内壁结合较为紧密，第一滚珠133的外壁的相背两侧被滑轨1112的内壁的相背两侧抵触。
第一凹槽1391的数量为一个或多个。例如，第一凹槽1391的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第一凹槽1391的数量为三个。第一滚珠133的数量也可以是一个或多个。本实施方式中，第一滚珠133的数量与第一凹槽1391的数量相同，也为三个。三个第一凹槽1391间隔设置在第一底面139。
滑轨1112的数量可根据三个第一凹槽1391的位置确定，例如，三个第一凹槽1391的连线平行于光轴O，则只需要设置一个滑轨1112即可；再例如，三个第一凹槽1391分两组(下称第一组和第二组)，第一组包括一个第一凹槽1391，第二组包括两个第一凹槽1391，且第一组的第一凹槽1391不在第二组的两个第一凹槽1391的连线上(即，三个第一凹槽1391可围成三角形)，则需要两个滑轨1112与第一组和第二组分别对应。本实施方式中，三个第一凹槽1391分第一组和第二组，第一组包括一个第一凹槽1391，第二组包括两个第一凹槽1391，第一组和第一滑轨1113对应，第二组和第二滑轨1114对应。如此，第一组对应的第一滚珠133在第一滑轨1113内滑动，第二组对应的第一滚珠133在第二滑轨1113内滑动，第一组对应的第一滚珠133和第二组对应的第一滚珠133分别被限制在第一滑轨1113和第二滑轨1114内，三个第一滚珠133围成三角形(位于第一滑轨1113内的第一滚珠133的中心为三角形的顶点)，在保证滑动稳定性的前提下，尽量减少第一滚珠133的数量，可减小滑动阻力。且由于在y方向上，第一组对应的第一滚珠133的外壁的相背两侧被第一滑轨1113的内壁的相背两侧抵触，第二组对应的第一滚珠133的外壁的相背两侧被第二滑轨1114的内壁的相背两侧抵触，三个第一滚珠133围成三角形，可防止第二透镜组件13在y方向上发生晃动或倾斜，从而保证相机模组100的成像质量不受影响。另外，由于第一距离大于第二距离，在第二透镜组件13沿x方向滑动时(即，滑向第一透镜组件12时)，第一组对应的第一滚珠133被第一滑轨1114靠近棱镜组件15的一端抵触，以限制第二透镜组件13继续滑向第一透镜组件12，从而起到限制第二透镜组件13的移动行程的作用。
第二透镜组132设置在第一容置空间137内。具体地，第二透镜组132可通过胶合、螺合、卡合等方式安装在第一容置空间137内。第二透镜组132可具有正光焦度或负光焦度，本实施方式中，第二透镜组132具有正光焦度。
第二透镜组132包括一个或多个第二透镜1321。第二透镜组132可以仅包含一枚第二透镜1321，第二透镜1321为凸透镜或凹透镜；或者第二透镜组132包括多枚第二透镜1321(如两枚、三枚等)，多枚第二透镜1321可均为凸透镜或凹透镜，或部分为凸透镜，部分为凹透镜。本实施方式中，第二透镜组132包括三枚第二透镜1321。第二透镜1321可以是玻璃透镜或塑料透镜。
请参阅图8，一个或多个第二透镜1321可以均为回转体的一部分，或者，部分为回转体，部分为回转体的一部分。本实施方式中，每个第二透镜1321均为回转体的一部分。例如，第二透镜1321首先通过模具形成回转体透镜S1，回转体透镜S1被垂直于光轴O的面截得的形状为圆形，该圆形的直径为R，然后对回转体透镜S1的边缘进行切割，以形成第二透镜1321。第二透镜1321被垂直于光轴O的面截得的形状为矩形，矩形的两条边长分别为T1和T2，T1/R∈[0.5，1)，T2/R∈[0.5，1)。例如，T1/R可以是0.5、0.6、0.7、0.75、0.8、0.95等等，T2/R可以是0.55、0.65、0.7、 0.75、0.85、0.9等等。可以理解，T1/R和T2/R的具体比例根据电子装置1000的内部空间的大小、变焦镜头10的光学参数(如第二透镜1321有效光学区域大小)等因素确定；或者，第二透镜1321均使用特制的模具直接制作，模具的模腔即为已经确定好T1/R和T2/R的具体比例的回转体的一部分，从而直接制成第二透镜1321。如此，第二透镜1321为回转体透镜S1的一部分，相较于完整的回转体透镜S1而言，体积较小，从而使得变焦镜头10的整体体积减小，有利于电子装置1000的小型化。需要注意的是：图8仅用于示意第一透镜1221和第二透镜1321，并不用于表示第二透镜1321的尺寸，更不应理解为第二透镜1321的尺寸和第一透镜1221的尺寸相同。
请参阅图4、图7a和图7b，第三透镜组件14包括第三外壳141、第三透镜组142和第三滚珠143。第三透镜组142安装在第三外壳141内。在第三外壳141滑动时，第三外壳141带动第三透镜组142滑动。
第三外壳141开设有与第三透镜组142对应的第二进光口145和第二出光口146。第三外壳141形成有第二容置空间147以收容第三透镜组142，第二容置空间147通过第二进光口145和第二出光口146与收容空间114连通。第二进光口145和第二透镜组件13的第一出光口136相对，第二出光口135和感光元件50相对(其中，感光元件50设置在侧板112的与第二出光口135相对的内侧面上)。
第三外壳141还包括相背的第二顶面148和第二底面149(第三外壳141的与承载面1111相对的表面)。第二顶面148与盖板113相对。第二底面149与基板111的承载面1111相对。第二底面149开设有第三凹槽1491，第三滚珠143设置在第三凹槽1491内并与滑轨1112的底部抵触，第三滚珠143和滑轨1112滑动连接。
具体地，第三凹槽1491与第三滚珠143的形状相匹配，例如，第三滚珠143为球形，移动阻力较小，第三凹槽1491为半圆形凹槽，第三滚珠143的直径和第三凹槽1491的直径相等，也即是说，第三滚珠143的一半位于第三凹槽1491内。第三滚珠143和第三凹槽1491的结合较为紧密，在第三滚珠143移动时，可带动第三透镜组件14的第三外壳141移动。在第三透镜组件14安装在收容空间114后，第三滚珠143的一部分位于滑轨1112内并与滑轨1112的底部抵触。滑轨1112的内壁被垂直x方向的面截得的形状呈第一弧形，第三滚珠143的被垂直x方向的面截得的外轮廓呈第二弧形，且第一弧形的曲率和第二弧形的曲率相同。如此，在y方向上，第三滚珠143的外壁和滑轨1112的内壁结合较为紧密，第三滚珠143的外壁的相背两侧被滑轨1112的内壁的相背两侧抵触。
第三凹槽1491的数量为一个或多个。例如，第三凹槽1491的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第三凹槽1491的数量为三个。第三滚珠143的数量也可以是一个或多个。本实施方式中，第三滚珠143的数量与第三凹槽1491的数量相同，也为三个。三个第三凹槽1491间隔设置在第二底面149。
