CN202600357U - Camera module focusing test system - Google Patents
Camera module focusing test system Download PDFInfo
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- CN202600357U CN202600357U CN201120493581.9U CN201120493581U CN202600357U CN 202600357 U CN202600357 U CN 202600357U CN 201120493581 U CN201120493581 U CN 201120493581U CN 202600357 U CN202600357 U CN 202600357U
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Abstract
The utility model discloses a camera module focusing test system, comprises a focusing shed, and a light source, a focusing image and a focusing ring arranged in the focusing shed. The focusing ring is mounted in front of a lens of the camera module, and the focusing image is positioned between the light source and the focusing ring. While in work, the lens of the camera module is focused by the focusing ring, and the image data of the focusing image is collected by an image sensor of the camera module, and is transmitted to an external display device for the judgment of the focusing quality. According to the utility model, the camera module is arranged in the focusing shed, and the striped focusing image is arranged in front of the focusing ring, so that the image data of the focusing image is collected and transmitted to the external display device so as to enable the quick and accurate judgment of the focusing quality of the system.
Description
Technical field
The utility model relates to camera module checkout equipment, relates in particular to a kind of camera module focusing test macro.
Background technology
Referring to Fig. 1; Typical case's camera module 1 is made up of camera lens (Lens) 102, image inductor (Sensor) 104, flexible PCB (FPC) 105 and the reinforcement steel plate 107 etc. of base 103, band lens protection film 101; Photosensitive area 109 collects image light 108 during work; By obtaining view data after element 106 processing, be transferred to the external unit that is connected with golden finger 110 afterwards and do further processing.
Along with development of science and technology, the resolution of image inductor also improves a lot.For the high-resolution camera module, product quality closely links to each other with the quality of focusing performance.Than before VGA; 1.3M product; The product of existing main flow is basically all more than 2M; Ancient naked eyes see that the line focus adjustment method has been difficult to satisfy the test request and the test mass of existing high resolution camera module to a great extent, thereby are necessary to design a kind of new camera module focusing test macro.
The utility model content
In view of this, the purpose of the utility model is to provide a kind of camera module focusing test macro, can test the focusing performance of camera module fast, accurately.
For solving above technical matters; The technical scheme that the utility model provides is: a kind of camera module focusing test macro; Comprise the focusing canopy and be positioned at the light source of focusing canopy, the Chart that focuses (focusing figure) and focusing ring; Focusing ring is installed on camera module group lens front end, and focusing figure regulates camera module group lens focal length through focusing ring during work between light source and focusing ring; By the view data of the image inductor collection of camera module focusing figure, and be transferred to external display device and judge the focusing quality.
More excellent ground, the image inductor of camera module links to each other with the grabgraf base plate through the head changeover signal plate, and the grabgraf base plate is connected to external display device through data line.
More excellent ground, external display device comprises main frame and display.
More excellent ground, the center of focusing figure is provided with a plurality of concentric circless.
Compared with prior art; The utility model is through placing the camera module in the focusing canopy; And scored focusing figure is set in the front of focusing ring, the view data through gathering focusing figure also is transferred to external display device, just can be fast, the quality of focusing of judgement system accurately.
Especially; Center at focusing figure is provided with concentric circles; Module can produce a kind of special " low-pass effect " (usually said false color) in the image inductor when taking the stria main body image; Just can confirm the focusing position of module through methods such as judgement false color shape, color, sizes, thereby realize the purpose of quick, accurate focusing detection.
Description of drawings
Fig. 1 is the structural representation of typical camera module;
Fig. 2 is the synoptic diagram of the utility model camera module focusing test macro;
Fig. 3 is traditional focusing figure;
Fig. 4 is the preferred focusing figure of the utility model.
Embodiment
In order to make those skilled in the art understand the technical scheme of the utility model better, the utility model is done further to specify below in conjunction with accompanying drawing and specific embodiment.
