Optical sensor of physical magnitude

Details Optical sensor of physical magnitude Optical sensor of physical magnitude

1989-02-09

1990-02-06

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250231P, 73705, G01L 124, G01L 1300

Patent

active

048990469

ABSTRACT:
An optical sensor for measuring physical magnitudes, such as a differential pressure, is described. The pressure sensor comprises a deformable diaphragm (24) which separates two measurement chambers (26,28) where pressures P1 and P2 exist. An optical conductor (34) is attached to the diaphragm (24). A light source (40) allows a light beam to be radiated towards the conductor (34). An optoelectrical converter (42) performs a detection of the light energy (1) output from the light guide (34), and thus of the difference between both pressures (P1,P2).

REFERENCES:
patent: 4342907 (1982-08-01), Macedo et al.
patent: 4463254 (1984-07-01), Asawa et al.
patent: 4634858 (1987-01-01), Gerdt et al.
patent: 4654520 (1987-03-01), Griffiths
patent: 4701614 (1987-10-01), Jaeger et al.

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