CN104678679A - Shooting device and auto-focusing module thereof - Google Patents
Shooting device and auto-focusing module thereof Download PDFInfo
- Publication number
- CN104678679A CN104678679A CN201510145494.7A CN201510145494A CN104678679A CN 104678679 A CN104678679 A CN 104678679A CN 201510145494 A CN201510145494 A CN 201510145494A CN 104678679 A CN104678679 A CN 104678679A
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- CN
- China
- Prior art keywords
- lens barrel
- auto
- module
- focusing
- cylinder
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- 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.)
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Classifications
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- 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
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/28—Systems for automatic generation of focusing signals
- G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
Abstract
The invention discloses an auto-focusing module of a shooting device. The auto-focusing module comprises a module assembly cylinder, a lens cone and a motor for driving the lens cone to move, wherein the motor is a two-way driving motor, the lens cone is built in the module assembly cylinder, the transverse center line of the lens cone is in superposition with the transverse center line of the module assembly cylinder, and the motion direction of the lens cone is parallel to the axial direction of the lens cone. According to the auto-focusing module of the shooting device, disclosed by the invention, other parts are mounted through the module assembly cylinder, the lens cone is arranged in the module assembly cylinder, and the transverse center line of the lens cone is in superposition with the transverse center line of the module assembly cylinder, namely that the lens cone is positioned at the center of the module assembly cylinder in the axial direction. In addition, the motor is the two-way driving motor, and the lens cone can be driven to move from two directions. During auto-focusing, as the initial position of the lens cone is arranged at the center of the module assembly cylinder, two-way search can be realized under the drive of the motor, and auto-focusing can be fast completed.
Description
Technical field
The present invention relates to photoelectricity and technical field of semiconductors, particularly a kind of auto-focusing module of capture apparatus.The invention still further relates to a kind of capture apparatus comprising above-mentioned auto-focusing module.
Background technology
Along with the development of Chinese industrial technology, new high-tech product emerges in an endless stream, and the requirement of people to electronic product is also more and more ultimate attainment simultaneously.
The camera of such as mobile phone, what on current mobile phone, auto-focusing module technology generally adopted is climbing algorithm.Please refer to Fig. 1, Fig. 1 is auto-focusing modular structure schematic diagram of the prior art.Namely from distant view, one direction searches close shot (general about 10cm), and usual shooting one clearly scenery spends the time of about 1s approximately.Taking lens barrel each time all will in strict accordance with climbing algorithm unidirectional motion once, until search the most clear camera site.
So visible, although achieved the Autofocus Technology of capture apparatus more easily by climbing algorithmic technique, but owing to having taken major part time waste on focus search process at every turn, focusing speed is slower, therefore need the occasion of capturing fast then possibly cannot take clear photograph at some, be unfavorable for the universal development of capture apparatus.In addition, the auto-focusing module of existing capture apparatus is affected by gravity problem in order to overcome at the in particular cases issuable camera lens of shooting downwards, and need the predeformation first overcoming inner elastic piece structure during camera lens auto-focusing, therefore power consumption is higher.
Summary of the invention
The object of this invention is to provide a kind of auto-focusing module of capture apparatus, capture apparatus can be made to complete auto-focusing rapidly, even if also can clear pictures be shot when capturing fast.Another object of the present invention is to provide a kind of capture apparatus comprising above-mentioned auto-focusing module.
For solving the problems of the technologies described above, the invention provides a kind of auto-focusing module of capture apparatus, comprise module assembling cylinder, lens barrel and for driving the motor of described lens barrel movement, described motor is two-way drive motor, described lens barrel is built in described module assembling cylinder movably, and the cross central line that the cross central line of described lens barrel and described module assemble cylinder overlaps, and the direction of motion of described lens barrel is parallel to the axis of self.
Preferably, the external diameter of described lens barrel is equal with the internal diameter that described module assembles cylinder.
Preferably, the inwall of described module assembling cylinder is provided with the slip grooved rail matched with the outer wall of described lens barrel.
Preferably, the top of described module assembling cylinder and bottom end are respectively provided with the limited block of the extreme position identifying described lens barrel bidirectional-movement.
Preferably, described module assembling cylinder is also provided with the range sensor for detecting described lens barrel positional information.
Preferably, described module assembling cylinder is also provided with the speed pickup for detecting described lens barrel movable information.
The present invention also provides a kind of capture apparatus, and comprise fuselage and be arranged at the auto-focusing module in described fuselage, wherein, described auto-focusing module is the auto-focusing module described in above-mentioned any one.
Preferably, described capture apparatus is specially mobile phone camera.
