CN104678678A - Shooting device and auto-focusing module thereof - Google Patents
Shooting device and auto-focusing module thereof Download PDFInfo
- Publication number
- CN104678678A CN104678678A CN201510144631.5A CN201510144631A CN104678678A CN 104678678 A CN104678678 A CN 104678678A CN 201510144631 A CN201510144631 A CN 201510144631A CN 104678678 A CN104678678 A CN 104678678A
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- CN
- China
- Prior art keywords
- auto
- module
- focusing
- lens barrel
- assembling cylinder
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Classifications
-
- 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
Abstract
The invention discloses an auto-focusing module of a shooting device. The auto-focusing module comprises a lens cone and a module assembly cylinder, wherein the lens cone is arranged in the module assembly cylinder and fixed, the axial direction of the lens cone and the axial direction of the module assembly cylinder are parallel to each other, and the transverse center line of the lens cone is in superposition with the transverse center line of the module assembly cylinder; and a linear motion mechanism for driving the module assembly cylinder to move is arranged on the outer wall of the module assembly cylinder. According to the auto-focusing module of the shooting device, disclosed by the invention, the initial mounting position of the lens cone in the module assembly cylinder is an imaging medium shot position, and then under the drive of the linear motion mechanism, the module assembly cylinder and the lens cone can synchronously perform two-way motion to perform two-way searching and focusing. In theory, compared with the auto-focusing module in the prior art, the focusing speed of the auto-focusing module is doubled and the time required for completing shooting can be reduced by one half. The invention further discloses a shooting device comprising the auto-focusing module, and the benefits are as described above.
Description
Technical field
The present invention relates to photoelectricity and technical field of semiconductors, particularly the auto-focusing module that sets of a kind of shooting.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-focus process rapidly, reduce auto-focusing required time, shorten required time of taking pictures.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 lens barrel, module assembling cylinder, it is interior and fixing that described lens barrel is arranged at described module assembling cylinder, and the axis that the axis of described lens barrel and described module assemble cylinder is parallel to each other, and the cross central line that the cross central line of described lens barrel and described module assemble cylinder overlaps; The outer wall of described module assembling cylinder is provided with the straight-line motion mechanism for driving displacement.
Preferably, described straight-line motion mechanism comprises magnet, solenoid and bidirectional current chip, described magnet is close to the outer wall of described module assembling cylinder, and described solenoid and described magnet are close to and just right, and the output terminal of described bidirectional current chip is connected with described solenoid.
Preferably, also comprise flat installation portion and metal baffle, described flat installation portion is arranged on the outer wall of described module assembling cylinder, and described magnet is close to the surface of described flat installation portion; Described metal baffle is close to described solenoid, and with solenoidal both sides described in described magnet office.
Preferably, also comprise ball, the both sides of described metal baffle are provided with column-shaped trench, and the length direction of described column-shaped trench is parallel to the axis of described module assembling cylinder, and described ball is arranged in described column-shaped trench.
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, mainly comprises lens barrel, module assembling cylinder and straight-line motion mechanism.Wherein, lens barrel is mainly used in carrying out auto-focusing imaging, and it is inner that it is arranged on module assembling cylinder, and is fixed on module assembling cylinder, therefore, it is possible to move along with the motion of module assembling cylinder.At the set-up mode of module assembling cylinder, lens barrel needs to ensure that the axial direction of lens barrel and module assemble the axial direction of cylinder parallel to each other, and the cross central line that the cross central line of lens barrel and module assemble cylinder overlaps mutually.If overlook this module assembling cylinder, then can determine the top of the top of lens barrel to module assembling cylinder, and the bottom that cylinder is assembled to module in the bottom of lens barrel all exists a segment distance (this distance is also the free movement range of lens barrel), and this two segment distance is all equal.In addition, straight-line motion mechanism is arranged on the outer wall of module assembling cylinder, is mainly used in driving module assembling cylinder to move, and because the direction of motion of straight-line motion mechanism is free to go forward or back out, therefore, it is possible to drive module assembling cylinder advance or retreat, carries out bidirectional-movement.The auto-focusing module of capture apparatus provided by the present invention, due in an initial condition, the position of lens barrel in module assembling cylinder ensure that axially parallel to each other, and cross central line overlaps mutually, is therefore in fact in scape position in imaging.Then, under the drive of straight-line motion mechanism, module just can be driven to assemble cylinder and arbitrarily to move toward both direction, while movement, be with moving lens barrel to be synchronized with the movement, and 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 straight-line motion mechanism 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, reduce auto-focusing required time, shorten required time of taking pictures.
