The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1993
Filed:
Apr. 22, 1992
Applicant:
Inventors:
Hubert Hackenberg, Holzkirchen, DE;
Traugott Liermann, Unterhaching, DE;
Hans-Joachim Schrecke, Grasbrunn, DE;
Assignee:
Agfa-Gevaert AG, Leverkusen, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ;
U.S. Cl.
CPC ...
2502019 ; 355 68 ; 356121 ;
Abstract
A uniform illumination of the projection surface is obtained by measuring light intensity of a projection surface and adjusting a distance between a light source and an optical element in response to the measured light intensity to optimize brightness and/or distribution.