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
Original Manuscript: October 16, 2000
Revised Manuscript: May 16, 2001
Published: October 1, 2001
Jari Räsänen and Kai-Erik Peiponen, "On-line measurement of the thickness and optical quality of float glass with a sensor based on a diffractive element," Appl. Opt. 40, 5034-5039 (2001)