Distance-measuring system with in-range signalling for use with

Details Distance-measuring system with in-range signalling for use with Distance-measuring system with in-range signalling for use with

1980-09-19

1982-08-24

Adams, Russell E.

354 60L, G03B 708

Patent

active

043458270

ABSTRACT:
A distance measuring system generates an in-range signal when an object is located within a range of focus or a zone of protection, as the case may be. The system utilizes a single infrared transmitter and two receivers in order to determine the position of the object by triangulation.

REFERENCES:
patent: 4129366 (1978-12-01), Watanabe
patent: 4221474 (1980-09-01), Lermann et al.
patent: 4230400 (1980-10-01), Wick et al.
patent: 4251145 (1981-02-01), Cocron et al.
patent: 4268137 (1981-05-01), Cocron et al.

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