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 the one-piece construction explosive view of the first embodiment provided by the present invention;
Fig. 2 is the one-piece construction explosive view of the second embodiment provided by the present invention.
Wherein, in Fig. 1:
Lens barrel-1, module assembling cylinder-2, flat installation portion-201, straight-line motion mechanism-3, magnet-301, solenoid-302, bidirectional current chip-303, metal baffle-4, column-shaped trench-401, ball-5.
In Fig. 2:
Range sensor-6, speed pickup-7.
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. 1, Fig. 1 is the one-piece construction explosive view 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 lens barrel 1, module assembling cylinder 2 and straight-line motion mechanism 3.
Wherein, module assembling cylinder 2 is mainly used in installing and band moving lens barrel 1, and have outer wall and internal cavities, in tubular, such as cylinder or square tube can.Lens barrel 1 is just arranged in this internal cavities, and outer wall is mainly used in installing straight-line motion mechanism 3 and all the other parts, and this will discuss in detail in subsequent content.
Lens barrel 1 is the core component of auto-focusing module, generally lens barrel 1 inside is provided with eyeglass miscellaneous.It is inner and fixing that lens barrel 1 is arranged on module assembling cylinder 2, due to lens barrel 1 and module assembling cylinder 2 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 1 inside is focusing, searches for the most articulation point of scenery in other words---when just opening capture apparatus, in lens barrel 1, imaging is unsharp often, this is because become image focus not align.For this reason, lens barrel 1 needs stretching motion to realize auto-focusing.Importantly, the auto-focusing module in the present invention, the initial makeup location of lens barrel 1 in module assembling cylinder 2 assembles cylinder 2 " center " at module---and namely the cross central line of lens barrel 1 overlaps with the cross central line that module assembles cylinder 2.That is, there is a segment distance a in the top that cylinder 2 is assembled to module in the top of lens barrel 1, and the bottom that cylinder 2 is assembled to module in the bottom of lens barrel 1 simultaneously also exists a segment distance b, and this distance a is equal with distance b.
Mention above, often imaging is unintelligible when module assembles the initial position in cylinder 2 for lens barrel 1, needs stretching motion to regulate focusing position.For this reason, the present embodiment is provided with straight-line motion mechanism 3 on the outer wall of module assembling cylinder 2.This straight-line motion mechanism 3 moves for Direct driver module assembling cylinder 2, to be arranged in module assembling cylinder 2 due to lens barrel 1 and to be fixedly connected with it, therefore straight-line motion mechanism 3 just can drive lens barrel 1 to move indirectly---certainly, because the auto-focusing of lens barrel 1 needs, therefore the direction of motion of straight-line motion mechanism 3 is parallel with the axial direction of lens barrel 1.
In sum, the auto-focusing module of capture apparatus provided by the present invention, drives module to assemble cylinder 2 by straight-line motion mechanism and moves, and then be with moving lens barrel 1 to be synchronized with the movement.Because the initial makeup location of lens barrel 1 in module assembling cylinder 2 is its axial centre position, therefore when operating personnel have just opened auto-focusing module, first lens barrel 1 is in scape position in imaging, then carries out bidirectional research (focusing).Concrete grammar can be: module assembling cylinder 2 is with moving lens barrel 1 to attempt 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 module assembling cylinder 2 is with moving lens barrel 1 therefrom to start to find that after the search of direction readability starts to decline in scape position, so then get started reverse search, same until find most articulation point, complete auto-focusing.So repeatedly adjust by straight-line motion mechanism 3 position that module assembles cylinder 2, finally make lens barrel 1 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 1 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, decrease auto-focusing required time, overall reduction required time of taking pictures.In addition, because this auto-focusing module has abandoned predeformation elastic piece structure of the prior art, therefore when straight-line motion mechanism 3 drives module assembling cylinder 2 to carry out way moving, only need the gravity overcoming self, do not need the deformation quantity acting additionally overcoming shell fragment, therefore power consumption is lower, and practicality is stronger.
