WO2020216153A1 - 自动聚焦驱动组件、镜头及电子设备 - Google Patents

自动聚焦驱动组件、镜头及电子设备 Download PDF

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Publication number
WO2020216153A1
WO2020216153A1 PCT/CN2020/085472 CN2020085472W WO2020216153A1 WO 2020216153 A1 WO2020216153 A1 WO 2020216153A1 CN 2020085472 W CN2020085472 W CN 2020085472W WO 2020216153 A1 WO2020216153 A1 WO 2020216153A1
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WO
WIPO (PCT)
Prior art keywords
lens
light
shading
shielding body
housing
Prior art date
Application number
PCT/CN2020/085472
Other languages
English (en)
French (fr)
Inventor
吴承勋
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to EP20795994.1A priority Critical patent/EP3936916A1/en
Priority to US17/606,270 priority patent/US20220317411A1/en
Priority to BR112021021010A priority patent/BR112021021010A2/pt
Publication of WO2020216153A1 publication Critical patent/WO2020216153A1/zh

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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
    • G02B7/08—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
    • G02B7/09—Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification adapted for automatic focusing or varying magnification
    • 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
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • 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
    • G03B11/00—Filters or other obturators specially adapted for photographic purposes
    • G03B11/04—Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
    • G03B11/045—Lens hoods or shields
    • 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
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • 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
    • 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
    • G02B13/0015—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045—Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses
    • 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
    • G02B13/007—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 the beam folding prism having at least one curved surface
    • 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
    • G02B5/00—Optical elements other than lenses
    • G02B5/003—Light absorbing elements
    • 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

Definitions

  • This application relates to the field of imaging, and more specifically, to autofocus drive components, lenses, and electronic equipment.
  • each lens In order to meet people's shooting needs, suppliers have designed and manufactured a variety of lenses. Since the design structure of each lens is different, the shooting scenes used by each lens are different. For example, short-focus lenses are often used for close-up shooting, and telephoto lenses are often used for long-range shooting. In order to make it easier for people to use the lens, suppliers tend to design a small-shaped lens, that is, reduce the size of the lens without affecting the effect of the lens. Therefore, for lenses with complex structures such as telephoto lenses, reducing the size of the lens often introduces new problems. For example, for a lens with a complex structure, it is more difficult to predict the optical path inside the lens. For another example, the higher the complexity of the lens, the higher the processing accuracy requirements for the internal parts of the lens. If the processing accuracy of the lens does not meet the requirements, it is easy to produce bad imaging effects such as halo and ghost on the captured image.
  • the present application provides an auto-focus driving component, a lens, and an electronic device to avoid bad imaging effects on captured images.
  • an auto-focus drive assembly is provided, the auto-focus drive assembly is applied to an electronic device including a lens and a sensor, and light incident to the lens passes through the auto-focus drive assembly and enters the sensor,
  • the auto-focus drive assembly includes: a drive motor for driving the lens to move; a housing for accommodating the drive motor; a first light shielding body provided on the inner wall of the housing for blocking light The light on the first shading body is reflected back into the cavity of the housing.
  • the color of the shading sheet is usually black, which can absorb light, that is, reduce the reflectivity of light.
  • the structure and shape of the light-shielding body can be used to scatter the light, that is, the light can deviate from the original propagation direction at the irradiation position with a large surface curvature and spread in a scattered manner, thereby reducing the reflectivity of the light.
  • the size of the light-shielding body has a greater influence on the scattering of light. For example, the thinner the thickness of the light-shielding sheet, the easier the light is scattered, and the lower the reflectivity of the light.
  • the light-shielding body is arranged on the inner wall of the housing.
  • the light-shielding body can play a role of extinction and prevent the light irradiated on the light-shielding body from being reflected back into the cavity of the housing.
  • the light-shielding sheet arranged on the inner wall of the housing can eliminate, for example, light-jet or cylindrical halos. Since the lens and the autofocus drive assembly are two parts that can be assembled, if the processing accuracy of the lens does not meet the requirements, or the design of the lens is unreasonable, it is easy to produce halos. Therefore, the light-shielding body provided in the auto-focus drive assembly can be used for remedy, avoiding the repair processing of the lens, and reserves a margin for the processing accuracy of the lens.
  • the position of the first light shielding body on the housing is outside the moving range of the lens relative to the housing.
  • the light-shielding body is arranged at a position where it will not touch the lens barrel, which can prevent movement interference and avoid component damage.
  • the first shading body is a shading ring
  • the inner wall of the housing is provided with internal threads
  • the outer circumference of the first shading body is provided with external threads
  • the first light shielding body is threadedly connected with the inner wall of the casing.
  • the light-shielding sheet is threadedly connected with the inner wall of the housing, so that the relative position of the light-shielding sheet on the inner wall of the housing can be adjusted during the process of assembling the light-shielding sheet.
  • the inner periphery of the first light shielding body is used to block the light irradiated on the first light shielding body from being reflected back into the cavity of the housing;
  • One or more chamfers are provided on the inner circumference of the first light shielding body.
  • the first light shielding body is disposed in a groove on the inner wall of the housing.
  • the present application provides a way to place the light shielding body, so that the light shielding body can be embedded in the inner wall of the auto focus driving assembly, so that the light shielding body can be installed stably.
  • the autofocus drive assembly further includes: one or more spacers, which are arranged in a groove on the inner wall of the housing and are connected to the The first light-shielding body contacts.
  • the relative position of the light shielding body on the inner wall of the housing can be adjusted.
  • the first shading body is a shading ring
  • the outer circumference of the first shading body is arranged in a groove on the inner wall of the housing, and the The inner circumference of the first shading body is used to block the light irradiated on the first shading body from being reflected back into the cavity of the housing; the inner circumference of the first shading body is provided with one or more chamfers.
  • the first shading body is a shading sheet, shading cloth, shading glue, shading ring, or an uneven surface structure that can be used for shading.
  • this kind of surface structure that can be used for shading is called a matte surface.
  • the color of the uneven surface structure may be black, so that the uneven surface structure can be used to absorb light.
  • the uneven surface structure due to the uneven surface structure, the light irradiated on the special surface structure is easily scattered, so it can further block the light from continuing to propagate in the cavity of the housing.
  • the lens includes a lens barrel and a lens arranged in the lens barrel; the lens further includes: a second light shielding body arranged in the lens barrel The inner wall of the lens or the groove of the lens is used to block the light irradiated on the second shading body from being reflected back into the cavity of the lens barrel.
  • the light-shielding sheet arranged on the lens or the light-shielding sheet arranged on the inner wall of the lens barrel and near the lens can eliminate, for example, circular or cylindrical halos.
  • the shading sheet arranged in the area far away from the lens and close to the auto focus drive assembly can eliminate, for example, spray-type or cylindrical halos.
  • the lens is a periscope lens or a telephoto lens.
  • a lens is provided, the lens is applied to an electronic device including an auto-focus driving component and a sensor, the light incident on the lens passes through the auto-focus driving component and enters the sensor, the lens It includes: a lens; a lens barrel for accommodating the lens; a second light-shielding body, which is arranged on the inner wall of the lens barrel, and the distance from the autofocus driving assembly is less than a threshold value, and is used to block the second light The light on the shading body is reflected back into the cavity of the lens barrel.
  • the color of the shading sheet is usually black, which can absorb light, that is, reduce the reflectivity of light.
  • the structure and shape of the light-shielding body can be used to scatter the light, that is, the light can deviate from the original propagation direction at the irradiation position with a large surface curvature and spread in a scattered manner, thereby reducing the reflectivity of the light.
  • the size of the light-shielding body has a greater influence on the scattering of light. For example, the thinner the thickness of the light-shielding sheet, the easier the light is scattered, and the lower the reflectivity of the light.
  • the light-shielding body is arranged in an area away from the lens and close to the auto-focus driving component. This area can also be regarded as an area where no lens is provided. When light is irradiated on the light-shielding body, it can play a role of extinction and avoid the light shining on the light-shielding body from continuing to propagate in the cavity of the lens barrel.
  • the shading sheet arranged in the area far away from the lens and close to the auto focus drive assembly can eliminate, for example, spray-type or cylindrical halos.
  • the second shading body is a shading ring
  • the inner wall of the lens barrel is provided with an internal thread
  • the outer circumference of the second shading body is provided with an external thread
  • the second light shielding body is threadedly connected with the inner wall of the lens barrel.
  • the light-shielding sheet is threadedly connected with the inner wall of the lens barrel, so that the relative position of the light-shielding sheet on the inner wall of the lens barrel can be adjusted during the process of assembling the light-shielding sheet.
  • the inner circumference of the second light shielding body is used to block the light irradiated on the second light shielding body from being reflected back into the cavity of the housing;
  • One or more chamfers are provided on the inner circumference of the second light shielding body.
  • the second light shielding body is disposed in a groove on the inner wall of the lens barrel.
  • the present application provides a way to place the light-shielding body, so that the light-shielding body can be embedded in the inner wall of the lens barrel, so that the light-shielding body can be installed stably.
  • the lens further includes: one or more spacers, which are arranged in a groove on the inner wall of the lens barrel, and are connected to the second light shield Body contact.
  • the relative position of the light shielding body on the inner wall of the housing can be adjusted.
  • the second shading body is a shading ring
  • the outer periphery of the second shading body is arranged in a groove on the inner wall of the lens barrel, and the The inner circumference of the second shading body is used to block the light irradiated on the second shading body from being reflected back into the cavity of the housing; the inner circumference of the second shading body is provided with one or more chamfers.
  • the second shading body is a shading sheet, shading cloth, shading glue, shading ring, or an uneven surface structure that can be used for shading.
  • this kind of surface structure that can be used for shading is called a matte surface.
