Abstract
This article describes an optical non-contact sheet glass thickness meter, whose principle of operation is based on the comparison of optical signals obtained by three photodiodes from the same sources. In this case, two light beams pass through the glass, one of which falls on the controlled sample at an angle, the second is directed perpendicular to the surface of the glass. The third beam does not pass through the sample. The device will allow carry in out operational quality control of glass in the process of its manufacture. Using of the reference channel in the scheme will provide the reliable data, taking into account the influence of various external factors.
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