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Apparent defect detection method for touch screen protective glass

A technology for protecting glass and appearance defects, which is applied in optical testing for flaws/defects, measuring devices, and material analysis by optical means. The effect of fast, low missed detection rate and consistent detection standards

Inactive Publication Date: 2015-01-21
SUZHOU PTC OPTICAL INSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many problems in the manual detection method, such as low detection speed, eye fatigue, difficult to unify detection standards, high missed detection rate, etc.

Method used

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  • Apparent defect detection method for touch screen protective glass

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Embodiment approach

[0020] figure 1 An embodiment of the method for detecting the appearance defect of the protective glass of the touch screen of the present invention is shown, which includes the following steps:

[0021] 1) Place the glass sample to be tested on a sample conveying device 1, the sample conveying device 1 can drive the sample to move linearly on the guide rail 2, and two illumination light sources 3 are arranged above the sample conveying device 1, and Take a camera 4;

[0022] 2) Move the sample conveying device 1 to transfer the glass samples placed on the sample support frame to the front camera 4 in turn;

[0023] 3) The front camera 4 captures the image of the surface of the glass sample, and the image data is transmitted to the computer;

[0024] 4) Finally, the computer program completes the image processing and analyzes the defect information of the sample.

[0025]

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Abstract

The invention discloses an apparent defect detection method, which can rapidly detect the apparent defect of touch screen protective glass and is suitable for batch flow detection application on production lines, for the touch screen protective glass. The detection method replaces original manual detection mode, is high in detection speed, uniform in detection standards, low in omission ratio, lower in the labor intensity of operating personnel, and higher in the overall detection efficiency and quality of touch screen protective glass, adopts automatic optical visual detection, and can effectively solve problems of manual detection.

Description

[0001] Technical field [0002] The invention relates to a method for detecting appearance defects of glass, in particular to a method for detecting appearance defects of touch screen protective glass. Background technique [0003] Touch screen protective glass is an ultra-thin glass that has been chemically tempered and meets the requirements of the touch screen industry. With the introduction of iPhone mobile phones and iPad tablet computers by Apple in the United States, it has greatly promoted the marketization of touch screens. At the same time, the industry has become more clear and strict in the specifications and inspection standards of touch screen protective glass. [0004] The production process of touch screen protective glass includes: cutting, CNC, flat grinding, surface tempering, silk screen printing and baking. In these processing processes, it is relatively easy to produce appearance defects such as surface scratches, edge chipping, dirt, sand edges, embossing, wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/95G01N21/958
Inventor 尚修鑫
Owner SUZHOU PTC OPTICAL INSTR
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