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:
May. 17, 2005
Filed:
Jul. 12, 2002
Jason A. Payne, Rochester, NY (US);
Joseph W. Hoff, Fairport, NY (US);
Richard A. Castle, Webster, NY (US);
Charles L. Bauer, Webster, NY (US);
James F. Elman, Fairport, NY (US);
Jason A. Payne, Rochester, NY (US);
Joseph W. Hoff, Fairport, NY (US);
Richard A. Castle, Webster, NY (US);
Charles L. Bauer, Webster, NY (US);
James F. Elman, Fairport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A process for making an optical compensator, comprising the steps of coating a orientable resin in a solvent onto a support; drying the resin-containing coating; orienting the resin-containing layer in a predetermined direction; coating a nematic liquid-crystal compound in a solvent carrier onto the orientation layer; drying the nematic liquid-crystal-containing coating; thermally treating the nematic liquid-crystal compound layer, cooling the nematic liquid-crystal compound layer, polymerizing or curing the anisotropic nematic liquid-crystalline layer to form an integral component; and optionally repeating the above steps on top of the integral component so that the optical axis of the first anisotropic nematic liquid-crystal layer is positioned orthogonally relative to the respective optical axis of the second anisotropic nematic liquid-crystal layer about an axis perpendicular to the plane of the support.