In an advantageous embodiment, straight-line motion mechanism 3 comprises magnet 301, solenoid 302 and bidirectional current chip 303.Wherein, magnet 301 is mainly for generation of magnetic field, and this magnet 301 is arranged on the outer wall being close to and being arranged on module assembling cylinder 2---and because module assembling cylinder 2 is also generally metallic material shell, therefore magnet 301 can be attached to the outer wall of module assembling cylinder 2 securely.Solenoid 302 and magnet 301 are close to and just right, when solenoid 302 has electric current to flow through, just define energization solenoid, and utilize the electromagnetic induction phenomenon of energization solenoid and magnet 301 that module just can be driven to assemble cylinder 2 rectilinear motion (thrust or pulling force can make module assemble cylinder 2 bidirectional-movement).And module assembling cylinder 2 will be made to carry out bidirectional-movement, direction of current then on solenoid 302 is necessary for two-way, for this reason, bidirectional current chip 303 provides electric current for solenoid 302, namely the output terminal of bidirectional current chip 303 is connected with solenoid 302, then just can judge to export forward current or backward current according to the imaging clearly degree of lens barrel 1.
It should be noted that, the mechanism form of straight-line motion mechanism 3 is a lot, be not limited in above-mentioned magnet 301, mechanism that solenoid 302 matches with bidirectional current chip 303, all the other such as rack-and-pinion are worked in coordination, utilize tooth bar to assemble cylinder 2 to drive module, and then can adopt too with the version that moving lens barrel 1 moves.
In addition, in order to optimize the parts mount mechanism on module assembling cylinder 2, the present embodiment is also provided with flat installation portion 201 on the outer wall of module assembling cylinder 2.This flat installation portion 201, as the term suggests bottom is plane, for installing all the other parts---magnet 301 is close to the surface of this flat installation portion 201.There is flat installation portion 201, just can improve the installation stability of magnet 301 on module assembling cylinder 2.Further, the present embodiment has also set up metal baffle 4, and this metal baffle 4 is close to solenoid 302, and is in the both sides of solenoid 302 with magnet 301 points.So, be close to flat installation portion 201 outside module assembling cylinder 2, magnet 301 is close on flat installation portion 201, is then solenoid 302 on magnet 301, is finally all pressed on the outer wall of module assembling cylinder 2 by aforementioned 3 parts by metal baffle 4 again.Setting like this, the structure of auto-focusing module is optimized, more compact small and exquisite, is more easy to carry.
Further, in order to reduce the power consumption of auto-focusing module, the present embodiment is also provided with column-shaped trench 401 in the both sides of metal baffle 4, then in this column-shaped trench 401, is provided with some balls 5.Length direction due to this column-shaped trench 401 is parallel to the axial direction of module assembling cylinder 2, and the parts such as flat installation portion 201, magnet 301 and solenoid 302 are pressed on the outer wall of module assembling cylinder 2 by metal baffle 4, therefore when module assembling cylinder 2 starts axial linear movement, the ball 5 be arranged in column-shaped trench 401 directly will contact with flat installation portion 201, and produces rolling relatively.So, due to the existence of column-shaped trench 401 and ball 5, module assembling cylinder 2 is when moving, and be improved to rolling friction by former sliding friction, frictional resistance is less, reduce further the power consumption of auto-focusing module.
The present invention also provides a kind of capture apparatus, comprises fuselage and is arranged on the auto-focusing module in fuselage, and wherein, this auto-focusing module is identical with foregoing teachings, repeats no more herein.