本实施方式中，三个第三凹槽1491分第三组和第四组，第三组包括一个第三凹槽1491，第四组包括两个第三凹槽1491，第三组和第一滑轨1113对应，第四组和第二滑轨1114对应。如此，第三组的第三凹槽1491对应的第三滚珠143在第一滑轨1113内滑动，第四组的第三凹槽1491对应的第三滚珠143在第二滑轨1113内滑动，第三组对应的第三滚珠143和第四组对应的第三滚珠143分别被限制在第一滑轨1113和第二滑轨1114内，三个第三滚珠143围成三角形，在保证滑动稳定性的前提下，尽量减少第三滚珠143的数量，可减小滑动阻力。且由于在y方向上，第三组对应的第三滚珠143的外壁的相背两侧被第一滑轨1113的内壁的相背两侧抵触，第四组对应的第三滚珠143的外壁的相背两侧被第二滑轨1114的内壁的相背两侧抵触，三个第三滚珠143围成三角形，可防止第三透镜组件14在y方向上发生晃动或倾斜，从而保证相机模组100的成像质量不受影响。另外，在第三透镜组件14沿x方向的反方向滑动时(即，滑向感光元件50时)，第三组对应的第三滚珠143会先接触第一滑轨1113的靠近感光元件50的一端，从而限制第三透镜组件14继续沿x方向的反方向滑动，第一滑轨1113可起到限制第三透镜组件14的移动行程的作用。第三组对应的第三滚珠143被第一滑轨1114远离棱镜组件15的一端抵触，以限制第二透镜组件13继续滑向第一透镜组件12，从而起到限制第二透镜组件13的移动行程的作用。且相较于第一距离等于第二距离，第三距离等于第四距离而言，第一距离大于第二距离、及第三距离大于第四距离时，第一滑轨1113的长度较小。
第三透镜组142设置在第二容置空间147内。具体地，第三透镜组142可通过胶合、螺合、卡合等方式安装在第二容置空间147内。第三透镜组142可具有正光焦度或负光焦度，本实施方式中，第三透镜组142具有负光焦度。
第三透镜组142包括一个或多个第三透镜1421。第三透镜组142仅包含一枚第三透镜1421，第三透镜1421为凸透镜或凹透镜；或者第三透镜组142包括多枚第三透镜1421(如两枚、三枚等)，多枚第三透镜1421可均为凸透镜或凹透镜，或部分为凸透镜，部分为凹透镜。本实施方式中，第三透镜组142包括两枚第三透镜1421。第三透镜1421可以是玻璃透镜或塑料透镜。
请再次参阅图8，一个或多个第三透镜1421可以均为回转体的一部分，或者，部分为回转体，部分为回转体的一部分。本实施方式中，每个第三透镜1421均为回转体的一部分。例如，第三透镜1421首先通过模具形成回转体透镜S1，回转体透镜S1被垂直于光轴O的面截得的形状为圆形，该圆形的直径为R，然后对回转体透镜S1的边缘进行切 割，以形成第三透镜1421。第三透镜1421被垂直于光轴O的面截得的形状为矩形，矩形的两条边长分别为T1和T2，T1/R∈[0.5，1)，T2/R∈[0.5，1)。例如，T1/R可以是0.5、0.6、0.7、0.75、0.8、0.95等等，T2/R可以是0.55、0.65、0.7、0.75、0.85、0.9等等。可以是可以理解，T1/R和T2/R的具体比例根据电子装置1000的内部空间的大小、变焦镜头10的光学参数(如第三透镜1421有效光学区域大小)等因素确定；或者，第三透镜1421均使用特制的模具直接制作，模具的模腔即为已经确定好T1/R和T2/R的具体比例的回转体的一部分，从而直接制成第三透镜1421。如此，第二透镜1321为回转体透镜S1的一部分，相较于完整的回转体透镜S1而言，体积较小，从而使得变焦镜头10的整体体积减小，有利于电子装置1000的小型化。需要注意的是：图8仅用于示意第一透镜1221、第二透镜1321和第三透镜1421，并不用于表示第三透镜1421的尺寸，更不应理解为第三透镜1421的尺寸、第二透镜1321的尺寸和第一透镜1221的尺寸相同。
请参阅图4、图7a和图7b，驱动组件16包括第一驱动件162、第二驱动件163、防抖驱动件164、第一驱动芯片161和第二驱动芯片166。第一驱动芯片161和第一驱动件162及第二驱动件163连接，第二驱动芯片166和防抖驱动件164连接。
第一驱动件162包括第一线圈1621和第一磁铁1622。
第一线圈1621为一个或多个，例如，第一线圈1621的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第一线圈1621的数量为一个。第一线圈1621设置在第一侧板1121或第二侧板1122上，本实施方式中，第一线圈1621设置在第一侧板1121的内侧面上，第一线圈1621可通过胶合、螺合、卡合等方式安装在第一侧板1121上。在其他实施方式中，第一线圈1621为两个，两个第一线圈1621分别相对设置在第一侧板1121和第二侧板1122上。第一线圈1621可以设置在第一侧板1121的任意位置，例如，第一线圈1621可以设置在第一侧板1121的内侧面(即，位于收容空间114内的表面)，并位于第二透镜组132和第三透镜组142之间；或者，第一线圈1621可以设置在第一侧板1121的内侧面，并位于第一透镜组件12和第二透镜组件13之间等等，在此不再赘述。本实施方式中，第一线圈1621可以设置在第一侧板1121的内侧面，并位于第二透镜组132和第三透镜组142之间。在其他实施方式中，第一线圈1621可以设置第一外壳121上并与第一磁铁1622相对。
第一磁铁1622与第二透镜组132连接，具体地，第一磁铁1622设置在第二外壳131上，第一磁铁1622可设置在第二外壳131的任意位置上，例如，第一磁铁1622设置在第二外壳131的与第三外壳141相对的表面，或者，第一磁铁1622设置在第二外壳131的与第一透镜组件12相对的表面等等。本实施方式中，第一磁铁1622设置在第二外壳131的与第三外壳141相对的表面。第一磁铁1622可通过胶合、螺合、卡合等方式安装在第二外壳131上。第一磁铁1622可以是具有磁性的金属，例如，第一磁铁1622可以是铁、钴和镍中任意一种，或者，第一磁铁1622可以是由铁、钴和镍中至少两种组成的合金。
第二驱动件163包括第二线圈1631和第二磁铁1632。
第二线圈1631为一个或多个，例如，第二线圈1631的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第二线圈1631的数量为一个。第二线圈1631设置在第一侧板1121或第二侧板1122上，本实施方式中，第二线圈1631设置在第一侧板1121上，第二线圈1631可通过胶合、螺合、卡合等方式安装在第一侧板1121上。在其他实施方式中，第二线圈1631为两个，两个第二线圈1631分别相对设置在第一侧板1121和第二侧板1122上。第二线圈1631可以设置在侧板112的任意位置，例如，第二线圈1631可以设置在第一侧板1121的内侧面，并位于第二透镜组132和第三透镜组142之间；或者，第二线圈1631可以设置在第一侧板1121的内侧面，并位于第三透镜组142的与第二透镜组132相背的一侧；或者，第二线圈1631可以设置在侧板112的与第三透镜组142相对的内侧面(即，第二线圈1631位于第三透镜组142的与第二透镜组132相背的一侧并与第二磁铁1632相对)等等，在此不再赘述。本实施方式中，第二线圈1631设置在第一侧板1121的内侧面，并位于第三透镜组142的与第二透镜组132相背的一侧。
