Note those 532nm green DPSS lasers are repeatable within +-1nm across their normal operating temperature. Adding a 20nm wide OD6 narrow band-pass filter to a $5 5mW DPSS laser module is the cheapest precision money can buy these days.
Really depends what one can get away with in the mechanism being built. Note, many machines will fall under export restriction, and as a company people have to decide whether that encumbrance is worth the hassle.
Really cool man, will need to spend some time to fully wrap my head around this. Wonder if this is going to provide maybe too much granularity, as I am measuring slopes variation of say 2cm/100cm like a golf green. Trying out just using basic ToF sensor as of now.
https://www.youtube.com/watch?v=j-u3IEgcTiQ
https://www.youtube.com/watch?v=ucuVsReDze0
https://en.wikipedia.org/wiki/Michelson_interferometer
Note those 532nm green DPSS lasers are repeatable within +-1nm across their normal operating temperature. Adding a 20nm wide OD6 narrow band-pass filter to a $5 5mW DPSS laser module is the cheapest precision money can buy these days.
Really depends what one can get away with in the mechanism being built. Note, many machines will fall under export restriction, and as a company people have to decide whether that encumbrance is worth the hassle.
Best of luck =3