Long-range, high-precision measurement

The problem

Long range and high precision usually trade against each other. Laser triangulation degrades quickly with distance; interferometers are extremely precise but short-range and sensitive to vibration and air currents; contact probes cannot reach and do wear.

So the cases that need sub-millimeter resolution at tens of meters — bridges, dams, large structures, machine-tool travel — often have no good instrument.

How we approach it

LUC-POINT™ uses FMCW coherent ranging: it compares the frequency difference between return and local oscillator rather than return intensity, so precision follows chirp linearity and bandwidth rather than degrading with distance, and the full optical power is concentrated on one point instead of spread across a field. 0.1 mm at 100 m.

Where it applies

Structural health monitoring of bridges and buildings, deformation measurement of large workpieces, non-contact verification of machine-tool travel.