Rangefinder using the propagation-time principle

摘要

The invention relates to a rangefinder (1) using the propagation-time principle with electromagnetic waves, preferably lightwaves, having at least one light transmitter (2) which emits a lightwave, having a transmission pulse generator (3) which modulates the amplitude of the lightwave by means of an amplitude modulation signal, having at least one light receiver (4, 5) which is arranged at the end of a light path and supplies a received signal, and having at least one phase difference detector (6), the light transmitter (2), the transmission pulse generator (3), the light receiver (4, 5) and the phase difference detector (6) being connected in a manner known per se via electrical signal paths. According to the invention, such a rangefinder is characterized in that at least one electronic signal delay unit (14, 15, 20) is provided in at least one of the electrical signal paths. <IMAGE>