1. An opto-electronic distance measuring device, particularly a laser distance measuring device, having: a transmitting unit having a driver stage for a light source, particularly a semiconductor light source, for emitting optical pulses as pulsed-mode-intensity-modulated optical radiation, a receiving unit for receiving a portion of the optical radiation, said portion being reflected from a target object, and converting it into an electrical reception signal, by means of a photosensitive electrical component, particularly a photodiode, an analogue-digital converter for digitizing the reception signal, and an electronic evaluation unit which is designed in such a way that a distance from the target object can be ascertained on the basis of a signal propagation time using the digitized reception signal, wherein the driver stage is designed in such a way that at least two pulse durations of different length for the optical pulses can be set, particularly wherein extension of the pulse duration allows expansion of a distance measurement range, as a maximum ascertainable distance, to be achieved.