Device for detecting the edge location of an object

Details Device for detecting the edge location of an object Device for detecting the edge location of an object

1989-07-26

1991-04-09

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

25022711, G01N 2186

Patent

active

050067192

ABSTRACT:
Device for detecting a position of an edge includes a row of light-emitting elements forming an angle with the edge, an optoelectric transducer disposed adjacent the light emitter elements for receiving light emitted by the light emitting elements, first means for guiding the edge between the row of light-emitting elements and the optoelectric transducer, second means for pulsatingly energizing the light-emitting elements sequentially, and third means for scanning an output voltage of the optoelectric transducer in synchronism with the pulsating energization of the light-emitting elements.

REFERENCES:
patent: 3513321 (1970-05-01), Sherman
patent: 3619626 (1971-11-01), Rudolph
patent: 3761723 (1973-09-01), DeCock
patent: 3890509 (1975-06-01), Maxey
patent: 4192613 (1980-03-01), Hammar
patent: 4555633 (1985-11-01), Bjorkelund
patent: 4559451 (1985-12-01), Curl
patent: 4559452 (1985-12-01), Igaki et al.
patent: 4636639 (1987-01-01), Guillaume et al.
Patent Abstracts of Japan, vol. 6, No. 245 (P-159) (1123), 12/3/82; JP-A 57 142503 (Tokyo Shibaura Denki K. K.) 9/3/82.

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