Liquid crystal projector

Details Liquid crystal projector Liquid crystal projector

1990-10-10

1991-07-16

Cuchlinski, Jr., William A.

Optics: image projectors

Temperature control

Liquid coolant

353 52, 350331R, G03B 2116

Patent

active

050320211

ABSTRACT:
A liquid crystal display unit comprising a condenser lens, incident-side polarizing plate, liquid crystal panel and emanating-side polarizing plate is disposed in an optical path from a light source toward a projection lens. A cooler comprising a closed flat platelike glass container and a refrigerant enclosed in the container with a vacuum space of specified volume left therein is joined to each of the incident-side polarizing plate and the liquid crystal panel over an effective image area. The incident-size polarizing plate and the liquid crystal panel are prevented from overheating by the spontaneous convection and evaporation of the refrigerant and the condensation thereof within the space.

REFERENCES:
patent: 4029393 (1977-06-01), Dungan et al.
patent: 4064919 (1977-12-01), Stern et al.
patent: 4643525 (1987-02-01), Haim
patent: 4848875 (1989-07-01), Baughman et al.

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