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. 25, 2005
Filed:
Mar. 27, 2003
Yasunori Ogawa, Suwa, JP;
Fumie Kawai, Shiojiri, JP;
Yasunori Ogawa, Suwa, JP;
Fumie Kawai, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A polarization converter () has polarizing conversion element body (B) including: a polarization separating film () that separates an incident light into two linearly polarization beam; a reflecting film () alternately disposed between the polarization separating films (), the reflecting film reflecting a linearly polarization beam reflected by the polarization separating film (); a sheet glass () provided with the polarization separating film () and the reflecting film (); and a retardation plate () that converts a polarization axis of the linearly polarization beam transmitted through the polarization separating film (), a fixing frame (A) that shields incident light beam on a position on the light-incident side of the polarizing conversion element body (B) not opposing to the polarizing conversion element body (B), the fixing frame (A) having a holder that holds an end of the polarizing conversion element body (B) and a fixing portion to be fixed to an inner case.