Optical detection equipment and method

A technology of optical detection and equipment, applied in the direction of testing optical properties, material analysis through optical means, measuring devices, etc., can solve problems such as affecting results, uneven coating, and difficult quality control
CN101650320AInactive Publication Date: 2010-02-17DELTA ELECTRONICS INC
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DELTA ELECTRONICS INC
Publication Date
2010-02-17
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to optical detection equipment, which can improve the accuracy and the effect of the defect detection of a substrate, and further improve the process yield and reduce the production cost by using a projective image formed by light rays with multiple visual angles and different wavelengths. The optical detection equipment comprises a light source, a reflective element and an image acquisition element, wherein the light source projects the light rays to an object to be detected; the reflective element is provided with at least two reflective surfaces for reflecting the light rays passing through the object to be detected; and the image acquisition element receives the reflected light rays to form the projective image.
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Description

technical field

[0001] The invention relates to an optical detection device and method, in particular to an optical detection device and method for detecting uneven color defects of color filters. Background technique

[0002] The uneven color of the color filter is caused by visual perception of different degrees of color difference under the same light source and the same background color. Poor coating causes light to be refracted at different angles and therefore responds differently to color from different viewing angles.

[0003] At present, the method of artificial sampling inspection is still widely used in the field for the detection of uneven color, which has the following disadvantages:

[0004] 1. Quality control is not easy: because it cannot be tested one by one by manual sampling inspection, and it must be judged visually by people under different angles and different intensity light sources. The missed detection can only be detected after the missed detectio...

Claims

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