CN104280854A - Focusing structure, lens module and camera module provided with lens module - Google Patents

Focusing structure, lens module and camera module provided with lens module Download PDF

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Publication number
CN104280854A
CN104280854A CN201410497633.8A CN201410497633A CN104280854A CN 104280854 A CN104280854 A CN 104280854A CN 201410497633 A CN201410497633 A CN 201410497633A CN 104280854 A CN104280854 A CN 104280854A
Authority
CN
China
Prior art keywords
movable plate
lens
pedestal
camera
module
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201410497633.8A
Other languages
Chinese (zh)
Inventor
王昕�
申成哲
于立新
刘燕妮
齐书
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nanchang OFilm Tech Co Ltd
Suzhou OFilm Tech Co Ltd
Nanchang OFilm Optoelectronics Technology Co Ltd
OFilm Group Co Ltd
Original Assignee
Nanchang OFilm Tech Co Ltd
Suzhou OFilm Tech Co Ltd
Nanchang OFilm Optoelectronics Technology Co Ltd
Shenzhen OFilm Tech Co Ltd
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 Nanchang OFilm Tech Co Ltd, Suzhou OFilm Tech Co Ltd, Nanchang OFilm Optoelectronics Technology Co Ltd, Shenzhen OFilm Tech Co Ltd filed Critical Nanchang OFilm Tech Co Ltd
Priority to CN201410497633.8A priority Critical patent/CN104280854A/en
Publication of CN104280854A publication Critical patent/CN104280854A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/02Mountings, adjusting means, or light-tight connections, for optical elements for lenses
    • G02B7/04Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS 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
    • G03B13/00Viewfinders; Focusing aids for cameras; Means for focusing for cameras; Autofocus systems for cameras
    • G03B13/32Means for focusing
    • G03B13/34Power focusing

Abstract

The invention provides a focusing structure, a lens module and a camera module provided with the lens module. The focusing structure comprises a base, a movable part, magnets and coils located at the edge of the base. The movable part comprises a movable sheet and a plurality of balls. The middle of the movable sheet is provided with a mounting hole. At least two siding rods are arranged on the peripheral edge of the movable sheet in a spaced mode. The sliding rods are perpendicular to the movable sheet. The base is provided with sliding grooves corresponding to the sliding rods. The inner walls of the sliding grooves are provided with rolling grooves in a concaved mode. The balls are sequentially arranged in the rolling grooves and form rolling surfaces protruding out of the rolling grooves. A focusing lens is contained and fixed into the mounting hole. The magnets are arranged on the movable sheet and surround the mounting hole. The movable sheet is contained in the base. The sliding rods are mounted in the sliding grooves in a sliding mode and abut against the rolling surfaces. The movable sheet is located in the base through frictional force between the sliding rods and the balls. The coils are opposite to the magnets. The invention further provides the lens module and the camera module which are provided with the focusing structure.

