CN102375291A - Coaxial synchronous automatic focus light box mechanism of camera module - Google Patents
Coaxial synchronous automatic focus light box mechanism of camera module Download PDFInfo
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- CN102375291A CN102375291A CN201010251228XA CN201010251228A CN102375291A CN 102375291 A CN102375291 A CN 102375291A CN 201010251228X A CN201010251228X A CN 201010251228XA CN 201010251228 A CN201010251228 A CN 201010251228A CN 102375291 A CN102375291 A CN 102375291A
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- lamp box
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Abstract
The invention discloses a coaxial synchronous automatic focus light box mechanism of a camera module. The coaxial synchronous automatic focus light box mechanism is mainly composed of a motor, a transmission shaft, a lamp box inside which is fixedly provided with a shot object, a focusing fixed seat capable of fixing the camera module and first and second transmission belts. When focusing, the motor drives the transmission shaft to rotate; the transmission shaft drives the first and second transmission belts to synchronously rotate; the first and second transmission belts respectively drive the focusing fixed seat and the lamp box which are connected with the transmission belts to realize the synchronous rotation of the camera module fixed on the focusing fixed seat and the shot object fixed in the lamp box; and when focusing, the camera module can automatically rotate under the actions of the motor, the transmission shaft and the first transmission belt, the disadvantage that the manual focusing capacity is insufficient is substituted, and the synchronous rotation of the shot object and the camera module can effectively prevent the picture shot by the camera module from rotating, and a position that the software captures the MTF (modulation transfer function) value cannot be changed, so that the software can more accurately capture the MTF value, and focusing is more accurate.
Description
Technical field
The present invention relates to the part body on a kind of camera module automatic focusing device, specifically relate to a kind of mechanism that when the focusing test, camera module and subject are rotated synchronously.
Background technology
Along with development of productivity, development of science and technology is maked rapid progress, and the camera technology also is develop rapidly, and is also increasingly high for camera quality and performance demands.Each camera module all has definite focal length, promptly has an optimal imaging face, during shot object, lets photoreceptor be on the optimal imaging face and just can obtain the optimal imaging effect, promptly best shooting effect.In the manufacturing process of camera module, its focal length is not adjusted to the optimal imaging effect, therefore is necessary the camera module is tested and adjusted, and its focal length is adjusted to reach the optimal imaging effect.
Traditional test and staff's hand-held camera module normally of focusing to the camera module accomplished; Though this mode also can reach certain test and focusing purpose; But its operation is random big, and the control of whole process is not enough, has human error unavoidably.In order to make focusing test that more science is more accurate, need to strengthen control to whole focusing test process, therefore, be necessary to develop a kind of automation equipment and accomplish the focusing test.Chinese patent ZL200620034488.0 discloses a kind of camera module focusing proving installation; This device can be fixed the camera module; And the transmission of rotation through knob and gear drives camera lens and rotates, thereby realizes focusing, this device than before manually-operated have significant superiority; But do not realize robotization fully, and apparatus structure more complicated.And because camera lens rotates when focusing, and subject is motionless, and the picture that can cause camera lens to absorb rotates, and software grasps the shift in position of mtf value (modulating transfer function value), makes focusing accurate inadequately.
Summary of the invention
In order to overcome above-mentioned defective; The invention provides a kind of coaxial synchronised automatic focusing light box mechanism of camera module; The coaxial synchronised automatic focusing light box mechanism of this camera module has realized automatic focusing; And when focusing subject and the camera module rotate synchronously, make focusing more accurate, again and simple in structure, easy to implement.
The present invention for the technical scheme that solves its technical matters and adopt is:
A kind of coaxial synchronised automatic focusing light box mechanism of camera module; Comprise motor, transmission shaft, subject and focusing holder; Motor connects said transmission shaft and can drive said transmission shaft around self axis rotation; The camera module can be fixed in said focusing holder, and transmission shaft one end drives said focusing holder rotation and the other end drives said subject rotation.
Further technical scheme of the present invention is:
Be provided with a lamp box, said subject is fixed in the lamp box, is fixed with the light source that is used to shine subject in the said lamp box.
Said subject is a figure line.
Said light source is the LED lamp.
Said transmission shaft one end drives that said focusing holder rotates and the other end drives the structure that said subject rotates and is: be provided with first and second driving belt; Said transmission shaft one end drives said focusing holder through the said first driving belt transmission and rotates, and the said transmission shaft other end drives said lamp box through the said second driving belt transmission and rotates.
