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:
Dec. 03, 1991
Filed:
Dec. 10, 1990
Applicant:
Inventor:
Jayantilal S Patel, Red Bank, NJ (US);
Assignee:
Bell Communications Research, Inc., Livingston, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09K / ; C09K / ; G02F / ;
U.S. Cl.
CPC ...
25229901 ; 2522994 ; 359 75 ; 359 94 ;
Abstract
In successive zones of a layer of nematic liquid crystal material, the principal axes of at least some of the material in each zone are established orthogonal to the axes of at least some of the material in adjacent zones. By applying a uniform electric field to the zones of the entire layer, an electrically controlled polarization-independent Fresnel lens is achieved.
Quick Actions:
Patel, Jayantilal. (1991). Electrically controlled polarization-independent liquid crystal fresnel (U.S. Patent No. 5069813). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5069813
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile