Laser sensor with encoded laser output signal

Details Laser sensor with encoded laser output signal Laser sensor with encoded laser output signal

1986-09-23

1988-06-14

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73653, 372 20, G01D 534, H01S 310

Patent

active

047513829

ABSTRACT:
A transducer defined by a laser is set forth. Strain, movement, velocity, temperature, pressure, and vibration coupled to the laser change the lasing frequency or form a Doppler shift. The laser is thus installed at a specified location to couple a measured phenomenon and thereby enable transmission of the encoded variable in the laser beam. A receiver located remote from the laser picks up the beam for data retrieval.

REFERENCES:
patent: 3373401 (1968-03-01), Bayer
patent: 3517329 (1970-06-01), De Lang et al.
patent: 3675157 (1972-07-01), Kaminow et al.

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