Apparatus for measuring the reflectance of strips having non-uni

Details Apparatus for measuring the reflectance of strips having non-uni Apparatus for measuring the reflectance of strips having non-uni

1998-10-27

2000-09-26

Allen, Stephone B.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

25033911, 356445, G01N 2147

Patent

active

061245852

ABSTRACT:
An optical system for measuring the reflectance of flat strips having potentially optically non-uniform surfaces. In one embodiment the systems includes an array of discrete light sources, wherein each light source is driven by its own individual current, such that the pattern reflected onto a photodector is substantially uniform in intensity.

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