It should be noted that, capture apparatus described herein refers in particular to mobile phone camera.Certainly, the present invention is applicable to remaining capture apparatus too, such as security type picture pick-up device or Vehicle-carrying type steel picture pick-up device etc.
Please refer to Fig. 2, Fig. 2 is the one-piece construction explosive view 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, is specially: set up range sensor 6 and speed pickup 7.The remainder of the auto-focusing module of capture apparatus provided by the present invention is identical with foregoing teachings, repeats no more herein.
In the second embodiment provided by the present invention, 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 6 on straight-line motion mechanism 3, this range sensor 6 can detect the positional information of module assembling cylinder 2 or lens barrel 1 in real time, thus capture apparatus main control chip can be made to know the displacement of module assembling cylinder 2 or lens barrel 1, thus locate focusing position more accurately.
Moreover, the present embodiment is also provided with speed pickup 7 on straight-line motion mechanism 3, this speed pickup 7 can detect the translational speed of module assembling cylinder 2 or lens barrel 1 in real time, thus capture apparatus main control chip can be made to know the translational speed of module assembling cylinder 2 or lens barrel 1, 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.
In sum, the present embodiment passes through the acting in conjunction of range sensor 6 and speed pickup 7, achieves the closed-loop control to auto-focusing module, improves the accuracy of auto-focusing.
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, it is characterized in that, comprise lens barrel (1), module assembling cylinder (2), it is interior and fixing that described lens barrel (1) is arranged at described module assembling cylinder (2), and the axis that the axis of described lens barrel (1) and described module assemble cylinder (2) is parallel to each other, and the cross central line that the cross central line of described lens barrel (1) and described module assemble cylinder (2) overlaps; The outer wall of described module assembling cylinder (2) is provided with the straight-line motion mechanism (3) for driving displacement.
2. auto-focusing module according to claim 1, it is characterized in that, described straight-line motion mechanism (3) comprises magnet (301), solenoid (302) and bidirectional current chip (303), described magnet (301) is close to the outer wall of described module assembling cylinder (2), described solenoid (302) and described magnet (301) are close to and just right, and the output terminal of described bidirectional current chip (303) is connected with described solenoid (302).
3. auto-focusing module according to claim 2, it is characterized in that, also comprise flat installation portion (201) and metal baffle (4), described flat installation portion (201) is arranged on the outer wall of described module assembling cylinder (2), and described magnet (301) is close to the surface of described flat installation portion (201); Described metal baffle (4) is close to described solenoid (302), and with the both sides of solenoid (302) described in described magnet (301) office.
4. auto-focusing module according to claim 3, it is characterized in that, also comprise ball (5), the both sides of described metal baffle (4) are provided with column-shaped trench (401), the length direction of described column-shaped trench (401) is parallel to the axis of described module assembling cylinder (2), and described ball (5) is arranged in described column-shaped trench (401).
5. auto-focusing module according to claim 1, is characterized in that, described straight-line motion mechanism (3) is also provided with the range sensor (6) for detecting described module assembling cylinder (2) positional information.
6. auto-focusing module according to claim 1, is characterized in that, described straight-line motion mechanism (3) is also provided with the speed pickup (7) for detecting described module assembling cylinder (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 |
|---|---|---|---|
| CN201510144631.5A CN104678678A (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 |
|---|---|---|---|
| CN201510144631.5A CN104678678A (en) | 2015-03-30 | 2015-03-30 | Shooting device and auto-focusing module thereof |
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| Publication Number | Publication Date |
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| CN104678678A true CN104678678A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510144631.5A Pending CN104678678A (en) | 2015-03-30 | 2015-03-30 | Shooting device and auto-focusing module thereof |
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| CN107479165A (en) * | 2017-09-11 | 2017-12-15 | 重庆睿恩光电子有限责任公司 | Camera and its lens driving apparatus |
| WO2018076141A1 (en) * | 2016-10-24 | 2018-05-03 | 江西森阳科技股份有限公司 | Camera module |
| CN111413775A (en) * | 2020-03-24 | 2020-07-14 | 睿恩光电有限责任公司 | Lens driving device, camera device and electronic apparatus |
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