Process and device for testing transparent material sheets

Details Process and device for testing transparent material sheets Process and device for testing transparent material sheets

G - Physics

01

N

340/124.6

G01N 21/88 (2006.01) G01N 21/896 (2006.01)

Patent

CA 1219933

ABSTRACT OF THE DISCLOSURE The present invention provides a method of testing transparent material sheets for flaws occluded in the sheet, such as foreign substances or gas bubbles, comprising scanning the material sheet with a flying light spot over its width, detecting transmitted and/or reflected radiation, detecting radiation emerg- ing laterally from the sheet, converting the detected radiation into electric signals, and evaluating the sheet with the aid of said signals.

408249

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