Fabry-Perot interferometer
First Claim
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1. A device, comprising;
- a FP (Fabry-Perot) interferometer comprising a top plate, a bottom plate, and a resonant cavity defined between the top plate and the bottom plate wherein the top plate is suspended with respect to the bottom plate so that the top plate is relatively movable with respect to the bottom plate;
a first electromechanical transducer which is associated with the top and bottom plates and which induces a first relative displacement between the top and bottom plates, when energized; and
a second electromechanical transducer which is associated with the bottom plate and which induces a second relative displacement between the top and bottom plates which is substantially independent of the first relative displacement, when energized.
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Abstract
A method of tuning a resonant cavity of an FP (Fabry-Perot) interferometer in a DLD (diffractive light device) MEMS (microelectromechanical system) device, wherein the FP interferometer has a top plate and a bottom plate, and wherein the method comprises; using first and second electromechanical transducers to independently change a distance between the top and bottom plates of the FP interferometer.
25 Citations
24 Claims
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1. A device, comprising;
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a FP (Fabry-Perot) interferometer comprising a top plate, a bottom plate, and a resonant cavity defined between the top plate and the bottom plate wherein the top plate is suspended with respect to the bottom plate so that the top plate is relatively movable with respect to the bottom plate; a first electromechanical transducer which is associated with the top and bottom plates and which induces a first relative displacement between the top and bottom plates, when energized; and a second electromechanical transducer which is associated with the bottom plate and which induces a second relative displacement between the top and bottom plates which is substantially independent of the first relative displacement, when energized. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method of tuning a resonant cavity of an FP (Fabry-Perot) interferometer in a DLD (diffractive light device) MEMS (microelectromechanical system) device, wherein the FP interferometer has a top plate and a bottom plate, and wherein the method comprises;
using first and second electromechanical transducers to independently change a distance between the top and bottom plates of the FP interferometer. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. An apparatus for fine tuning a resonant cavity of an FP (Fabry-Perot) interferometer in a DLD (diffractive light device) MEMS (microelectromechanical system) device, comprising;
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FP interferometer means including a top plate and a bottom plate; and first and second electromechanical transducer means for independently changing a distance between the top and bottom plates of the FP interferometer. - View Dependent Claims (22, 23, 24)
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Specification