CN1912663A - Fixed-focus test method of mobile phone camera mould set - Google Patents
Fixed-focus test method of mobile phone camera mould set Download PDFInfo
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- CN1912663A CN1912663A CN200610088426.2A CN200610088426A CN1912663A CN 1912663 A CN1912663 A CN 1912663A CN 200610088426 A CN200610088426 A CN 200610088426A CN 1912663 A CN1912663 A CN 1912663A
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Abstract
A method for testing fixed-focus of mobile phone camera module includes utilizing heights of mobile phone camera modules and heights from reinforce plates to wafer surfaces to calculate out focus distances of said modules then taking its average value, adjusting focus distance of mobile phone camera module requiring fixed-focus to be said average value, fixing camera lens with lens mount of said module with ready focus distance by fast drying gel, assembling FPC on said module with fixed focal distance then checking whether image taken by said module is on specification or not.
Description
Technical field
The present invention relates to the technology that electron device is produced, the process that specifically a kind of cell-phone camera module is produced.
Background technology
The present invention a kind ofly adjusts pinpointed focus about the cell-phone camera module and makes the cell-phone camera module obtain the method for operating of the picture rich in detail of infinite distance, when test pattern, can save the manufacturing of cell-phone camera module time, increase work efficiency, and improve output.
Focal length is the scope of cell-phone camera module energy blur-free imaging, is divided into general shooting distance and close-perspective recording distance usually.General shooting distance all is denoted as " * * cm--infinite distance " usually, and most of cell-phone camera module then provides shooting at close range function (Macro) toward the contact meeting, remedies the problem that can't focus under the general screening-mode.
Because the developing rapidly of mobile phone market, kind various, cell phone manufacturer must accelerate the production of mobile phone in order to adapt to market, to dominate the market, and dominates the market in the very first time, and this just requires cell-phone camera module manufacturer to accelerate the production of cell-phone camera module
In the prior art, the production method of cell-phone camera module is: the camera lens of cell-phone camera module and microscope base are cooperated assembling with the air pressure cleaning after clean respectively, and check whether to cross loose tension. put into baking box with clamp clamps after then the flexible PCB of camera lens module and pairing (FPC) or circuit board (PCB) being assembled with the glue of stipulating and toast the regular hour, the lamp box of again the cell-phone camera module being put into appointment carries out the focal length debugging, make the clear picture that appears on the computer screen, reach optimum efficiency, and there is not bad phenomenon, then use the glue fixed lens of appointment, put into the baking box baking regular hour once more, drop into the functional test station then and test.This process has been finished the camera lens module and has been decided the fixing process of glue.The defective of this technology is: need turn camera lens screw thread when the cell-phone camera module is adjusted pinpointed focus, can produce because of friction thus and mould bits, cause the bad of cell-phone camera module, thereby reduced the efficient of producing.
When the cell-phone camera module is adjusted the pinpointed focus turn, do not note just easily camera lens being twisted extremely, cause the cell-phone camera module to change the camera lens heavy industry, the camera lens that changes is scrapped, and has both increased the production time, has increased manufacturing cost again.
When the cell-phone camera module was adjusted pinpointed focus, because camera lens is fixing, when glue, the easy positioning of camera lens occurred fuzzyly when causing the next process test, need do over again and camera lens is scrapped, and has both increased the production time, has increased manufacturing cost again.
After cell-phone camera module adjustment pinpointed focus is finished, also need toast, camera lens is completely fixed, need 40 minutes, thereby increased the production cycle of cell-phone camera module.
Summary of the invention
The objective of the invention is to seek a kind of fixed-focus test method of mobile phone camera mould set,, reduce manufacturing cost, increase work efficiency to shorten the production cycle of making the cell-phone camera module.
