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. 11, 2011
Filed:
Nov. 04, 2005
Toshifumi Yokoyama, Osaka, JP;
Kazuhisa Yamamoto, Osaka, JP;
Hiroyuki Furuya, Nara, JP;
Panasonic Corporation, Osaka, JP;
Abstract
In the video projector of the present invention, a fiber part of a fiber laser is disposed so as to draw a circulating orbit of more than one circulation along the inner wall of the projector housing. Further, an FBG which is part of the fiber laser is fixed so that its shape is not changed. Furthermore, a pump LD part of the fiber laser is disposed apart from the SHG element. As a result, the video projector can be miniaturized, and the portability and installment of the video projector are facilitated. Further, the output stabilization of the fiber laser can be realized by preventing a shape change of the FBG. Furthermore, by disposing the SHG element apart from the pump LD part which forms a heat source, the temperature change of the SHG element is suppressed and the wavelength conversion efficiency by the SHG element is enhanced.