Abstract: Optical-quality polarized parts and methods for manufacturing the optical parts are disclosed. The optical-quality polarized parts comprise a high impact, lightweight, high optical quality polyurethane construct and a polarizer bonded to the construct. The construct may be a lens substrate wherein the polarizer is integrally bonded at or near the front surface of the lens substrate. A sidefill gasket may be used to support and position the polarizer within a mold cavity for reproducibly forming the optical part. The polarizer may comprise a polyethylene terephthalate film or a laminated polyvinyl alcohol film or wafer. The polarized optical part has improved impact resistance over conventional thermoset resin parts, as well as better optical properties than similarly impact-resistant polycarbonate constructs.
Type:
Application
Filed:
March 13, 2001
Publication date:
October 11, 2001
Applicant:
Younger Mfg. Co., DBA Younger Optics
Inventors:
Russell E. Evans, Thomas A. Balch, Nanoy L.S. Yamasaki
Abstract: A device for demonstrating the effect of glare and its reduction in which light is reflected onto a glare panel, to reflect therefrom at an angle of incidence such that it is horizontally polarized, producing glare to one viewing an underlying graphic but which glare is eliminated by viewing through vertically polarized lenses.
Type:
Grant
Filed:
February 16, 1999
Date of Patent:
September 5, 2000
Assignee:
Younger Mfg. Company
Inventors:
Thomas Balch, Russell E. Evans, Gregory Alan Rook, Nancy L. S. Yamasaki