Light valve containing improved light valve suspension
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United States of America Patent
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Jan 27, 1981
Issued Date -
N/A
app pub date -
Oct 31, 1978
filing date -
Oct 31, 1978
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a light valve comprising a liquid suspension of small particles selected from the group consisting of halogenated alkaloid acid salts and metal halides in a liquid suspending medium, the improvement in which said liquid suspending medium comprises a liquid, saturated, aliphatic halogenated hydrocarbon having a ratio of halogen atoms to all other atoms therein of greater than 1:1, the halogen atoms of said particles being iodine and/or bromine and the halogen atoms of said halogenated hydrocarbon being of lower atomic weight than the halogen atoms of said particles, and at least 50% the halogen atoms of said halogenated hydrocarbon being selected from the group consisting of fluorine and chlorine.
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