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:
Nov. 01, 2011
Filed:
Jun. 10, 2008
Fumika Sumiyama, Matsumoto, JP;
Akira Miyamae, Fujimi-cho, JP;
Fumika Sumiyama, Matsumoto, JP;
Akira Miyamae, Fujimi-cho, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A light source device includes plural light-emitting elements that emit lights, a wavelength selection element that has plural light selection areas in which wavelength selection is performed for the lights emitted from the plural light-emitting elements, respectively, and selectively reflects a part of the lights emitted from the plural light-emitting elements, a state detecting unit that detects states of the plural light selection areas of the wavelength selection element, and a state changing unit that changes, according to the states of the plural light selection areas detected by the state detecting unit, the states of the light selection areas of the wavelength selection element to make wavelengths of the lights selected in the plural light selection areas different from one another.