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:
Feb. 08, 2000
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Rod J Levin, Palatine, IL (US);
Robert Schmidt, Chicago, IL (US);
Assignee:
Zenith Electronics Corporation, Glenview, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359819 ;
Abstract
A two piece plastic lens for a large screen projection system in which the two lens elements are formed with similar curves. The lens is supported at its peripheral edge by a flexible strip having a T-cross section that fits into a matching groove in a frame or on the housing. The curved lens elements tend not to separate with temperature changes and the like and focus and display quality are maintained.
Levin, Rod. (2000). Two piece curved projection lens method and apparatus (U.S. Patent No. 6023380). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6023380
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile