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. 31, 2022
Filed:
Mar. 12, 2020
Vision Ease, Lp, Ramsey, MN (US);
James Mulligan, North Yorkshire, GB;
Michael Boulineau, Forest Lake, MN (US);
Jeffrey Brown, St. Louis Park, MN (US);
Jared Johnson, Ramsey, MN (US);
Michael Marshall, Andover, MN (US);
Sandy Goebel, Stacy, MN (US);
Joseph Leaman, Minneapolis, MN (US);
HOYA Optical Labs of America, Inc., Lewisville, TX (US);
Abstract
The present invention relates to a polarization filter for ophthalmic lenses. The polarization filter comprises a mesogen layer coated onto a retardation film, either directly or through an adhesive layer. The present invention further discloses that the polarization filter formed by employing a thin film or sheet, having a defined level of retardation between the light source and the mesogen layer, for example, a cholesteric mesogen layer, the multilayered laminate structure demonstrates linear polarization of the light transmitted through the mesogen laminate structure, and, hence, can be used in ophthalmic lenses, e.g. spectacle or eyeglass lenses. The polarization filter enhances the performance by allowing transmission of the polarization filter closer to the theoretical maximum transmission.