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:
Jul. 25, 2000
Filed:
Oct. 27, 1997
Sony Corporation, Tokyo, JP;
Abstract
A liquid crystal projector has a pre-sheet polarizer and an incoming light side sheet polarizer on the incoming light side of a liquid crystal panel. Two sheet polarizers superimposed to each other are stuck on the outgoing light side face of the liquid crystal panel. The degree of polarization of the pre-sheet polarizer is smaller than that of the incoming light side sheet polarizer, so that both the sheet polarizers suitably share the quantity of absorbed light. Similarly, the degree of polarization of the incoming light side one of the sheet polarizers stuck on the outgoing light side face of the liquid crystal panel is smaller than that of the other one, so that both the sheet polarizers suitably share the quantity of absorbed light. With this configuration, the durability of the sheet polarizer is improved and the light output is increased.