  • the color of the uneven surface structure may be black, so that the uneven surface structure can be used to absorb light.
  • the uneven surface structure due to the uneven surface structure, the light irradiated on the special surface structure is easily scattered, so it can further block the light from continuing to propagate in the cavity of the lens barrel.
  • the autofocus drive assembly includes: a drive motor for driving the lens to move; a housing for accommodating the drive motor; and a first light-shielding body , Arranged on the inner wall of the housing to block the light irradiated on the first light shielding body from being reflected back into the cavity of the housing.
  • the light-shielding body is arranged on the inner wall of the housing.
  • the light-shielding body can play a role of extinction and prevent the light irradiated on the light-shielding body from being reflected back into the cavity of the housing.
  • the light-shielding sheet arranged on the inner wall of the housing can eliminate, for example, light-jet or cylindrical halos. Since the lens and the autofocus drive assembly are two parts that can be assembled, if the processing accuracy of the lens does not meet the requirements, or the design of the lens is unreasonable, it is easy to produce halos. Therefore, the light-shielding body provided in the auto-focus drive assembly can be used for remedy, avoiding the repair processing of the lens, and reserves a margin for the processing accuracy of the lens.
  • the lens is a periscope lens or a telephoto lens.
  • a lens module including a lens and an auto-focus driving component as in the first aspect and any one of the possible implementations of the first aspect.
  • a lens module which includes the lens and an auto-focus drive assembly as in the second aspect and any possible implementation of the second aspect.
  • a camera module including a lens, an image sensor, and an auto-focus drive component as in the first aspect and any possible implementation of the first aspect.
  • a camera module including a lens, an image sensor, and an autofocus driving component as in the second aspect and any possible implementation of the second aspect.
  • an electronic device including the autofocus driving component as in the first aspect and any one of the possible implementation manners of the first aspect.
  • an electronic device including the lens in the second aspect and any possible implementation manner of the second aspect.
  • an electronic device including the lens module according to the third or fourth aspect.
  • an electronic device including the camera module according to the fifth aspect or the sixth aspect.
  • Figure 1 is a schematic structural diagram of an electronic device.
  • Figure 2 is a schematic structural diagram of a camera module.
  • Fig. 3 is a schematic structural diagram of a telephoto lens.
  • Fig. 4 is a schematic structural diagram of a lens module according to an embodiment of the present application.
  • Fig. 5 is a schematic structural diagram of a light-shielding body according to an embodiment of the present application.
  • Fig. 6 is a schematic structural diagram of a light-shielding body according to an embodiment of the present application.
  • Fig. 7 is a schematic structural diagram of a light shielding body according to an embodiment of the present application.
  • Fig. 8 is a schematic structural diagram of a light-shielding body according to an embodiment of the present application.
  • Fig. 9 is a schematic structural diagram of a light shielding body according to an embodiment of the present application.
  • Fig. 10 is a schematic structural diagram of a light shielding body installed according to an embodiment of the present application.
  • Fig. 11 is a schematic structural diagram of a light shielding body installed according to an embodiment of the present application.
  • Fig. 12 is a schematic structural diagram of a light shielding body installed according to an embodiment of the present application.
  • Fig. 13 is a schematic structural diagram of a light-shielding body according to an embodiment of the present application.
  • Fig. 14 is a schematic structural diagram of a shading body according to an embodiment of the present application.
  • Fig. 15 is a schematic structural diagram of a light shielding body according to an embodiment of the present application.
  • Fig. 16 is a schematic structural diagram of a periscope camera module according to an embodiment of the present application.
  • focusing can be understood as realizing the change of the object distance and the image distance, achieving a conjugate relationship, making the image clear. This can be achieved by driving the lens group to move by the autofocus drive component in the mobile phone. In other words, during the auto-focusing process, the focal length of the imaging lens can be unchanged, and auto-focusing can be achieved only by changing the object distance and image distance.
  • Optical image stabilization technology is when the gyroscope in the camera module detects a small movement, it transmits the signal to the image chip to calculate the amount of displacement that needs to be compensated, and then pushes the lens group to compensate according to the calculated displacement. Overcome image blur caused by camera shake.
  • the angle formed by the two edges of the maximum range where the object image of the measured target can pass through the lens with the lens of the optical instrument as the vertex is called the field of view.
  • the size of the field of view determines the field of view of the optical instrument. The larger the field of view, the larger the field of view.
  • Figure 1 shows a schematic diagram of an electronic device. As shown in FIG. 1, the electronic device 100 is equipped with a camera module 110 and/or a camera module 120.
  • the electronic device 100 may be an electronic device with a camera or camera function, such as a mobile phone, a smart phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, or other devices with a camera or camera function.
  • a camera or camera function such as a mobile phone, a smart phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, or other devices with a camera or camera function.
  • a mobile phone such as a mobile phone, a smart phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, or other devices with a camera or camera function.
  • a camera or camera function such as a mobile phone, a smart phone, a tablet computer, a laptop computer, a video camera, a video recorder, a camera, or other devices with a camera or camera function.
  • the electronic device 100 includes a housing and a display screen assembly.
  • the housing includes a frame and a back cover, and the frame surrounds the edge of the back cover.
  • the display screen assembly is arranged on the side of the frame and away from the back cover.
  • the user faces the display screen assembly to observe the image displayed on the display screen assembly. Therefore, the user-facing surface of the display screen assembly may be the front of the electronic device 100; accordingly, the exposed surface of the back cover may be the surface of the electronic device 100. back.
  • Both the front and back of the electronic device 100 can be provided with a camera compact module (CCM); or, only the front of the electronic device 100 or the back of the electronic device 100 can be provided with a camera module.
  • CCM camera compact module
  • the left picture is the front of the mobile phone with a camera module 110 installed on its upper part
  • the right picture in Fig. 1 is the back of the mobile phone with a camera module 120 installed on its upper left.
  • the camera module can also be set in other positions.
  • the camera module can be built into the electronic device 100, and pop out from the electronic device 100 by means of the pop-up structure in the electronic device 100 when shooting is required.
  • the installation positions of the camera module 110 and the camera module 120 are only illustrative, and the installation position of the camera module is not limited in this application.
  • the number of camera module 110 and camera module 120 to be installed is not limited to one, and can also be two or more.
  • two camera modules 120 can be installed on the back of the electronic device 100.
  • the embodiment of the present application does not make any limitation on the number of camera modules installed.
  • the electronic device 100 may further include a processing module for converting the optical signal obtained by the camera module into a digital image.
  • the processing module may include an analog-to-digital converter, an image processor, such as a digital signal processing chip (digital signal processing, DSP).
  • the analog-to-digital converter can be used to convert analog image signals into digital image signals; the image processor can be used to process digital image information to form compressed image signals.
  • the electronic device 100 shown in FIG. 1 may also be provided with other components, such as earpieces, buttons, etc.
  • the embodiment of the present application only takes an electronic device with a camera module as an example, but the electronic device 100 is installed The components are not limited to this.
  • FIG. 2 shows a schematic diagram of the camera module 200.
  • the camera module 200 may be the camera module 110 or the camera module 120 shown in FIG. 1.
  • the camera module 200 may include a lens, an auto-focus driving component, and an image sensor (sensor) 242.
  • the camera module 200 can be fixed on the mounting seat 241 in the electronic device 100.
  • the lens can be a fixed focal length lens or a zoom lens.
  • the lens can also be a short focal lens, a telephoto lens, a periscope lens, etc.
  • the lens may include a lens barrel 220 and one or more lenses 210 provided in the lens barrel 220.
  • One end of the lens barrel 220 is assembled with the auto-focus driving assembly, and the other end of the lens barrel 220 is provided with a light entrance hole for controlling the angle of view of the lens.
  • the lens 210 may be a plastic lens or a glass lens.
  • the lens 210 may be a spherical lens or an aspherical lens.
  • the auto-focus driving assembly includes a housing 230, which can be assembled with the lens barrel 220 for auto-focusing or optical image stabilization of the lens.
  • the auto-focus driving assembly may further include, for example, a driving integrated circuit provided in the housing 230, which is not shown in FIG. 2.
  • the autofocus drive assembly can also be called a motor.
  • the method of using the auto-focus driving component to achieve auto-focus or optical image stabilization may be similar to the prior art. Here, in order to avoid redundant description, the description is omitted.
  • the image sensor 242 may be a semiconductor chip. There are hundreds of thousands to millions of photodiodes on the surface of the image sensor 242. The photodiodes generate electric charges when irradiated by light, thereby converting light signals into electrical signals.
  • the image sensor 242 may be, for example, a charge coupled device (CCD) or a complementary metal-oxide conductor device (CMOS). As shown in FIG. 2, the image sensor 242 is fixed on the mounting seat 241 of the camera module 200. The image sensor 242 may also be fixed on other components. This application does not limit the installation position of the image sensor 242.
  • the camera module 200 may also include components such as infrared filters, circuit boards (not shown in the figure), gyroscopes, and the like.
  • the infrared filter can eliminate unnecessary light projected on the image sensor 242, prevent the image sensor 242 from generating false colors or ripples, so as to improve its effective resolution and color reproduction.
  • the circuit board may be a flexible printed circuit (FPC) or a printed circuit board (PCB), which is used to transmit electrical signals.
  • the working principle of the camera module 200 may be that the light reflected by the subject passes through one or more lenses 210 in the lens, and the autofocus driving component is projected onto the surface of the image sensor 242.
  • the lens imaging principle can be used to drive the lens barrel 220 through an auto-focus driving component to move the lens 210 in the lens barrel 220 to a suitable position.
  • the light can be focused on the image sensor 242 to form a clear optical image.
  • the image sensor 242 can convert an optical image into an electrical signal, thereby obtaining an image signal.
  • FIG. 3 it is a schematic structural diagram of a lens group arranged in a telephoto lens 300.
