ELECTRO-OPTIC TIME-OF-FLIGHT DISTANCE METER HAVING A RECEIVER CHAIN
An electro-optic distance meter according to the time-of-flight principle with a receiver chain for generating a digital signal from a received light pulse, the receiver chain comprising a photodetector, a first gain stage, in particular a transimpedance amplifier or a current-mode electronic, for c...
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Main Authors | , |
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Format | Patent |
Language | English French German |
Published |
02.08.2023
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Subjects | |
Online Access | Get full text |
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Summary: | An electro-optic distance meter according to the time-of-flight principle with a receiver chain for generating a digital signal from a received light pulse, the receiver chain comprising a photodetector, a first gain stage, in particular a transimpedance amplifier or a current-mode electronic, for converting an input current from the photodetector associated to the returned light pulse into an output voltage, a filter and an analog-to-digital converter, whereby the digital signal provides an unambiguous relationship between intensity-time delay of the optical pulse and signalshape-time delay of the electrical signal, wherefore the photodetector, the first gain stage and the analog-to-digital converter are adapted to each other such that the analog-to-digital converter -and any other receiver chain element following the filter if present- remains unclipped in a linear operating range even when the first gain stage shows a non-linear time-invariant response or a well-defined time-invariant saturation response to the input current of the photodetector. |
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Bibliography: | Application Number: EP20220154389 |