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:
Dec. 07, 2010
Filed:
Nov. 05, 2007
Takashi Ikeda, Higashi-Osaka, JP;
Makoto Maeda, Osaka, JP;
Ken Mashitani, Neyagawa, JP;
Hideyuki Kanayama, Uji, JP;
Takashi Ikeda, Higashi-Osaka, JP;
Makoto Maeda, Osaka, JP;
Ken Mashitani, Neyagawa, JP;
Hideyuki Kanayama, Uji, JP;
Sanyo Electric Co., Ltd, Moriguchi-shi, JP;
Abstract
An illumination apparatus includes a plate-like separation optical element having a dichroic surface and a PBS surface. The dichroic surface reflects green component light and transmits yellow component light. The PBS surface transmits P polarization component light and reflects S polarization component light. The separation optical element combines red component light entering from a certain direction and transmitted through the dichroic surface, with yellow component light entering from a different direction and reflected by the PBS surface, and leads a combined light towards a red liquid crystal panel. The separation optical element combines green component light entering from the certain direction and reflected by the dichroic surface, with yellow component light entering from the different direction and transmitted through the PBS surface, and leads a combined light towards a green liquid crystal panel.