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:
Nov. 19, 2002
Filed:
Oct. 20, 1999
Applicant:
Inventors:
Yasuo Hayashi, Yokohama, JP;
Toshihiko Seki, Yokohama, JP;
Assignee:
Koito Industries, Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 7/00 ;
U.S. Cl.
CPC ...
F21V 7/00 ;
Abstract
An astral lamp includes a light source and a concave mirror. The concave mirror reflects light emitted by the light source and condenses the reflected light on a light source side toward an illumination area remote from the light source. The concave mirror is constituted by a plurality of concave mirror surfaces that form one parabolic mirror of revolution as a whole. The mirror surfaces respectively have curved surfaces for separately reflecting the light emitted by the light source and condensing the reflected light toward an entire portion of the illumination area.