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:
Aug. 21, 1984
Filed:
Apr. 01, 1981
Applicant:
Inventors:
Eliezer Wiener-Avnear, Carlsbad, CA (US);
Jan Grinberg, Los Angeles, CA (US);
Assignee:
Hughes Aircraft Company, El Segundo, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G02F / ;
U.S. Cl.
CPC ...
3503 / ; 350335 ; 350342 ;
Abstract
This invention is a light valve using birefringent nematic liquid crystals in which compensation for residual birefringence is achieved by passing light through two separate liquid crystal layers having their major optical axes aligned perpendicular to one another at the interface between the two liquid crystal layers.