Multimode optical fiber accelerometer

Details Multimode optical fiber accelerometer Multimode optical fiber accelerometer

1983-07-11

1986-06-17

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

73517R, 250231R, G01D 534, G01P 1508

Patent

active

045958300

ABSTRACT:
An apparatus for sensing acceleration utilizes a multimode input optical fiber to provide an output of light which passes through a grating, and is collimated by a grinrod lens. The collimated light is reflected from a double faceted reflecting surface in two beams. Absent acceleration, the two beams are focussed by the grinrod lens onto portions of the grating covering, respectively, the input faces of two multimode output optical fibers, and provide 1/2 the maximum possible amount of light to each of the output optical fibers, with a balanced output. In response to acceleration, the reflection surface tilts, the beams move, and the outputs of the output optical fibers change, representing the acceleration.

REFERENCES:
patent: 3073168 (1963-01-01), Adams et al.
patent: 3789674 (1974-02-01), Anderson et al.
patent: 3961185 (1976-06-01), Brokenshire et al.
patent: 4223216 (1980-09-01), Quick et al.
patent: 4239963 (1980-12-01), August et al.
patent: 4414471 (1983-11-01), Rines

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