Ultrasonic transducer and parametric speaker including the same
AssigneeMurata Manufacturing Co., Ltd.
InventorHironari Yamamoto
Life of this patent
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Abstract
An ultrasonic transducer includes a first diaphragm, one or more frame bodies, and one or more ultrasonic vibrators. The one or more frame bodies extend in a length direction and are bonded to the first diaphragm. The one or more ultrasonic vibrators are attached to the one or more frame bodies, respectively, and face the first diaphragm with a space therebetween. The first diaphragm is structured to resonate and vibrate in a direction orthogonal or substantially orthogonal to the first diaphragm in a phase opposite to a phase of the one or more ultrasonic vibrators. A dimension in the length direction inside the one or more frame bodies is equal to or greater than four times a dimension in a width direction orthogonal to the length direction inside the one or more frame bodies.
Claims20
An ultrasonic transducer, comprising:
- a first diaphragm;
- one or more frame bodies extending in a length direction and bonded to the first diaphragm;
- and
- one or more ultrasonic vibrators attached to the one or more frame bodies, respectively,
- and facing the first diaphragm with a space therebetween;
- wherein
- the first diaphragm is structured to resonate and vibrate in a direction orthogonal or substantially orthogonal to the first diaphragm in a phase opposite to a phase of the one or more ultrasonic vibrators;
- and
- a dimension in the length direction inside the one or more frame bodies is equal to or greater than four times a dimension in a width direction orthogonal or substantially orthogonal to the length direction inside the one or more frame bodies.
Dependencies are inferred from the claim text.