Fiber optic range finder systems

Details Fiber optic range finder systems Fiber optic range finder systems

1985-08-21

1987-03-31

Adams, Russell E.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, G01C 308, G03B 300

Patent

active

046539050

ABSTRACT:
One or more optical fibers are provided with different numerical apertures for differently transmitting light from an object. Light is thus transmitted for a given range at a predetermined ratio corresponding to a difference between the different numerical apertures. That ratio is varied by variations in the range. The varying ratio is detected and a range finder operation is performed in response to that detected varying ratio.

REFERENCES:
patent: 3327584 (1967-06-01), Kissinger
patent: 4249076 (1981-02-01), Bergstrom et al.
patent: 4358960 (1982-11-01), Porter
patent: 4379225 (1983-04-01), Apothaker

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