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:
Sep. 10, 1996
Filed:
Jun. 29, 1990
Applicant:
Inventor:
Haruo Uemura, Kyoto, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G02B / ; F21V / ;
U.S. Cl.
CPC ...
359851 ; 359857 ; 359858 ; 362298 ; 362346 ;
Abstract
An illumination system for illuminating a surface includes a reflecting element having a finite focal length. A light source is located at a point, close to a focal point of the reflecting element, which is deviated from the principal axis of the reflecting element. Light from the light source is reflected by the reflecting element, whereby light with parallel rays is directed toward the surface. The surface is illuminated with symmetrical illuminance distribution with respect to the optical axis of the light.