Fiber optical luminescence sensor for measuring mechanical displ

Details Fiber optical luminescence sensor for measuring mechanical displ Fiber optical luminescence sensor for measuring mechanical displ

1983-01-31

1985-12-24

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231R, G02B 514

Patent

active

045608687

ABSTRACT:
A fiber optical measuring apparatus suitable for measuring physical quantities such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprises at least one optical fiber for conducting incident light between an electronic unit and a sensor, the sensor comprising at least one luminescent element. The measuring apparatus is characterized in that the physical quantity to be measured is arranged to influence the position of an optical spectral filter, for example of absorption or interference type, relative to the optical fiber in the sensor and/or relative to said luminescent element, and that said spectral filter is arranged to be situated, to a greater or lesser extent, between the end surface of the optical fiber and at least one of the luminescent elements.

REFERENCES:
patent: 4342919 (1982-08-01), Brogardh
patent: 4356396 (1982-10-01), Ruell et al.
patent: 4356448 (1982-10-01), Brogardh et al.
patent: 4376890 (1983-03-01), Engstrom et al.

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