Method and system for detecting stripe defect of glass on line

Abstract

The invention provides a method and a system for on-line detection of glass stripe defects, and belongs to the technical field of detection methods. The method comprises the following steps: irradiating to-be-detected ultra-thin glass by using diffused coherent light, and capturing interference fringes formed by spatial coherence of the diffused coherent light reflected by the upper surface and the lower surface of the ultra-thin glass through at least one detection camera; and analyzing the abrupt change characteristics of the interference fringes, and judging whether the fringe defect exists in the ultra-thin glass. The diffusion coherent light is utilized to irradiate the ultrathin glass to be detected, interference fringes are captured through the detection camera, detection is simple, and online real-time detection of a large-breadth ultrathin glass production line can be achieved.

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