Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2010-03-25
2011-12-27
Nguyen, Sang (Department: 2886)
Optics: measuring and testing
Range or remote distance finding
With photodetection
C356S622000, C356S141500, C356S139010
Reexamination Certificate
active
08085389
ABSTRACT:
The present invention relates to an optical sensor based on the transit time principle, comprising a light source for the emission of emergent light pulses into an observed region, comprising a rotating device for rotating a beam direction of the emergent light pulses about a rotation axis orientated transverse to the beam direction, and comprising a detector for the detection of light pulses reflected by objects in the observed region, comprising a housing for keeping the sensor interior separate from the environment and including a partitioning screen that is transparent to the emergent light pulses and to the reflected light pulses, comprising a test device for testing the translucence of the partitioning screen, and comprising a control and evaluation unit for controlling the light source, for evaluating the light pulses detected by the detector, and for determining the distance away of an object on the basis of the measured transit time of the light pulses, which control and evaluation unit cooperates with the test device.
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Grubl, Alexander, “European Search Report”, European Application No. EP 09 00 4764, Sep. 18, 2009, 2 pages.
Satzky Uwe
Tabel Ernst
Hoffman Warnick LLC
Merecki John A.
Nguyen Sang
Pepperl & Fuchs GmbH
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