Light source regulation method for LCD glass substrate defect detection

A technology for glass substrate and defect detection, applied in measuring devices, material analysis through optical means, instruments, etc., can solve problems such as inability to maintain, achieve high repeatability, and simple and efficient light source adjustment methods

Active Publication Date: 2019-07-23
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on the technical problems existing in the background technology, the present invention proposes a light source adjustment method for liquid crystal screen glass substrate defect detection. Two pieces of white paper are used to determine the reference plane where the illuminated area is located and the reference line perpendicular to the moving direction, so that the reflection The reflected illumination area of ​​the light sou

Method used

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Example Embodiment

[0014] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0015] Examples.

[0016] A light source adjustment method for defect detection of LCD glass substrates, the design process is as follows:

[0017] (1) The light source model of the LCD glass substrate defect detection system

[0018] The light source model for TFT-LCD liquid crystal screen glass substrate defect detection is shown in the figure.

[0019] Attached figure 1 , 2 Shown in is the light source lighting model for traditional LCD glass substrate defect detection. When installing the light source in the imaging system, we can only estimate the approximate position of the light source during routine operation, but cannot accurately calibrate

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PUM

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Abstract

The invention discloses a light source regulation method for LCD glass substrate defect detection. Two white papers are used for determining a reference plane where a lighting area is and a datum lineperpendicular to a motion direction, a reflected lighting area of a reflected light source and transmission light area of a transmission light source are overlapped at the datum line and parallel tothe datum line, and perpendicular to a motion direction of a motion platform. The light source regulation method provided by the invention simple and efficient, has high repeatability, is beneficial for operation of experimenters, is beneficial for regulating a light source in practical application, and can be generalized in light source regulation of all robot vision system.

Description

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Claims

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Application Information

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Owner HEFEI UNIV OF TECH
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