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. 24, 2011
Filed:
Sep. 25, 2008
Kentaro Yamauchi, Matsumoto, JP;
Tetsuo Terashima, Chino, JP;
Takeshi Takezawa, Matsumoto, JP;
Kazuo Okawa, Matsumoto, JP;
Keishi Kimura, Matsumoto, JP;
Kentaro Yamauchi, Matsumoto, JP;
Tetsuo Terashima, Chino, JP;
Takeshi Takezawa, Matsumoto, JP;
Kazuo Okawa, Matsumoto, JP;
Keishi Kimura, Matsumoto, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A light source includes an discharge lamp including a first electrode and a second electrode emitting light by discharge between them, a drive unit performing a steady operation which supplies steady energy to the first and second electrodes and an initial operation which supplies energy to the first and second electrodes with an operation different from the steady operation before performing the steady operation, a determination unit determining states of the discharge lamp and a data storage unit storing plural initial power feeding conditions provided corresponding to states of the discharge lamp as examples of the initial operation and plural steady power feeding conditions provided corresponding to the states of the discharge lamp as examples of the steady operation, in which the drive unit performs the initial operation in any one of conditions selected from the plural initial power feeding conditions according to a determination result by the determination unit and performs the steady operation in any one of conditions selected from the plural steady power feeding conditions according to a determination result by the determination unit.