Projection video display systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 31, 1995
Grant Date -
N/A
app pub date -
Nov 12, 1992
filing date -
Apr 9, 1990
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A projection system of the kind in which beams of light are projected by a projector onto a screen and the beams are modulated by electronic video information is characterized in that means are provided to vary the intensity of the light falling on different parts of the screen so that to an observer viewing the screen the said light intensity will be perceived as being substantially uniform over substantially the whole are of the screen.
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Family
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Cited Art Landscape
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