第二磁铁1632与第三透镜组142连接，具体地，第二磁铁1632设置在第三外壳上，第二磁铁1632可设置在第三外壳141的任意位置上，例如，第二磁铁1632设置在第三外壳141的与第二外壳131相对的表面，或者，第二磁铁1632设置在第三外壳141的与感光元件50相对的表面等等。本实施方式中，第二磁铁1632设置在第三外壳141的与感光元件50相对的表面，第二磁铁1632可通过胶合、螺合、卡合等方式安装在第二外壳131上。第二磁铁1632可以是具有磁性的金属，例如，第二磁铁1632可以是铁、钴和镍中任意一种，或者，第二磁铁1632可以是由铁、钴和镍中至少两种组成的合金。
在其他实施方式中，第一线圈1621设置在第二外壳131的任意位置上，例如，第一线圈1621设置在第二外壳131的与第三外壳141相对的表面，或者，第一线圈1621设置在第二外壳131的与第一透镜组件12相对的表面等等。第一磁铁1622设置在第一侧板1121或第二侧板1122上。例如，第一磁铁1622设置在第一侧板1121上，具体为，第一磁 铁1622设置在第一侧板1121的内侧面，并位于第二透镜组132和第三透镜组142之间。
第二线圈1631设置在第三外壳141的任意位置上，例如，第二线圈1631设置在第三外壳141的与第二外壳131相对的表面，或者，第二线圈1631设置在第三外壳141的与感光元件50相对的表面等等。第二磁铁1632设置在第一侧板1121或第二侧板1122上。例如，第二磁铁1632设置在第一侧板1121上，具体为，第二磁铁1632设置在第一侧板1121的内侧面，并位于第三透镜组142的与第二透镜组132相背的一侧。
请参阅图3、图4、图7a和图7b，在某些实施方式中，第一驱动件162和第二驱动件163还可以是线性电机，第一驱动件162的第一线性电机的定子可固定安装在侧板112的内侧面上，第一线性电机的动子自定子延伸并与第二外壳131连接，第二驱动件163的第二线性电机的定子也固定安装在侧板112的内侧面上，第二线性电机的动子自定子延伸并与第三外壳141连接，当第一线性电机的动子做直线伸缩运动时，从而带动第二外壳131能够沿光轴O直线移动，当第二线性电机的动子做直线伸缩运动时，从而带动第三外壳141能够沿光轴O直线移动。当然，第一驱动件162和第二驱动件163还可以是其他结构，例如液压结构、压电马达等，在此不再一一列举。
请参阅图3、图4、图7a和图7b，防抖驱动件164包括电机1641和连接架1642。连接架1642的一端连接电机1641，另一端与壳体11连接，连接架1642固定连接棱镜组件15的安装台151，安装台151和承载面1111抵触。
电机1641可以是步进电机。电机1641用于驱动连接架1642沿第一方向运动以带动棱镜组件15沿第一方向移动，电机还用于驱动连接架1642沿第二方向运动以带动棱镜组件15沿第二方向移动。
请结合图5和图6，第一驱动芯片161包括第一控制端1611、第二控制端1612、第三控制端1613和第四控制端1614。第一驱动芯片161与第一驱动件162和第二驱动件163均连接。第一控制端1611通过第一驱动件161与第二透镜组件连接，具体地，第一控制端1611与第一线圈1621连接，第二控制端1612、第三控制端1613均和第四控制端1614均与第二线圈1631连接。第一驱动芯片161设置在基板111上，例如基板111本身即为电路板，第一驱动芯片161为电路板的一部分。在壳体11内可进行布线，以实现第一驱动芯片161与第一线圈1621和第二线圈1631连接，第一驱动芯片161通过第一线圈1621和第一磁铁1622的磁性连接、第二线圈1631与第二磁铁1632的磁性连接以分别实现与第二透镜组件13和第三透镜组件14的连接。
第一驱动芯片161包括多个引脚。第一驱动芯片161的有效控制位大于或等于10，以使得第二透镜组件13和第三透镜组件14的最小移动单位符合预定移动精度，其中，最小移动单位为驱动芯片161可控制第二透镜组件13和/或第三透镜组件14每次移动的最小距离，预定移动精度对应的最小移动单位可以是0.5μm、1μm、2μm等，本申请实施方式中，预定移动精度对应的最小移动单位为0.5μm。例如，第一驱动芯片161的有效控制位可以是10、11、12、13、14、15、16等等。该有效控制位为第一驱动芯片161所有引脚中可用于控制透镜组件(如第二透镜组件13和/或第三透镜组件14)移动的引脚(下称第一控制引脚)的数量，例如第一驱动芯片161中可用于控制透镜组件移动的引脚数为10(即，第一控制引脚的数量为10)，则第一驱动芯片161的有效控制位为10。
第一驱动芯片161通过10个第一控制引脚控制第一控制端1611、第二控制端1612、第三控制端1613和第四控制端1614的信号输出。例如，第一驱动芯片161可向第一控制端1611、第二控制端1612、第三控制端1613和第四控制端1614输出电流信号、电压信号等，本申请实施方式中，第一驱动芯片161可向第一控制端1611、第二控制端1612、第三控制端1613和第四控制端1614输出电流信号。
第二驱动芯片166用于控制变焦镜头10在第一方向和第二方向的移动以实现光学防抖，第一方向和第二方向垂直。第一方向平行于承载面1111且垂直于光轴O(即，第一方向为平行变焦镜头10的y方向的方向)，第二方向垂直于承载面1111(即，第二方向为平行变焦镜头10的z方向的方向)，也即是说，光轴O、第一方向和第二方向两两垂直。如此，变焦镜头10通过控制棱镜组件15沿垂直于光路O的第一方向和第二方向移动，可以改变因用户抖动带来的光路的偏差，从而抵消用户的抖动对拍摄的影响，实现光学防抖。变焦镜头10通过第二驱动芯片166单独实现变焦镜头的光学防抖，由于光学防抖时变焦镜头10整体的移动行程范围也较小，第二驱动芯片166有效控制位即使较少也能够高精度控制变焦镜头的移动从而实现光学防抖。
第二驱动芯片166包括第一防抖控制端1661和第二防抖控制端1662。第一防抖控制端1661和第二防抖控制端166均与防抖驱动件164连接。第二驱动芯片166也可设置在基板111上，通过在侧板112、连接板1644及连接臂1643上进行布线以和电机1641连接；在其他实施方式中，第二驱动芯片166可直接设置在电机166上。
具体地，第一防抖控制端1661和第二防抖控制端166均与电机1641连接。第一防抖控制端1661通过控制电机1641工作以控制变焦镜头10在第一方向上的移动，第二防抖控制端1662通过控制电机1641工作以控制变焦镜头10在第二方向上的移动，以实现对变焦镜头10的抖动的补偿，实现光学防抖。
