Liquid crystal projector.

摘要

A liquid crystal display unit (8) comprising a condenser lens, incident-side polarizing plate (5), liquid crystal panel (2) and emanating-side polarizing plate (6) is disposed in an optical path from a light source toward a projection lens. A cooler (3) comprising a closed flat platelike glass container (30) and a refrigerant (34) enclosed in the container with a vacuum space (35) 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 (5) and the liquid crystal panel (2) are prevented from overheating by the spontaneous convection and evaporation of the refrigerant and the condensation thereof within the space (35).