CN105828036A - One-way street arrangement multi-camera liquid crystal screen graph-capture device for flow line - Google Patents
One-way street arrangement multi-camera liquid crystal screen graph-capture device for flow line Download PDFInfo
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- CN105828036A CN105828036A CN201610184444.4A CN201610184444A CN105828036A CN 105828036 A CN105828036 A CN 105828036A CN 201610184444 A CN201610184444 A CN 201610184444A CN 105828036 A CN105828036 A CN 105828036A
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- China
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- photographic head
- screen
- liquid crystal
- lcd screen
- crawler belt
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
Abstract
The present invention discloses a graph-capture device aiming at the pixel defect detection of a liquid crystal screen, belonging to the field of the liquid crystal defect detection, and specially relates to a graph-capture device aiming at the pixel defect detection of a large-screen liquid such as a panel screen, a computer screen and the like. A plurality of low-pixel cameras arranged in line array at on pedestal substitute a single high-pixel camera in the prior art and control a liquid crystal screen to be detected to do displacement motion with fixed length to collect the defects of the whole liquid crystal screen. In the detection process, images collected by each camera are only detected to achieve the purpose of the defect detection of the whole liquid crystal screen. The one-way street arrangement multi-camera liquid crystal screen graph-capture device for a flow line is intelligible in collected images, low in cost, simple in structure and high in expandability, and is specially suitable for the defect detection of large-scale and high-resolution panel screens and computer screens.
Description
Technical field
The present invention is to adopt map device about a kind of for what liquid crystal display screen picture element flaw detected, and the picture element flaw especially for flat screen and computer screen detects.
Background technology
Relevant national examination criteria is not the most formulated in display defect detection currently for LCD screen, does not has LCD screen detection means quick, reliable and inspection software to use yet.In current liquid crystal screen process industry, the means detecting the display defect of LCD screen still rest on the dependence artificial macroscopic stage, and due to the subjectivity of the examined main body of manual detection and the drawbacks limit of objective aspects, tend not to the display defect the most quickly, accurately, stably detecting in LCD screen, and the human cost of this detection means, Financial cost are the highest.In this case, when producing dispute because of LCD screen defect problem when between user and producer, not having reliable LCD screen testing result as foundation, be difficult to judge which side the responsibility of dispute is attributed to, this will bring puzzlement greatly to producer and user.If the automatization of liquid crystal display screen display defect detection can be realized, replace traditional manual detection, production efficiency will be greatly improved, reduce production cost.
Realize automatization's display image firstly the need of collection LCD screen of large scale high-resolution LCD screen defects detection, then the image collected is carried out Digital Image Processing, detect defect place, thus find out the defective locations of the LCD screen of correspondence.Traditional method is to use single camera collection large scale high-resolution LCD screen image, and this just has the requirement of more than one hundred million pixel to single photographic head so that it is price is extremely expensive, adds the cost of defects detection；Simultaneously because high-pixel camera head gathers the slow of image, add the time of defects detection, delayed the speed of production of liquid crystal display screen, so traditional image-pickup method using single photographic head cannot be applied in actual production.For being based partially on the photographic head of line scanning, it is the slowest that it adopts figure speed, does not reaches the requirement of process in real time.It is acquisition method based on array photographic head that present stage up-to-date liquid crystal adopts figure detection method, though this method relatively above two kinds of methods are substantially reduced cost, improve and adopt figure efficiency, but it is more suitable for the other small-sized LCD screen of cell phone type and adopts figure detection, for large-size screen monitors liquid crystal display screens such as flat panel Liquid Crystal, the array photographic head quantity of its required arrangement is too much, and imaging calibration procedures is loaded down with trivial details and is not easy to repair, and cost intensive, it is necessary to provide a kind of liquid crystal display screen that can overcome above technical problem to adopt map device so real.
Summary of the invention
It is an object of the invention to a kind of multi-cam LCD screen that arranges for the one-way road of streamline of the weak point Curve guide impeller for background technology and adopt map device, thus reach the purpose that image is clear, low cost, simple in construction, extensibility height are applicable to large scale high-resolution liquid crystal screen defects detection gathered.
The present invention, a kind of solution adopting map device for the one-way road of streamline arrangement multi-cam LCD screen is to substitute the array photographic head in conventional art with linearly aligned multi-cam, and control tested LCD screen and fix the displacement movement of length, thus realize goal of the invention.Thus the present invention is a kind of adopts map device for the one-way road of streamline arrangement multi-cam LCD screen, this device includes: flow-line equipment, for installing the support of photographic head, photographic head, controller and corresponding connecting line；It is characterized in that flow-line equipment includes: support, power source, transmission crawler belt；Tested liquid crystal display screen is placed on streamline crawler belt, and moves with streamline crawler belt, and described photographic head includes the identical little photographic head of multiple parameter, and these little photographic head form a line and are arranged on support, and just to the streamline crawler belt placing LCD screen；Described controller controls the interval of taking pictures of each photographic head, controls to be used for transmitting the moving step sizes of crawler belt, speed, the time of staying, completely collects the purpose of whole LCD screen reaching single file multi-cam.