  • the telephoto lens 300 includes lenses 311-317 and a filter 251. The light from the outside passes through the lenses 311-317 and the filter 251 in sequence and irradiates the sensor 242. The light will be refracted while passing through the lens 311-317 or the filter.
  • the field angle 361 of the telephoto lens 300 shown in FIG. 3 is the predicted field angle.
  • the telephoto lens 300 is a complex lens with many internal components, the error of predicting the propagation of the optical signal is relatively large.
  • FIG. 4 shows a schematic structural diagram of a lens module according to an embodiment of the present application.
  • the lens module 500 of the embodiment of the present application may be the camera module 110 or the camera module 120 shown in FIG. 1, or may be a part of the camera module 110 or the camera module 120.
  • the lens module 500 may be mounted on the mounting base 241 in the electronic device 100 as shown in FIG. 1, and the mounting base 241 is provided with an image sensor 242.
  • the lens, auto-focus driving component, and image sensor in the camera module form a whole through assembly, and the whole may be called a camera module.
  • the lens and the auto-focus drive assembly form a whole, which is called a lens module in the embodiment of the present application.
  • the lens and the autofocus drive assembly are assembled to form a whole, and the whole is detachably installed on the body of the digital camera, while the image sensor is installed in the body of the digital camera. Therefore, in order to make the description clearer, in the embodiments of the present application, the camera module may include an image sensor, and the lens module may not include an image sensor.
  • the assembly formed by the lens module and the image sensor may be a camera module. In other words, in some cases, the lens module can be regarded as a part of the camera module.
  • the lens module 500 is formed by assembling a lens and an auto-focus driving component.
  • the lens module 500 can be installed on the mounting base 241 in the mobile phone and assembled with the image sensor 242 in the mobile phone to form a camera module, as shown in FIG. 2.
  • the lens module 500 may be installed on a mounting base for installing the lens module.
  • the lens includes a lens barrel 520 and one or more lenses (the lens 510 shown in FIG. 4) arranged in the lens barrel 520.
  • the lens can be a fixed focal length lens or a zoom lens.
  • the lens can also be a short focal lens, a telephoto lens, a periscope lens, etc.
  • One end of the lens barrel 520 is assembled with the auto focus driving assembly.
  • the lens 510 may be a plastic lens or a glass lens.
  • the lens 510 may be a spherical lens or an aspheric lens.
  • the auto-focus drive assembly is used to auto-focus or optically stabilize the lens.
  • the autofocus driving assembly includes a housing 530.
  • the first part of the housing 530 can be assembled with the lens barrel 520.
  • the second part of the housing 530 can be mounted on the mounting seat 241 of the electronic device 100, and the second part is far away from the lens and close to Image sensor 242.
  • the auto-focus driving assembly may further include, for example, a driving integrated circuit provided in the housing 530, which is not shown in FIG. 4.
  • the autofocus drive assembly can also be called a motor.
  • the method for auto-focusing or optical image stabilization performed by the auto-focus driving assembly may be similar to the prior art. Here, in order to avoid redundant description, the description is omitted.
  • a light-shielding body is provided on the lens, the inner wall of the lens barrel and/or the inner wall of the housing of the auto-focus drive assembly (hereinafter referred to as the inner wall of the housing) to block the light irradiated on the light-shielding body from being reflected back to the housing 530 of the auto-focus drive assembly ⁇ In the cavity.
  • the number of light-shielding sheets can be one or more.
  • the color of the shading sheet is usually black, which can absorb light, that is, reduce the reflectivity of light.
  • the structure and shape of the light-shielding body can be used to scatter the light, that is, the light can deviate from the original propagation direction at the irradiation position with a large surface curvature and spread in a scattered manner, thereby reducing the reflectivity of the light.
  • the size of the light-shielding body has a greater influence on the light scattering. For example, the thinner the thickness H of the light-shielding sheet (as shown in Fig. 5), the easier the light is scattered, and the lower the light reflectivity.
  • the light shielding body 551 is provided on the lens 510.
  • the light-shielding body 551 is attached to the surface of the lens 510.
  • it can play a role of extinction, preventing the light irradiated on the light shielding body 551 from being reflected back to the lens barrel 520 and continuing to propagate in the cavity of the lens barrel 520.
  • the light shielding body 552 is provided on the inner wall of the lens barrel.
  • the shading body 552 is arranged around the lens 510, for example, the shading body 552 is arranged between two lenses.
  • the light-shielding body 552 is a light-shielding sticker (refer to FIG. 14) and can be pasted on the inner wall of the lens barrel.
  • the light shielding body 553 is provided on the inner wall of the lens barrel.
  • the light-shielding body 553 is arranged in an area away from the lens 510 and close to the auto focus driving assembly.
  • the distance between the light-shielding body 553 on the inner wall of the lens barrel and the autofocus driving assembly is smaller than the threshold.
  • the threshold can be set according to actual conditions.
  • This area can also be regarded as an area where no lens is provided.
  • a surface structure (refer to FIG. 15) that can absorb light is provided on the inner wall of the lens barrel near the auto-focus drive assembly.
  • the surface structure is the light shielding body 553; that is, the light shielding body 553 is integrated with the inner wall of the lens barrel.
  • the light shielding body 554 is provided on the inner wall of the housing.
  • a groove is dug on the inner wall of the housing, and a light-shielding body 554 that can be used for matting is placed in the groove.
  • a light-shielding body 554 that can be used for matting is placed in the groove.
  • the shading sheet 551 arranged on the lens 510 or the shading sheet 552 arranged on the inner wall of the lens barrel near the lens 510 can eliminate, for example, circular or cylindrical halos.
  • the light-shielding sheet 553 arranged in the area away from the lens 510 and close to the auto-focus driving assembly and the light-shielding sheet 554 arranged on the inner wall of the housing can eliminate, for example, light-jetting or cylindrical halos.
  • the lens and the autofocus drive assembly are two parts that can be assembled, if the processing accuracy of the lens does not meet the requirements, or the design of the lens is unreasonable, halos are likely to occur. Therefore, the light-shielding body provided in the auto-focus drive assembly can be used for remedy, avoiding the repair processing of the lens, and reserves a margin for the processing accuracy of the lens.
  • FIGS. 5-15 are schematic diagrams showing the structure of the light shielding body 550 provided by an embodiment of the application.
  • the light-shielding body 550 may be the light-shielding bodies 551-554 shown in FIG. 4. It can be understood that the embodiments shown in FIGS. 5-15 are only for helping those skilled in the art to better understand the technical solutions of the present application, and are not intended to limit the technical solutions of the present application. Benefiting from the guidance presented in the foregoing description and related drawings, those skilled in the art will think of many improvements and other embodiments of the present application. Therefore, it should be understood that the present application is not limited to the specific embodiments disclosed.
  • 5-15 show the cross-sectional shape of the shading body 550 arranged on the lens, the inner wall of the lens barrel or the inner wall of the housing.
  • the following takes the inner wall 610 of the housing as an example for description. It should be understood that the light shielding body 550 may also be installed at other positions than the inner wall 610 of the housing.
  • the shading body 550 shown in FIG. 5 is a kind of shading sheet. As shown in FIG. 5, a groove may be provided on the inner wall 610 of the housing for placing the light shielding sheet 550. It should be understood that the number of shading sheets 550 placed in the groove may be one or more, that is, one or more shading sheets may be placed in one groove. After the light irradiates the inner peripheral surface of the light shielding sheet 550, the light shielding sheet 550 can reduce the reflectivity of the light and block the light from continuing to propagate in the cavity of the housing 530.
  • the color of the light-shielding sheet is black, so that the light-shielding sheet can be used to absorb light; on the other hand, the structure of the light-shielding sheet can further block the light from continuing to propagate in the cavity of the housing 530. For example, when light irradiates the upper surface 621 of the light shielding sheet 550, the light is reflected and can continue to travel toward the lens 510, and even exit the lens barrel 520, so the light does not irradiate the image sensor 242.
  • the thickness H of the light-shielding sheet 550 may be 0.012 mm, 0.016 mm, 0.021 mm, 0.03 mm, etc., for example. The thinner the thickness H of the shading sheet 550, the better the shading effect.
  • the contour line of the side surface 623 actually processed may be a straight line (as shown in FIG. 5) or a curve (as shown in FIG. 6).
  • 7-14 takes the contour line of the side surface 623 of the light shielding sheet 550 as a straight line or a broken line composed of multiple straight lines for illustration. It should be understood that the contour line of the side surface 623 of the light shielding sheet 550 may also be a curve.
  • FIG. 7-9 shows a schematic diagram of local thinning of the shading sheet.
  • a part of the material of the upper surface 621 of the shading sheet 550 may be cut to reduce the thickness of the side surface 623 of the shading sheet 550 and form a chamfer, thereby improving the matting effect of the shading sheet.
  • a part of the material on the lower surface of the shading sheet 550 may be cut to reduce the thickness of the side surface 623 of the shading sheet 550 and form a chamfer, thereby improving the matting effect of the shading sheet.
  • a part of the upper surface 621 and the lower surface of the shading sheet 550 can be cut off to form two chamfers, or even a sharp corner, which greatly reduces the thickness of the side surface 623 of the shading sheet 550, significantly Improve the matting effect of the shading sheet 550.
  • how to set the light-shielding sheet can be determined by simulation or experiment, for example, determining the shape and size of the light-shielding body, and setting the position of the light-shielding body.
  • the light-shielding sheet shown in FIGS. 5 to 10 may be a polyhedron of any shape. The following takes a circular shading sheet as an example to explain how to set the shading sheet.
  • the light-shielding sheet shown in FIGS. 5 to 10 may also have shapes other than the circular ring, and the method of determining the size of the light-shielding sheet of other shapes is similar to the manner of determining the size of the circular-shaped light-shielding sheet, and will not be repeated here.