According to technical scheme provided by the invention, fixed-focus test method of mobile phone camera mould set comprises:
A, mensuration focal length: get several cell-phone camera module non-defective units, measure the whole height m of each cell-phone camera module non-defective unit and the height that stiffening plate arrives brilliant unit surface, calculate the focal length n of each cell-phone camera module non-defective unit respectively, get its mean value again, wherein,
Focal length n=whole height m-stiffening plate is to the height on brilliant unit surface;
B, focus: the focal length of the cell-phone camera module that needs are focused is transferred to the mean value of said determination;
C, fixed focal length: the camera lens and the microscope base that will regulate the cell-phone camera module of focal length with Instant cement are fixed;
D, cleaning assembling: get the cell-phone camera module that fixes focal length and the flexible PCB (FPC) of pairing and assemble.
E, image measurement: whether check image conformance with standard.
In the process of the focal length of regulating the cell-phone camera module, use the vernier caliper measurement height.
Advantage of the present invention is: owing to cancelled the focusing test, direct fixed lens height, do final test, therefore, can effectively reduce moulding of existing in the screw thread in process of production and consider the phenomenon of falling in brilliant unit to be worth doing, and avoid when test, camera lens occurring and twist dead problem, shortened the production cycle of cell-phone camera module, improved work efficiency.
Description of drawings
Fig. 1 is a structural drawing of the present invention.
Embodiment
Among the figure, camera lens 1 is a lens arrangement, is made up of several lens, plastic lens or glass lens are generally arranged, and base 7 cooperates with camera lens becomes the camera lens module, and imageing sensor 3 is the device of image and electrical signal conversion, flexible PCB 2 adopts complementary metal oxide semiconductor (CMOS), is used for the signal transmission.
In shooting module of the same race, when patch height adds under the situation that brilliant unit is highly consistent, camera lens is consistent, focal length also should be consistent in theory, whole height m-(paster adds brilliant unit height+flexible PCB (FPC) thickness)=focal length n.Cell-phone camera module non-defective unit of the present invention is meant through the certified products after the check.
Operation steps:
1, measures focal length: get 50 cell-phone camera module non-defective units, whole height m and stiffening plate with each cell-phone camera module non-defective unit of vernier caliper measurement arrive the surperficial height of brilliant unit, calculate the focal length of each cell-phone camera module non-defective unit respectively, get its mean value again, wherein, focal length n=whole height m-stiffening plate is to the height on brilliant unit surface;
2, fixed focal length: the focal length of the cell-phone camera module that needs are focused is transferred to the mean point of said determination, with Instant cement 6 camera lens and microscope base 7 is fixed; In the process of focusing, to use the vernier caliper measurement height.
3, cleaning assembling: get the cell-phone camera module that fixes focal length and the flexible PCB (FPC) of pairing and assemble.
4, image measurement: whether check image is clear, i.e. conformance with standard whether.
By analysis, influence clear picture have following some:
In process of production, the sharpness of image depends primarily on the size of focal length, and as can be seen from Figure 1, camera lens and microscope base are changeless, and the change of focal length is caused by following factor: 1, brilliant first height that produces when paster differs.2, camera lens cooperates the glue variable thickness that back and circuit board are fixed when assembling with microscope base.3, brilliant unit self focusing require different.4, camera lens self focusing require different.
Claims (3)
1, fixed-focus test method of mobile phone camera mould set is characterized in that:
A, mensuration focal length: get several cell-phone camera module non-defective units, measure the whole height m of each cell-phone camera module non-defective unit and the height that stiffening plate arrives brilliant unit surface, calculate the focal length n of each cell-phone camera module non-defective unit respectively, get its mean value again, wherein, focal length n=whole height m-stiffening plate is to the height on brilliant unit surface;
B, focus: the focal length of the cell-phone camera module that needs are focused is transferred to the mean value of said determination;
C, fixed focal length: the camera lens (1) that will regulate the cell-phone camera module of focal length with Instant cement (6) is fixed with microscope base (7);
D, cleaning assembling: get the cell-phone camera module that fixes focal length and the flexible PCB (FPC) of pairing and assemble;
E, image measurement: whether check image conformance with standard.
