Optoelectronic distance sensor with visible pilot beam

Details Optoelectronic distance sensor with visible pilot beam Optoelectronic distance sensor with visible pilot beam

1988-02-01

1989-04-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 1, G01N 2186

Patent

active

048250910

ABSTRACT:
The invention is directed to a distance sensor operating in accordance with the triangulation principle. The distance sensor has at least one pilot beam source which makes the imaging beam path of the sensor visible. The imaging beam path is inclined with respect to the measuring beam. A second pilot beam source is provided for the situation wherein the actual measuring beam of the sensor is not in the visible spectral region. A visible pilot beam is then superposed on the measuring beam.

REFERENCES:
patent: 3610127 (1970-02-01), Ruhle
patent: 4325639 (1982-04-01), Richter
patent: 4479717 (1984-10-01), Cornillault
patent: 4595829 (1986-06-01), Neumann et al.
patent: 4630927 (1986-12-01), Fulkerson
patent: 4647209 (1987-03-01), Neukomm et al.

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