  • the light-shielding sheet 550 shown in FIGS. 5 to 10 may be a circular light-shielding sheet (also called a light-shielding ring), the inner diameter of which is related to the position to be extinct.
  • a circular light-shielding sheet also called a light-shielding ring
  • the inner diameter of the light-shielding sheet 550 can be determined according to the position where light extinction is required.
  • the position that needs to be extinct can be obtained by simulation or experiment.
  • FIGS. 10-13 show the cross-sectional shape of the shading sheet 550 arranged on the lens, the inner wall of the lens barrel or the inner wall of the housing.
  • the following description takes the inner wall 610 of the housing as an example. It should be understood that the light-shielding sheet may also be installed at other positions than the inner wall 610 of the housing.
  • a groove may be provided on the inner wall 610 of the housing for placing the light-shielding sheet 550 and a gasket 1310, and the gasket 1310 is in contact with the light-shielding sheet 550.
  • the relative position of the light shielding body on the inner wall 610 of the housing can be adjusted.
  • three spacers 1310 and a light-shielding sheet 550 are provided in the groove of the inner wall 610 of the housing, wherein two spacers 1310 are provided above the light-shielding sheet 550, and one is provided below the light-shielding sheet 550.
  • the spacer 1310 and the light-shielding sheet 550 are arranged in the groove shown in FIG. 10, so that the light-shielding sheet 550 can be arranged in 4 positions in the groove, and the spacer 1310 above the light-shielding sheet 550 is adjusted to shading Below the sheet 550, the relative position of the shading sheet 550 in the groove can be adjusted.
  • FIG. 12 shows a schematic diagram of the shading sheet 550 being screwed into the cavity of the housing 530.
  • the inner ring surface of the light shielding sheet 550 shown in FIG. 11 is a cylindrical surface.
  • the inner ring surface of the shading sheet 550 may also be other flat surfaces or curved surfaces.
  • the inner ring surface of the light-shielding sheet 550 shown in FIG. 13 may be a three-dimensional curved surface formed by superimposing two circular truncated sides. Compared with a cylindrical surface, the three-dimensional curved surface can further improve the matting effect of the light-shielding sheet 550.
  • the position of the shading sheet should avoid impacts of other components.
  • the shading sheet 550 on the inner wall of the housing should be far away from the lens and close to the image sensor 242; on the other hand, it can be placed on the lens, the inner wall of the lens barrel and /Or multiple positions on the inner wall of the housing are provided with shading sheets.
  • the shading body 550 shown in FIG. 14 is a shading sticker.
  • the shading sticker can be directly pasted on the inner wall 610 of the housing. Since the light-shielding sticker has a light-absorbing effect, sticking the light-shielding sticker on the inner wall 610 of the housing can prevent light from being reflected back into the cavity of the housing 530 and avoid halo.
  • the shading sticker can be a black material.
  • the surface of the shading sticker can be formed with a special matting surface structure, which can further enhance the matting effect.
  • FIG. 15 shows that the light-shielding body 550 attached to the inner wall 610 of the housing is a surface structure that can be used for light-shielding.
  • This surface structure can be integrated with the housing 530.
  • the surface structure can be a plating layer with a special surface.
  • the surface structure can be a special surface formed on the inner wall 610 of the housing by embossing. Surface topography. It should be understood that the surface structure can also be formed on the inner wall 610 of the housing in other ways, which is not limited in this application.
  • the surface structure that can be used for shading usually has the characteristics of unevenness. Sometimes this kind of surface structure that can be used for shading is called a matte surface. For example, fine particles are attached to a smooth surface to form an uneven or rough surface. For example, fine particles can be attached by magnetron sputtering, electroplating, etc. For another example, small pits are pressed on a smooth surface to form an uneven or rough surface.
  • the color of the special surface structure can be black, so that the special surface structure can be used to absorb light.
  • the light irradiated on the special surface structure is prone to scatter, so it can further block the light from continuing to propagate in the cavity of the housing 530.
  • the light shielding bodies shown in FIGS. 14 and 15 may be distributed on the entire inner wall 610 of the housing. How to set the light-shielding body, such as the arrangement position of the light-shielding body, can be determined by simulation or experiment.
  • the lens barrel in the moving state should not touch the light shielding body on the autofocus drive assembly.
  • the position of the light shielding body on the housing is outside the moving range of the lens relative to the housing.
  • FIG. 16 is a schematic structural diagram of a camera module according to an embodiment of the application.
  • the camera module 1700 in the embodiment of the present application may be the camera module 110 or the camera module 120 shown in FIG. 1.
  • the camera module 1700 may include a lens, an auto-focus driving component, and an image sensor 1742.
  • the lens shown in Figure 16 is a periscope lens. It should be understood that the lens may be a fixed focal length lens or a zoom lens. The lens can also be a short-focus lens, a long-focus lens, etc.
  • the lens includes a lens barrel 1720 and one or more lenses (the lens 1710 shown in FIG. 16) arranged in the lens barrel 1720.
  • One end of the lens barrel 1720 is assembled with the auto focus drive assembly.
  • the lens 1710 may be a plastic lens or a glass lens.
  • the lens 1710 may be a spherical lens or an aspheric lens.
  • the auto-focus driving assembly includes a housing 1730, which is assembled with a lens barrel 1720, and is used for auto-focusing or optical image stabilization of the lens.
  • the auto-focus driving assembly may further include, for example, a driving integrated circuit provided in the housing 1730, which is not shown in FIG. 16.
  • the autofocus drive assembly can also be called a motor.
  • the method for auto-focusing or optical image stabilization performed by the auto-focus driving assembly may be similar to the prior art. Here, in order to avoid redundant description, the description is omitted.
  • a light-shielding body is provided on the lens, the inner wall of the lens barrel, and the inner wall of the housing of the auto-focus drive assembly (hereinafter referred to as the inner wall of the housing) to block the light irradiated on the first light-shielding body from being reflected back to the auto-focus drive assembly housing 1730 inside the cavity.
  • the number of light-shielding bodies can be one or more.
  • the light shielding body 1751 is provided on the inner wall of the housing.
  • the type, shape, size, and location of the light shielding body 1751 can be set with reference to Figs. 5-15.
  • the light shielding body 1752 is provided on the inner wall of the lens barrel.
  • the light-shielding body 1752 is arranged in an area far away from the lens 1710 and close to the auto focus driving assembly. This area can also be regarded as an area where no lens is provided.
  • the type, shape, size, and location of the light shielding body 1752 can be set with reference to Figs. 5-15. When light is irradiated on the light shielding body 1752, it can play a role of extinction and prevent the light irradiated on the light shielding body 1752 from continuing to propagate in the cavity of the lens barrel 1720.
  • the lens and the autofocus drive assembly are two parts that can be assembled, if the processing accuracy of the lens does not meet the requirements, or the design of the lens is unreasonable, halos are likely to occur. Therefore, the light-shielding body provided in the auto-focus drive assembly can be used for remedy, avoiding the repair processing of the lens, and reserves a margin for the processing accuracy of the lens.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components can be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • each unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium.
  • the technical solution of this application essentially or the part that contributes to the existing technology or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the method described in each embodiment of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (read-only memory, ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program code .

