Optoelectronic sensor

Details Optoelectronic sensor Optoelectronic sensor

1998-05-18

2000-12-05

Ham, Seungsook

Radiant energy

Photocells; circuits and apparatus

With circuit for evaluating a web, strand, strip, or sheet

250221, G01N 2100

Patent

active

061570400

ABSTRACT:
The invention relates to an optoelectronic sensor having a light transmitter for the transmission of a transmitted light beam into a monitored region, having a light receiver for the reception of a received light beam, which is formed by the transmitted light reflected in the direction of the light receiver from an article in the monitored region, wherein the received light beam stands at a variable beam angle to the transmitted light beam in dependence on the spacing of the article from the sensor, and having a control and evaluation unit for the processing of the output signal of the light receiver. The invention includes a light receiver that has a multi-element light sensor which has at least four individual sensor elements, which are arranged adjacently in such a way that different sensor elements are illuminated by the received light beam in dependence on the beam angle.

REFERENCES:
patent: 4274735 (1981-06-01), Tamura et al.
patent: 4490037 (1984-12-01), Anagnostopoulos
patent: 4575237 (1986-03-01), Suzuki
patent: 4693598 (1987-09-01), Sehr
patent: 5532479 (1996-07-01), Jung

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