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. 27, 2009
Filed:
Jul. 03, 2006
Makoto Furusawa, Suwa, JP;
Akira Hashimoto, Suwa, JP;
Toru Kurihara, Suwa, JP;
Hiroyuki Shindo, Suwa, JP;
Makoto Furusawa, Suwa, JP;
Akira Hashimoto, Suwa, JP;
Toru Kurihara, Suwa, JP;
Hiroyuki Shindo, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
An illuminator includes a polarization converter that converts source light into first polarized light, a polarization separation member that separates the first polarized light of from the polarization converter and second polarized light different from the first polarized light, by reflection and transmission, a polarization switch member that reflects the first polarized light passed through the polarization separation member and changes same into the second polarized light, and a light guide having a first rod arranged between the polarization converter and the polarization separation member, a second rod arranged between the polarization separation member and the polarization switch member, and a third rod arranged on an optical path of the second polarized light separated by the polarization separation member.