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:
May. 17, 2005
Filed:
Jan. 27, 2000
Applicant:
Ken-ichi Takatori, Tokyo, JP;
Inventor:
Ken-ichi Takatori, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02F001/1335 ;
U.S. Cl.
CPC ...
Abstract
An optical modulation element includes a liquid crystal layer, white light source, and at least one flat mirror. The liquid crystal layer has a helix pitch and is held between a pair of transparent substrates having opposing transparent electrodes. The white light source sends white light onto a surface of one of the transparent substrates of the liquid crystal layer in an oblique direction. The flat mirror is arranged outside the other one of the transparent substrates to reflect the incident light transmitted through the liquid crystal layer toward the light source.