Simple systems for light beam modulation by acoustic surface wav

Details Simple systems for light beam modulation by acoustic surface wav Simple systems for light beam modulation by acoustic surface wav

1974-12-23

1976-12-21

Corbin, John K.

Measuring and testing

Moisture content or absorption characteristic of material

350285, G01H 100

Patent

active

039980928

ABSTRACT:
A simple system is described which makes surface vibrations apparent by mechanical deviation of a light beam. The system comprises two or more U springs which are fastened to the vibrating surface and which mechanically amplify the vibrations thus creating large beam deviations from small surface vibrations that occur at mechanical resonance frequencies of the U spring system.

REFERENCES:
patent: 2143011 (1939-01-01), De Juhasz
patent: 3909135 (1975-09-01), Lipkind

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