The auto-focusing module of capture apparatus provided by the present invention, comprises module assembling cylinder, lens barrel and motor.Wherein, module assembling cylinder is mainly used in installing and carrying lens barrel and all the other parts, and motor is mainly used in driving lens barrel to make it move, importantly, motor in the present invention is two-way drive motor, namely lens barrel can be driven along two contrary direction rectilinear motions, and this Motion Parallel is in the axial direction of lens barrel self.In addition, lens barrel is arranged in module assembling cylinder, and the center line that the cross central line of lens barrel and module assemble cylinder overlaps.So, the initial makeup location of lens barrel in the axial direction, namely assembles the centre position of cylinder at module.Size due to lens barrel is general all little than module assembling cylinder, therefore when the initial position of lens barrel is when centre position (i.e. the scape position in imaging) of module assembling cylinder, between the top bottom that edge and module assemble cylinder up and down of lens barrel, all there is one section of equal gap.Then, under the drive of two-way drive motor, lens barrel just can be driven arbitrarily to move toward both direction, can auto-focusing be realized by the flexible of lens barrel.Importantly, in its process, lens barrel carries out bidirectional research scape position from imaging, when detecting that the sharpness on a direction rises, then continues direction and moves unchangeably; And when detecting that the sharpness on a direction declines, then motor changes driving direction at once, make lens barrel oppositely movement.So repeatedly adjust the position of lens barrel, finally make lens barrel search optimum photographing position, complete auto-focusing, and take most clear photograph.Therefore, the auto-focusing module of capture apparatus provided by the present invention, by carrying out bidirectional research scape position from imaging, compared to climbing algorithmic technique of the prior art (namely from imaging distant view place, unidirectional gradually toward the search of imaging close shot place), average auto-focusing speed can double in theory, completes auto-focusing fast, even if people can be made also can to shoot clear photograph when capturing fast.
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 embodiments of the 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 the accompanying drawing provided.
Fig. 1 is auto-focusing modular structure schematic diagram of the prior art;
Fig. 2 is the one-piece construction schematic diagram of the first embodiment provided by the present invention;
Fig. 3 is the one-piece construction schematic diagram of the second embodiment provided by the present invention.
Wherein, in Fig. 2:
Module assembling cylinder-1, slip grooved rail-101, lens barrel-2, motor-3, limited block-4.
In Fig. 3:
Range sensor-5, speed pickup-6.
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.
Please refer to Fig. 2, Fig. 2 is the one-piece construction schematic diagram of the first embodiment provided by the present invention.
In the first embodiment provided by the present invention, the auto-focusing module of capture apparatus mainly comprises module assembling cylinder 1, lens barrel 2 and motor 3.
Wherein, module assembling cylinder 1 is the parts for installing and carry the whole parts in whole module, and generally have housing and internal cavities, in tubular, such as cylinder or square tube can.
Lens barrel 2 is core components of auto-focusing module, generally lens barrel 2 inside is provided with eyeglass miscellaneous.It is inner that lens barrel 2 is arranged on module assembling cylinder 1, due to lens barrel 2 and module assembling cylinder 1 both cartridges, axially parallel to each other when therefore both install---can certainly coaxially install, if same disalignment is installed feasible too.The Main Function of eyeglass before taking pictures of lens barrel 2 inside is focusing, searches for the most articulation point of scenery in other words---when just opening capture apparatus, in lens barrel 2, imaging is unsharp often, this is because become image focus not align.For this reason, lens barrel 2 needs to be arranged on module assembling cylinder 1 inside movably.Importantly, the auto-focusing module in the present invention, the initial makeup location of lens barrel 2 in module assembling cylinder 1 assembles cylinder 1 " center " at module---and namely the cross central line of lens barrel 2 overlaps with the cross central line that module assembles cylinder 1.That is, there is a segment distance a in the top that cylinder 1 is assembled to module in the top of lens barrel 2, and the bottom that cylinder 1 is assembled to module in the bottom of lens barrel 2 simultaneously also exists a segment distance b, and this distance a is equal with distance b.This distance a and distance b are that lens barrel 2 assembles in cylinder 1 at module in fact, the amount of moving freely in auto-focus process.Certainly, when lens barrel 2 moves in module assembling cylinder 1, its moving direction is parallel to self axis, is similar to axial stretching motion.
The mobile power source of lens barrel 2 is motors 3, and the motor 3 in capture apparatus is a kind of micromotors, and its Main Function drives lens barrel 2 to move.Importantly, the motor 3 in the present invention is two-way drive motor, freely can carry out forward or reverse, and lens barrel 2 so just can be driven smoothly to carry out motion of stretching or contract.Simultaneously because lens barrel 2 is the centers (referring to axial centre) being arranged on module assembling cylinder 1, so lens barrel 2 just can move forward and backward under the driving of motor 3, realize two-way focus search.