第二驱动芯片166包括多个引脚。第二驱动芯片166的有效控制位大于或等于10，例如，第二驱动芯片166的有 效控制位可以是10、11、12、13、14、15、16等等。该有效控制位为第二驱动芯片166所有引脚中可用于控制变焦镜头10整体移动的引脚(下称第二控制引脚)的数量，例如第二驱动芯片166中可用于控制变焦镜头10整体移动的引脚数为10(即，第二控制引脚的数量为10)，则第二驱动芯片166的有效控制位为10。
第二驱动芯片166通过10个第二控制引脚控制第一防抖控制端1661和第二防抖控制端1662的信号输出。例如，第二驱动芯片166可向第一防抖控制端1661和第二防抖控制端1662输出电流信号、电压信号等，本申请实施方式中，第二驱动芯片166可向第一防抖控制端1661和第二防抖控制端1662输出电流信号。
本申请实施方式中，在变焦过程中，变焦镜头10所需的精度较低，例如为2微米(μm)，第一控制端1611和第二控制端1612在每次输出不同的电流信号时，分别控制第二透镜组件13和第三透镜组件14最少移动2微米。第一驱动芯片161通过10个第一控制引脚可输出2^10个不同的电流信号，即，第一控制端1611和第二控制端1612均可输出2^10个不同的电流信号，则第二透镜组件13和第三透镜组件14在变焦时的最大的行程范围为2^10*2＝4096μm，也即是说，第二透镜组件13和第三透镜组件14的移动行程的起点和终点之间的距离最大可以是4096μm。
本申请实施方式中，在对焦和光学防抖过程中，变焦镜头10在对焦和光学防抖时的移动精度需小于或等于0.5微米才能保证变焦镜头10对焦和光学防抖的准确性，同时调节因变焦精度较低带来的误差，例如，变焦镜头10的对焦时的移动精度等于0.5μm，表示第三控制端1613和第四控制端1614每次输出不同的电流信号时，第三透镜组件14最少要移动0.5μm，第一防抖控制端1661和第二防抖控制端1162每次输出不同的电流信号时，变焦镜头10整体最少要移动0.5μm，第一驱动芯片161通过10个第一控制引脚可输出2^10个不同的电流信号，即，第三控制端1613和第四控制端1614可输出2^10个不同的电流信号，则第三透镜组件14在对焦时的最大的行程范围为2^10*0.5＝512μm，也即是说，第二透镜组件13和第三透镜组件14的移动行程的起点和终点之间的距离最大可以是512μm。第二驱动芯片166通过10个第二控制引脚也可输出2^10个不同的电流信号，即，第一防抖控制端1661和第二防抖控制端1662可输出2^10个不同的电流信号，则变焦镜头10整体的最大的行程范围为2^10*0.5＝512μm，也即是说，变焦镜头10整体在第一方向或第二方向的移动行程的起点和终点之间的距离最大可以是512μm。
请参阅图5、图7a和图7b，在用户使用电子装置1000拍照时，用户可手动选择长焦模式或短焦模式，长焦模式通常用于拍摄远处的物体，取景范围较小，短焦模式(俗称广角模式)通常用于拍摄近处的物体，取景范围较大。当用户选择好所需的拍摄模式时，手机的的处理器会发出控制指令，第一驱动芯片161在接收到控制指令后开始控制第二透镜组件13和第三透镜组件14沿光轴O相对第一透镜组件12移动，以实现变焦镜头10在第一目标焦距和第二目标焦距之间切换，第一目标焦距可以是短焦状态，第二目标焦距可以是长焦状态。
具体地，第一控制端1611输出电流信号以控制输入第一线圈1621内的电流，当第一线圈1621内通电时，第一线圈1621和第一磁铁1622之间均产生洛伦兹力，当洛伦兹力大于第二透镜组件13和滑轨之间的静摩擦力时，第一磁铁1622被洛伦兹力推动以带动第二透镜组件13沿着第一滑轨1113和第二滑轨1114移动，第一控制端1611可通过控制输入第一线圈1621内的电流的方向来控制洛伦兹力的方向，以使得第二透镜组件13沿x方向或与x方向相反的方向移动，随着第一驱动芯片161输出的电流信号的变化，输入第一线圈1621内的电流同时发生变化，第二透镜组件13可在固定的行程范围(下称第一行程范围，如第一行程范围为图9a和图9b中滑轨的AB段，为[0μm，4096μm])内移动，随着输入第一线圈1621内电流发生变化，第二透镜组件13的行程同样发生变化，其中，行程S(单位为μm)和电流I(单位为毫安(ma))的对应关系如图10所示，A位置对应的行程为0um，B位置的行程为4096um。可以理解，当手机使用状态不同时，移动第二透镜组件13所需的洛伦兹力也是不同的，对应所需的电流也是不同的，例如当手机处于竖直状态(即垂直于地面)时，此时若第二透镜组件13向靠近地面方向(即，x方向的反方向)移动时，洛伦兹力F1加上第二透镜组件13的重力大于第二透镜组件13和滑轨之间的静摩擦力即可带动第二透镜组件13移动，此时所需的洛伦兹力F1较小，如图10中曲线S1，第二透镜组件13的行程开始改变时对应的电流I1较小。而当第二透镜组件13向远离地面方向(即，x方向)移动时，洛伦兹力F2要大于第二透镜组件13的重力加上第二透镜组件13和滑轨之间的静摩擦力，才带动第二透镜组件13移动，此时所需的洛伦兹力F2较大，如图10中曲线S3，第二透镜组件13的行程开始改变时对应的电流I2较大。而在手机处于水平状态(即平行于地面)时，此时第二透镜组件13向x方向或x方向的反方向移动时，均只需洛伦兹力F3要大于第二透镜组件13和滑轨之间的静摩擦力即可，此时所需的洛伦兹力F3位于洛伦兹力F1和洛伦兹力F2之间，如图10中曲线S2，第二透镜组件13的行程开始改变时对应的电流I3位于电流I1和电流I2之间。如此，通过第一控制端1611控制输入第一线圈1621内的电流，即可控制第二透镜组件13的行程。
第二控制端1612输出电流信号以控制输入第二线圈1631内的电流，当第二线圈1631内通电时，第二线圈1631和第二磁铁之间均产生洛伦兹力，当洛伦兹力大于第三透镜组件14和滑轨之间的静摩擦力时，第二磁铁被洛伦兹力推动以带动第三透镜组件14沿着第一滑轨和第二滑轨移动，第二控制端1612可通过控制输入第二线圈1631内的电流的方 向来控制洛伦兹力的方向，以使得第二透镜组件13沿x方向或与x方向相反的方向移动，随着第一驱动芯片161输出的电流信号的变化，输入第二线圈1631内的电流同时发生变化，第三透镜组件14可在固定的行程范围(下称第二行程范围，如第二行程范围为图9a图X中滑轨的CD段，为[0μm，4096μm])内移动，随着输入第二线圈1631内电流发生变化，第三透镜组件14的行程同样发生变化，其中，行程和电流的对应关系如图10图X所示，C位置对应的行程为0um，D位置的行程为4096um。可以理解，当手机使用状态不同时，移动第三透镜组件13所需的洛伦兹力也是不同的，对应所需的电流也是不同的，由于移动第三透镜组件13所需的洛伦兹力及对应的电流的变化和移动第三透镜组件13所需的洛伦兹力及对应的电流的变化基本相同，具体解释请参阅前述描述，在此不再赘述。如此，通过第二控制端1612控制输入第二线圈1631内的电流，即可控制第三透镜组件14的行程。