Description

Focusing structural, camera lens module and there is the camera module of described camera lens module
Technical field
The present invention relates to a kind of focusing structural, camera lens module and there is the camera module of described focusing structural.
Background technology
Current, traditional camera lens module auto-focusing module is by voice coil motor and associated gear or screw drive structure, and controls the moving loads camera motion of motor by driver circuit, thus realizes the focus function of camera lens; Under the acting force that wherein voice coil motor mainly produces at magnet by spring leaf and coil energization, realize camera lens load smoothly and continuous print move; But the torsion between lens subassembly and motor controls very important, the large fragile motor of torsion, and torsion tiny lens easily runs Jiao, and the friction fit of gear or screw thread easily produces friction dust and pollutes module, affects camera lens module quality.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, provides a kind of focusing structural stably.
The present invention there is a need to provide a kind of to be had the camera lens module of described focusing structural and has the camera module of described focusing structural.
To achieve these goals, embodiment of the present invention provides following technical scheme:
The invention provides a kind of focusing structural, for driving in camera lens module, focus lens is focused, described focusing structural comprises pedestal, movable part, magnet and be positioned at the coil of susceptor edges, described movable part comprises movable plate, several ball, mounting hole is provided with in the middle part of described movable plate, described movable plate outer peripheral edges are interval with at least two sliding bars, described at least two sliding bars arrange perpendicular to described movable plate and the opposite end of each sliding bar described extends away from described movable plate, on described pedestal, corresponding described sliding bar is provided with chute, described chute inwall is arranged with slot rolling, described ball is arranged in order the rolling surface also being formed in described slot rolling and protrude described slot rolling, describedly focus lens is accommodated and is fixed in described mounting hole, described magnet is located on described movable plate around described mounting hole periphery, described movable plate is contained in described pedestal, described sliding bar slides to be loaded in described chute and supports with rolling surface, and described movable plate is positioned in pedestal by the friction force of described sliding bar and described ball, described coil is relative with described magnet, and the magnetic field that described coil produces and magnet effect push away and make described movable plate drive sliding bar to slide along optical axis on described rolling surface, so make described to focus lens along axis movement.
Wherein, the volume that each spin described is greater than 1/2nd is accommodated by described slot rolling.
Wherein, the surface of each sliding bar described described movable plate dorsad is axially provided with docking groove relative to described slot rolling along described movable plate, and described docking groove and described rolling surface support.
Wherein, the cross section of described slot rolling and described docking groove is V-arrangement, and described ball is in the space that described slot rolling and described docking groove are formed jointly and described slot rolling and described docking groove respectively accommodate the volume of described spin half.
Wherein, described pedestal is the tubular of annular, and the cross section that described chute is parallel to pedestal axis is T-shaped, and described chute is located on the internal perisporium of described pedestal, and described slot rolling is in the middle part of described pedestal.
The invention provides a kind of camera lens module, described camera lens module comprises lens barrel, to focus lens, main lens group and above-mentioned focusing structural, described is a slice eyeglass to focus lens, described main lens group and focusing structural are contained in described lens barrel and interval and arrange, and described coil is fixed on main lens group periphery in described lens barrel.
Wherein, described camera lens module also comprises base, is loaded on the optical filter of base, and described lens barrel covers on described base, is shownly oppositely arranged focus lens and the coaxial and interval of described optical filter.
Wherein, described camera lens module also comprises displacement sensor, and described displacement sensor is fixed on described base edge and towards described movable plate.
Wherein, described lens barrel is the cover body of one end open, offers the camera aperture relative with described main lens group in the middle part of lens barrel blind end, described pedestal be described lens barrel a part and near openend.
The present invention also provides a kind of camera module, described camera module comprises wiring board, above-described camera lens module and is loaded on the image sensor of wiring board, describedly affect sensor and described optical filter interval is oppositely arranged, described to focus lens relative to described main lens group closer to described optical filter.
Focusing structural of the present invention is when camera module is taken, by giving coil with electric current and magnet effect, push away and make described movable plate drive sliding bar to move along described rolling surface, described ball because with the friction force of described sliding bar and own rotation, and then promote described sliding bar generation displacement, drive described focus lens along axis movement, and then realize focusing object, avoid adaptive torsion problem between camera lens and motor, realize steadily focusing.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the camera lens modular structure schematic diagram that the present invention has focusing structural;
Fig. 2 is the enlarged diagram overlooked of the camera lens module knot II part had described in Fig. 1.
Fig. 3 is the camera module schematic diagram of the camera lens module knot had described in Fig. 1.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1 and Fig. 2, present pre-ferred embodiments provides a kind of focusing structural 20, in camera lens module to the focusing of focus lens 17.Described focusing structural 20 comprises pedestal 21, movable part 22, magnet 27 and be positioned at the coil 28 at pedestal 21 edge.Described movable part 22 comprises movable plate 23 and several ball 25.Mounting hole (figure does not mark) is provided with in the middle part of described movable plate 23, described movable plate 23 outer peripheral edges are interval with at least two sliding bars 24, described at least two sliding bars 24 are arranged perpendicular to described movable plate 23 and the opposite end of each sliding bar 24 described extends away from described movable plate 23, on described pedestal 21, corresponding described sliding bar 24 is provided with chute 26, described chute 26 inwall is arranged with slot rolling 261, and described ball 25 is arranged in order the rolling surface also being formed in described slot rolling 261 and protrude described slot rolling 261; Describedly focus lens 17 is accommodated and is fixed in described mounting hole, described magnet 27 is located on described movable plate 23 around described mounting hole periphery, described movable plate 23 is contained in described pedestal 21, described sliding bar 24 slides to be loaded in described chute 26 and supports with rolling surface, and described movable plate 23 is positioned in pedestal 21 by described sliding bar 24 with the friction force of described ball 25; Described coil 28 is relative with described magnet 27, and the magnetic field that described coil 28 produces and magnet 27 act on pushing away and makes described movable plate 23 drive sliding bar 24 to slide along optical axis on described rolling surface, so make described to focus lens 27 along axis movement.
