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:
Jan. 14, 2003
Filed:
Oct. 27, 1999
Applicant:
Inventors:
Assignee:
Minebea Co., Ltd., Nagano, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F21V 8/00 ;
U.S. Cl.
CPC ...
F21V 8/00 ;
Abstract
According to the strength of the leak light from the spot-like light source the light diffusion film the light diffusion co-efficient is changed is disposed between the flat transparent substrate and the light source portion Thereby, by diffusing the strength of the leak light, the incident light to the one side end face of the resin substrate is made approximately even, and the direct entering of the leak light into the flat transparent substrate is suspended and thereby the generation of the bright line is suspended to realize an even and spread illumination.