Ferroelectric liquid crystal tunable filters and color generatio

Details Ferroelectric liquid crystal tunable filters and color generatio Ferroelectric liquid crystal tunable filters and color generatio

1990-05-11

1992-07-21

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 53, 359 56, 359 63, 359 73, G02F 113

Patent

active

051328267

ABSTRACT:
Discretely and continuously tunable filers emplying FLC cells are provided. Exemplary discretely tunable filters employ bistable smectic C* FLC cells. Exemplary continuously tunable filters employ smectic A* FLC cells. Single or multiple stage filters are provided. Blocking filters useful for color generation are also provided. The FLC filters provided can be temporally multiplexed.

REFERENCES:
patent: 4838663 (1989-06-01), Lagerwall et al.
Carrington et al. (1989) Second Internaitonal Conference on Ferroelectric Liquid Crystals Program and Abstracts; Abstract No. 015.
Andersson et al. (1987) Appl. Phys. Lett vol. 51:640 "Submicrosecond electro-optic switching in LC smectic A phase: The solf mode ferroelectric effect", Appl. Phys. Lett. vol. 51 No. 9, 1987 pp. 640-642.
Title et al. "Tunable birefringent networks" SPIE vol. 202 Active optical device, 1979.
Lagerwall "Ferroelectric LCs: The developement of device", Gordon and Breach Science Publishers S.A., vol. 94, pp. 3-62, 1989.
Andersson et al. (1989) J. Appl. Physics 66(10):4983-4995.
Andersson et al. Application of the Soft Mode Ferroelectric Effect MIeeting Abstract from the Second INternational Conference on FLCs held in Goeteborg Sweden, 1989.
Masterson et al., "Ferroelectric liquid crystal tunable filter" Optics letters vol. 14 No. 22, 1989 pp. 1249-1251.

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