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Abstract

一种自动聚焦驱动组件，自动聚焦驱动组件应用于包含镜头和传感器的电子设备（100），入射至镜头的光线经过自动聚焦驱动组件而射入传感器（242），自动聚焦驱动组件包括：驱动马达，用于驱动镜头移动；壳体（530），用于收容驱动马达；第一遮光体（554），设置在壳体（530）的内壁上，用于阻挡照射在第一遮光体（554）上的光反射回壳体（530）的腔内。第一遮光体（554）设置在壳体（530）内壁，当有光线照射在第一遮光体（554）上，可以起到消光的作用，可以消除例如喷光型或柱形的光晕；并且为镜头的加工精度预留了余量。

Description

自动聚焦驱动组件、镜头及电子设备
本申请要求在2019年4月26日提交中国国家知识产权局、申请号为201910343262.0的中国专利申请的优先权，发明名称为“自动聚焦驱动组件、镜头及电子设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及成像领域，并且更具体地，涉及自动聚焦驱动组件、镜头及电子设备。
背景技术
为满足人们的拍摄需求，供应商们设计并制造出多种镜头。由于每种镜头的设计结构不同，每种镜头所应用的拍摄场景不同。例如，短焦镜头常常用于近景拍摄，长焦镜头常常用于远景拍摄。为了使人们能够方便使用镜头，供应商们倾向于设计一种外形小巧的镜头，即在不影响镜头使用效果的情况下缩小镜头的尺寸。因此，对于例如长焦镜头等结构复杂的镜头，缩小镜头尺寸往往会引入新的问题。例如，对于结构复杂的镜头，实现镜头内部光路的预测是更加困难的。再例如，镜头的复杂度越高，镜头内部零件的加工精度要求也就越高。若镜头的加工精度不满足要求，容易在拍摄图像上产生光晕、鬼影等不良成像效果。
发明内容
本申请提供一种自动聚焦驱动组件、镜头及电子设备，以避免拍摄图像上产生不良成像效果。
第一方面，提供了一种自动聚焦驱动组件，所述自动聚焦驱动组件应用于包含镜头和传感器的电子设备，入射至所述镜头的光线经过所述自动聚焦驱动组件而射入所述传感器，所述自动聚焦驱动组件包括：驱动马达，用于驱动所述镜头移动；壳体，用于收容所述驱动马达；第一遮光体，设置所述壳体的内壁上，用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内。
遮光片的颜色通常为黑色，可以吸收光线，即降低光线的反射率。再利用遮光体的结构形状，可以使光线发生散射，即光线在表面曲率较大的照射位置可以偏离原来的传播方向、分散地传播，降低光线的反射率。遮光体的尺寸对光的散射有较大影响，例如遮光片的厚度越薄，光线越容易发生散射，光线的反射率越低。
遮光体设置在壳体内壁，当有光线照射在遮光体上，可以起到消光的作用，避免照射在遮光体上的光线反射回壳体的腔内。并且，配置在壳体内壁上的遮光片可以消除例如喷光型或柱形的光晕。由于镜头与自动对焦驱动组件是可组装的两个部件，如果镜头的加工精度不满足要求，或者镜头的设计不合理，容易产生光晕。因此，可以利用设置在自动对焦驱动组件内的遮光体补救，避免了对镜头的修补处理，为镜头的加工精度预留了余量。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体在所述壳体上的设置 位置在所述镜头相对于所述壳体的移动范围以外。
为了防止出现运动干涉，遮光体设置在不会触碰到镜筒的位置，可以防止出现运动干涉，避免元件损坏。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体为遮光环，所述壳体的内壁设置有内螺纹，所述第一遮光体的外周设置有外螺纹，所述第一遮光体与所述壳体的内壁螺纹连接。
遮光片与壳体内壁螺纹连接在一起，使得在装配遮光片的过程中可以调整遮光片在壳体内壁上的相对位置。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体的内周用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内；所述第一遮光体的内周设置有一个或多个倒角。
遮光片的厚度越薄，遮光效果越好。削去遮光片表面的一部分材料以形成倒角、减小遮光片的局部厚度，可以进一步提高遮光片的消光效果。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体设置在所述壳体的内壁上的凹槽内。
本申请提供一种放置遮光体的方式，使得遮光体可以嵌入自动聚焦驱动组件的内壁，使得遮光体可以安装稳定。
结合第一方面，在第一方面的某些实现方式中，所述自动聚焦驱动组件还包括：一个或多个垫片，设置在所述壳体的内壁上的凹槽内，并与所述第一遮光体接触。
通过调整垫片与遮光体的安装顺序，可以调整遮光体在壳体内壁上的相对位置。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体为遮光环，所述第一遮光体的外周设置在所述壳体的内壁上的凹槽内，所述第一遮光体的内周用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内；所述第一遮光体的内周设置有一个或多个倒角。
遮光片的厚度越薄，遮光效果越好。削去遮光片表面的一部分材料以形成倒角、减小遮光片的局部厚度，可以进一步提高遮光片的消光效果。
结合第一方面，在第一方面的某些实现方式中，所述第一遮光体为遮光片、遮光布、遮光胶、遮光环或可用于遮光的凹凸不平的表面结构。
有时这种可用于遮光的表面结构被称为雾面。
一方面，该凹凸不平的表面结构的颜色可以是黑色，使该凹凸不平的表面结构可以用于吸收光线。另一方面，该凹凸不平的表面结构因具有凹凸不平的特点，使照射在该特殊表面结构上的光线容易发生散射，因此可以进一步阻挡光线在壳体的腔内继续传播。
结合第一方面，在第一方面的某些实现方式中，所述镜头包括镜筒以及设置在所述镜筒内的镜片；所述镜头进一步包括：第二遮光体，设置在所述镜筒的内壁上或所述镜片的凹槽内，用于阻挡照射在所述第二遮光体上的光反射回所述镜筒的腔内。
配置在镜片上的遮光片或配置在镜筒内壁且靠近镜片的区域的遮光片可以消除例如圆形或柱形的光晕。配置在远离镜片、靠近自动对焦驱动组件的区域的遮光片可以消除例如喷光型或柱形的光晕。
结合第一方面，在第一方面的某些实现方式中，所述镜头为潜望式镜头或长焦镜头。
第二方面，提供了一种镜头，所述镜头应用于包含自动聚焦驱动组件和传感器的电子 设备，入射至所述镜头的光线经过所述自动聚焦驱动组件而射入所述传感器，所述镜头包括：镜片；镜筒，用于收容所述镜片；第二遮光体，设置在所述镜筒的内壁上，与所述自动聚焦驱动组件的距离小于阈值，用于阻挡照射在所述第二遮光体上的光反射回所述镜筒的腔内。
遮光片的颜色通常为黑色，可以吸收光线，即降低光线的反射率。再利用遮光体的结构形状，可以使光线发生散射，即光线在表面曲率较大的照射位置可以偏离原来的传播方向、分散地传播，降低光线的反射率。遮光体的尺寸对光的散射有较大影响，例如遮光片的厚度越薄，光线越容易发生散射，光线的反射率越低。
遮光体设置在远离镜片、靠近自动对焦驱动组件的区域。该区域还可以被视为不设置镜片的区域。当有光线照射在遮光体上，可以起到消光的作用，避免照射在遮光体上的光线在镜筒的腔内继续传播。配置在远离镜片、靠近自动对焦驱动组件的区域的遮光片可以消除例如喷光型或柱形的光晕。
结合第二方面，在第二方面的某些实现方式中，所述第二遮光体为遮光环，所述镜筒的内壁设置有内螺纹，所述第二遮光体的外周设置有外螺纹，所述第二遮光体与所述镜筒的内壁螺纹连接。
遮光片与镜筒内壁螺纹连接在一起，使得在装配遮光片的过程中可以调整遮光片在镜筒内壁上的相对位置。
结合第二方面，在第二方面的某些实现方式中，所述第二遮光体的内周用于阻挡照射在所述第二遮光体上的光反射回所述壳体的腔内；所述第二遮光体的内周设置有一个或多个倒角。
遮光片的厚度越薄，遮光效果越好。削去遮光片表面的一部分材料以形成倒角、减小遮光片的局部厚度，可以进一步提高遮光片的消光效果。
结合第二方面，在第二方面的某些实现方式中，所述第二遮光体设置在所述镜筒的内壁上的凹槽内。
本申请提供一种放置遮光体的方式，使得遮光体可以嵌入镜筒的内壁，使得遮光体可以安装稳定。
结合第二方面，在第二方面的某些实现方式中，所述镜头还包括：一个或多个垫片，设置在所述镜筒的内壁上的凹槽内，并与所述第二遮光体接触。
通过调整垫片与遮光体的安装顺序，可以调整遮光体在壳体内壁上的相对位置。
结合第二方面，在第二方面的某些实现方式中，所述第二遮光体为遮光环，所述第二遮光体的外周设置在所述镜筒的内壁上的凹槽内，所述第二遮光体的内周用于阻挡照射在所述第二遮光体上的光反射回所述壳体的腔内；所述第二遮光体的内周设置有一个或多个倒角。
遮光片的厚度越薄，遮光效果越好。削去遮光片表面的一部分材料以形成倒角、减小遮光片的局部厚度，可以进一步提高遮光片的消光效果。
结合第二方面，在第二方面的某些实现方式中，所述第二遮光体为遮光片、遮光布、遮光胶、遮光环或可用于遮光的凹凸不平的表面结构。
有时这种可用于遮光的表面结构被称为雾面。
一方面，该凹凸不平的表面结构的颜色可以是黑色，使该凹凸不平的表面结构可以用于吸收光线。另一方面，该凹凸不平的表面结构因具有凹凸不平的特点，使照射在该特殊 表面结构上的光线容易发生散射，因此可以进一步阻挡光线在镜筒的腔内继续传播。
结合第二方面，在第二方面的某些实现方式中，所述自动聚焦驱动组件包括：驱动马达，用于驱动所述镜头移动；壳体，用于收容所述驱动马达；第一遮光体，设置所述壳体的内壁上，用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内。
