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:
Jan. 15, 2013
Filed:
May. 13, 2009
Masakuni Iwanaga, Akishima, JP;
Masakuni Iwanaga, Akishima, JP;
Casio Computer Co., Ltd., Tokyo, JP;
Abstract
A projector comprises a light source unit, a display device, a cooling fan, a light source side optical system for guiding light from the light source unitto the display device, a projection side optical system for projecting an image emitted from the display device on to a screen, and a projector control unit for controlling the light source unitand the display device. In addition, this light source unithas a plurality of fan-shaped segment areas on a circular transparent base materialwhich can be controlled to rotate, layersof different phosphors which emit light of predetermined wavelength bands by receiving excitation light being disposed on at least two of the segment areas on the transparent base material, and comprises an excitation light sourcewhich shines excitation light within a visible light wavelength band on to the phosphors.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile