Fiber optic displacement transducer with dichroic target

Details Fiber optic displacement transducer with dichroic target Fiber optic displacement transducer with dichroic target

1987-12-14

1989-01-17

Evans, F. L.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356373, 250231R, G01B 1100

Patent

active

047989513

ABSTRACT:
A fiber optic displacement transducer is provided by a fiber optic reflective probe (2), and an axially moveable target (4) having a dichroic optical filter (16) with first and second reflection surfaces (20 and 24) axially spaced by a fixed distance t and reflecting different wavelength light.

REFERENCES:
patent: 4342919 (1982-08-01), Brogardh
patent: 4356396 (1982-10-01), Ruell et al.
patent: 4514860 (1985-04-01), Adolfsson
patent: 4523092 (1985-06-01), Nelson
patent: 4529875 (1985-07-01), Brogardh et al.
patent: 4554449 (1985-11-01), Taniuchi et al.
patent: 4670649 (1987-06-01), Senior et al.
patent: 4703175 (1987-10-01), Salour et al.
James Capobianco and Joseph Rando, "Applications of An Injection Molded Bidirectional Active Coupler", ADC Fiber Optics, pp. 1-12.
Harold Roberts and Joseph Rando, "WDM Active Coupler for Bidirectional Transmission", ADC Fiber Optics, pp. 1-11.
"Fiber-Optic Instrument for Temperature Measurement", Kazuo Kyuma, S. Tai, T. Sawada and M. Nunoshita, IEEE Journal of Quantum Electronics, vol. QE-18, No. 4, Apr. 1982, pp. 676-679.

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