长焦状态和短焦状态下，第二透镜组件13和第三透镜组件14分别对应的不同的行程。例如，在长焦状态下，第二透镜组件13和第三透镜组件14的行程分别为p0和m0；在短焦状态下，第二透镜组件13和第三透镜组件14的行程分别p1和行程m1，其中，p0、p1位于第一行程范围内，m0和m1位于第二行程范围内。根据手机当前所处的状态(如竖直状态或水平状态)及透镜组件(如第二透镜组件13和第三透镜组件14)移动的方向即可确定行程S和电流I的映射曲线，例如手机处于水平状态，可根据映射曲线S2，确定p0和p1分别对应的电流I4和I5，m0和m1分别对应的电流I6和I7，例如第二透镜组件13初始时位于A位置，第三透镜组件14初始时位于C位置，第一控制端1611口控制输入第一线圈1621的电流为I4，第二控制端1612控制输入第二线圈1631的电流为I6，即可将第二透镜组件13移动到p0位置处，将第三透镜组件14移动到m0位置处，从而使得变焦镜头10切换为长焦状态。同样的，第二透镜组件13初始时位于A位置，第三透镜组件14初始时位于C位置，第一控制端1611控制输入第一线圈1621的电流为I5，第二控制端1612控制输入第二线圈1631的电流为I7，即可将第二透镜组件13移动到p1位置处，将第三透镜组件14移动到m1位置处，从而使得变焦镜头10切换为短焦状态。
本申请实施方式中，变焦镜头10处于短焦状态时(如图7a所示的状态)第一透镜组122与第二透镜组132的第一轴上间距z11大于变焦镜头10处于长焦状态时(如图7b所示的状态)第一透镜组122与第二透镜组132的第一轴上间距z12，变焦镜头10处于短焦状态时第二透镜组132与第三透镜组142的第二轴上间距z21大于变焦镜头10处于长焦状态时的第二透镜组132与第三透镜组142的第二轴上间距z21。也即是说，在变焦镜头10从短焦状态变化到长焦状态时，第二透镜组132靠近第一透镜组122移动(第一轴上间距减小)，第三透镜组142靠近第二透镜组132移动，且第二轴上间距减小。在其他实施方式中，变焦镜头10处于短焦状态时的第一轴上间距z11小于变焦镜头10处于长焦状态时的的第一轴上间距z12，变焦镜头10处于短焦状态时的第二轴上间距z21小于变焦镜头10处于长焦状态时的第二轴上间距z22；或者，变焦镜头10处于短焦状态时的第一轴上间距z11小于变焦镜头10处于长焦状态时的第一轴上间距z12，变焦镜头10处于短焦状态时的第二轴上间距z21大于变焦镜头10处于长焦状态时的第二轴上间距z22等等，变焦镜头10从短焦状态切换为长焦状态时，第一轴上间距z1和第二轴上间距z2的变化趋势可根据第一透镜组122至第三透镜组142的参数(如面型参数、非球面系数参数等等)确定，在此不再一一列举。
可以理解，变焦镜头10根据第一轴上间距和第二轴上间距减小的幅度，焦距的变化幅度也不同，例如随着第一轴上间距和第二轴上间距均逐渐减小，变焦镜头10的焦距逐渐增大。再例如，随着第一轴上间距和第二轴上间距逐渐减小，变焦镜头10的焦距逐渐增大等。本实施方式中，随着第一轴上间距和第二轴上间距逐渐减小，变焦镜头10的焦距逐渐增大。如此，变焦镜头10可以控制焦距倍数逐渐变化，例如随着第一轴上间距和第二轴上间距逐渐减小，焦距从初始焦距的1倍逐渐变化为初始焦距(初始焦距为变焦镜头10处于短焦状态时的焦距)的10倍，从而使得变焦镜头10实现10倍光学变焦。
可以理解，在变焦过程中，第二透镜组件13和第三透镜组件14的移动行程范围较大，由于第一驱动芯片161的有效控制位的限制，变焦过程中第一控制端1611和第二控制端1612分别控制第二透镜组件13和第三透镜组件14的移动的精度会低于对焦所要求的精度，在变焦完成后，可进行高精度的对焦以保证变焦镜头10实现准确的焦距调节，从而提升成像品质。
当变焦镜头10完成变焦后，手机可通过相机模组100获取被摄物体的图像，同时实时判断图像的清晰度是否达到预设清晰度，图像的清晰度可通过计算图像的反差比获得。在成像时，光线依次经盖板113的入光口1131、棱镜组件15的进光通孔153后被棱镜152的反射面157反射后从出光通孔154射出，然后光线再依次经过第一透镜组件12的进光孔123、第一透镜组122、和出光孔124、第二透镜组件13的第一进光口135、第二透镜组132和第一出光口136、及第三透镜组件14的第二进光口145、第三透镜组142和第二出光口146，最终到达感光元件50上进行成像。
在图像的清晰度未达到预设清晰度时，说明此时的焦距并不能使得被摄物体清晰的成像，此时需要进行对焦，对焦的过程是对焦距进行轻微的调整，相较于变焦大幅度的调整焦距而言，对焦过程并不会改变变焦镜头10当前的状态(如 短焦状态或长焦状态)。
在实现对焦的过程中，例如变焦镜头10处于短焦状态(即，如图9a所示，第二透镜组件13位于p0位置处，第三透镜组件14位于m0位置处)，第三控制端1613控制输入第二线圈1631的电流，使得第三透镜组以P0为起始位置开始移动，每次均以最小移动精度进行移动(如0.5μm)，例如对焦的行程范围为[0μm，512μm](如图9a中的E位置和F位置分别对应0μm和512μm，m0位置对应该行程范围中的256μm)，第三控制端1613可控制第三透镜组件14沿着x方向移动，每进行一次移动(即，移动0.5μm)，即获取一次被摄物体的图像的清晰度并判断该清晰度是否达到预设清晰度，若直至移动到E位置时清晰度仍未达到预设清晰度，则控制第三透镜组件14快速移动到m0位置(如控制输入第二线圈1631的电流刚好可使得第三透镜组件14沿x方向的反方向移动256μm)，然后控制第三透镜组件14沿x方向的反方向向F位置继续移动，直至被摄物体的图像的清晰度达到预设清晰度才确定对焦完成，此时第三控制端1613控制第三透镜组件14停止移动。
在实现对焦的过程中，例如变焦镜头10处于长焦状态(即，如图9b所示，第二透镜组件13位于p1位置处，第三透镜组件14位于m1位置处)，第四控制端1614控制输入第二线圈1631的电流，使得第三透镜组以P1为起始位置开始移动，每次均以最小移动精度进行移动(如0.5μm)，例如对焦的行程范围为[0μm，512μm](如图9b中的G位置和H位置分别对应0μm和512μm，m1位置对应该行程范围中的256μm)，第四控制端1614可控制第三透镜组件14沿着x方向移动，每进行一次移动(即，移动0.5μm)，即获取一次被摄物体的图像的清晰度并判断该清晰度是否达到预设清晰度，若直至移动到G位置时清晰度仍未达到预设清晰度，则控制第三透镜组件14快速移动到m1位置(如控制输入第二线圈1631的电流刚好可使得第三透镜组件14沿x方向的反方向移动256μm)，然后控制第三透镜组件14沿x方向的反方向向H位置继续移动，直至被摄物体的图像的清晰度达到预设清晰度才确定对焦完成，此时第四控制端1614控制第三透镜组件14停止移动。如此，可准确地完成变焦镜头10在短焦状态和长焦状态下的对焦，且由于在短焦状态和长焦状态下的对焦时的移动形成范围均较小，因此第一驱动芯片161的有效控制位较少(如10位)也可以实现控制第三透镜组件14高精度的移动(每次最少可移动0.5μm)，从而保证对焦的准确性。
