Electrostatic device for gating electromagnetic radiation
Light control device Patent #: 4248501
ApplicationNo. 06/415414 filed on 09/07/1982
US Classes:359/290, By changing physical characteristics (e.g., shape, size or contours) of an optical element359/231, String or ribbon type359/291Shape or contour of light control surface altered
ExaminersPrimary: Corbin, John K.
Assistant: Dzierzynski, Paul M.
Attorney, Agent or Firm
International ClassG09F 9/37 (20060101)
AbstractAn electrostatic device has a fixed electrode and a flexible-sheet-variable electrode mounted adjacent thereto and insulated therefrom. Fixedly spaced from a portion of the variable electrode is a third electrode to provide a fixed capacity therebetween. A voltage applied between the fixed and third electrode activates the device, and direct ohmic contact to the delicate variable electrode is not necessary.