Laser microphone

Details Laser microphone Laser microphone

1982-11-26

1984-10-23

Orsino, Jr., Joseph A.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

179121R, H04B 900

Patent

active

044792654

ABSTRACT:
The invention is a laser microphone in which two aligned beams of laser light, of which one beam is slightly delayed in relation to the other beam of the same frequency and is reflected by an object in motion, to produce intensity variation that vary as a function of the movements of the reflecting object.

REFERENCES:
patent: 1709762 (1929-04-01), Zworykin
patent: 3470329 (1969-09-01), Young
patent: 3622791 (1971-11-01), Bernard
patent: 4361911 (1982-11-01), Buser et al.
patent: 4422182 (1983-12-01), Kenjyo
The Michelson Interferometer, Fizeau Air Wedge Experiment described in Physical Education by P. W. Fish, Jan. 1971.

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