Liquid crystal light valve apparatus with a pair of non-parallel

Details Liquid crystal light valve apparatus with a pair of non-parallel Liquid crystal light valve apparatus with a pair of non-parallel

1994-04-19

1996-02-06

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 40, G02F 11335

Patent

active

054900069

ABSTRACT:
In a liquid crystal light valve apparatus comprising an incident side polarizing plate, a twisted nematic liquid crystal cell of active matrix type and an outgoing side polarizing plate, two phase difference plates are provided between the incident side polarizing plate and the liquid crystal cell. Optical axes of both the phase difference plates are perpendicular with each other, and one of them is slanted by an angle, and thereby, a phase difference which is caused by the liquid crystal cell is compensated by the phase difference caused by two phase difference plates.

REFERENCES:
patent: 5150235 (1992-09-01), Haim et al.
patent: 5189538 (1993-02-01), Arakawa
patent: 5264879 (1993-11-01), Skikama
patent: 5369513 (1994-11-01), Akatsuka et al.
patent: 5375006 (1994-12-01), Haas

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