Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1988-09-08
1990-02-06
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
250227, 355 1, H01J 314, G03B 2700
Patent
active
048990400
ABSTRACT:
An illumination system for image scanner apparatus that varies the amount of light in an object (film) plane as a function of field angle, to render irradiance at an image sensor relatively uniform with field angle. In a preferred embodiment, an optical converter regulates the irradiance in the object plane as a function of field angle by varying the power radiated along a line of diffuse light projected onto the object plane.
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Davis Michael H.
Erck Gary L.
Eastman Kodak Company
Messinger Michael
Monteith Dennis P.
Nelms David C.
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