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Dual membrane single cavity Fabry-Perot MEMS filter

  • US 7,420,738 B2
  • Filed: 12/22/2003
  • Issued: 09/02/2008
  • Est. Priority Date: 12/22/2003
  • Status: Expired due to Fees
First Claim
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1. A single cavity dual membrane Fabry-Perot filter comprising:

  • a first membrane device comprising;

    a first membrane holding a first mirror structure, a first substrate for supporting the first membrane and defining a first electrostatic cavity between the first membrane and the first substrate, an electrostatic voltage between the first membrane and the first substrate causing deflection of the first membrane relative to the first substrate; and

    a second membrane device comprising;

    a second membrane holding a second mirror structure, which is opposed the first mirror structure, to thereby define a Fabry-Perot cavity between the first mirror structure and the second mirror structure, a second substrate for supporting the second membrane and defining a second electrostatic cavity between the second membrane and the second substrate, an electrostatic voltage between the second membrane and the second substrate causing deflection of the second membrane relative to the second substrate.

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