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US 9,667,173 B1Granted
Electrostatic parametric transducer and related methods
AssigneeTurtle Beach Corporation
InventorsBrian Alan Kappus, Mark W. Norris, Elwood Grant Norris
Life of this patent
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Abstract
An electrostatic ultrasonic transducer includes a first conductive layer; a second conductive layer spaced apart from the first conductive layer; and a third conductive layer disposed between the first and second conductive layers, the third conductive layer being spaced apart from the first conductive layer and in physical contact with a part of the second conductive layer.
Claims40
An ultrasonic transducer, comprising:
- a first conductive element comprising first and second major surfaces;
- a second conductive element comprising first and second major surfaces and textural features formed on the first major surface of the second conductive element and arranged in spaced apart relation to the first conductive element with the first major surface of the second conductive element facing toward the first conductive element;
- and
- a third conductive element comprising first and second major surfaces and positioned between the first and second conductive elements such that the third conductive element does not contact the first conductive element and the second major surface of the third conductive element physically contacts at least some of the textural features of the second conductive element and forms a resonant cavity, wherein the third conductive element comprises an insulating layer and a conducting layer and wherein the third conductive element is oriented such that the insulating layer is disposed between the conducting layer and the second conductive element.
1 more element
An ultrasonic transducer, comprising:
- a first conductive element comprising first and second major surfaces;
- a second conductive element comprising first and second major surfaces and arranged in spaced apart relation to the first conductive element with the first major surface of the second conductive element facing toward the first conductive element;
- and
- a third conductive element comprising first and second major surfaces and positioned between the first and second conductive elements, wherein the third conductive element comprises an insulating layer and a conducting layer and wherein the third conductive element is oriented such that the insulating layer is disposed between the conducting layer and the second conductive element;
- and
- a plurality of first spacers disposed between the second and third conductive elements and configured in touching relation to the second and third conductive elements.
3 more elements
An ultrasonic transducer, comprising:
- a transformer comprising first and second inputs and first, second and third outputs, a first winding between the first and second inputs, a second winding between the first and second outputs and a third winding between the second and third outputs;
- an ultrasonic audio transducer, comprising:
- a first stator electrically connected to the first output of the transformer;
- a second stator arranged in spaced apart relation to the first stator and electrically connected to the third output of the transformer;
- a conductive element positioned between the first and second stators and electrically connected to the second output of the transformer, the conductive element disposed such that it is at a first spacing from the first stator and a second spacing from the second stator, wherein the second spacing is less than the first spacing and wherein a ratio of the number of turns in the second winding to the number of turns in the third winding is proportional to the first and second spacings;
- and
- a plurality of textural features disposed between and in touching relation to the conductive element and the second stator;
- and
- a bias source coupled between the second output of the transformer and the conductive element.
6 more elements
Dependencies are inferred from the claim text.