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. 26, 2000
Filed:
Oct. 22, 1997
Applicant:
Inventor:
Robin Clabburn, Sevenhampton, GB;
Assignee:
Nashua Corporation, Nashua, NH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29D / ;
U.S. Cl.
CPC ...
264-134 ; 264-136 ; 264-138 ; 264-27 ; 2642884 ; 2642893 ; 2642902 ;
Abstract
Screens having unique optical properties are produced according to the invention by crosslinking and stretching, or otherwise deforming, a sheet of light-diffusing material having symmetrical light diffusion characteristics under conditions sufficient to induce asymmetry. Screens made from the asymmetric light diffusing materials described herein exhibit enhanced brightness and clarity. Utilizing the present methods, optical materials having a desired view angle or improved optical characteristics can be achieved.