Optical detection system and detection method based on side-in type multi-angle light source structure

Abstract

The invention relates to an optical detection system based on a side-in type multi-angle light source structure. The system comprises a horizontal rotating platform, an adjustable side light source structure, an image acquisition device, an image storage device and an image processing device which are arranged in sequence, and the horizontal rotating platform can drive a to-be-detected object to rotate in the horizontal direction. Meanwhile, the invention further develops a detection method based on a side type multi-angle light source structure. A horizontal rotating platform is additionallyarranged, so that a CCD camera can obtain gray scale images of the to-be-detected object at different horizontal rotation angles conveniently. At the moment, the fixed reflective area can be shielded,and then the non-shielding areas of the gray scale images are compared with a preset gray scale image, so that whether the to-be-detected object has flaws or not and the positions of the specific flaws are judged, the defect of traditional optical detection adopting a single-side side-in light source module or a double-side side-in light source module is overcome, and the situation of missing detection is prevented.

Description

technical field [0001] The invention relates to the field of technical optical detection, in particular to an optical detection system and detection method based on a side-type multi-angle light source structure. Background technique [0002] Automatic Optical Inspection (AOI) system, that is, a machine vision design solution developed by using high-resolution CCD, image capture, and real-time image analysis technology, is used to judge the product yield rate of a large number of accurate production lines; use The camera replaces the human eye visual verification to improve the production method. At present, various optical inspection manufacturers are working hard on this technology. However, the current technology still uses traditional algorithms and basic optical-mechanical models to correspond to the judgment criteria of appearance defects, which has a relatively high level of accuracy. Closed with a higher order threshold, so there are still the following defects: [...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide an optical detection system and detection method based on a side-type multi-angle light source structure, so as to solve the problem that defects are easily missed during optical detection in the prior art

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