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:
Aug. 31, 2004
Filed:
Feb. 26, 2001
Nobuhiko Konuma, Yokohama, JP;
Hidetomo Yoshimura, Zushi, JP;
Seiichi Sekiguchi, Fujisawa, JP;
Mikiharu Kuwata, Fujisawa, JP;
Masaharu Deguchi, Yokohama, JP;
Takashi Kakuda, Yokohama, JP;
Yutaka Matsuda, Yokohama, JP;
Takuya Shiaki, Sagamihara, JP;
Futoshi Yamasaki, Yokohama, JP;
Atsushi Ishibashi, Kokubunji, JP;
Koichi Umezawa, Kodaira, JP;
Takeshi Hoshino, Kodaira, JP;
Shigehisa Hagura, Akishima, JP;
Makoto Fukatsu, Kokubunji, JP;
Nobuyuki Kaku, Naka-gun, JP;
Kenji Fuse, Yokosuka, JP;
Satoshi Ohuchi, Kamakura, JP;
Tomohiro Miyoshi, Fujisawa, JP;
Naohiro Ozawa, Hiratsuka, JP;
Masahiko Yatsu, Fujisawa, JP;
Yasuo Otsuka, Chigasaki, JP;
Takesuke Maruyama, Yokohama, JP;
Other;
Abstract
A liquid crystal projector comprises an illuminating optical system including a light source, a color separating optical system for separating illuminating light rays emitted by the illuminating optical system into light rays of three colors, a projection lens unit comprising a projection lens, a cross dichroic prism disposed near a light receiving end of the projection lens, and a plurality of liquid crystal panels arranged around the cross dichroic prism, and a light source power supply for supplying power to the light source. The projection lens unit, the color separating optical system, the illuminating optical system and the light source power supply are arranged in that order. The liquid crystal projector has an outside size in a horizontal plane of 263 mm by 318 mm or below. The liquid crystal panels have a display screen size of 0.9 in. A cooling fan for cooling the plurality of liquid crystal panels is disposed beside the projection lens.