在用户使用手机进行拍摄的过程中，由于用户一般没有使用稳定器(如手持云台等)进行拍摄，由于用户手抖，可能导致变焦镜头10受到抖动的影响而使得拍摄的画面变糊，手机一般安装有陀螺仪，用于检测用户的抖动，在获取到到用户的抖动数据后，处理器可生成对应的移动控制指令并发送给第二驱动芯片166，第二驱动芯片166通过第四五控制端1661和第二防抖控制端1662分别控制电机1641驱动连接架1642沿第一方向运动以带动变焦镜头10沿第一方向移动及控制电机1641驱动连接架1642沿第二方向运动以带动变焦镜头10沿第二方向移动，从而抵消用户的抖动对拍摄的影响，实现光学防抖。
请参阅图5和图11，在某些实施方式中，变焦镜头10还包括设置在壳体11内的第四透镜组件17，第二驱动芯片166还包括第五控制端1663，第五控制端1663用于控制第四透镜组17件沿光轴O相对第一透镜组件12移动。
具体地，变焦镜头10为了实现更大范围的焦距的改变，例如实现50倍光学变焦，可设置可移动的第四透镜组件17，第一透镜组件12、第二透镜组件13、第三透镜组件14和第四透镜组件17沿着光轴O依次设置，并通过第五控制端1663控制第四透镜组件17沿x方向或x方向的反方向移动，以实现更大的焦距范围的改变。
请参阅图12，在某些实施方式中，盖板113还可包括盖板本体1132和凸台1133，凸台1133与盖板本体1132连接，第一透镜组件12设置在凸台1133内，第一透镜组件12的第一透镜组122与棱镜152的入射面156相对。
具体地，凸台1133开设有安装空间1135，安装空间1135与收容空间114连通，第一透镜组件12设置在安装空间1135内，第一透镜组件12形成有光轴O’，光轴O’和光轴O垂直。第一透镜组件12可通过胶合、螺合、卡合等方式安装在安装空间1135内，第一透镜组件12还可与凸台1133一体成型。凸台1133的与棱镜组件15相背的端面开设有入光口1131，入光口1131的深度方向可以与光轴O’平行，以使相机模组100整体呈潜望式的结构。入光口1131与第一外壳121的进光孔123，出光孔124与棱镜组件15的进光通孔153相对。如此，可减少变焦镜头10在某一方向(如x方向)上的长度。
请参阅图4、图7a和图7b，在某些实施方式中，第一顶面138开设有第二凹槽1381，第二透镜组件13还包括第二滚珠134，第二滚珠134设置在第二凹槽1381内并与盖板113抵触。
具体地，第二凹槽1381与第二滚珠134的形状相匹配，例如，第二滚珠134为球形，移动阻力较小，第二凹槽1381为半圆形凹槽，第二滚珠134的直径和第二凹槽1381的直径相等，也即是说，第二滚珠134的一半位于第二凹槽1381内。第二滚珠134和第二凹槽1381的结合较为紧密，在第二滚珠134移动时，可带动第二透镜组件13的第二外壳131移动。第二凹槽1381的数量为一个或多个。例如，第二凹槽1381的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第二凹槽1381的数量为三个。第二滚珠134的数量也可以是一个或多个。本实施方式中，第二滚珠134 的数量与第二凹槽1381的数量相同，也为三个。三个第二凹槽1381间隔设置在第二外壳131的第一顶面138。第二滚珠134设置在第二凹槽1381内并与盖板113抵触，使得第二透镜组件13被限制在盖板113和基板111之间，可防止第二透镜组件13发生z方向的晃动或倾斜，从而保证成像质量不受影响。
请参阅图4、图7a和图7b，在某些实施方式中，盖板113的与第一顶面138相对的表面形成有滑道1134，第二滚珠134设置在第二凹槽1381内并与滑道1134的底部抵触。
具体地，滑道1134可以是盖板113的与第一顶面138相对的表面上形成的延伸方向与x方向平行的凹槽，滑道1134也可以是设置在盖板113的与第一顶面138相对的表面上的延伸方向与x方向平行的凸块，凸块的与第二外壳131的第一顶面138相对的表面形成有与第二滚珠134配合的凹槽。本实施方式中，滑道1134为盖板113的与第一顶面138相对的表面上形成的延伸方向与x方向平行的凹槽。在第二透镜组件13安装在收容空间114后，第二滚珠134的一部分位于滑道1134内，并与滑道1134的底部抵触。滑道1134的内壁被垂直x方向的面截得的形状呈第三弧形，第二滚珠134被垂直x方向的面截得的外轮廓呈第四弧形，且第三弧形的曲率和第四弧形的曲率相同。如此，在y方向上，第二滚珠134的外壁和滑道1134的内壁结合较为紧密，第二滚珠134的外壁的相背两侧被滑道1134的内壁的相背两侧抵触。
滑道1134的数量可根据三个第二凹槽1381的位置确定，例如，三个第二凹槽1381的连线平行于光轴O，则只需要设置一个滑道1134即可；再例如，三个第二凹槽1381分两组(下称第五组和第六组)，第五组包括一个第二凹槽1381，第六组包括两个第二凹槽1381，且第五组的第二凹槽1381不在第六组的两个第二凹槽1381的连线上(即，三个第二凹槽1381可围成三角形)，则需要两个滑道1134与第五组和第六组分别对应。本实施方式中，三个第二凹槽1381分第五组和第六组，第五组包括一个第二凹槽1381，第六组包括两个第二凹槽1381，滑道1134的数量为两个(下称第一滑道1157和第二滑道1158)，第五组和第一滑道1157对应，第六组和第二滑道1158对应。如此，第五组对应的第二滚珠134在第一滑道1157内滑动，第六组对应的第二滚珠134在第二滑轨1113内滑动，第五组对应的第二滚珠134和第六组对应的第二滚珠134分别被限制在第一滑道1157和第二滑道1158内，三个第二滚珠134围成三角形，在保证滑动稳定性的前提下，尽量减少第二滚珠134的数量，可减小滑动阻力。且由于在y方向上，第五组对应的第二滚珠134的外壁的相背两侧被第一滑道1157的内壁的相背两侧抵触，第六组对应的第二滚珠134的外壁的相背两侧被第二滑道1158的内壁的相背两侧抵触，三个第二滚珠134围成三角形，可防止第二透镜组件13在y方向上发生晃动或倾斜，从而保证相机模组100的成像质量不受影响。
请参阅图4、图7a和图7b，在某些实施方式中，第二顶面148开设有第四凹槽1481，第三透镜组件14还包括第四滚珠144，第四滚珠144设置在第四凹槽1481内并与盖板113抵触。