In first embodiment of focusing structural 20 of the present invention, described movable plate 23 to be made and self elastic deformation can not occur for plastic material.The surface of each sliding bar 24 described described movable plate 23 is dorsad axially arranged with docking groove 241 along described movable plate 23, the corresponding described slot rolling 261 of each docking groove 241.Described docking groove 241 supports with described rolling surface.Described slot rolling 261 is V-arrangement with the cross section of described docking groove 241, and described ball 25 is contained in described slot rolling 261 with in the common space formed of described docking groove 241, and described slot rolling 261 and described docking groove 241 respectively accommodate the volume of described spin 25 half.Described spin 25 is contained in the space that described slot rolling 261 is formed jointly with described docking groove 241, all comparatively stable when making the slip of described sliding bar 24 and support motionless.
Described pedestal 21 is annular tubular, and it is provided with the through inner chamber in two ends, and described movable part 22 is contained in described inner chamber.Described movable plate 23 is made for plastic material.Described magnet 27 is embedded on described movable plate 23 or is fixed on the surface of movable plate 23.The cross section that described chute 26 is parallel to pedestal 21 axis is T-shaped, and described chute 26 is located on the internal perisporium of described pedestal 21, and described slot rolling 261 is in the middle part of described pedestal 21.Described sliding bar 24 slides to be loaded in described chute 26 and is limited in described pedestal 21 by described movable plate 23.
Focusing structural 20 of the present invention another implement in, with described first embodiment unlike: described docking groove 241 omits.The volume that each spin 25 described is greater than 1/2nd is accommodated by described slot rolling 261, and surface and the described rolling surface of described sliding bar 24 support.Described several spin 25 is parallel to and is arranged in described slot rolling 261 optical axis of focus lens 17.
Refer to Fig. 3, the present invention also provides a kind of camera lens module 10, described camera lens module 10 comprises lens barrel 12, to the focusing structural 20 described in focus lens 17, main lens group 18 and above-mentioned two embodiments, described main lens group 18 and focusing structural 20 are contained in described lens barrel 12 and interval and arrange, and described coil 28 is fixed on main lens group 18 periphery in described lens barrel 12.
In the present embodiment, described lens barrel 12 is plastic parts.Described lens barrel 12 is the hood-like cylinder of one end open, offers the camera aperture (not shown) relative with described main lens group 18 in the middle part of its blind end.Described pedestal 21 is loaded on described lens barrel 12 inner peripheral surface near one end of opening.Or described pedestal 21 is a part for described lens barrel 12, that is, described chute 26 is directly offered with in described lens barrel 12.
The relatively described camera aperture of size of each lens optic of described main lens group 18 subtracts increase successively.Described main lens group 18 has three lens, and described is a slice eyeglass to focus lens, and described to focus lens 17 relative to described main lens group 18 closer to described image sensor 16.Described coil 24 is relative with magnet 23 interval, and described coil 24 relatively and magnet 23 further from described image sensor 16.Wherein, described main lens group 18 and described lens combination focus lens 17 being formed jointly to described camera lens module.
Selectable, described camera lens module 10 also comprises disc-shaped base 19, is equiped with optical filter 191 in the middle part of described base, and described lens barrel 12 covers on described base 19.Described optical filter 191 is relative with to focus lens and coaxially arrange focus lens 17, main lens group 18 with described.In the present embodiment, described lens barrel 12 and described base 19 are by colloid bonding method or be threaded fixing.Described camera lens module 10 also comprises displacement sensor 14, and described displacement sensor 14 is fixed on described base 19 edge and towards described movable plate 23, for the intensity in inductive coil 28 magnetic field, and then accurately locates the slide displacement of described movable plate 23.
The present invention also provides a kind of camera module 100, described camera module 100 comprises wiring board 15, described camera lens module 20 and is loaded on the image sensor 16 of wiring board 15, described base 19 is loaded between described lens barrel 12 and described circuit board 15, describedly affect sensor 16 and described optical filter 191 interval is oppositely arranged, described to focus lens 17 relative to described main lens group 18 closer to described optical filter 191.Described circuit board 15 provides electric current and controllable current size for coil 28.The described sensor 16 that affects is loaded on PCB surface and is electrically connected with wiring board 15, for sensing through described main lens group 18 and the described light to focus lens 17, and produces corresponding signal of video signal.
Focusing structural 20 of the present invention is when camera module is taken, electric current and magnet 23 is provided to act on by giving coil 24, push away and make described movable plate 23 drive sliding bar 24 to move along described rolling surface, described ball 25 because with the friction force of described sliding bar 24 and own rotation, and then promote described sliding bar generation displacement, drive described focus lens 17 along axis movement, and then realize described main lens group 18 and focusing object focus lens 17 being formed to optical system, avoid adaptive torsion problem between camera lens and motor, realize steadily focusing, and it is described to focus lens and movable plate integrated setting, mobile focusing is realized by ball, structure is simple, be convenient to assembling also can not produce friction dust and pollute camera lens module, ensure camera lens module quality.
Above-described embodiment, does not form the restriction to this technical scheme protection domain.The amendment done within any spirit at above-mentioned embodiment and principle, equivalently to replace and improvement etc., within the protection domain that all should be included in this technical scheme.

