CN101586948A - Method for measuring inclination angle of lens module - Google Patents
Method for measuring inclination angle of lens module Download PDFInfo
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- CN101586948A CN101586948A CNA2008103016735A CN200810301673A CN101586948A CN 101586948 A CN101586948 A CN 101586948A CN A2008103016735 A CNA2008103016735 A CN A2008103016735A CN 200810301673 A CN200810301673 A CN 200810301673A CN 101586948 A CN101586948 A CN 101586948A
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- lens module
- reflecting surface
- laser
- camera lens
- inclination angle
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Abstract
The invention discloses a method for measuring an inclination angle of a lens module, which comprises the following steps: providing a measuring device; providing a standard fixture which comprises a cylinder provided with a reflecting surface capable of reflecting laser; aligning the measuring device to the reflecting surface, emitting laser to the reflecting surface, and regulating relative positions of the standard fixture and the measuring device until a reflection angle of the laser is zero; fixing the lens module onto the standard fixture and making the reflecting surface positioned on a plane reserved for mounting an image sensor in the lens module; providing a horizontal reflecting mirror, and placing the horizontal reflecting mirror on an end face of one end of a lens barrel of the lens module, wherein the end is far away from the standard fixture; emitting the laser to the reflecting mirror to measure the reflection angle of the laser; and calculating the inclination angle of the lens module relative to the plane reserved for mounting the image sensor. The method for measuring the inclination angle of the lens module measures the inclination angle of the lens module relative to the plane reserved for mounting the image sensor by a geometric optical means.
Description
Technical field
The present invention relates to a kind of method for measuring inclination angle of camera lens module.
Background technology
Digital camera from first day that occurs with regard to because it can Direct Digitalization and enjoy people to like, the shooting process of digital camera is by image sensor, directly light signal is converted to electric signal and stores with digitizing.(see also " digital camera ABC " Chinese audio-visual education programme, 2002,12.80-82)
But, in manufacturing of camera module and maintenance assembling process, be subjected to the influence of spare part manufacturing and rigging error easily, produce the optical axis off plumb phenomenon of image sensor and camera lens module.The incident ray uneven illumination that this situation can cause image sensor to be accepted causes mistake Jiao in camera module imaging corner, thereby makes the image meeting that obtains inhomogeneous.Therefore need measure the pitch angle of the relative image sensor of described camera lens module, so that the Fabrication parameter of camera module is fed back.
Yet, when measuring the pitch angle of the relative image sensor of camera lens module at present, normally camera lens module in the camera module and image sensor etc. are all assembled, absorb the image of a standard pattern, by analyzing the pitch angle that described image obtains the relative image sensor of described camera lens module.Measurement means complexity, the measurement cycle is long.
Summary of the invention
Have in view of that, be necessary to provide a kind of method for measuring inclination angle that measures the simple camera lens module of means.
A kind of method for measuring inclination angle of camera lens module.Described camera lens module to be measured comprises a lens mount and a lens barrel.Described lens mount has a containing cavity, and described lens barrel is placed in this containing cavity.This method comprises the steps: to provide a measurement mechanism, and described measurement mechanism can calculate the reflection angle of the laser that is reflected by the be reflected laser of returning of emission laser and reception; A standard tool is provided, and described standard tool comprises a right cylinder, and a described cylindrical end face is a reflecting surface, and described reflecting surface can reflector laser; Make the reflecting surface of described measurement mechanism alignment criteria tool, to described reflection surface-emission laser, the relative position of adjusting described standard tool and measurement mechanism is till the reflection angle of described reflecting surface laser light reflected is zero degree; Described camera lens module is fixed on the described standard tool, and makes described reflecting surface be positioned at the predetermined plane that image sensor is installed of camera lens module, this plane is fitted in the end of the containing cavity of described lens mount away from lens barrel; One horizontal reflection mirror is provided and places it on the end face of lens barrel in the described camera lens module away from standard tool one end; Measure the reflection angle of described laser after to described catoptron emission Laser Measuring via this catoptron; Calculate the predetermined relatively pitch angle that the plane of image sensor is installed of camera lens module.
