US PATENT SUBCLASS 349 / 105
.~.~.~ Interference filter

Current as of: June, 1999
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349 /   HD   LIQUID CRYSTAL CELLS, ELEMENTS AND SYSTEMS

56  DF  PARTICULAR STRUCTURE {7}
84  DF  .~ Having significant detail of cell structure only {17}
104  DF  .~.~ Filter {3}
105.~.~.~ Interference filter

DEFINITION

Classification: 349/105

Interference filter:

(under subclass 104) Subject matter wherein two light waves, as a result of their relative phases, interact to produce a cancellation or reinforcement of wave energy.