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:
Sep. 13, 2011
Filed:
Dec. 22, 2009
Ken'ichi Kasazumi, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Ken'ichi Kasazumi, Osaka, JP;
Kiminori Mizuuchi, Osaka, JP;
Akihiro Morikawa, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
There is provided a light source device which can miniaturize a two-dimensional image display device as small as possible. The light source device is provided with three coherent light sources (), (), and () corresponding to red, blue, and green; prisms () and () for reflecting lights emitted from the coherent light sources () and (); and a diffraction part () comprising a single volume hologram on which plural gratings are multiply-formed, which gratings diffract the light emitted from the coherent light source (), and the lights that are emitted from the coherent light sources () and () and reflected by the prisms () and () so that these lights propagate in the same optical path.