FIBRE-OPTIC MULTIWAVELENGTH INTERFEROMETER (MWLI) FOR THE ABSOLUTE MEASUREMENT OF DISTANCES AND TOPOLOGIES FOR SURFACES AT A LARGE OPERATING DISTANCE

摘要

The invention relates to a sensor device for measuring distances with at least two radiation sources (101) which are designed to produce optical signals (112) at different wavelengths and the optical signals of which can be supplied to a sensor head (104; 124) via a fibre-optic coupling (102, 103), wherein the optical signals (112) for the at least two radiation sources (101) can be brought together in a common fibre (110) by means of at least one optical multiplexer device (102) and can be supplied to the sensor head (104; 124) by means of said fibre (110).