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:
Aug. 24, 2010
Filed:
Aug. 29, 2008
Fumika Sumiyama, Matsumoto, JP;
Shunji Kamijima, Hara-mura, JP;
Fumika Sumiyama, Matsumoto, JP;
Shunji Kamijima, Hara-mura, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A multi-wavelength light source device includes three light source devices. The light source device includes a plurality of light emitting elements, and a dispersing section making wavelengths of light beams emitted from the respective light emitting elements different from each other, a spectral line width of the emitted light beam in each of the light source devices is equal to or greater than 0.2 nm, a wavelength of the red light beam in the light source device for emitting the red light beam is greater than 612 nm, a wavelength of the green light beam in the light source device for emitting the green light beam is greater than 525 nm and smaller than 538 nm, and a wavelength of the blue light beam in the light source device for emitting the blue light beam is greater than 465 nm and smaller than 468 nm.