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:
Jun. 30, 2009
Filed:
Apr. 12, 2006
Satoshi Ouchi, Kamakura, JP;
Taro Imahase, Fujisawa, JP;
Tomohiro Miyoshi, Fujisawa, JP;
Fukuyasu Abe, Yokohama, JP;
Satoshi Ouchi, Kamakura, JP;
Taro Imahase, Fujisawa, JP;
Tomohiro Miyoshi, Fujisawa, JP;
Fukuyasu Abe, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An image display device includes a light source which outputs a first light including a first color light, a second color light and a third color light, a polarity converter which unifies polarities of the first light into a single polarity, a dichroic mirror which separates the first color light from the first light which is output by the polarity converter, and first to third reflective liquid crystal display elements, respectively, installed for the first to third color lights. First to third polarized beam splitters are provided together with first and second wavelength selective polarity rotator elements. A projection lens is provided so as to project a light combined by the third polarized beam splitter, and the first color light, which is reflected by the first reflective liquid crystal display element, permeates the first polarized beam splitter and the third polarized beam splitter.