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:
Oct. 15, 1991
Filed:
Nov. 21, 1988
Applicant:
Inventor:
Alan R Henderson, Carlsbad, CA (US);
Assignee:
Hughes Aircraft Company, Los Angeles, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B / ; H05B / ;
U.S. Cl.
CPC ...
315158 ; 315155 ; 315338 ; 315344 ; 315346 ;
Abstract
Arc lamp output stability is improved by use of negative feedback which stabilizes arc position and intensity. Position and intensity of an image of the arc are sensed by optical sensors to control electromagnets which shift arc position so as to decrease wander and to control lamp current to decrease arc intensity variation.