Patent ID: 8279421

Claim:
An optoelectronic distance measuring method according to the phase measurement principle, comprising the steps: emitting optical measuring radiation in the direction of a measured object, the optical measuring radiation modulated according to the burst modulation principle with a burst period comprising an active burst time and a dead time; receiving at least a part of measuring radiation reflected by the measured object and converting the received measuring radiation into an input measuring signal; and determining a distance to the measured object by evaluation of a measuring signal generated from the input measuring signal, wherein: on reception and conversion, continuous superposition, with a mixer signal is effected in such a way that the input measuring signal substantially has burst pulses of constant width which is determined by the active burst time and modulated amplitude, a curve enveloping the burst pulses, as an low frequency envelope curve, varies approximately sinusoidally with a low envelope curve frequency; the measuring signal assumes values dependent on the input measuring signal in each case during a sampling time linked to the active burst time; and the measuring signal is kept substantially at a value which the measuring signal has in each case at the end of the sampling time, in each case during a hold time linked to the dead time.