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:
Nov. 12, 2013
Filed:
Jun. 06, 2011
Anil Kumar, Murrysville, PA (US);
Rachael L. Yoest, Gibsonia, PA (US);
Chenguang LI, Monroeville, PA (US);
Delwin S. Jackson, Clearwater, FL (US);
Henry Nguyen, Largo, FL (US);
Anil Kumar, Murrysville, PA (US);
Rachael L. Yoest, Gibsonia, PA (US);
Chenguang Li, Monroeville, PA (US);
Delwin S. Jackson, Clearwater, FL (US);
Henry Nguyen, Largo, FL (US);
Transitions Optical, Inc., Pinellas Park, FL (US);
Abstract
Provided are photochromic articles that include a substrate, a primer layer that includes a first photochromic compound, and a photochromic-dichroic layer over the primer layer that includes a photochromic-dichroic compound. The first photochromic compound and the photochromic-dichroic compound each are selected such that the photochromic-dichroic compound has an absorbance of less than or equal to 0.1 at the wavelength of peak absorbance of the underlying first photochromic compound. The present invention also relates to such photochromic articles that further include a topcoat layer over the photochromic-dichroic layer. The topcoat layer can include a second photochromic compound that has an absorbance of less than 0.1 at the wavelength of peak absorbance of the underlying photochromic-dichroic compound. The photochromic articles provide, for example, a combination of linear polarizing properties, and reduced percent transmittance when in a colored or darkened state, such as when exposed to actinic light.