Electronically tunable polarization-independent liquid crystal o

Details Electronically tunable polarization-independent liquid crystal o Electronically tunable polarization-independent liquid crystal o

1990-08-31

1991-11-26

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 94, 356352, G02F 1133

Patent

active

050687492

ABSTRACT:
By utilizing a twisted nematic liquid material in a Fabry-Perot etalon, an electronically turnable polarization-insensitive optical filter is realized. In particular, the twist imparted to the molecules of the liquid crystal material is established at n.pi./2, where n is a positive odd integer.

REFERENCES:
patent: 4630898 (1986-12-01), Jewell
patent: 4779959 (1988-10-01), Saunders
patent: 4790634 (1988-12-01), Miller et al.

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