When measuring ultra-thin glass, conventional contact methods such as vernier calipers and micrometers are no longer sufficient and can easily damage the product. It is not very practical to manually measure glass with a thickness of 20-30 microns. Only non-contact optical measurement can be used, which can reduce the secondary damage of measuring tools to the product. The most commonly used technique on the market now is spectral confocal technology for measuring the thickness of thin glass. Conventional spectral confocal technology for measuring transparent materials requires knowledge of the refractive index of the material in order to actually measure the thickness. However, in measurements of the same material with different thicknesses, the refractive index can have deviations, and a constant refractive index can affect the measurement value.

THIJNKFOCUS exclusive technology can directly measure the thickness of thin glass without adding refractive index.