Method and device for optical range or speed measurement

The invention relates to a method for measuring a distance-related variable such as distance, speed or acceleration, or for leveling. An emitting device (1-6) comprising at least one microlaser (3) is used as an emitter, and the beam reflected off an object surface is received and evaluated for measurement. A beam is emitted and evaluated after being received, in a substantially simultaneous manner in at least two different wavelengths. Preferably, said method is carried out by means of a device whereby the microlaser (3) in the form of a passively pulsating microlaser (3) emits at least two different wavelengths. A receiver (15, 40) for the laser beam reflected off an object is arranged downstream from the evaluating device (41).