Measuring system for contactless measuring the distance between

Details Measuring system for contactless measuring the distance between Measuring system for contactless measuring the distance between

1985-05-21

1987-06-16

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250201, 356 1, 356 4, 356376, G01B 1130

Patent

active

046738177

ABSTRACT:
A system for measuring without contact the distance between a predetermined point of an object surface and a reference level using trigonometric principles includes a transmitting section with a source of radiation for emitting a plurality essentially parallel radiation beams of small separation to the point of the object surface to be investigated and a receiving section with a detector responsive to the reflected radiation. The detector converts the reflected radiation into a corresponding electrical signal and includes a radiation sensitive area which is restricted to a substantially linear area. The output of the detector is coupled to signal processing means in which a discriminating operation is carried out between detector signals which have, or have not, a predetermined separation or separations corresponding to the separation or separations between said radiation beams.

REFERENCES:
patent: 4227813 (1980-10-01), Pirlet
patent: 4502785 (1985-03-01), Truax
patent: 4582424 (1986-04-01), Kawabata

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