Monitoring method and optoelectronic sensor

Details Monitoring method and optoelectronic sensor Monitoring method and optoelectronic sensor

2005-09-06

2005-09-06

Allen, Stephone B. (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C340S555000, C340S556000

Reexamination Certificate

active

06940060

ABSTRACT:
A zone is monitored with an optoelectronic sensor. Light is transmitted in accordance with a structured light pattern in the direction of the monitored zone and is received from the monitored zone. The received light is converted into received signals and the received signals are evaluated with respect to the presence of an object, or with respect to a movement of an object, in the monitored zone. The light is transmitted and/or received in accordance with at least two different light patterns.

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