遮光体设置在壳体内壁，当有光线照射在遮光体上，可以起到消光的作用，避免照射在遮光体上的光线反射回壳体的腔内。并且，配置在壳体内壁上的遮光片可以消除例如喷光型或柱形的光晕。由于镜头与自动对焦驱动组件是可组装的两个部件，如果镜头的加工精度不满足要求，或者镜头的设计不合理，容易产生光晕。因此，可以利用设置在自动对焦驱动组件内的遮光体补救，避免了对镜头的修补处理，为镜头的加工精度预留了余量。
结合第二方面，在第二方面的某些实现方式中，所述镜头为潜望式镜头或长焦镜头。
第三方面，提供一种镜头模组，包括镜头以及如第一方面以及第一方面任一种可能的实现方式中的自动聚焦驱动组件。
第四方面，提供一种镜头模组，包括如第二方面以及第二方面任一种可能的实现方式中的镜头以及自动聚焦驱动组件。
第五方面，提供一种摄像头模组，包括镜头、图像传感器以及如第一方面以及第一方面任一种可能的实现方式中的自动聚焦驱动组件。
第六方面，提供一种摄像头模组，包括如第二方面以及第二方面任一种可能的实现方式中的镜头、图像传感器以及自动聚焦驱动组件。
第七方面，提供一种电子设备，包括如第一方面以及第一方面任一种可能的实现方式中的自动聚焦驱动组件。
第八方面，提供一种电子设备，包括如第二方面以及第二方面任一种可能的实现方式中的镜头。
第九方面，提供一种电子设备，包括如第三方面或第四方面所述的镜头模组。
第十方面，提供一种电子设备，包括如第五方面或第六方面所述的摄像头模组。
附图说明
图1是一种电子设备的示意性结构图。
图2是一种摄像头模组的示意性结构图。
图3是长焦镜头的示意性结构图。
图4是根据本申请实施例的一个镜头模组的示意性结构图。
图5是根据本申请实施例的一个遮光体的示意性结构图。
图6是根据本申请实施例的一个遮光体的示意性结构图。
图7是根据本申请实施例的一个遮光体的示意性结构图。
图8是根据本申请实施例的一个遮光体的示意性结构图。
图9是根据本申请实施例的一个遮光体的示意性结构图。
图10是根据本申请实施例的一个安装遮光体的示意性结构图。
图11是根据本申请实施例的一个安装遮光体的示意性结构图。
图12是根据本申请实施例的一个安装遮光体的示意性结构图。
图13是根据本申请实施例的一个遮光体的示意性结构图。
图14是根据本申请实施例的一个遮光体的示意性结构图。
图15是根据本申请实施例的一个遮光体的示意性结构图。
图16是根据本申请实施例的一个潜望式摄像头模组的示意性结构图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
为便于理解本申请，下面首先简单介绍本申请中涉及的几个概念。
一、自动对焦：
对于镜片相对位置关系固定的镜头来说，对焦可以理解为实现物距和像距的变化，达到共轭关系，使得成像清晰。这可以通过手机里面的自动聚焦驱动组件驱动这个镜头组移动来实现。换句话说，自动对焦的过程中，成像镜头的焦距可以不变，仅通过改变物距和像距来实现自动对焦。
二、光学防抖：
光学防抖技术是在摄像头模组内的陀螺仪侦测到微小的移动时，将信号传至图像芯片以计算需要补偿的位移量，然后通过推动镜头组根据计算得到的位移量加以补偿，来克服因相机的抖动产生的图像模糊。
三、视场角(field of view，FOV)：
在光学仪器中，以光学仪器的镜头为顶点，以被测目标的物像可通过镜头的最大范围的两条边缘构成的夹角，称为视场角。视场角的大小决定了光学仪器的视野范围，视场角越大，视野就越大。
图1示出了一种电子设备的示意图。如图1所示，电子设备100安装有摄像头模组110和/或摄像头模组120。
电子设备100可以为具有摄像或拍照功能的电子设备，例如手机、智能手机、平板电脑、手提电脑、摄像机、录像机、照相机或其他形态的具有拍照或摄像功能的设备。为方便理解，本申请实施例以电子设备100为手机为例进行描述。
电子设备100包括外壳、显示屏组件。外壳包括边框和后盖，边框环绕在后盖的边缘。显示屏组件设置在边框且远离后盖的一侧。通常情况下，用户面向显示屏组件以观察显示屏组件上显示的图像，因此，显示屏组件面向用户的表面可以是电子设备100的正面；相应地，后盖的外露面可以是电子设备100的背面。
电子设备100的正面和背面均可以设置摄像头模组(camera compact module，CCM)；或者，只在电子设备100的正面或电子设备100的背面设置摄像头模组。如图1所示，左图为手机的正面，其上部安装有摄像头模组110；图1中的右图为手机的背面，其左上部安装有摄像头模组120。摄像头模组还可以设置在其他位置。例如，摄像头模组可以内置在电子设备100中，在需要拍摄的情况下借助电子设备100内的弹出结构从电子设备100内弹出。应理解，摄像头模组110和摄像头模组120的安装位置仅仅是示意性的，本申请对摄像头模组的安装位置不做任何限定。
还应理解，摄像头模组110和摄像头模组120的安装个数不限于一个，也可以是两个甚至更多，例如可以在电子设备100的背面安装两个摄像头模组120。本申请实施例对摄像头模组的安装个数不做任何限定。
电子设备100进一步可以包括处理模块，用于将摄像头模组获取的光信号转变为数字图像。例如，处理模块可以包括模数转换器、图像处理器如数字信号处理芯片(digital signal  processing，DSP)。其中，模数转换器可以用于将模拟图像信号转变为数字图像信号；图像处理器可以用于对数字图像信息处理，以形成压缩图像信号。
应理解，图1中示出的电子设备100上还可以设置有其他的元件，例如听筒、按键等，本申请实施例仅以安装有摄像头模组的电子设备为例，但电子设备100上安装的元件并不限于此。
图2示出了摄像头模组200的示意图。摄像头模组200可以是图1中所示的摄像头模组110或摄像头模组120。
摄像头模组200可以包括镜头、自动聚焦驱动组件、图像传感器(sensor)242。其中，摄像头模组200可以固定在电子设备100内的安装座241上。镜头可以是固定焦距镜头，或变焦镜头。镜头还可以是短焦镜头、长焦镜头、潜望式镜头等。
镜头可以包括镜筒220以及设置在镜筒220内的一个或多个镜片(lens)210。镜筒220的一端与自动对焦驱动组件组装，镜筒220的另一端设有进光孔，用于控制镜头的视场角。镜片210可以为塑料(plastic)透镜，也可以为玻璃(glass)透镜。镜片210可以是球面镜片或非球面镜片。
自动对焦驱动组件包括壳体230，可以与镜筒220组装，用于对镜头进行自动对焦或光学防抖。自动对焦驱动组件例如还可以包括设置在壳体230内的驱动集成电路等，图2中未示出。自动对焦驱动组件又可以称作马达。利用自动对焦驱动组件实现自动对焦或光学防抖的方法可以与现有技术相似，这里，为了避免赘述，省略其说明。
图像传感器242可以是一种半导体芯片。图像传感器242的表面上设有几十万到几百万的光电二极管，光电二极管在受到光照射时会产生电荷，从而将光信号转换为电信号。图像传感器242例如可以是电荷耦合元件(charge coupled device，CCD)、互补金属氧化物导体器件(complementary metal-oxide semiconductor，CMOS)。图2所示将图像传感器242固定在摄像头模组200的安装座241上。图像传感器242也可以固定在其他部件上。本申请对图像传感器242的安装位置不作限定。
摄像头模组200还可以包括例如红外滤光片、线路板等元件(图中未示出)、陀螺仪等。例如，红外滤光片可以消除投射到图像传感器242上的不必要的光线，防止图像传感器242产生伪色或波纹，以提高其有效分辨率和彩色还原性。线路板可以是柔性电路板(flexible printed circuit，FPC)或印刷电路板(printed circuit board，PCB)，用于传输电信号。
摄像头模组200的工作原理可以是，由被摄物体反射的光线穿过镜头内的一个或多个镜片210、自动聚焦驱动组件投射到图像传感器242表面上。为了获得清楚、无畸变的图像，可以利用透镜成像原理，通过自动聚焦驱动组件驱动镜筒220使镜筒220内的镜片210移动至合适的位置。从而，光线可以在图像传感器242上聚焦，形成清晰的光学图像。图像传感器242可以将光学图像转为电信号，从而获得图像信号。
如图3所示是一种设置在长焦镜头300内的镜片组的结构示意图。长焦镜头300包括镜片311-317以及滤光片251。外界的光线依次穿过镜片311-317以及滤光片251并照射在传感器242上。光线在穿进、穿出镜片311-317或滤光片的同时会发生折射。图3所示的该长焦镜头300的视场角361为预测视场角。当镜片311-317以及滤光片351的形状、大小均是确定的，且镜片311-317、滤光片351、图像传感器242之间的相对位置关系也是确定的，那么信号在长焦镜头300内传播的情况是可以被预测的。例如，可以预测光线 在该镜头内部的传播方向，可以预测在每个镜片发生的折射以及相应的折射率等，可以预测镜头周围场景内的某个物体投影在图像传感器242从而在图像传感器242上形成的图像。然而，由于长焦镜头300属于复杂镜头，其内部元件较多，预测光信号传播的误差较大。再加上，如果镜头的加工精度不满足要求，例如镜片安装倾斜、镜片与镜片之间的间距不满足公差要求、镜面表面粗糙度不满足要求、镜片厚度不满足公差要求等，极容易导致光的传播方向发生不可预料的偏转，从而在拍摄图像上形成光晕。因此，需要一种避免在拍摄图像上形成光晕的技术方案。
图4示出了本申请实施例的一种镜头模组的示意性结构图。本申请实施例的镜头模组500可以是图1所示的摄像头模组110或摄像头模组120，也可以是摄像头模组110或摄像头模组120的一部分。例如，镜头模组500可以安装在如图1所示的电子设备100内的安装座241上，安装座241上设置有图像传感器242。
