Optical sensor and method for suppressing faults by diffused...

Details Optical sensor and method for suppressing faults by diffused... Optical sensor and method for suppressing faults by diffused...

2006-03-31

2009-08-25

Luu, Thanh X (Department: 2878)

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

C250S559360

Reexamination Certificate

active

07579580

ABSTRACT:
An optical sensor (1) with a light beam (7) created by a pulsed primary light source (5), which light beam is reflected at a surface (13) of an object and is recognized by a detector. In order to mask interfering effects, which might develop due to diffused light of the light beam (7), a compensation light source (25) emits a light cone during station breaks in operation of the primary light source (5), which includes the diffused light range of the light beam (7) of the primary light source (5). In this way, objects within the diffused light area create a compensation light portion, which prevents the activation of the sensor output merely by the diffused light of the light beam (7).

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patent: 101 59 932 (2003-06-01), None

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