2, fixed-focus test method of mobile phone camera mould set as claimed in claim 1 is characterized in that: in the process of the focal length of regulating the cell-phone camera module, use the vernier caliper measurement height.
3, fixed-focus test method of mobile phone camera mould set according to claim 1, it is characterized in that: in the shooting module, flexible PCB (2) is installed in lower end at base (7), inside at base (7) is provided with cavity, in cavity, place camera lens (1), between flexible PCB (2) and camera lens (1), imageing sensor (3) is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610088426.2A CN1912663A (en) | 2006-08-23 | 2006-08-23 | Fixed-focus test method of mobile phone camera mould set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610088426.2A CN1912663A (en) | 2006-08-23 | 2006-08-23 | Fixed-focus test method of mobile phone camera mould set |
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| Publication Number | Publication Date |
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| CN1912663A true CN1912663A (en) | 2007-02-14 |
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| CN200610088426.2A Pending CN1912663A (en) | 2006-08-23 | 2006-08-23 | Fixed-focus test method of mobile phone camera mould set |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470239B (en) * | 2007-12-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Lens module, camera module with the same and its assembling method |
| CN102263887A (en) * | 2010-05-31 | 2011-11-30 | 昆山西钛微电子科技有限公司 | Mobile phone camera module and manufacturing process thereof |
| WO2017220015A1 (en) * | 2016-06-23 | 2017-12-28 | 宁波舜宇光电信息有限公司 | Fixed-focus camera module and manufacturing method therefor |
| CN107547777A (en) * | 2016-06-23 | 2018-01-05 | 宁波舜宇光电信息有限公司 | Focus camera module and its manufacture method |
| CN109348129A (en) * | 2018-11-13 | 2019-02-15 | 信利光电股份有限公司 | A kind of the clarity detection method and system of cameras with fixed focus |
| CN115278072A (en) * | 2022-07-25 | 2022-11-01 | 武汉精立电子技术有限公司 | Automatic focusing method and system for Micro LED detection |
-
2006
- 2006-08-23 CN CN200610088426.2A patent/CN1912663A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101470239B (en) * | 2007-12-27 | 2011-07-27 | 鸿富锦精密工业（深圳）有限公司 | Lens module, camera module with the same and its assembling method |
| CN102263887A (en) * | 2010-05-31 | 2011-11-30 | 昆山西钛微电子科技有限公司 | Mobile phone camera module and manufacturing process thereof |
| WO2017220015A1 (en) * | 2016-06-23 | 2017-12-28 | 宁波舜宇光电信息有限公司 | Fixed-focus camera module and manufacturing method therefor |
| CN107547777A (en) * | 2016-06-23 | 2018-01-05 | 宁波舜宇光电信息有限公司 | Focus camera module and its manufacture method |
| US10827103B2 (en) | 2016-06-23 | 2020-11-03 | Ningbo Sunny Opotech Co., Ltd. | Fixed-focus camera module and manufacturing method therefor |
| CN107547777B (en) * | 2016-06-23 | 2022-07-19 | 宁波舜宇光电信息有限公司 | Fixed-focus camera module and manufacturing method thereof |
| US11509887B2 (en) | 2016-06-23 | 2022-11-22 | Ningbo Sunny Opotech Co., Ltd. | Fixed-focus photographing module and focusing device and method thereof |
| CN109348129A (en) * | 2018-11-13 | 2019-02-15 | 信利光电股份有限公司 | A kind of the clarity detection method and system of cameras with fixed focus |
| CN109348129B (en) * | 2018-11-13 | 2020-11-03 | 信利光电股份有限公司 | Definition detection method and system for fixed-focus camera |
| CN115278072A (en) * | 2022-07-25 | 2022-11-01 | 武汉精立电子技术有限公司 | Automatic focusing method and system for Micro LED detection |
| CN115278072B (en) * | 2022-07-25 | 2024-05-24 | 武汉精立电子技术有限公司 | Automatic focusing method and system for Micro LED detection |
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