Optics: measuring and testing – Range or remote distance finding – With photodetection
Reexamination Certificate
2008-05-06
2010-12-28
Tarcza, Thomas H (Department: 3662)
Optics: measuring and testing
Range or remote distance finding
With photodetection
Reexamination Certificate
active
07859651
ABSTRACT:
The invention relates to an optical range finder comprising a light transmitter for the transmission of measurement light into a monitored space, a light receiver for the reception of measurement light reflected or remitted by an object in the monitored space, and an evaluation circuit to determine the time of flight of the measurement light from the output signal and to determine the distance of the object therefrom. In accordance with the invention, a PIN diode circuit is provided between the light receiver and the evaluation circuit and is electrically connected to them, with the PIN diode circuit damping the current output signal of the light receiver. The invention furthermore relates to an optical range finding method which can be carried out with the optical range finder in accordance with the invention.
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Günther Andreas
Themel Helmut
Meyer Jerald L.
Protigal Stanley N.
Ratcliffe Luke D
SICK AG
Tarcza Thomas H
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