Further, photographic head parameter of the present invention is 5,000,000 pixels, resolution 2592*1944, focal length 3.8mm, and photographic head distance screen 74mm, physical view scope 16mm*12mm, the moving step sizes of streamline crawler belt is 12mm；And for various sizes of flat board, as the LCD screen of 7.9 inches, then needed 13 photographic head, as the screen of 9.7 inches, needed 15 photographic head.
A kind of LCD screen defects detection using multiple photographic head of the present invention adopts map device, fixed length motion is done by controlling streamline crawler belt, the multiple low pixel camera head simultaneously using linear arrangement to be placed on photographic head pedestal is fixed the figure of adopting of time interval and takes pictures, reach to collect the purpose of complete LCD screen image, so that the present invention has the effect that image is clear, low cost, simple in construction, extensibility height are applicable to large scale high-resolution liquid crystal screen defects detection of collection.
Accompanying drawing explanation
Fig. 1 is that the LCD screen of a kind of one-way road of present invention arrangement multi-cam adopts map device schematic diagram；
Fig. 2 is camera arrangement schematic diagram of the present invention；
In figure: 1 is the streamline crawler belt for laying LCD screen, and 2 is multiple photographic head, 3 is the support for installing photographic head.
Fig. 3 is the optical schematic diagram that array photographic head of the present invention adopts figure.
Specific embodiments
Any feature disclosed in description (including any accessory claim, summary and accompanying drawing), unless specifically stated otherwise, every feature is an example in a series of equivalence or similar characteristics, the present embodiment be the ipadmini flat panel Liquid Crystal screen defects detection for 7.9 inches design adopt drawing system.
The sample detected of the present invention is LCD screen, if the size of liquid crystal display screen is a × b, the coverage of photographic head is c × d, a size of L itself, and image acquisition interval time is e, and the linear arrangement number of photographic head is n, then need to meet such as linear arrangement to be formedImage acquisition time is
With reference to Fig. 1, the photographic head pedestal of the present invention is cuboid, a size of 250mm*30mm*20mm, arranges multiple photographic head according to linearly aligned mode, and the spacing between adjacent camera is 0 or adjusts the distance between camera as required.The parameter of each photographic head is identical, and lens parameters is 5,000,000 pixels, resolution 2592*1944, focal length 3.8mm.
With reference to Fig. 1, placing the streamline crawler belt of LCD screen, the LCD screen region that need to shoot is sent in camera view by mobile liquid crystal screen, and stop wait photographic head take pictures, after photographic head has clapped photograph, it is further continued for mobile, so moves in circles until the region of whole LCD screen gathers complete.
Detected screen display picture is pure white, is made up of red green blue tricolor.Detected LCD screen is vertical with the optical axis of cam lens.
The present invention uses linearly aligned mode to arrange photographic head, so the coverage of photographic head is greater than the size of photographic head itself, physical view scope 16mm*12mm of the photographic head shooting that the present invention chooses, more than size 10mm*10mm of photographic head itself, meets linear arrangement condition.
The ipadmini flat panel Liquid Crystal screen that sample is 7.9 inches of present invention detection, its a size of 200mm × 134.7mm, need 13 photographic head linear arrangements.As shown in figure, 13 photographic head are linearly fixed on pedestal, and control camera collection image by computer, make 13 photographic head can be clearly captured the LCD screen being positioned on streamline crawler belt simultaneously.
In sum, based on multi-cam linearly aligned LCD screen defect detecting system, by by the LCD screen image diversion of more than one hundred million pixels to multiple photographic head, reducing cost；With 5,000,000 pixels, resolution 2592*1944, as a example by the photographic head of focal length 3.8mm, the present invention detects the ipadmini flat panel Liquid Crystal screen of 7.9 inches and only needs 13 photographic head, if and employing array photographic head is adopted drawing system and is detected the ipadmini flat panel Liquid Crystal screen of 7.9 inches, then need 156 photographic head, so present invention substantially reduces the number of required photographic head, reduce cost, simultaneously because the minimizing of required photographic head number, the adjustment of the present invention is the most simple and easy to do with repairing, so the present invention is especially suitable for large scale high-resolution LCD screen defects detection, and the number of photographic head only need to be added and subtracted accordingly for the defects detection of different size LCD screen, application is flexibly, practicality is high.
