Optical position sensor using Kerr effect and a magnetic scale

Details Optical position sensor using Kerr effect and a magnetic scale Optical position sensor using Kerr effect and a magnetic scale

1988-11-21

1990-06-05

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

324260, 32420713, 25022717, 25023113, 360114, G02F 101, G01D 534, G01B 714

Patent

active

049316346

ABSTRACT:
An optical position sensor of aircraft comprises light emitting means, an optical block, and a movable magnetic scale disposed in opposed relationship to the optical block. The sensor further comprises first optical wave guiding means connected at its one end to the light emitting means, polarizing means connected at its one end directly to the other end of the first optical wave guiding means and connected at its other end directly to one end of the optical block, and polarization detecting means connected at its one end directly to the other end of the optical block. The sensor further comprises second optical wave guiding means connected at its one end directly to the other end of the polarization detecting means, and opto-electric converting means connected to the other end of the second optical guiding means.

REFERENCES:
patent: 3453614 (1969-07-01), Bose
patent: 4618901 (1986-10-01), Hatakeyama et al.
patent: 4654837 (1987-03-01), Browder
patent: 4677513 (1987-06-01), Naito
patent: 4695796 (1987-09-01), Omet et al.
patent: 4730289 (1988-03-01), Saitoh et al.
patent: 4746791 (1988-05-01), Forkel
patent: 4777553 (1988-10-01), Aoi et al.

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