具体地，第四凹槽1481与第四滚珠144的形状相匹配，例如，第四滚珠144为球形，移动阻力较小，第四凹槽1481为半圆形凹槽，第四滚珠144的直径和第四凹槽1481的直径相等，也即是说，第四滚珠144的一半位于第四凹槽1481内。第四滚珠144和第四凹槽1481的结合较为紧密，在第四滚珠144移动时，可带动第三透镜组件14的第三外壳141移动。第四凹槽1481的数量为一个或多个。例如，第四凹槽1481的数量为一个、两个、三个、四个、甚至更多个等，本实施方式中，第四凹槽1481的数量为三个。第四滚珠144的数量也可以是一个或多个。本实施方式中，第四滚珠144的数量与第四凹槽1481的数量相同，也为三个。三个第四凹槽1481间隔设置在第三外壳141的第二顶面148。第四滚珠144设置在第四凹槽1481内并与盖板113抵触，使得第三透镜组件14被限制在盖板113和基板111之间，可防止第三透镜组件14发生z方向的晃动或倾斜，从而保证成像质量不受影响。
请参阅图4、图7a和图7b，在某些实施方式中，盖板113的与第二顶面148相对的表面形成有滑道1134，第四滚珠144设置在第四凹槽1481内并与滑道1134的底部抵触。
在第三透镜组件14安装在收容空间114后，第四滚珠144的一部分位于滑道1134内并与滑道1134的底部抵触。滑道1134的内壁被垂直x方向的面截得的形状呈第三弧形，第四滚珠144被垂直x方向的面截得的外轮廓呈第四弧形，且第三弧形的曲率和第四弧形的曲率相同。在y方向上，第四滚珠144的外壁和滑道1134的内壁结合的较为紧密，第四滚珠144的外壁的相背两侧被滑道1134的内壁的相背两侧抵触。
本实施方式中，三个第四凹槽1481分第七组和第八组，第七组包括一个第四凹槽1481，第八组包括两个第四凹槽1481，第七组和第一滑道1157对应，第八组和第二滑道1158对应。如此，第七组对应的第四滚珠144在第一滑道1157内滑动，第八组对应的第四滚珠144在第二滑轨1113内滑动，第七组对应的第四滚珠144和第八组对应的第四滚珠144分别被限制在第一滑道1157和第二滑道1158内，三个第四滚珠144围成三角形，在保证滑动稳定性的前提下，尽量减少第四滚珠144的数量，可减小滑动阻力。且由于在y方向上，第七组对应的第四滚珠144的外壁的相背两侧被第一滑道1157的内壁的相背两侧抵触，第八组对应的第四滚珠144的外壁的相背两侧被第二滑道1158的内壁的相背两侧抵触，三个第四滚珠144围成三角形，可防止第二透镜组件13在y方向上发生晃动或倾斜，从而保证相机模组100的成像质 量不受影响。
在本说明书的描述中，参考术语“某些实施方式”、“一个实施方式”、“一些实施方式”、“示意性实施方式”、“示例”、“具体示例”、或“一些示例”的描述意指结合实施方式或示例描述的具体特征、结构、材料或者特点包含于本申请的至少一个实施方式或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施方式或示例。而且，描述的具体特征、结构、材料或者特点可以在任何的一个或多个实施方式或示例中以合适的方式结合。
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个，除非另有明确具体的限定。
尽管上面已经示出和描述了本申请的实施例，可以理解的是，上述实施例是示例性的，不能理解为对本申请的限制，本领域的普通技术人员在本申请的范围内可以对上述实施例进行变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (23)

  1. 一种变焦镜头，其特征在于，所述变焦镜头包括：
    壳体；
    设置在壳体内的第一透镜组件、第二透镜组件和第三透镜组件，所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述第一透镜组件的光轴依次设置；及
    第一驱动芯片，所述第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，所述第一控制端和所述第二控制端分别用于控制所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动，以实现所述变焦镜头的变焦；
    所述第三控制端用于在第一目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦；所述第四控制端用于在第二目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦，所述第一目标焦距和所述第二目标焦距不相同。
  2. 根据权利要求1所述的变焦镜头，其特征在于，所述壳体包括基板，所述基板包括承载面，所述变焦镜头还包括第二驱动芯片和棱镜组件，所述棱镜组件、所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述光轴依次设置在所述承载面上，所述第二驱动芯片用于控制所述棱镜组件在第一方向和第二方向的移动以实现光学防抖，所述光轴、所述第一方向和所述第二方向两两垂直。
  3. 根据权利要求2所述的变焦镜头，其特征在于，所述第一方向平行于所述承载面且垂直所述光轴，所述第二方向垂直于所述承载面，所述承载面与所述光轴平行。
  4. 根据权利要求2所述的变焦镜头，其特征在于，所述第一驱动芯片和所述第二驱动芯片的有效控制位的数量均大于或等于10，以使得所述第二透镜组件和所述第三透镜组件的最小移动单位符合预定移动精度。
  5. 根据权利要求2所述的变焦镜头，其特征在于，所述变焦镜头还包括设置于所述壳体内的第四透镜组件，所述第二驱动芯片还包括第五控制端，所述第五控制端与所述第四透镜组件连接，以控制所述第四透镜组件沿所述光轴相对所述第一透镜组件移动。
  6. 根据权利要求2所述的变焦镜头，其特征在于，所述变焦镜头包括防抖驱动件，所述第二驱动芯片包括第一防抖控制端和第二防抖控制端，所述第一防抖控制端和所述第二防抖控制端均与所述防抖驱动件连接，所述防抖驱动件与所述棱镜组件连接，所述第一防抖控制端用于控制所述防抖驱动件移动以带动所述棱镜组件在所述第一方向上的移动，所述第二防抖控制端用于控制所述防抖驱动件移动以带动所述棱镜组件在所述第二方向上的移动。
  7. 根据权利要求6所述的变焦镜头，其特征在于，所述棱镜组件包括棱镜，所述棱镜包括依次连接的入射面、反射面和出射面，所述第一透镜组件与所述入射面或所述出射面相对，所述反射面用于反射从所述入射面射入的光线以使得所述光线从所述出射面射出。
