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:
Sep. 22, 1992
Filed:
Sep. 26, 1990
Applicant:
Inventors:
Colin M Perrott, Portola Valley, CA (US);
Kenneth J Pidgeon, O'Halloran Hill, AU;
Assignee:
Pilkington Visioncare Holdings, Inc., Menlo Park, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359885 ; 359350 ; 359722 ; 351163 ;
Abstract
A color enhancing sun lens comprising a lens having an integrated visible light transmission, with respect to CIE illuminant C, of less than 40% T, wherein the transmission over a 10 nm wide band centered on 480 nm and a second 10 nm wide band centered on 630 nm is at least 1.5 times the integrated visible light transmission of the lens.