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:
Sep. 15, 2015
Filed:
Oct. 04, 2011
Ludmila Sukhomlinova, Kent, OH (US);
Volodymyr Bodnar, Kent, OH (US);
Christine Martincic, Cuyahoga Falls, OH (US);
Linli Su, Cupertino, CA (US);
Bahman Taheri, Shaker Heights, OH (US);
Tamas Kosa, Hudson, OH (US);
Ludmila Sukhomlinova, Kent, OH (US);
Volodymyr Bodnar, Kent, OH (US);
Christine Martincic, Cuyahoga Falls, OH (US);
Linli Su, Cupertino, CA (US);
Bahman Taheri, Shaker Heights, OH (US);
Tamas Kosa, Hudson, OH (US);
ALPHAMICRON INCORPORATED, Kent, OH (US);
Abstract
We describe a wide band variable transmission optical device, mixtures for use in such a device, and methods of making the same. The wide band optical device includes a cell comprising a guest-host mixture of a liquid crystal host and a dichroic guest dye material contained between a pair of plastic substrates. The optical device does not use polarizers. The liquid crystal host has an axis orientation that is alterable between a clear state orientation and a dark state orientation perpendicular thereto and the dichroic guest dye material includes one or more dichroic dyes. The optical device is characterized in that it exhibits a wide absorption band that is greater than 175 nm within a visible wavelength range of 400-700 nm and has a clear state transmission equal to or above 30% and a dark state transmission equal to or below 40%.