Nowadays a lot of glass screen manufacturers have to monitor their process constantly. Among the different measurements are glass thickness, glass coating thickness and scratch inspection.
Many products such as computer touch screens, phone screens and LCDs have those needs. Most of the tests are done today in Far-East countries such as Korea, China and Japan, but not exclusively. Many of them use vision equipment in order to cover large areas, and combine this with high-resolution laser sensors over local detected “suspicious areas.”