CN102375291B - 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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- CN102375291B CN102375291B CN201010251228.XA CN201010251228A CN102375291B CN 102375291 B CN102375291 B CN 102375291B CN 201010251228 A CN201010251228 A CN 201010251228A CN 102375291 B CN102375291 B CN 102375291B
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- camera module
- focusing
- transmission shaft
- rotate
- 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 ofly in when test focusing, can make camera module synchronize the mechanism of rotation with subject.
Background technology
Along with the development of yield-power, the development of science and technology is maked rapid progress, and camera technology is also develop rapidly, also more and more higher for the requirement of camera quality and performance.Each camera module has definite focal length, has an optimal imaging face, during shot object, allows photoreceptor be on optimal imaging face and just can obtain optimal imaging effect, be i.e. best shooting effect.In the manufacturing process of camera module, its focal length is not adjusted to optimal imaging effect, be therefore necessary camera module to test and adjust, by its Focussing to reaching optimal imaging effect.
Traditional the test of camera module and the staff's hand-held camera module normally of focusing completed, although this mode also can reach certain test and focusing object, but the randomness of its operation is large, the control of whole process is not enough, has unavoidably human error.In order to make focusing test more scientific more accurate, need to strengthen the control to whole focusing test process, therefore, be necessary to develop a kind of automation equipment and complete focusing test.Chinese patent ZL200620034488.0 discloses a kind of camera module focusing proving installation, this device can be fixed camera module, and drive camera lens to rotate by the rotation of knob and the transmission of gear, thereby realize focusing, this device has significant superiority than previous manual operation, but do not realize robotization completely, and apparatus structure more complicated.And because camera lens when focusing rotates, and subject is motionless, can cause the picture that camera lens absorbs to rotate, software captures the shift in position of mtf value (modulating transfer function value), makes focusing accurate not.
Summary of the invention
In order to overcome above-mentioned defect, the invention provides a kind of coaxial synchronous automatic focus light box mechanism of camera module, the coaxial synchronous automatic focus light box winding machine of this camera module automatic focusing, and subject is synchronizeed and is rotated with camera module when focusing, 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 synchronous automatic focus light box mechanism of camera module, comprise motor, transmission shaft, subject and focusing holder, motor connects described transmission shaft and can drive described transmission shaft around self axis rotation, camera module can be fixed on described focusing holder, and transmission shaft one end drives described focusing holder to rotate and the other end drives described subject to rotate.
Further technical scheme of the present invention is:
Be provided with a lamp box, described subject is fixed in lamp box, is fixed with for irradiating the light source of subject in described lamp box.
Described subject is figure line.
Described light source is LED lamp.
Described transmission shaft one end drives the structure that described focusing holder rotates and the other end drives described subject to rotate to be: be provided with first and second driving belt, described transmission shaft one end drives described focusing holder to rotate by described the first driving belt transmission, and the described transmission shaft other end drives described lamp box to rotate by described the second driving belt transmission.
The invention has the beneficial effects as follows: the coaxial synchronous automatic focus light box mechanism of camera module of the present invention is mainly by motor, transmission shaft, inside is fixed with the lamp box of subject, focusing holder and first that can fixing camera module on it, two driving belts form, when focusing, motor drives transmission shaft to rotate, transmission shaft drives described first simultaneously, two driving belt synchrodrive, first, two driving belts drive respectively connected focusing holder and lamp box to rotate, the holder that makes to focus is synchronizeed and is rotated with lamp box, the camera module being fixed on focusing holder and the synchronous rotation of being fixed on the subject in lamp box have been realized, during focusing, camera module is at motor, automatic rotating under the effect of transmission shaft and the first driving belt, replace in the past the shortcoming with manpower focusing production capacity deficiency, and subject is synchronizeed together and is rotated the picture rotation that can effectively prevent that camera module from being absorbed with camera module, the position that software captures mtf value can not change, make software can capture more accurately mtf value, make focusing more accurate.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Embodiment: a kind of coaxial synchronous automatic focus 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, described subject is fixed in lamp box, in described lamp box, be fixed with for irradiating the light source of subject, described subject is figure line, and described light source is LED lamp.
Motor connects described transmission shaft 1 and can drive described transmission shaft 1 around self axis rotation, camera module can be fixed on described focusing holder 2, described transmission shaft 1 one end drives described focusing holder 2 to rotate by described the first driving belt 4 transmissions, and described transmission shaft 1 other end drives described lamp box 3 to rotate by described the second driving belt 5 transmissions.
Principle of work of the present invention is as follows:
During focusing test, motor drives transmission shaft to rotate, transmission shaft drives described first and second driving belt synchrodrive, first and second driving belt drives respectively connected focusing holder and lamp box to rotate, the holder that makes to focus is synchronizeed and is rotated with lamp box, has realized the camera module being fixed on focusing holder and the synchronous rotation of being fixed on the subject in lamp box.During focusing, camera module is automatic rotating under the effect of motor, transmission shaft and the first driving belt, replace in the past the shortcoming with manpower focusing production capacity deficiency, and subject is synchronizeed together and is rotated the picture rotation that can effectively prevent that camera module from being absorbed with camera module, the position that software captures mtf value can not change, make software capture more accurately mtf value, make focusing more accurate.
Claims (1)
1. the coaxial synchronous automatic focus light box mechanism of a camera module, it is characterized in that: comprise motor, transmission shaft (1), subject and focusing holder (2), motor connects described transmission shaft and can drive described transmission shaft around self axis rotation, camera module can be fixed on described focusing holder, transmission shaft one end drives described focusing holder to rotate and the other end drives described subject to rotate, be provided with a lamp box (3), described subject is fixed in lamp box, in described lamp box, be fixed with for irradiating the light source of subject, described subject is figure line, described light source is LED lamp, described transmission shaft one end drives the structure that described focusing holder rotates and the other end drives described subject to rotate to be: be provided with first, two driving belts (4, 5), described transmission shaft one end drives described focusing holder to rotate by described the first driving belt transmission, the described transmission shaft other end drives described lamp box to rotate by described the second driving belt transmission.
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 |
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| CN102375291A CN102375291A (en) | 2012-03-14 |
| CN102375291B true CN102375291B (en) | 2014-11-05 |
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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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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102937701B (en) * | 2012-11-16 | 2014-12-10 | 信利光电股份有限公司 | Camera shooting module motor tester |
| CN108241243B (en) * | 2016-12-27 | 2020-07-17 | 中国船舶重工集团公司七五〇试验场 | Underwater electric focusing device |
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