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:
Feb. 24, 2009
Filed:
Mar. 28, 2006
Masayuki Inamoto, Saitama, JP;
Masayuki Inamoto, Saitama, JP;
Fujinon Corporation, Saitama-Shi, JP;
Abstract
A polarization conversion device comprises a prismatic beam splitting assembly for separating p- and s- polarized polarized light orthogonal in the direction of polarization from a light source and a single sheet half-wave (λ/2) plate attached to an exit surface of the prismatic beam splitting assembly for changing one of the p- and s-polarized light 90° in the direction of polarization. The single sheet half-wave (λ/2) plate has a number of apertures arranged in a checked pattern and is prepared by die-cutting a single optical sheet using a pressing machine and adhered to the exit surface of the beam splitting assembly.