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:
May. 17, 2011
Filed:
Jan. 11, 2007
Applicants:
Atsushi Kawachi, Hyogo, JP;
Hideaki Emoto, Hyogo, JP;
Katsuhiko Toda, Hyogo, JP;
Inventors:
Assignee:
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21S 4/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
An object is to provide a light-source lamp capable of reducing consumption power while ensuring a certain luminance level and a projector using the light-source lamp. This light-source lampgathers light from a light source at a lens for emission. The light sourcesare formed of a plurality of arranged light-emitting diodes, and the light sourcesare driven with pulse-width modulation control of the light-emitting diodes. With this, compared with a configuration in which the light sourcesare subjected to analog control, consumption power of the lamp can be reduced while ensuring a certain luminance level lm.