Laser Displacement Sensors
- Keyence LK-2001 and LK-031
- Keyence LB-72 and LB-12
These measure distance down to the 1µm over a 1cm range.
-5v to +5v in range, +12v out of range and 100Ω impedance. I am still working on the ADC to use these in several projects.
Ideally it should be possible to scan over objects, probably rotating on a turntable, to create extremely high-resolution scans of microscopic objects.