Method for the manufacture of a light-polarizing polyvinylene sh

Details Method for the manufacture of a light-polarizing polyvinylene sh Method for the manufacture of a light-polarizing polyvinylene sh

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.

REFERENCES:
patent: 2173304 (1939-09-01), Land et al.
patent: 2255940 (1941-09-01), Rogers
patent: 2306108 (1942-12-01), Land et al.
patent: 2445555 (1948-07-01), Binda
patent: 2674159 (1954-03-01), Binda
patent: 3914017 (1975-10-01), Bedell et al.
patent: 5666223 (1997-09-01), Bennett et al.

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