PROJECTION-TYPE LIQUID CRYSTALLINE PROJECTOR.

摘要

A projector for synthesizing and projecting an image of three primary colors formed by liquid-crystal light bulbs, wherein deviation in pixels and color shading are improved by correcting errors of the position and angles of mounting the liquid-crystal light bulbs and by eliminating effects on parts caused by the heat of the source of light. For this purpose, there are arranged a plurality of dichroic mirrors, for separating white light into three primary colors, liquid-crystal light bulbs of the three primary colors, and a dichroic mirror for synthesizing the image. The liquid-crystal light bulb of one color is arranged at a central portion of the housing, and the liquid-crystal light bulbs of the remaining two colors are arranged symmetrically with respect to the first one. Pixels of the two symmetrical liquid-crystal light bulbs are adjusted for their positions relative to each other with respect to pixels of liquid-crystal light bulb in the center.