Diaphragm structure of light sound converter

Details Diaphragm structure of light sound converter Diaphragm structure of light sound converter

2002-06-13

2008-08-26

Young, Wayne (Department: 2627)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S184000, C381S395000, C381S424000, C381S429000, C181S161000, C181S167000

Reexamination Certificate

active

07418109

ABSTRACT:
A diaphragm (1) of a light sound converter which has a high performance, is suitable for mass-production and has a slit (1s) formed therein. A light emitting element and a light receiving element are disposed at positions opposed to a reflective part (1a) of the diaphragm (1) having a pressure receiving surface part (1d) and the reflective part (1a), and light is radiated from the light emitting element to the reflective part (1a) of the diaphragm (1) and the reflected light from the reflective part (1a) is received by the light receiving element, whereby the position of the diaphragm (1) can be detected.

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International Search Report.
Examiner Office Action dated Aug. 22, 2006 for Application No. JP 2001-184530.
Supplementary European Search Report (Application No. 02738682.0) Dated May 28, 2008.

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