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:
Mar. 31, 2009
Filed:
Feb. 27, 2003
Kenichi Iwauchi, Matsudo, JP;
Atsushi Yamanaka, Chiba, JP;
Mitsuyoshi Seo, Ichikawa, JP;
Akemi Oohara, Funabashi, JP;
Kenichi Iwauchi, Matsudo, JP;
Atsushi Yamanaka, Chiba, JP;
Mitsuyoshi Seo, Ichikawa, JP;
Akemi Oohara, Funabashi, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A light emitting device provided with a plurality of types of light sources having different light emitting colors and with a light emission control means for allowing light to emit, during a specified period of monitoring a light emitting intensity, from at least one light source out of the plurality of types of light sources at a light emitting intensity different from that available outside the specified period. Accordingly, when a plurality of types of light sources are used, the light emitting intensities of a plurality of types of light sources can be monitored with light sensors of types fewer than the types of light sources to control while points and a brightness characteristics.