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, 2005
Filed:
Nov. 26, 2001
Takashi Ikeda, Osaka, JP;
Toshio Obase, Osaka, JP;
Kensuke Konishi, Osaka, JP;
Yoshitaka Kurosaka, Hyogo, JP;
Takashi Ikeda, Osaka, JP;
Toshio Obase, Osaka, JP;
Kensuke Konishi, Osaka, JP;
Yoshitaka Kurosaka, Hyogo, JP;
Sanyo Electric Co., Ltd., Moriguchi, JP;
Abstract
A color separating/recombining unit used in liquid crystal projector using three reflection type liquid crystal panels. The color separating/recombining unit () has a cubic form comprising a light incidence surface () facing the light source unit (), three light incidence/output surfaces (), (), () respectively facing liquid crystal panels (), (), (), a light output surface () facing a projection optical system (), and another surface (). The color separating/recombining unit has thereinside a color separating/recombining means () that spectrally separates light shone from the light source () into three-primary-color components to allow them emit from corresponding light incidence/output surfaces (), (), () and to be reflected with their polarization directions rotated 90 degrees by the liquid crystal panels (), (), () disposed respectively facing the light incidence/output surfaces (), (), (), then recombines them, and emits them from the light output surface () to the projection optical system ().