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On-line measurement of the thickness and optical quality of float glass with a sensor based on a diffractive element

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Abstract

An on-line apparatus for accurate measurement of float-glass thickness and edge distortion was built and tested in industrial environments. The intelligent part of the sensor is a diffractive optical element. The theory and construction of the apparatus are described, and data from on-line measurements are presented.

© 2001 Optical Society of America

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