  8. 根据权利要求1所述的变焦镜头，其特征在于，所述变焦镜头还包括第一驱动件和第二驱动件，所述第一控制端通过所述第一驱动件与所述第二透镜组件连接，所述第一控制端用于控制所述第一驱动件移动以带动所述第二透镜组件沿所述光轴相对所述第一透镜组件移动；所述第二控制端、所述第三控制端和所述第四控制端均与所述第二驱动件连接，所述第二驱动件和所述第三透镜组件连接，所述第二控制端、所述第三控制端和所述第四控制端均用于控制所述第二驱动件移动以带动所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  9. 根据权利要求8所述的变焦镜头，其特征在于，所述第一驱动件包括第一线圈和第一磁铁，所述第二驱动件包括第二线圈和第二磁铁，所述第一磁铁和所述第二透镜组件连接，所述第二磁铁和所述第三透镜组件连接，所述第一控制端与所述第一线圈连接，所述第一控制端用于控制输入所述第一线圈的电流，以驱动所述第一磁铁带动所述第二透镜组件沿所述光轴相对所述第一透镜组件移动，所述第二控制端、所述第三控制端和所述第四控制端均与所述第二线圈连接，所述第二控制端、所述第三控制端和所述第四控制端均用于控制输入所述第二线圈的电流，以驱动所述第二磁铁带 动所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  10. 根据权利要求1所述的变焦镜头，其特征在于，所述壳体包括基板，所述基板的承载面设置有滑轨，所述第二透镜组件和所述第三透镜组件的与所述承载面相对的表面均设置有滚珠，所述第二透镜组件和所述第三透镜组件的滚珠与所述滑轨滑动连接，以使得所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  11. 根据权利要求1所述的变焦镜头，其特征在于，在所述第一目标焦距下，所述第三控制端还用于在所述变焦镜头拍摄的图像的清晰度达到预设清晰度时控制所述第三透镜组件停止移动，在所述第二目标焦距下，所述第四控制端还用于在所述变焦镜头拍摄的图像的清晰度达到所述预设清晰度时控制所述第三透镜组件停止移动，所述第一目标焦距为短焦状态，所述第二目标焦距为长焦状态。
  12. 一种相机模组，其特征在于，所述相机模组包括：感光元件；和
    变焦镜头，所述感光元件设置在所述变焦镜头的像侧；
    所述变焦镜头包括：
    壳体；
    设置在壳体内的第一透镜组件、第二透镜组件和第三透镜组件，所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述第一透镜组件的光轴依次设置；及
    第一驱动芯片，所述第一驱动芯片包括第一控制端、第二控制端、第三控制端和第四控制端，所述第一控制端和所述第二控制端分别用于控制所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动，以实现所述变焦镜头的变焦；
    所述第三控制端用于在第一目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦；所述第四控制端用于在第二目标焦距下，控制所述第三透镜组件沿所述光轴相对所述第一透镜组件移动以实现所述变焦镜头的对焦，所述第一目标焦距和所述第二目标焦距不相同。
  13. 根据权利要求12所述的相机模组，其特征在于，所述壳体包括基板，所述基板包括承载面，所述变焦镜头还包括第二驱动芯片和棱镜组件，所述棱镜组件、所述第一透镜组件、所述第二透镜组件和所述第三透镜组件沿所述光轴依次设置在所述承载面上，所述第二驱动芯片用于控制所述棱镜组件在第一方向和第二方向的移动以实现光学防抖，所述光轴、所述第一方向和所述第二方向两两垂直。
  14. 根据权利要求13所述的相机模组，其特征在于，所述第一方向平行于所述承载面且垂直所述光轴，所述第二方向垂直于所述承载面，所述承载面与所述光轴平行。
  15. 根据权利要求13所述的相机模组，其特征在于，所述第一驱动芯片和所述第二驱动芯片的有效控制位的数量均大于或等于10，以使得所述第二透镜组件和所述第三透镜组件的最小移动单位符合预定移动精度。
  16. 根据权利要求13所述的相机模组，其特征在于，所述变焦镜头还包括设置于所述壳体内的第四透镜组件，所述第二驱动芯片还包括第五控制端，所述第五控制端与所述第四透镜组件连接，以控制所述第四透镜组件沿所述光轴相对所述第一透镜组件移动。
  17. 根据权利要求13所述的相机模组，其特征在于，所述变焦镜头包括防抖驱动件，所述第二驱动芯片包括第一防抖控制端和第二防抖控制端，所述第一防抖控制端和所述第二防抖控制端均与所述防抖驱动件连接，所述防抖驱动件与所述棱镜组件连接，所述第一防抖控制端用于控制所述防抖驱动件移动以带动所述棱镜组件在所述第一方向上的移动，所述第二防抖控制端用于控制所述防抖驱动件移动以带动所述棱镜组件在所述第二方向上的移动。
  18. 根据权利要求17所述的相机模组，其特征在于，所述棱镜组件包括棱镜，所述棱镜包括依次连接的入射面、反射面和出射面，所述第一透镜组件与所述入射面或所述出射面相对，所述反射面用于反射从所述入射面射入的光线以使得所述光线从所述出射面射出。
  19. 根据权利要求13所述的相机模组，其特征在于，所述变焦镜头还包括第一驱动件和第二驱动件，所述第一控制端通过所述第一驱动件与所述第二透镜组件连接，所述第一控制端用于控制所述第一驱动件移动以带动所述第二透镜组件沿所述光轴相对所述第一透镜组件移动；所述第二控制端、所述第三控制端和所述第四控制端均与所述第二驱动件连接，所述第二驱动件和所述第三透镜组件连接，所述第二控制端、所述第三控制端和所述第四控制端均用于控制所述第二驱动件移动以带动所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  20. 根据权利要求19所述的相机模组，其特征在于，所述第一驱动件包括第一线圈和第一磁铁，所述第二驱动件包括第二线圈和第二磁铁，所述第一磁铁和所述第二透镜组件连接，所述第二磁铁和所述第三透镜组件连接，所述第一控制端与所述第一线圈连接，所述第一控制端用于控制输入所述第一线圈的电流，以驱动所述第一磁铁带动所述第二透镜组件沿所述光轴相对所述第一透镜组件移动，所述第二控制端、所述第三控制端和所述第四控制端均与所述第二线圈连接，所述第二控制端、所述第三控制端和所述第四控制端均用于控制输入所述第二线圈的电流，以驱动所述第二磁铁带动所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  21. 根据权利要求12所述的相机模组，其特征在于，所述壳体包括基板，所述基板的承载面设置有滑轨，所述第二透镜组件和所述第三透镜组件的与所述承载面相对的表面均设置有滚珠，所述第二透镜组件和所述第三透镜组件的滚珠与所述滑轨滑动连接，以使得所述第二透镜组件和所述第三透镜组件沿所述光轴相对所述第一透镜组件移动。
  22. 根据权利要求12所述的相机模组，其特征在于，在所述第一目标焦距下，所述第三控制端还用于在所述变焦镜头拍摄的图像的清晰度达到预设清晰度时控制所述第三透镜组件停止移动，在所述第二目标焦距下，所述第四控制端还用于在所述变焦镜头拍摄的图像的清晰度达到所述预设清晰度时控制所述第三透镜组件停止移动，所述第一目标焦距为短焦状态，所述第二目标焦距为长焦状态。
  23. 一种电子装置，其特征在于，所述电子装置包括：
    机壳；和
    权利要求12至22任一项所述的相机模组，所述相机模组安装在所述机壳上。
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