Optical detecting instrument of defects in glass

A technology for optical detection and glass defects, applied in measurement devices, material analysis by optical means, scientific instruments, etc., can solve problems such as difficulty in correctly identifying defects, and achieve the effect of avoiding background interference, easy to implement, and simple to install.

Inactive Publication Date: 2007-02-07
SHANGHAI JIAO TONG UNIV
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  • Description
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Problems solved by technology

When the glass to be inspected is patterned glass with regular patterns, it is...

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  • Optical detecting instrument of defects in glass
  • Optical detecting instrument of defects in glass
  • Optical detecting instrument of defects in glass

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Embodiment Construction

[0026] In order to better understand the technical solution of the present invention, a further detailed description will be made below in conjunction with the accompanying drawings.

[0027] The structural composition and working principle of the optical detection device for glass defects of the present invention are as follows: figure 1 As shown, the detection device includes a laser 1 , a cylindrical mirror 2 , an object loading platform 11 , a shading cover 12 , a glass to be inspected 3 , a camera 6 (or a digital camera), a computer 7 and image processing and recognition software 8 .

[0028] The inspected glass 3 is placed on the loading platform 11, and the camera 6 is positioned above the loading platform 11. The light shield 12 is connected with the camera 6 around the area of ​​the inspected glass to block the background light. The camera 6 is connected to the computer 7, and the computer 7 Built-in camera control and image processing and recognition software8. The ...

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Abstract

The related optical detector for glass defect comprises: expanding the laser beam into plane beam to incidence from the target glass side; with the defect in glass as scatterer, such as air bubble and scratch, shooting the target on carrying platform by a camera controlled by computer to obtain the clear defect image to process by computer image process and recognition software, and displaying the defect mark and prompt. If adding an optical scanning mechanism included a rotating mirror and f-theta lens between the laser and column mirror, it can also be used for defect depth. This invention is simple and practicable for different target.

Description

technical field [0001] The invention relates to an optical detection device for glass defects, especially for patterned glass and coated glass, which can effectively avoid the interference of regular patterns printed on the glass and film layers on defect recognition, and achieve good defect imaging quality. The invention belongs to the field of optical defect detection. technical background [0002] In the glass production process, various reasons will lead to the occurrence and existence of defects. The main defects include scratches, bubbles and stains, etc. How to automatically identify glass defects is an urgent problem for glass manufacturers to control the quality of the production process and product quality inspection question. [0003] At present, many domestic glass manufacturers still rely on workers to identify defects in glass through their eyes, which is very inefficient. At present, most of the equipment used for optical detection of glass defects is import...

Claims

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Application Information

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IPC IPC(8): G01N21/958
Inventor 黄梅珍丁海峰李振庆倪一李伟门帅
Owner SHANGHAI JIAO TONG UNIV
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