The invention has the beneficial effects as follows: but the coaxial synchronised automatic of camera module of the present invention focusing light box mechanism mainly by motor, transmission shaft, internal fixation the lamp box of subject is arranged, focusing holder and first and second driving belt of fixing camera module constitutes on it; When focusing; The motor driven transmission shaft rotates; Transmission shaft drives said first and second driving belt synchrodrive simultaneously, and first and second driving belt drives connected focusing holder respectively and lamp box rotates, and focusing holder and lamp box are rotated synchronously; Camera module and the synchronous rotation of being fixed in the subject in the lamp box on the focusing holder have promptly been realized being fixed in; During focusing, the camera module rotates under the effect of motor, transmission shaft and first driving belt automatically, replaces in the past with the not enough shortcoming of manpower focusing production capacity; And subject rotates the picture rotation that can prevent effectively that the camera module from being absorbed synchronously with the camera module; The position that software grasps mtf value can not change, and makes software grasp mtf value more accurately, makes focusing more accurate.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
Embodiment: a kind of coaxial synchronised automatic focusing light box mechanism of camera module; Mainly comprise motor, transmission shaft 1, subject and focusing holder 2 and first and second driving belt 4,5; Be provided with a lamp box 3, said subject is fixed in the lamp box, is fixed with the light source that is used to shine subject in the said lamp box; Said subject is a figure line, and said light source is the LED lamp.
Motor connects said transmission shaft 1 and can drive said transmission shaft 1 around self axis rotation; The camera module can be fixed in said focusing holder 2; Said transmission shaft 1 one ends drive said focusing holder 2 through 4 transmissions of said first driving belt and rotate, and said transmission shaft 1 other end drives said lamp box 3 through 5 transmissions of said second driving belt and rotates.
Principle of work of the present invention is following:
During the focusing test; The motor driven transmission shaft rotates; Transmission shaft drives said first and second driving belt synchrodrive; First and second driving belt drives connected focusing holder respectively and lamp box rotates, and focusing holder and lamp box are rotated synchronously, has promptly realized being fixed in camera module and the synchronous rotation of being fixed in the subject in the lamp box on the focusing holder.During focusing; The camera module rotates under the effect of motor, transmission shaft and first driving belt automatically; Replace in the past with the not enough shortcoming of manpower focusing production capacity, and subject rotates the picture rotation that can prevent effectively that the camera module from being absorbed synchronously with the camera module, the position of software extracting mtf value can not change; Make software grasp mtf value more accurately, make focusing more accurate.
Claims (5)
1. the coaxial synchronised automatic of camera module focusing light box mechanism; It is characterized in that: comprise motor, transmission shaft (1), subject and focusing holder (2); Motor connects said transmission shaft and can drive said transmission shaft around self axis rotation; The camera module can be fixed in said focusing holder, and transmission shaft one end drives said focusing holder rotation and the other end drives said subject rotation.
2. the coaxial synchronised automatic focusing light box mechanism of camera module according to claim 1, it is characterized in that: be provided with a lamp box (3), said subject is fixed in the lamp box, is fixed with the light source that is used to shine subject in the said lamp box.
3. the coaxial synchronised automatic focusing light box mechanism of camera module according to claim 2, it is characterized in that: said subject is a figure line.
4. the coaxial synchronised automatic focusing light box mechanism of camera module according to claim 2, it is characterized in that: said light source is the LED lamp.
5. the coaxial synchronised automatic focusing light box mechanism of camera module according to claim 2; It is characterized in that: said transmission shaft one end drives that said focusing holder rotates and the other end drives the structure that said subject rotates and is: be provided with first and second driving belt (4,5); Said transmission shaft one end drives said focusing holder through the said first driving belt transmission and rotates, and the said transmission shaft other end drives said lamp box through the said second driving belt transmission and rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251228.XA CN102375291B (en) | 2010-08-10 | 2010-08-10 | Coaxial synchronous automatic focus light box mechanism of camera module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010251228.XA CN102375291B (en) | 2010-08-10 | 2010-08-10 | Coaxial synchronous automatic focus light box mechanism of camera module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102375291A true CN102375291A (en) | 2012-03-14 |
| CN102375291B CN102375291B (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010251228.XA Expired - Fee Related CN102375291B (en) | 2010-08-10 | 2010-08-10 | Coaxial synchronous automatic focus light box mechanism of camera module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937701A (en) * | 2012-11-16 | 2013-02-20 | 信利光电(汕尾)有限公司 | Camera shooting module motor tester |
| CN108241243A (en) * | 2016-12-27 | 2018-07-03 | 中国船舶重工集团公司七五〇试验场 | A kind of underwater electric focus control |
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|---|---|---|---|---|
| CN102937701A (en) * | 2012-11-16 | 2013-02-20 | 信利光电(汕尾)有限公司 | Camera shooting module motor tester |
| CN108241243A (en) * | 2016-12-27 | 2018-07-03 | 中国船舶重工集团公司七五〇试验场 | A kind of underwater electric focus control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102375291B (en) | 2014-11-05 |
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