Reflection type liquid crystal display apparatus which prevents

Details Reflection type liquid crystal display apparatus which prevents Reflection type liquid crystal display apparatus which prevents

1993-12-02

1995-10-17

Gross, Anita Pellman

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 65, 359 33, G02F 11335, G03B 2100

Patent

active

054595932

ABSTRACT:
A reflecting type liquid crystal display apparatus which can prevent an unnecessary rotation of the plane of polarization in a polarizing prism. The apparatus has: a reflecting type liquid crystal device for changing a polarizing state in accordance with an image, thereby reflecting an incident light; and a polarizing prism 50 for emitting the light of a predetermined polarized component in the incident light from a light source at a surface of polarization operation, for inputting the emitted light into the reflecting type liquid crystal device, for emitting the light of a predetermined polarized component in the incident light from the reflecting type liquid crystal device, thereby obtaining a projection image. A plate for compensating the polarizing state having a surface in an oblique direction different from an oblique direction of the surface of polarization operation and also having a predetermined phase difference is arranged in an optical path between the reflecting type liquid crystal device and the polarizing prism.

REFERENCES:
patent: 4127822 (1978-11-01), Jacobson et al.
patent: 4827334 (1989-05-01), Johnson et al.
patent: 5327270 (1994-07-01), Miyatake

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