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. 24, 2017
Filed:
Oct. 08, 2013
Hitachi Consumer Electronics Co., Ltd., Yokohama, Totsuka-ku, JP;
Mitsuru Nagasawa, Tokyo, JP;
Satoshi Ouchi, Tokyo, JP;
Kunikazu Ohnishi, Tokyo, JP;
Tomoto Kawamura, Yokohama, JP;
HITACHI CONSUMER ELECTRONICS CO., LTD., Yokohama, JP;
Abstract
The projection display system has a light source unit where a first light source and a second light source respectively emitting a first and second wavelength or wavelength range of light are juxtapositionally arranged; a third light source emitting a third wavelength or wavelength range of light; an optical combiner device for combining the three wavelengths or wavelength ranges of light from the light sources; an optical device for averaging distributions of the wavelengths or wavelength ranges of light; an image display device for receiving the light transmitted through the optical device and forming image light responsive to a video signal; and a projector lens for projecting the image light onto a screen. At least two of the optical axes of the first, second, and third wavelengths or wavelength ranges of light which are incident on the optical device are not coincident with each other.