Referring to Fig. 2, the preferred embodiment of expression the utility model camera module focusing test macro.This camera module focusing test macro comprises head changeover signal plate 2, grabgraf base plate 3, data line 4, light source 5, focusing canopy 6, and parts such as focusing Fig. 7, focusing ring 8, wherein: place other parts in the focusing canopy 6; Focusing ring 8 is installed on the camera lens front end of camera module 1; Fig. 7 is between light source 5 and focusing ring 8 in focusing; The Sensor of camera module 1 links to each other with grabgraf base plate 3 through head changeover signal plate 2, and this grabgraf base plate 3 is connected to external display device (being made up of main frame 9 and display 10) through data line 4.During work; Regulate the lens focus of camera module 1 by focusing ring 8; Gather the view data of focusing Fig. 7 afterwards by the Sensor of camera module 1, and be transferred to external display device and judge the focusing quality, can realize quick, the accurate purpose that detects of focusing thus.
Referring to Fig. 3, Fig. 4, the preferred focusing figure of the focusing figure of expression tradition respectively and the utility model.Than the tradition focusing figure of Fig. 3, the center of preferred focusing figure shown in Figure 4 is provided with a plurality of concentric circless, constitutes concentric circles focusing mode thus.Said concentric circles focusing, as the term suggests be exactly to adopt concentric circles focusing figure to focus, concrete principle of work is following:
When taking the stria main body image, module can produce a kind of special " low-pass effect " (usually said false color) in the image inductor, through judgement false color shape, and color, methods such as size are confirmed the focusing position of module, thereby reach the purpose of focusing.Wherein the generation of false color mainly comes from main body images such as connecting airtight striped, fence or concentric circles; Color is close inequality; When light passes camera lens and arrives at image inductor CMOS; Color separation mosaic optical filter only can be differentiated the green of 25% red and blue and 50%, is integrated into complete image via the computing of color processing engine maintenance data difference again.Because the shortage of congenital upward color data, CMOS can't judge the parameter of connecting airtight the adjacent color of striped at all, finally causes the color of engine misjudgment output error.Because CMOS solid-state image inductor is a kind of photoelectronic imaging device of discrete pixel; According to Nyquist's theorem; The discernmible high spatial frequency of image inductor equals its spatial sampling frequency half the, and this frequency just is called the nyquist limit frequency.When obtaining target image information with cmos camera; When sampled images surpasses the nyquist limit frequency of system; Radio-frequency component on image inductor will be reflected in the baseband; Cause so-called ripple effect or Moire effect thus, make image produce cycle frequency spectrum crossover and obscure or be called beat frequency phenomenon.The sampling frequency of supposing CMOS is 15MHZ; Aliasing frequency component when picture signal is 10MHZ is 15MHZ-10MHZ=5MHZ; In picture signal is that the aliasing frequency component at 9MHZ place is 15MHZ-9MHZ=6MHZ; These two aliasing frequency components all can't filter behind the circuit LPF, and it will be with useful picture signal by output (like 5MHZ and the 6MHZ signal content that in the waveform of being observed, superposes at 9MHZ and 10MHZ frequency band place); On the 7MHZ signal, there are tangible low-frequency beats to have the about 1MHZ of difference frequency; The signal of these aliasings will have influence on image definition, even the color fringe interference occur.Through observing these color fringes, just can realize that fast, accurately focusing detects.
In the present embodiment; Concentric circles focusing is the same with original recipe all to be to focus and judge that the focusing figure that just adopts is different through the people, thereby on original production is equipped, just can operate production easily; Need not to increase any cost, have market outlook preferably.
