The results of metrological researches of the contactless measurements’ method using for range, nanodisplacemenst and vibrations and based on the phenomena of an optical feedback and frequency modulation in semi-conductor lasers are presented. It is shown that the frequency of received signal is linear with the range, the sensitivity is 8 kHz/mm, and the error at indication the results of 10 times per second is about 0,3% in the range of measurements of the order 0,5 meter. The method allows to evaluate nanodisplacements in the range of distances nearby 10 to 40 cm with resolution of 5 nm. Unlike Doppler vibrometer, reacting to the vibrovelocity, the investigated technique allows to estimate the magnitude of vibrodisplacement.