Fiber optical measurement apparatus

Details Fiber optical measurement apparatus Fiber optical measurement apparatus

1979-05-29

1981-07-28

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250205, G02B 514

Patent

active

042812453

ABSTRACT:
The invention relates to an optical measuring device for measuring physical magnitudes such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprising at least one optical fiber for conducting light between an electronic unit and a transducer forming an optical modulator which is directly or indirectly influenced by the quantity being measured and, in dependence thereon, modulates the light emitted to the transducer. The transducer contains at least one optical filter having spectrally varying absorbing and/or transmitting and/or reflecting characteristics within the spectra of the emitted light. The light filter generates one or more stabilizing signals for the fiber optic and optoelectronics, and possibly one or more measurement signals within one or more wavelength ranges.

REFERENCES:
patent: 3709612 (1973-01-01), Clemens
patent: 3945731 (1976-03-01), Graser
patent: 4045667 (1977-08-01), Hanson

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