Pass-line insensitive sensor

Details Pass-line insensitive sensor Pass-line insensitive sensor

2008-07-08

2008-07-08

Toatley, Jr., Gregory J. (Department: 2877)

Optics: measuring and testing

By monitoring of webs or thread

For flaws or imperfections

C356S431000, C356S445000

Reexamination Certificate

active

07397563

ABSTRACT:
Devices, systems and methods for detecting surface characteristics of a sample surface are disclosed. The exemplary system may have a conveying device for moving a sample surface and a light source for reflecting a beam of light off the sample surface. A light detector may receive the beam of light reflected from the sample surface. The area of the beam of light may be unequal to an area of a light detection surface of the light detector. A reference analyzer may determine the optical surface based on a comparison of the reflected light received with known reflected light values for known sample surfaces.

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patent: WO 98/49541 (1998-11-01), None
patent: WO 01/20308 (2001-03-01), None

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