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:
Feb. 11, 2003
Filed:
Nov. 25, 1998
Applicant:
Inventors:
Toshihiro Fujita, Osaka, JP;
Akito Okamoto, Osaka, JP;
Masaru Mamiya, Osaka, JP;
Ikkan Nishihara, Osaka, JP;
Shinichi Tanabe, Osaka, JP;
Assignee:
IDEC Izumi Corporation, , JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 ;
U.S. Cl.
CPC ...
H01J 1/62 ;
Abstract
An indicator device is intended to make an indication by illuminating a predetermined indicating surface, and comprises a light source ( ) for emitting a light (L ) of the first wavelength and a fluorescent plate ( ) disposed between the light source and the indicating surface for changing at least part of the light of the first wavelength projected from the light source into a light (L ) of the second wavelength longer than the first wavelength and projecting it towards the indicating surface.