Claims (10)

1. a focusing structural, for driving in camera lens module, focus lens is focused, it is characterized in that: described focusing structural comprises pedestal, movable part, magnet and be positioned at the coil of susceptor edges, described movable part comprises movable plate, several ball, mounting hole is provided with in the middle part of described movable plate, described movable plate outer peripheral edges are interval with at least two sliding bars, described at least two sliding bars arrange perpendicular to described movable plate and the opposite end of each sliding bar described extends away from described movable plate, on described pedestal, corresponding described sliding bar is provided with chute, described chute inwall is arranged with slot rolling, described ball is arranged in order the rolling surface also being formed in described slot rolling and protrude described slot rolling, describedly focus lens is accommodated and is fixed in described mounting hole, described magnet is located on described movable plate around described mounting hole periphery, described movable plate is contained in described pedestal, described sliding bar slides to be loaded in described chute and supports with rolling surface, and described movable plate is positioned in pedestal by the friction force of described sliding bar and described ball, described coil is relative with described magnet, and the magnetic field that described coil produces and magnet effect push away and make described movable plate drive sliding bar to slide along optical axis on described rolling surface, so make described to focus lens along axis movement.
2. focusing structural as claimed in claim 1, is characterized in that, the volume that each spin described is greater than 1/2nd is accommodated by described slot rolling.
3. focusing structural as claimed in claim 1, is characterized in that, the surface of each sliding bar described described movable plate dorsad is axially provided with docking groove relative to described slot rolling along described movable plate, and described docking groove and described rolling surface support.
4. focusing structural as claimed in claim 3, it is characterized in that, the cross section of described slot rolling and described docking groove is V-arrangement, and described ball is in the space that described slot rolling and described docking groove are formed jointly and described slot rolling and described docking groove respectively accommodate the volume of described spin half.
5. the focusing structural as described in claim 2 or 4, is characterized in that, described pedestal is the tubular of annular, and the cross section that described chute is parallel to pedestal axis is T-shaped, and described chute is located on the internal perisporium of described pedestal, and described slot rolling is in the middle part of described pedestal.
6. a camera lens module, it is characterized in that, described camera lens module comprises lens barrel, to the focusing structural described in focus lens, main lens group and any one of claim 1-5, described is a slice eyeglass to focus lens, described main lens group and focusing structural are contained in described lens barrel and interval and arrange, and described coil is fixed on main lens group periphery in described lens barrel.
7. focusing structural as claimed in claim 6, it is characterized in that, described camera lens module also comprises base, is loaded on the optical filter of base, and described lens barrel covers on described base, is shownly oppositely arranged focus lens and the coaxial and interval of described optical filter.
8. camera lens module as claimed in claim 7, it is characterized in that, described camera lens module also comprises displacement sensor, and described displacement sensor is fixed on described base edge and towards described movable plate.
9. camera lens module as claimed in claim 7, it is characterized in that, described lens barrel is the cover body of one end open, offers the camera aperture relative with described main lens group in the middle part of lens barrel blind end, described pedestal be described lens barrel a part and near openend.
10. a camera module, it is characterized in that, described camera module comprises wiring board, camera lens module as described in any one of claim 6-9 and is loaded on the image sensor of wiring board, describedly affect sensor and described optical filter interval is oppositely arranged, described to focus lens relative to described main lens group closer to described optical filter.
CN201410497633.8A 2014-09-25 2014-09-25 Focusing structure, lens module and camera module provided with lens module Pending CN104280854A (en)

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CN107015419A (en) * 2016-01-27 2017-08-04 三星电机株式会社 Camera model
WO2018076141A1 (en) * 2016-10-24 2018-05-03 江西森阳科技股份有限公司 Camera module
CN108562991A (en) * 2018-04-23 2018-09-21 福建浩蓝光电有限公司 One kind carrying focus adjustment formula camera lens module
CN109960090A (en) * 2017-12-25 2019-07-02 南昌欧菲光电技术有限公司 Mould group of focusing and electronic device

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CN204203536U (en) * 2014-09-25 2015-03-11 南昌欧菲光电技术有限公司 Focusing structural, camera lens module and there is the camera module of described camera lens module

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CN107015419A (en) * 2016-01-27 2017-08-04 三星电机株式会社 Camera model
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CN108562991A (en) * 2018-04-23 2018-09-21 福建浩蓝光电有限公司 One kind carrying focus adjustment formula camera lens module

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