This paper presents an optical interferometer for non-incremental distance measurements based on a frequency-modulated laser diode. The presence of a suitable optical feedback enables to get measurements also beyond the coherence length of the laser. The system resolution is of 50 μm over a range of 0.4 m at a working distance from 0.4 up to 1.5 m.
Non-incremental interferometric distance meter
MINONI, Umberto;DOCCHIO, Franco
1996-01-01
Abstract
This paper presents an optical interferometer for non-incremental distance measurements based on a frequency-modulated laser diode. The presence of a suitable optical feedback enables to get measurements also beyond the coherence length of the laser. The system resolution is of 50 μm over a range of 0.4 m at a working distance from 0.4 up to 1.5 m.File in questo prodotto:
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