应理解，在一些手机内部，摄像头模组内的镜头、自动聚焦驱动组件、图像传感器通过组装的方式形成一个整体，该整体可以称为摄像头模组。而在某些情况下，镜头与自动聚焦驱动组件形成一个整体，该整体在本申请实施例中被称为镜头模组。例如在数码相机中，镜头与自动聚焦驱动组件组装形成一个整体，该整体可拆卸地安装在数码相机的机体上，而图像传感器则是安装在数码相机的机体内。因此，为了描述更加清楚，在本申请实施例中，摄像头模组可以包含图像传感器，而镜头模组可以不包含图像传感器。在某些情况下，例如在手机中，镜头模组与图像传感器组装形成的整体可以是一种摄像头模组。换句话说，在某些情况下，镜头模组可以看成是摄像头模组的一部分。
镜头模组500由镜头、自动聚焦驱动组件组装形成。例如，在手机中，镜头模组500可以安装在手机内的安装座241上，与手机内的图像传感器242组装形成摄像头模组，如图2所示。再例如，在数码相机中，镜头模组500可以安装在用于安装镜头模组的安装座上。
镜头包括镜筒520以及设置在镜筒520内的一个或多个镜片(如图4所示的镜片510)。镜头可以是固定焦距镜头，或变焦镜头。镜头还可以是短焦镜头、长焦镜头、潜望式镜头等。镜筒520的一端与自动对焦驱动组件组装。镜片510可以为塑料(plastic)透镜，也可以为玻璃(glass)透镜。镜片510可以是球面镜片或非球面镜片。
自动对焦驱动组件用于对镜头进行自动对焦或光学防抖。自动对焦驱动组件包括壳体530，壳体530的第一部分可以与镜筒520组装，壳体530的第二部分可以安装在电子设备100的安装座241上，且该第二部分远离镜头、靠近图像传感器242。自动对焦驱动组件例如还可以包括设置在壳体530内驱动集成电路等，图4中未示出。自动对焦驱动组件又可以称作马达。自动对焦驱动组件进行自动对焦或光学防抖的方法可以与现有技术相似，这里，为了避免赘述，省略其说明。
在镜片、镜筒内壁和/或自动对焦驱动组件的壳体内壁(以下简称壳体内壁)设置遮光体，用于阻挡照射在遮光体上的光反射回所述自动聚焦驱动组件的壳体530的腔内。其中，遮光片的数量可以是一个或多个。
为便于理解本申请，下面简单介绍遮光片的消光原理。
遮光片的颜色通常为黑色，可以吸收光线，即降低光线的反射率。再利用遮光体的结构形状，可以使光线发生散射，即光线在表面曲率较大的照射位置可以偏离原来的传播方向、分散地传播，降低光线的反射率。遮光体的尺寸对光的散射有较大影响，例如遮光片 的厚度H(如图5所示)越薄，光线越容易发生散射，光线的反射率越低。
如图4所示，遮光体551设置在镜片510上。例如，遮光体551贴覆在镜片510表面。当有光线照射在遮光体551上，可以起到消光的作用，避免照射在遮光体551上的光线反射回镜筒520并在镜筒520的腔内继续传播。
如图4所示，遮光体552设置在镜筒内壁。特别地，遮光体552配置在镜片510周围，如遮光体552设置在两个镜片之间。例如，遮光体552是一种遮光贴(参考图14)，可以粘贴在镜筒内壁。当有光线照射在遮光体552上，可以起到消光的作用，避免照射在遮光体552上的光线在镜筒520的腔内继续传播。
如图4所示，遮光体553设置在镜筒内壁。特别地，遮光体553配置在远离镜片510、靠近自动对焦驱动组件的区域。换句话说，遮光体553在镜筒内壁的位置，与自动聚焦驱动组件的距离小于阈值。该阈值可以根据实际情况设定。该区域还可以被视为不设置镜片的区域。例如，在镜筒内壁靠近自动对焦驱动组件的区域上设置有可以用于吸光的表面结构(参考图15)，该表面结构即为遮光体553；即遮光体553与镜筒内壁合为一体。当有光线照射在遮光体553上，可以起到消光的作用，避免照射在遮光体553上的光线在镜筒520的腔内继续传播。
如图4所示，遮光体554设置在壳体内壁。例如，在壳体内壁上挖一个凹槽，并将可以用于消光的遮光体554放置在凹槽内。当有光线照射在遮光体554上，可以起到消光的作用，避免照射在遮光体554上的光线反射回壳体530的腔内。
进一步地，根据实验和模拟结果显示，配置在镜片510上的遮光片551或配置在镜筒内壁且靠近镜片510的区域的遮光片552可以消除例如圆形或柱形的光晕。配置在远离镜片510、靠近自动对焦驱动组件的区域的遮光片553以及设置在壳体内壁上的遮光片554可以消除例如喷光型或柱形的光晕。
进一步地，由于镜头与自动对焦驱动组件是可组装的两个部件，如果镜头的加工精度不满足要求，或者镜头的设计不合理，容易产生光晕。因此，可以利用设置在自动对焦驱动组件内的遮光体补救，避免了对镜头的修补处理，为镜头的加工精度预留了余量。
图5-15所示为本申请实施例提供的遮光体550的结构示意图。遮光体550可以是图4所示的遮光体551-554。可以理解的是，图5-15所示的实施例仅是为了帮助本领域技术人员更好地理解本申请的技术方案，而并非是对本申请技术方案的限制。在受益于前述描述和相关附图中呈现的指导启示下，本领域技术人员将会想到本申请的许多改进和其他实施例。因此，应理解，本申请不限于所公开的特定实施例。
图5-15所示为遮光体550设置在镜片、镜筒内壁或壳体内壁的横截面形状。下面以壳体内壁610为例进行说明，应理解，遮光体550还可以安装在除壳体内壁610以外的其他位置。
图5所示遮光体550为一种遮光片。如图5所示，在壳体内壁610上可以设置有凹槽，用于放置遮光片550。应理解，凹槽内放置遮光片550的数量可以是一个或多个，即一个凹槽内可以放置一个或多个遮光片。在光线照射在遮光片550的内周表面后，遮光片550可以降低光的反射率，阻挡光线在壳体530的腔内继续传播。一方面，遮光片本身的颜色为黑色，使遮光片可以用于吸收光线；另一方面，遮光片的结构可以进一步阻挡光线在壳体530的腔内继续传播。例如，当光线照射在遮光片550的上表面621时，光线发生反射并可以朝着镜片510继续传播，甚至射出镜筒520，因此光线不会照射在图像传感器242 上。再例如，当光线照射在遮光片550的上表面621与侧表面623的交叉位置622上或者是照射在侧表面623上时，由于遮光片550的厚度非常薄，该交叉位置的表面以及该侧表面623可能具有较大的曲率，光线可以在该交叉位置发生散射，从而降低光线的反射率。遮光片550的厚度H例如可以是0.012mm、0.016mm、0.021mm、0.03mm等。遮光片550的厚度H越薄，遮光效果越好。应理解，由于遮光片的厚度非常薄，实际加工得到的侧表面623的轮廓线可能是直线(如图5所示)，也可能是曲线(如图6所示)。图7-14以遮光片550的侧表面623的轮廓线为直线或由多个直线构成的折线为例进行说明，应理解，遮光片550的侧表面623的轮廓线还可以是曲线。
为了进一步提高遮光片的消光效果，减小遮光片的整体厚度H有时是不可行的。可以采取对遮光片局部减薄的方式，提高遮光片的消光效果。图7-9所示为对遮光片局部减薄的示意图。
如图7所示，可以削去遮光片550的上表面621的一部分材料以减小遮光片550的侧表面623的厚度并形成倒角，从而提高遮光片的消光效果。
如图8所示，可以削去遮光片550的下表面的一部分材料以减小遮光片550的侧表面623的厚度并形成倒角，从而提高遮光片的消光效果。
如图9所示，可以削去遮光片550的上表面621以及下表面的一部分材料以形成两个倒角，甚至形成一个尖角，极大地减小遮光片550的侧表面623的厚度，显著提高遮光片550的消光效果。
可选的，可以通过模拟或实验的方式确定如何设置遮光片，例如确定遮光体的形状、尺寸，设置遮光体的位置等。
图5至图10示出的遮光片可以是任意形状的多面体。下面以圆环状的遮光片为例说明如何设置遮光片。图5至图10所示的遮光片还可以是除圆环以外的其他形状，确定其他形状的遮光片的尺寸的方式与确定圆环状遮光片的尺寸的方式类似，在此不再赘述。
图5至图10示出的遮光片550可以是一种圆环状的遮光片(又称遮光环)，其内径与需要消光的位置有关。以图5所示的遮光片550为例，在遮光片550的上表面621与侧表面623的交叉位置622以及遮光片550的侧表面623的消光效果较好，且遮光片550的侧表面623还可以限制光的传播方向，因此，可以根据需要消光的位置确定遮光片550的内径。需要消光的位置可以通过模拟或实验的方式获得。
除图5至10示出的设置遮光片的方式以外，还有如图10-13所示的设置遮光片的方式。图10-13所示为遮光片550设置在镜片、镜筒内壁或壳体内壁的横截面形状。下面以壳体内壁610为例进行说明，应理解，遮光片还可以安装在除壳体内壁610以外的其他位置。
如图10所示，在壳体内壁610上可以设置有凹槽，用于放置遮光片550以及垫片1310，垫片1310与遮光片550接触。通过调整垫片1310与遮光体的安装顺序，可以调整遮光体在壳体内壁610上的相对位置。例如，图10所示在壳体内壁610的凹槽内设有3个垫片1310以及一个遮光片550，其中在遮光片550的上方设置2个垫片1310，在遮光片550的下方设置1个垫片1310。可以看出，在图10所示的凹槽内设置垫片1310以及遮光片550，使得遮光片550可以设置在凹槽内的4个位置，而将遮光片550上方的垫片1310调整至遮光片550的下方，可以调整遮光片550在凹槽内的相对位置。
如图11所示，在壳体内壁610上可以设置有内螺纹，在遮光片550的外周可以设置 有外螺纹。图12所示为遮光片550旋入壳体530的腔内的示意图。通过在遮光片550与壳体内壁610形成螺纹配合，遮光片550与壳体内壁610螺纹连接在一起，使得在装配遮光片550的过程中可以调整遮光片在壳体内壁610上的相对位置。
图11所示的遮光片550的内环面为圆柱面。遮光片550的内环面还可以是其他的平面或曲面。图13所示的遮光片550的内环面可以由两个圆台侧面叠加而成的立体曲面，与圆柱面相比，该立体曲面可以进一步提升遮光片550的消光效果。
特别地，由于在自动对焦或光线防抖的过程中，镜头与自动对焦驱动组件的相对位置会发生变化，因此，为了确保镜头模组在多种场景下正常使用(即避免光晕在图像传感器242上出现)，一方面，遮光片的设置位置应避免其他元件撞击，例如，壳体内壁上的遮光片550应远离镜头、靠近图像传感器242；另一方面，可以在镜片、镜筒内壁和/或壳体内壁的多个位置设置遮光片。
