Patent classifications
G
PHYSICS
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G02
OPTICS
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G02B
OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
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26/00
Optical devices or arrangements for the control of light using movable or deformable optical elements
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G02B26/02
for controlling the intensity of light
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G02B26/026
based on the rotation of particles under the influence of an external field, e.g. gyricons, twisting ball displays
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