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. 24, 2004
Filed:
Nov. 15, 1999
Applicant:
Inventor:
Austin L. Huang, Camas, WA (US);
Assignee:
Sharp Laboratories of America, Inc., Camas, WA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/1335 ;
U.S. Cl.
CPC ...
G02F 1/1335 ;
Abstract
A projection display system includes a light source, at least-one polarizer, at least one liquid crystal panel for generating an image, and a projection lens for projecting the image. The system includes a polarization compensator having a plurality of regions each having a respective birefringence. The birefringence of one of the regions is different than the birefringence of another of the regions. The birefringence of the various regions may be controlled electrically.
Huang, Austin. (2004). Projection display having polarization compensator (U.S. Patent No. 6781640). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6781640
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile