发明授权
US06188462B1 Diffraction grating with electrically controlled periodicity 失效
具有电控周期性的衍射光栅

Diffraction grating with electrically controlled periodicity
摘要:
The present invention is directed to liquid crystal diffraction gratings with electrically controlled periodicity. An electrical field is applied to liquid crystal device wherein the liquid crystals align to form a diffraction grating. The period of the diffraction grating is varied by changing the applied electrical field. The diffraction grating therefore has a period that can be varied by an electrical field.
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