In sum, the auto-focusing module of capture apparatus provided by the present invention, by can the motor 3 of bi-directional drive be with moving lens barrel 2 to move, installation initial position due to lens barrel 2 is that therefore lens barrel 2 can assemble in cylinder 1 at module and freely move forward and backward in the axial centre position of module assembling cylinder 1.When operating personnel have just opened auto-focusing module, first lens barrel 2 has been in scape position in imaging, then carries out bidirectional research (focusing).Concrete grammar can be: lens barrel 2 attempts search along direction, if sense, image definition rises, then continue to search for along this direction, until find most articulation point, namely completes auto-focusing; If lens barrel 2 therefrom scape position starts to find that after the search of direction readability starts to decline, so then get started reverse search, same until find most articulation point, complete auto-focusing.So repeatedly adjust the position of lens barrel 2, finally make lens barrel 2 search optimum photographing position, take most clear photograph.
The auto-focusing module of capture apparatus provided by the present invention, what carry out due to lens barrel 2 is that therefrom scape position starts master slave servo control, compared to the algorithm of climbing from distant view of prior art, auto-focusing speed improves a height in theory, significantly shorten auto-focusing required time, complete auto-focusing fast, even if make people also clear photograph can be shot when capturing fast.In addition, because this auto-focusing module has abandoned predeformation elastic piece structure of the prior art, therefore when motor 3 is with moving lens barrel 2 to carry out way moving, do not need the deformation quantity acting additionally overcoming shell fragment, therefore power consumption is lower, and practicality is stronger.
In order to optimize the installation site of lens barrel 2 in module assembling cylinder 1, preferably, the external diameter of lens barrel 2 can be made equal with the internal diameter that module assembles cylinder 1.Setting like this, the outer wall of lens barrel 2 just assembles the inwall close contact of cylinder 1 with module, when both carry out relative motion, the horizontal relative position that lens barrel 2 and module assemble between cylinder 1 remains unchanged, and avoids image fault.Certainly, if the external diameter of lens barrel 2 be less than module assembling cylinder 1 internal diameter feasible too.
On this basis, the present embodiment is also provided with slip grooved rail 101 on the inwall of module assembling cylinder 1.This slip grooved rail 101 is mainly used in the relative motion between module assembling cylinder 1 and lens barrel 2, and after having set up slip grooved rail 101, lens barrel 2 and module assemble kinetic stability between cylinder 1 and accuracy and obtain and strengthen to a certain extent, are conducive to exact focus.
In addition, because the free travel (maximum focusing move distance) of lens barrel 2 is certain, therefore lens barrel 2 and module assemble end play unnecessary between cylinder 1 without too large meaning.For this reason, the present embodiment is respectively provided with limited block 4 on the top of module assembling cylinder 1 and bottom end.This limited block 4 can identify the extreme position of lens barrel 2 bidirectional-movement, also prevents the abnormal movement of some in particular cases lens barrel 2 simultaneously.
The present embodiment also provides a kind of capture apparatus, and comprise fuselage and be arranged on the auto-focusing module in fuselage, wherein, this auto-focusing module is identical with foregoing teachings, repeats no more herein.It should be noted that, capture apparatus provided by the present invention, is adapted to mobile phone camera especially, but equally also can be applied to Vehicle-carrying type steel camera or security type camera.
Please refer to Fig. 3, Fig. 3 is the one-piece construction schematic diagram of the second embodiment provided by the present invention.
The second embodiment provided by the present invention, the basis of the first embodiment is improved, have for: set up range sensor 5 and speed pickup 6.The remainder of the auto-focusing module of the capture apparatus that the present embodiment provides is identical with foregoing teachings, repeats no more herein.
In order to improve the accuracy of the auto-focusing of the auto-focusing module of capture apparatus, the present embodiment is provided with range sensor 5 on module assembling cylinder 1, this range sensor 5 can detect the positional information of lens barrel 2 in real time, thus capture apparatus main control chip can be made to know the relative movement distance of lens barrel 2 relative to module assembling cylinder 1, thus locate focusing position more accurately.
Moreover, the present embodiment is also provided with speed pickup 6 on module assembling cylinder 1, this speed pickup 6 can detect the translational speed of lens barrel 2 in module assembling cylinder 1 in real time, thus capture apparatus main control chip can be made to know the translational speed of lens barrel 2, and then control its speed, the pick up speed when larger row journey, shortens focusing time; When less stroke, slow down focusing speed, make focusing position more accurate.