With respect to prior art, the method for measuring inclination angle of camera lens module provided by the present invention, by the catoptron on the end face that a standard tool and with reflecting surface is positioned over lens barrel is provided, can measure the pitch angle on the plane of the predetermined relatively image sensor of installing of camera lens module by the geometrical optics gimmick.The measurement means are simple, and the measurement cycle is short.
Description of drawings
The principle schematic of the method for measuring inclination angle of the camera lens module that Fig. 1 provides for embodiment of the present invention.
The structural representation of the method for measuring inclination angle of the camera lens module that Fig. 2 provides for embodiment of the present invention when measurement standard tool pitch angle.
The structural representation of the method for measuring inclination angle of the camera lens module that Fig. 3 provides for embodiment of the present invention when measuring the lens barrel pitch angle.
The method for measuring inclination angle process flow diagram of the camera lens module that Fig. 4 provides for embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present invention is described in further detail.
See also Fig. 1, the method for measuring inclination angle of the camera lens module that embodiment of the present invention provided, the principle of reflection of main applied optics by the reflection angle of difference Laser Measurement through two planes, thereby draws two pitch angle between the plane.Be appreciated that the reflection angle on another one plane is θ if the reflection angle on one of them plane is a zero degree, then the pitch angle on two planes just is θ.
See also Fig. 2, Fig. 3 and Fig. 4, camera lens module 10 to be measured comprises a lens mount 11 and a lens barrel 12, and described lens mount 11 has a containing cavity 111, and described lens barrel 12 is placed in described containing cavity 111.The method for measuring inclination angle of described camera lens module comprises the steps:
Step S202 provides a measurement mechanism 20, and described measurement mechanism 20 can calculate the reflection angle of the laser that is reflected by the be reflected laser of returning of emission laser and reception.
Step S204 provides a standard tool 30, and described standard tool 30 comprises a right cylinder 31 and a plummer 32.An end face of described right cylinder 31 is a reflecting surface 311, and described plummer 32 extends from the end of this right cylinder 31 away from reflecting surface 311.Described reflecting surface 311 can reflector laser.Described reflecting surface 311 can be the plane through mirror finish.Also can be that a end at right cylinder 31 is fixed with a catoptron, the reflecting surface 311 of this standard tool 30 be the minute surface of this catoptron.
Step S206 makes the reflecting surface 311 of described measurement mechanism 20 alignment criteria tools 30.To described reflecting surface 311 emission laser, the relative position of adjusting described standard tool 30 and measurement mechanism 20 is till the reflection angle of described reflecting surface 311 laser light reflected is zero degree.Be appreciated that the pitch angle that measures camera lens module 10 if desired in batches, then the stationkeeping of adjusted measurement mechanism 20 with standard tool 30 can be treated as index plane to reflecting surface 311.
Step S208 is fixed on described camera lens module 10 on the described standard tool 30, and makes described reflecting surface 311 be positioned at the camera lens module 10 predetermined planes that image sensor is installed, and this plane is fitted in the end of the containing cavity 111 of described lens mount 11 away from lens barrel 12.
Step S210 provides a horizontal reflection mirror 40 and places it on the end face of lens barrel 12 away from standard tool 30 1 ends in the described camera lens module 10.
Step S212 measures the reflection angle θ of described laser after via this catoptron 40 to described catoptron 40 emission Laser Measuring.
Step S214 calculates the predetermined relatively angle of inclination beta that the plane of image sensor is installed of camera lens module 10.In the present embodiment, described reflection angle θ equals angle of inclination beta.
In the method for measuring inclination angle of described camera lens module, described step S204 can be positioned at before the step S202.
With respect to prior art, the inclination angle measurement method of camera lens module provided by the present invention has reflecting surface by providing one Standard tool and be positioned over speculum on the end face of lens barrel, it is relative to measure the camera lens module by the geometric optics gimmick The inclination angle on the plane of the predetermined image sensing device of installing. The measurement means are simple, and the measurement cycle is short.
Be understandable that, for the person of ordinary skill of the art, can make other by technical conceive according to the present invention Various corresponding changes and distortion, and all these change the protection domain that all should belong to claim of the present invention with distortion.
