Tunable color filter
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United States of America Patent
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-
Nov 18, 1997
Grant Date -
N/A
app pub date -
Mar 22, 1995
filing date -
Mar 22, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A color filter having an optical switch element located between a neutral linear polarizer and a second color-selective linear polarizer, followed by one or more optical retarders and a second neutral linear polarizer. When a second optical switch element is incorporated, three color states are produced. The filter may also comprise a guest host type cell as the optical switch element. The resulting color filter exhibits high performance both for on-axis and off-axis rays and can be designed to produce a wide range of colors.
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Cited Art Landscape
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