Only be the preferred implementation of the utility model below, should be pointed out that above-mentioned preferred implementation should not be regarded as the restriction to the utility model, the protection domain of the utility model should be as the criterion with claim institute restricted portion.For those skilled in the art, in spirit that does not break away from the utility model and scope, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (4)
1. camera module focusing test macro; It is characterized in that, comprise the focusing canopy and be positioned at the focusing canopy light source, focusing figure and focusing ring, focusing ring is installed on camera module group lens front end; Focusing figure is between light source and focusing ring; Regulate camera module group lens focal length through focusing ring during work,, and be transferred to external display device and judge the focusing quality by the view data of the image inductor collection focusing figure of camera module.
2. camera module focusing test macro as claimed in claim 1 is characterized in that, the image inductor of camera module links to each other with the grabgraf base plate through the head changeover signal plate, and the grabgraf base plate is connected to external display device through data line.
3. camera module focusing test macro as claimed in claim 1 is characterized in that external display device comprises main frame and display.
4. like each described camera module focusing test macro of claim 1～3, it is characterized in that the center of focusing figure is provided with a plurality of concentric circless.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120493581.9U CN202600357U (en) | 2011-12-01 | 2011-12-01 | Camera module focusing test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120493581.9U CN202600357U (en) | 2011-12-01 | 2011-12-01 | Camera module focusing test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202600357U true CN202600357U (en) | 2012-12-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120493581.9U Expired - Lifetime CN202600357U (en) | 2011-12-01 | 2011-12-01 | Camera module focusing test system |
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| CN (1) | CN202600357U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266822A (en) * | 2014-09-30 | 2015-01-07 | 信利光电股份有限公司 | Test method, test system and test device of micro camera module |
| CN104639936A (en) * | 2015-02-06 | 2015-05-20 | 苏州艾微视图像科技有限公司 | Automatic test method of camera |
| CN104793458A (en) * | 2014-01-20 | 2015-07-22 | 宁波舜宇光电信息有限公司 | Method and system for focusing multi-camera module based on near-infrared environment |
| CN107357128A (en) * | 2016-05-09 | 2017-11-17 | 宁波舜宇光电信息有限公司 | Look around shooting test device and its method of testing |
| CN112040121A (en) * | 2020-08-19 | 2020-12-04 | 欧菲微电子技术有限公司 | Focusing method and device, storage medium and terminal |
-
2011
- 2011-12-01 CN CN201120493581.9U patent/CN202600357U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793458A (en) * | 2014-01-20 | 2015-07-22 | 宁波舜宇光电信息有限公司 | Method and system for focusing multi-camera module based on near-infrared environment |
| CN104793458B (en) * | 2014-01-20 | 2019-03-08 | 宁波舜宇光电信息有限公司 | Multi-cam module focusing method and its system under a kind of environment based on near-infrared |
| CN104266822A (en) * | 2014-09-30 | 2015-01-07 | 信利光电股份有限公司 | Test method, test system and test device of micro camera module |
| CN104639936A (en) * | 2015-02-06 | 2015-05-20 | 苏州艾微视图像科技有限公司 | Automatic test method of camera |
| CN107357128A (en) * | 2016-05-09 | 2017-11-17 | 宁波舜宇光电信息有限公司 | Look around shooting test device and its method of testing |
| CN107357128B (en) * | 2016-05-09 | 2022-08-23 | 宁波舜宇光电信息有限公司 | All-round-looking camera test device and test method thereof |
| CN112040121A (en) * | 2020-08-19 | 2020-12-04 | 欧菲微电子技术有限公司 | Focusing method and device, storage medium and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TRULY OPTO-ELECTRONICS LTD. Free format text: FORMER NAME: TRULY OPTO-ELECTRONICS LIMITED |
|
| CP03 | Change of name, title or address |
Address after: 516600 Guangdong Industrial Zone, Shanwei City Road, Lee Lee Industrial City, a district of the building fifteenth Patentee after: Truly Opto-Electronics Ltd. Address before: 516600, Guangdong City, Shanwei Province Industrial Road, Xinli electronic industrial city Patentee before: Truly Semiconductors (Shanwei) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121212 |