Claims (2)
1. adopting a map device for the one-way road of streamline arrangement multi-cam LCD screen, this device includes: flow-line equipment, for installing the support of photographic head, photographic head, controller and corresponding connecting line；It is characterized in that flow-line equipment includes: support, power source, transmission crawler belt；Tested liquid crystal display screen is placed on streamline crawler belt, and moves with streamline crawler belt, and described photographic head includes the identical little photographic head of multiple parameter, and these little photographic head form a line and are arranged on support, and just to the streamline crawler belt placing LCD screen；Described controller controls the interval of taking pictures of each photographic head, controls to be used for transmitting the moving step sizes of crawler belt, speed, the time of staying, completely collects the purpose of whole LCD screen reaching single file multi-cam.
A kind of multi-cam LCD screen that arranges for the one-way road of streamline adopts map device, it is characterized in that described photographic head parameter is 5,000,000 pixels, resolution 2592*1944, focal length 3.8mm, photographic head distance screen 74mm, physical view scope 16mm*12mm, the moving step sizes of streamline crawler belt is 12mm；For the LCD screen of 7.9 inches, need 13 photographic head；For the screen of 9.7 inches, need 15 photographic head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184444.4A CN105828036A (en) | 2016-03-28 | 2016-03-28 | One-way street arrangement multi-camera liquid crystal screen graph-capture device for flow line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610184444.4A CN105828036A (en) | 2016-03-28 | 2016-03-28 | One-way street arrangement multi-camera liquid crystal screen graph-capture device for flow line |
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| Publication Number | Publication Date |
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| CN105828036A true CN105828036A (en) | 2016-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610184444.4A Pending CN105828036A (en) | 2016-03-28 | 2016-03-28 | One-way street arrangement multi-camera liquid crystal screen graph-capture device for flow line |
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| CN (1) | CN105828036A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107748428A (en) * | 2017-10-18 | 2018-03-02 | 歌尔股份有限公司 | Screen detects Atomatic focusing method and device |
| CN109213092A (en) * | 2017-07-04 | 2019-01-15 | 西克股份公司 | The method of parametrization for sensor |
| WO2021203650A1 (en) * | 2020-04-07 | 2021-10-14 | 深圳回收宝科技有限公司 | Defect detection apparatus for screen of electronic device |
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| CN1103978A (en) * | 1993-07-13 | 1995-06-21 | 夏普公司 | A checking apparatus for flat type display panels |
| JP2009216628A (en) * | 2008-03-12 | 2009-09-24 | Asahi Glass Co Ltd | Defect detector and defect detection method |
| CN102788802A (en) * | 2012-08-29 | 2012-11-21 | 苏州天准精密技术有限公司 | Workpiece quality detection method by multiple cameras |
| CN103955080A (en) * | 2014-04-29 | 2014-07-30 | 电子科技大学 | Multi-camera liquid crystal screen defect detection and image collection device |
| CN105116572A (en) * | 2015-09-18 | 2015-12-02 | 信利（惠州）智能显示有限公司 | Liquid crystal substrate detection device |
-
2016
- 2016-03-28 CN CN201610184444.4A patent/CN105828036A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103978A (en) * | 1993-07-13 | 1995-06-21 | 夏普公司 | A checking apparatus for flat type display panels |
| JP2009216628A (en) * | 2008-03-12 | 2009-09-24 | Asahi Glass Co Ltd | Defect detector and defect detection method |
| CN102788802A (en) * | 2012-08-29 | 2012-11-21 | 苏州天准精密技术有限公司 | Workpiece quality detection method by multiple cameras |
| CN103955080A (en) * | 2014-04-29 | 2014-07-30 | 电子科技大学 | Multi-camera liquid crystal screen defect detection and image collection device |
| CN105116572A (en) * | 2015-09-18 | 2015-12-02 | 信利（惠州）智能显示有限公司 | Liquid crystal substrate detection device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109213092A (en) * | 2017-07-04 | 2019-01-15 | 西克股份公司 | The method of parametrization for sensor |
| CN109213092B (en) * | 2017-07-04 | 2024-04-23 | 西克股份公司 | Method for parameterizing a sensor |
| CN107748428A (en) * | 2017-10-18 | 2018-03-02 | 歌尔股份有限公司 | Screen detects Atomatic focusing method and device |
| WO2021203650A1 (en) * | 2020-04-07 | 2021-10-14 | 深圳回收宝科技有限公司 | Defect detection apparatus for screen of electronic device |
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Application publication date: 20160803 |
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