The present embodiment also provides a kind of capture apparatus, and comprise fuselage and be arranged on the auto-focusing module in fuselage, wherein, this auto-focusing module is identical with foregoing teachings, repeats no more herein.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1. the auto-focusing module of a capture apparatus, comprise module assembling cylinder (1), lens barrel (2) and for driving the motor (3) of described lens barrel (2) movement, it is characterized in that, described motor (1) is two-way drive motor, described lens barrel (2) is built in described module assembling cylinder (1) movably, and the cross central line that the cross central line of described lens barrel (2) and described module assemble cylinder (1) overlaps, and the direction of motion of described lens barrel (2) is parallel to the axis of self.
2. auto-focusing module according to claim 1, is characterized in that, the internal diameter that external diameter and the described module of described lens barrel (2) assemble cylinder (1) is equal.
3. auto-focusing module according to claim 2, is characterized in that, the inwall of described module assembling cylinder (1) is provided with the slip grooved rail (101) matched with the outer wall of described lens barrel (2).
4. auto-focusing module according to claim 1, is characterized in that, the top of described module assembling cylinder (1) and bottom end are respectively provided with the limited block (4) of the extreme position of mark described lens barrel (2) bidirectional-movement.
5. auto-focusing module according to claim 1, is characterized in that, described module assembling cylinder (1) is also provided with the range sensor (5) for detecting described lens barrel (2) positional information.
6. auto-focusing module according to claim 1, is characterized in that, described module assembling cylinder (1) is also provided with the speed pickup (6) for detecting described lens barrel (2) movable information.
7. a capture apparatus, comprise fuselage and be arranged at the auto-focusing module in described fuselage, it is characterized in that, described auto-focusing module is the auto-focusing module described in any one of claim 1-6.
8. capture apparatus according to claim 7, is characterized in that, described capture apparatus is specially mobile phone camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145494.7A CN104678679A (en) | 2015-03-30 | 2015-03-30 | Shooting device and auto-focusing module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510145494.7A CN104678679A (en) | 2015-03-30 | 2015-03-30 | Shooting device and auto-focusing module thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104678679A true CN104678679A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510145494.7A Pending CN104678679A (en) | 2015-03-30 | 2015-03-30 | Shooting device and auto-focusing module thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111796471A (en) * | 2019-04-09 | 2020-10-20 | 格科微电子（上海）有限公司 | Auto-focusing motor and assembling method thereof |
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| JPH06180421A (en) * | 1992-12-15 | 1994-06-28 | Hitachi Ltd | Automatic focusing device |
| CN1786806A (en) * | 2004-12-11 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Automatic focusing lens module |
| CN101078857A (en) * | 2006-05-23 | 2007-11-28 | 普立尔科技股份有限公司 | Real-time automatic focusing method |
| CN101089719A (en) * | 2006-06-13 | 2007-12-19 | 普立尔科技股份有限公司 | Focusing method for image pick-up device |
| CN101098407A (en) * | 2006-06-30 | 2008-01-02 | 索尼株式会社 | Auto-focus apparatus, image capture apparatus, and auto-focus method |
| US20080151098A1 (en) * | 2006-12-20 | 2008-06-26 | Hon Hai Precision Industry Co., Ltd. | Camera module |
| CN104321699A (en) * | 2012-05-17 | 2015-01-28 | Lg伊诺特有限公司 | Camera module and method for auto focusing the same |
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2015
- 2015-03-30 CN CN201510145494.7A patent/CN104678679A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06180421A (en) * | 1992-12-15 | 1994-06-28 | Hitachi Ltd | Automatic focusing device |
| CN1786806A (en) * | 2004-12-11 | 2006-06-14 | 鸿富锦精密工业（深圳）有限公司 | Automatic focusing lens module |
| CN101078857A (en) * | 2006-05-23 | 2007-11-28 | 普立尔科技股份有限公司 | Real-time automatic focusing method |
| CN101089719A (en) * | 2006-06-13 | 2007-12-19 | 普立尔科技股份有限公司 | Focusing method for image pick-up device |
| CN101098407A (en) * | 2006-06-30 | 2008-01-02 | 索尼株式会社 | Auto-focus apparatus, image capture apparatus, and auto-focus method |
| US20080151098A1 (en) * | 2006-12-20 | 2008-06-26 | Hon Hai Precision Industry Co., Ltd. | Camera module |
| CN104321699A (en) * | 2012-05-17 | 2015-01-28 | Lg伊诺特有限公司 | Camera module and method for auto focusing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111796471A (en) * | 2019-04-09 | 2020-10-20 | 格科微电子（上海）有限公司 | Auto-focusing motor and assembling method thereof |
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Application publication date: 20150603 |
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