Electroacoustic converter
First Claim
1. An electroacoustic transducer, comprising:
- one or a plurality of magnet plates, an entirety of which are formed like a disk or a ring, and each of the magnet plates having a plurality of partial areas each magnetized in a magnetizing direction; and
an acoustic diaphragm disposed parallel to said magnet plates and having a conductor formed on a surface of the acoustic diaphragm and configured to vibrate in a vibration plane of the acoustic diaphragm;
wherein the magnetizing direction of each of the plurality of partial areas has a component of the magnetizing direction oriented in a direction parallel to a center axis or a radius direction of said magnet plates, and angles formed by said magnetizing directions of the plurality of partial areas with respect to the vibration plane of said acoustic diaphragm gradually differ from each other in accordance with a distance from the center axis of said magnet plates.
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Accused Products
Abstract
An electroacoustic transducer 20, such as a speaker, a headphone, an earphone, a microphone, an acoustic wave sensor, etc., includes magnet plates 21 and 22, the entirety of which are formed like a disk or a ring; and an acoustic diaphragm 23 disposed parallel to said magnet plates 21 and 22 and having a conductor formed on the plane thereof; wherein a component parallel to the vibration plane of said acoustic diaphragm 23 is zero or in the radius direction of said magnet plates 21 and 22 in the direction of magnetizing respective partial areas of said magnet plates 21 and 22, and angles formed by said magnetizing direction with respect to the vibration plane of said acoustic diaphragm 23 are made gradually different from each other in accordance with the distance from the center axis of said magnet plates 21 and 22.
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Citations
9 Claims
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1. An electroacoustic transducer, comprising:
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one or a plurality of magnet plates, an entirety of which are formed like a disk or a ring, and each of the magnet plates having a plurality of partial areas each magnetized in a magnetizing direction; and an acoustic diaphragm disposed parallel to said magnet plates and having a conductor formed on a surface of the acoustic diaphragm and configured to vibrate in a vibration plane of the acoustic diaphragm; wherein the magnetizing direction of each of the plurality of partial areas has a component of the magnetizing direction oriented in a direction parallel to a center axis or a radius direction of said magnet plates, and angles formed by said magnetizing directions of the plurality of partial areas with respect to the vibration plane of said acoustic diaphragm gradually differ from each other in accordance with a distance from the center axis of said magnet plates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification