Absolute distance meter based on a frequency-modulated laser diode

U. Minoni, L. Rovati, F. Docchio
1998 Review of Scientific Instruments  
This article describes a distance measuring instrument based on a frequency-modulation continuous wave interferometer implemented in a compact setup suitable for industrial applications. The prototype uses a visible laser diode that is frequency-modulated with a triangular wave form. Measurements carried out with a cooperative target show a measuring range from 130 to 300 mm with a relative accuracy of 1.2ϫ10 Ϫ3 .
doi:10.1063/1.1149210 fatcat:hxeocmq7nngangftwrkqbamufm