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Optical Scanning Head with Homogeneously Illuminated Image Plane

IP.com Disclosure Number: IPCOM000050476D
Original Publication Date: 1982-Nov-01
Included in the Prior Art Database: 2005-Feb-10

Publishing Venue

IBM

Related People

Authors:
Ruppert, W [+details]

Abstract

Local and slowly changing temporal variations of the average light intensity in the image plane of an optical scanning head are compensated for by a photochromic plate arranged immediately in front of the image plane.