Optical: systems and elements – Polarization without modulation – By relatively adjustable superimposed or in series polarizers
Patent
1997-12-19
1999-10-26
Vargot, Mathieu D.
Optical: systems and elements
Polarization without modulation
By relatively adjustable superimposed or in series polarizers
264 134, 264108, 2642896, G02B 100, B29D 1100
Patent
active
059738340
ABSTRACT:
A method is provided for the manufacture of a polyvinylidene-based light polarizer (cf., a "K Sheet"-type polarizer). In one embodiment, the polyvinylidene chromophore of said polarizer is produced by the acid catalyzed dehydration of an oriented polymeric starting material, the acid catalyst being introduced in the method as a bonding agent used to secure the starting material to a carrier web (or other supporting substrate). Advantages of the method include reduced frequency of "streaking" and "mottling"; good processing speed; and the ability to use a low acid concentration, resulting in a correspondingly low-corrosion processing environment.
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Kadaba Narendra S.
Shah Lori P.
de Luna Renato M.
Polaroid Corporation
Vargot Mathieu D.
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