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2 047 944

(13)

C1

(51)

IPC

(21) (22)

Application

4528644/10, 1990-03-27

(22)

Actual filing date

1990-03-27

(45)

Published

1995-11-10

(72)

Inventor

Katanovich A.A.Shitov B.V.

(73)

Holder

Vojskovaja Chast'

OPTICAL MICROPHONE Russian patent published in 1995 - IPC

Abstract RU 2047944 C1

FIELD: acoustics. SUBSTANCE: optical microphone has case, membrane attached around periphery of case, source of monochromatic radiation, focusing lens, phorodetector. Longitudinal grooves where fibre-optical light guide is placed are made in inner surface of membrane. Grooves are covered by film. Source of monochromatic radiation and focusing lens are positioned opposite to first lead of fibre-optical light guide. Photodetector is put opposite to second lead of fibre-optical light guide. EFFECT: simplified design, enhanced reliability and efficiency. 4 dwg

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RU 2 047 944 C1

Authors

Katanovich A.A.

Shitov B.V.

Dates

1995-11-10—Published

1990-03-27—Filed

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