Claims (4)
1. the method for measuring inclination angle of a camera lens module, described camera lens module to be measured comprises a lens mount and a lens barrel, and described lens mount has a containing cavity, and described lens barrel is placed in this containing cavity, it is characterized in that, and this method comprises the steps:
One measurement mechanism is provided, and described measurement mechanism can calculate the reflection angle of the laser that is reflected by the be reflected laser of returning of emission laser and reception;
A standard tool is provided, and described standard tool comprises a right cylinder, and a described cylindrical end face is a reflecting surface, and described reflecting surface can reflector laser;
Make the reflecting surface of described measurement mechanism alignment criteria tool, to described reflection surface-emission laser, the relative position of adjusting described standard tool and measurement mechanism is till the reflection angle of described reflecting surface laser light reflected is zero degree;
Described camera lens module is fixed on the described standard tool, and makes described reflecting surface be positioned at the predetermined plane that image sensor is installed of camera lens module, this plane is fitted in the end of the containing cavity of described lens mount away from lens barrel;
One horizontal reflection mirror is provided and places it on the end face of lens barrel in the described camera lens module away from standard tool one end;
Measure the reflection angle of described laser after to described catoptron emission Laser Measuring via this catoptron;
Calculate the predetermined relatively pitch angle that the plane of image sensor is installed of camera lens module.
2. the method for measuring inclination angle of camera lens module as claimed in claim 1 is characterized in that, described reflecting surface is the plane through mirror finish.
3. the method for measuring inclination angle of camera lens module as claimed in claim 1 is characterized in that, an end of standard tool is fixed with a catoptron, and the reflecting surface of described this standard tool is the minute surface of this catoptron.
4. the method for measuring inclination angle of camera lens module as claimed in claim 1 is characterized in that, described standard tool also comprises a plummer that extends out away from an end of reflecting surface from described right cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103016735A CN101586948B (en) | 2008-05-20 | 2008-05-20 | Method for measuring inclination angle of lens module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008103016735A CN101586948B (en) | 2008-05-20 | 2008-05-20 | Method for measuring inclination angle of lens module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101586948A true CN101586948A (en) | 2009-11-25 |
| CN101586948B CN101586948B (en) | 2012-03-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008103016735A Expired - Fee Related CN101586948B (en) | 2008-05-20 | 2008-05-20 | Method for measuring inclination angle of lens module |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829738A (en) * | 2011-06-17 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Measuring device for static-state inclination of voice coil motor |
| CN103528803A (en) * | 2013-10-31 | 2014-01-22 | 广州视睿电子科技有限公司 | Device and method for testing whether camera module is qualified |
| CN103868474A (en) * | 2012-12-14 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Static inclined angle measurement method for camera actuator module |
| CN105758337A (en) * | 2014-12-19 | 2016-07-13 | 宁波舜宇光电信息有限公司 | Method for obtaining included angel between a lens plane and an image sensor plane |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
-
2008
- 2008-05-20 CN CN2008103016735A patent/CN101586948B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102829738A (en) * | 2011-06-17 | 2012-12-19 | 鸿富锦精密工业（深圳）有限公司 | Measuring device for static-state inclination of voice coil motor |
| CN102829738B (en) * | 2011-06-17 | 2016-02-03 | 鸿富锦精密工业（深圳）有限公司 | Voice coil motor static tilt angles measurement mechanism |
| CN103868474A (en) * | 2012-12-14 | 2014-06-18 | 鸿富锦精密工业（深圳）有限公司 | Static inclined angle measurement method for camera actuator module |
| CN103528803A (en) * | 2013-10-31 | 2014-01-22 | 广州视睿电子科技有限公司 | Device and method for testing whether camera module is qualified |
| CN103528803B (en) * | 2013-10-31 | 2016-05-11 | 广州视睿电子科技有限公司 | Device and method for testing whether camera module is qualified |
| CN105758337A (en) * | 2014-12-19 | 2016-07-13 | 宁波舜宇光电信息有限公司 | Method for obtaining included angel between a lens plane and an image sensor plane |
| CN105758337B (en) * | 2014-12-19 | 2018-09-04 | 宁波舜宇光电信息有限公司 | A method of obtaining angle between lens plane and image sensor plane |
| CN110332908A (en) * | 2019-07-20 | 2019-10-15 | 大连理工大学 | A kind of high-precision laser is reflective to survey the device and method that inclines |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101586948B (en) | 2012-03-14 |
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