Optical communications – Photophone – Specific transducer
Reexamination Certificate
2007-10-02
2007-10-02
Pascal, Leslie (Department: 2613)
Optical communications
Photophone
Specific transducer
C398S132000
Reexamination Certificate
active
10416227
ABSTRACT:
A fine displacement detection device by sound or the like: which can easily align individual optical components; which disposes a light emitting element (13) and a light receiving element (14) on a substrate, emits light from the light emitting element (13) to a diaphragm (I) set at a position facing the substrate, receives light reflected from the diaphragm (1) by the light receiving element (14), and detects as an electric signal the fine displacement of the diaphragm (1) by sound or the like; and which provides, on the optical paths of the substrate and the diaphragm (1), a focusing element (2) that focuses an incidence light from the light emitting element (13) for leading to the diaphragm (1) and focuses a diverged/reflected light from the diaphragm (1) for leading to the light receiving element (14), and a reflected light flux dividing element (3) that divides the diverged/reflected light focused by the focusing element (2) for leading to the light receiving element (14).
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International Search Report dated Feb. 5, 2002.
Notification of Examiner Refusal Reason, JP 2000-344107, Japanese Patent Office, Oct. 7, 2003.
Kabushiki Kaisha Kenwood
Pascal Leslie
Robinson Intellectual Property Law Office P.C.
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