Invention Grant
- Patent Title: Method for thermostable and lightfast dichroic light polarizers
- Patent Title (中): 耐高温和耐光二色光偏振器的方法
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Application No.: US08998254Application Date: 1997-12-24
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Publication No.: US06174394B1Publication Date: 2001-01-16
- Inventor: Khan Ir Gvon , Yuri A. Bobrov , Victor A. Bykov , Leonid Y. Ignatov , Tatiana D. Ivanova , Sergei I. Popov , Elena Y. Shishkina , Georgiy N. Vorozhtsov
- Applicant: Khan Ir Gvon , Yuri A. Bobrov , Victor A. Bykov , Leonid Y. Ignatov , Tatiana D. Ivanova , Sergei I. Popov , Elena Y. Shishkina , Georgiy N. Vorozhtsov
- Priority: RU93027586 19930521; WOPCT/US94/05493 19940520
- Main IPC: B32B3500
- IPC: B32B3500

Abstract:
Polarizing coatings are formed from dyestuffs which provide a stable liquid crystalline phase in a wide range of concentrations, temperatures and pH-values. Particles formed by aggregates of the liquid crystal molecules are oriented in a predetermined direction to polarize light. The stability of the liquid crystalline state allows orienting the particles by mechanical forces such as a shearing force applied when the liquid crystal (10) is spread on a support surface (20) by a knife-like doctor (90) or a tension deformation force acting on the meniscus of the liquid crystal deposited between two surfaces (20, 30) as the surfaces are peeled off one another. As a result, the polarizing coatings are formed in some embodiments by simple methods. In some embodiments, the polarizing coatings have a high lightfastness, a high thermal stability, and a high dichroic ratio.
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