图14所示遮光体550为一种遮光贴。如图14所示，遮光贴可以直接粘贴在壳体内壁610上。由于遮光贴具有吸光作用，在壳体内壁610上粘贴遮光贴可以阻碍光线反射回壳体530的腔内，避免光晕发生。遮光贴可以一种黑色材料。特别的，遮光贴的表面可以形成有特殊的消光表面结构，可以进一步提升消光效果。
图15所示为在壳体内壁610上附着遮光体550是可用于遮光的表面结构。这种表面结构可以与壳体530合为一体，例如，该表面结构可以是一种具有特殊表面的镀层，又如，该表面结构可以是通过压印的方式在壳体内壁610上形成的特殊表面形貌。应理解，还可以通过其他方式在壳体内壁610上形成该表面结构，本申请对此不作限定。
可用于遮光的表面结构通常具有凹凸不平的特点，有时这种可用于遮光的表面结构被称为雾面。例如，在平滑表面上附着有细小的颗粒，以形成凹凸不平或粗糙的表面。例如可以通过磁控溅射、电镀等方式附着有细小的颗粒。再例如，在平滑表面上压制出细小的凹坑，以形成凹凸不平或粗糙的表面。一方面，该特殊表面结构的颜色可以是黑色，使该特殊表面结构可以用于吸收光线。另一方面，该特殊表面结构因具有凹凸不平的特点，使照射在该特殊表面结构上的光线容易发生散射，因此可以进一步阻挡光线在壳体530的腔内继续传播。
图14、图15所示的遮光体可以分布在整个壳体内壁610上。可以通过模拟或实验的方式确定如何设置遮光体，例如遮光体的布置位置。
例如，为了防止出现运动干涉，处在移动状态的镜筒不应当触碰到自动聚焦驱动组件上的遮光体。也就是说，遮光体在所述壳体上的设置位置在所述镜头相对于所述壳体的移动范围以外。
图16所示为本申请实施例的一种摄像头模组的示意性结构图。本申请实施例的摄像头模组1700可以是图1所示的摄像头模组110或摄像头模组120。
摄像头模组1700可以包括镜头、自动聚焦驱动组件、图像传感器1742。图16所示的镜头为潜望式镜头。应理解，镜头可以是固定焦距镜头，或变焦镜头。镜头还可以是短焦镜头、长焦镜头等。
镜头包括镜筒1720以及设置在镜筒1720内的一个或多个镜片(如图16所示的镜片1710)。镜筒1720的一端与自动对焦驱动组件组装。镜片1710可以为塑料(plastic)透镜，也可以为玻璃(glass)透镜。镜片1710可以是球面镜片或非球面镜片。
自动对焦驱动组件包括壳体1730，壳体1730与镜筒1720组装，用于对镜头进行自 动对焦或光学防抖。自动对焦驱动组件例如还可以包括设置在壳体1730内的驱动集成电路等，图16未示出。自动对焦驱动组件又可以称作马达。自动对焦驱动组件进行自动对焦或光学防抖的方法可以与现有技术相似，这里，为了避免赘述，省略其说明。
在镜片、镜筒内壁、自动对焦驱动组件的壳体内壁(以下简称壳体内壁)设置遮光体，用于阻挡照射在所述第一遮光体上的光反射回所述自动聚焦驱动组件壳体1730腔内。其中，遮光体的数量可以是一个或多个。
如图16所示，遮光体1751设置在壳体内壁。遮光体1751的类型、形状、尺寸、设置位置等可以参照图5-15设置。当有光线照射在遮光体1751上，可以起到消光的作用，避免照射在遮光体1751上的光线反射回壳体1730的腔内。
如图16所示，遮光体1752设置在镜筒内壁。特别地，遮光体1752配置在远离镜片1710、靠近自动对焦驱动组件的区域。该区域还可以被视为不设置镜片的区域。遮光体1752的类型、形状、尺寸、设置位置等可以参照图5-15设置。当有光线照射在遮光体1752上，可以起到消光的作用，避免照射在遮光体1752上的光线在镜筒1720的腔内继续传播。
进一步地，由于镜头与自动对焦驱动组件是可组装的两个部件，如果镜头的加工精度不满足要求，或者镜头的设计不合理，容易产生光晕。因此，可以利用设置在自动对焦驱动组件内的遮光体补救，避免了对镜头的修补处理，为镜头的加工精度预留了余量。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(read-only memory，ROM)、随机 存取存储器(random access memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (27)

  1. 一种自动聚焦驱动组件，其特征在于，所述自动聚焦驱动组件应用于包含镜头和传感器的电子设备，入射至所述镜头的光线经过所述自动聚焦驱动组件而射入所述传感器，所述自动聚焦驱动组件包括：
    驱动马达，用于驱动所述镜头移动；
    壳体，用于收容所述驱动马达；
    第一遮光体，设置在所述壳体的内壁上，用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内。
  2. 根据权利要求1所述的自动聚焦驱动组件，所述第一遮光体在所述壳体上的设置位置在所述镜头相对于所述壳体的移动范围以外。
  3. 根据权利要求1或2所述的自动聚焦驱动组件，其特征在于，所述第一遮光体为遮光环，所述壳体的内壁设置有内螺纹，所述第一遮光体的外周设置有外螺纹，所述第一遮光体与所述壳体的内壁螺纹连接。
  4. 根据权利要求3所述的自动聚焦驱动组件，其特征在于，所述第一遮光体的内周用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内；所述第一遮光体的内周设置有一个或多个倒角。
  5. 根据权利要求1或2所述的自动聚焦驱动组件，其特征在于，所述第一遮光体设置在所述壳体的内壁上的凹槽内。
  6. 根据权利要求5所述的自动聚焦驱动组件，其特征在于，所述自动聚焦驱动组件还包括：
    一个或多个垫片，设置在所述壳体的内壁上的凹槽内，并与所述第一遮光体接触。
  7. 根据权利要求5或6所述的自动聚焦驱动组件，其特征在于，所述第一遮光体为遮光环，所述第一遮光体的外周设置在所述壳体的内壁上的凹槽内，所述第一遮光体的内周用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内；所述第一遮光体的内周设置有一个或多个倒角。
  8. 根据权利要求1或2所述的自动聚焦驱动组件，其特征在于，所述第一遮光体为遮光片、遮光布、遮光胶、遮光环或可用于遮光的凹凸不平的表面结构。
  9. 根据权利要求1至8中的任一项所述的自动聚焦驱动组件，其特征在于，所述镜头包括镜筒以及设置在所述镜筒内的镜片；所述镜头进一步包括：
    第二遮光体，设置在所述镜筒的内壁上或所述镜片的凹槽内，用于阻挡照射在所述第二遮光体上的光反射回所述镜筒的腔内。
  10. 根据权利要求1至9中的任一项所述的自动聚焦驱动组件，其特征在于，所述镜头为潜望式镜头或长焦镜头。
  11. 一种镜头，其特征在于，所述镜头应用于包含自动聚焦驱动组件和传感器的电子设备，入射至所述镜头的光线经过所述自动聚焦驱动组件而射入所述传感器，所述镜头包括：
    镜片；
    镜筒，用于收容所述镜片；
    第二遮光体，设置在所述镜筒的内壁上，与所述自动聚焦驱动组件的距离小于阈值，用于阻挡照射在所述第二遮光体上的光反射回所述镜筒的腔内。
  12. 根据权利要求11所述的镜头，其特征在于，所述第二遮光体为遮光环，所述镜筒的内壁设置有内螺纹，所述第二遮光体的外周设置有外螺纹，所述第二遮光体与所述镜筒的内壁螺纹连接。
  13. 根据权利要求12所述的镜头，其特征在于，所述第二遮光体的内周用于阻挡照射在所述第二遮光体上的光反射回所述壳体的腔内；所述第二遮光体的内周设置有一个或多个倒角。
  14. 根据权利要求11所述的镜头，其特征在于，所述第二遮光体设置在所述镜筒的内壁上的凹槽内。
  15. 根据权利要求14所述的镜头，其特征在于，所述镜头还包括：
    一个或多个垫片，设置在所述镜筒的内壁上的凹槽内，并与所述第二遮光体接触。
  16. 根据权利要求14或15所述的镜头，其特征在于，所述第二遮光体为遮光环，所述第二遮光体的外周设置在所述镜筒的内壁上的凹槽内，所述第二遮光体的内周用于阻挡照射在所述第二遮光体上的光反射回所述壳体的腔内；所述第二遮光体的内周设置有一个或多个倒角。
  17. 根据权利要求11所述的镜头，其特征在于，所述第二遮光体为遮光片、遮光布、遮光胶、遮光环或可用于遮光的凹凸不平的表面结构。
  18. 根据权利要求11至17中的任一项所述的镜头，其特征在于，所述自动聚焦驱动组件包括：
    驱动马达，用于驱动所述镜头移动；
    壳体，用于收容所述驱动马达；
    第一遮光体，设置所述壳体的内壁上，用于阻挡照射在所述第一遮光体上的光反射回所述壳体的腔内。
  19. 根据权利要求11至18中的任一项所述的镜头，其特征在于，所述镜头为潜望式镜头或长焦镜头。
  20. 一种镜头模组，其特征在于，包括镜头以及如权利要求1至10中任一项所述的自动聚焦驱动组件。
  21. 一种镜头模组，其特征在于，包括如权利要求11至19中任一项所述的镜头以及自动聚焦驱动组件。
  22. 一种摄像头模组，其特征在于，包括镜头、图像传感器以及如权利要求1至10中任一项所述的自动聚焦驱动组件。
  23. 一种摄像头模组，其特征在于，包括如权利要求11至19中任一项所述的镜头、图像传感器以及自动聚焦驱动组件。
  24. 一种电子设备，其特征在于，包括如权利要求1至10中任一项所述的自动聚焦驱动组件。
  25. 一种电子设备，其特征在于，包括如权利要求11至19中任一项所述的镜头。
  26. 一种电子设备，其特征在于，包括如权利要求20或21所述的镜头模组。
  27. 一种电子设备，其特征在于，包括如权利要求22或23所述的摄像头模组。
PCT/CN2020/085472 2019-04-26 2020-04-18 自动聚焦驱动组件、镜头及电子设备 WO2020216153A1 (zh)

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