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. 23, 1991
Filed:
Jul. 27, 1988
Applicant:
Inventors:
Kenji Endo, Kyoto, JP;
Shinichi Nagata, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V / ;
U.S. Cl.
CPC ...
362337 ; 362335 ;
Abstract
An optical lighting system comprising either an optical system or an optical mirror system. In the optical lens and optical mirror systems, the light incident and exiting planes of the lenses and mirrors, are formed to satisfy given equations. Accordingly, in a contact or proximity exposure system, it is possible to unify irradiance on a surface to be irradiated and reduce the optical path length, thus reducing the overall device size. In a projection system, it is possible to unify irradiance on an image surface while efficiently utilizing light by ommitting a gradient filter.