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:
Oct. 20, 2015
Filed:
Jan. 13, 2012
Kazu Kobayashi, Kai, JP;
Kazu Kobayashi, Kai, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A projector includes a lighting device that emits light of a plurality of colors, a plurality of vertical alignment mode reflex-type liquid crystal light valves that modulate the color light, a phase difference compensation plate including a C-plate and an O-plate provided between the lighting device and the liquid crystal light valve, a color synthesizing element that synthesizes the color light after modulation, and a projection optical system that projects the synthesized light to a projection target face, and a front side phase difference value of the phase difference compensation plate corresponding to at least one liquid crystal light valve is different from a front side phase difference value of the other liquid crystal light valves.