Method for projecting image obtained by using liquid crystal panels semiconductor substrate and display apparatus for realizing the same
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
Mar 18, 1992
filing date -
Mar 19, 1991
priority date (Note) -
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status (Latency Note)
Importance
Abstract
In a projection-type display apparatus using light scattering type liquid crystal devices, light from a light source is reflected by a reflecting mirror through a collecting lens; reflected light is converted by a lens into a parallel light beam, which is injected into liquid crystal devices disposed on three sides through a dichroic mirror, the liquid crystal devices coloring an image in red, green and blue; the image is projected on a screen through again the dichroic mirror, the collecting lens and an enlarging lens. Further a photodetector is disposed at a focal point of the collecting lens and a function of adjusting the position of the light source on the basis of a result of this detection is added.
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Cited Art Landscape
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