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. 13, 2011
Filed:
Sep. 01, 2010
Anil Kumar, Murrysville, PA (US);
Peter C. Foller, Murrysville, PA (US);
Elizabeth Furar, Pittsburgh, PA (US);
Forrest R. Blackburn, Monroeville, PA (US);
Anil Kumar, Murrysville, PA (US);
Peter C. Foller, Murrysville, PA (US);
Elizabeth Furar, Pittsburgh, PA (US);
Forrest R. Blackburn, Monroeville, PA (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
The present invention provides composite optical elements including a photochromic linear polarizing element and a birefringent layer such that composite optical element circularly or elliptically polarizes transmitted radiation. The photochromic linear polarizing element is formed from (i) an at least partially ordered polymeric sheet; and (ii) a reversible photochromic-dichroic material that is at least partially aligned with the polymeric sheet and has an average absorption ratio of at least 1.5 in the activated state. The birefringent layer includes a polymeric coating or a polymeric sheet connected to the photochromic linear polarizing element.