Re: Ref: Laser Metrology

--- In CAD_CAM_EDM_DRO@yahoogroups.com, dickw@... wrote:

>
> Ultrasound wavelengths are probably too long.
>
> I was thinking more in terms of some hack using a DVD laser and some of
> the junk optics associated with it. A good setup could drive servos
> without encoders and provide amazing repeatability.
>
> D.

vibration would be a killer for interferometry for most CNC apps, it
is possible to do time of flight with high accuracy (such as FARO
laser trackers use) but far from trivial and not junk box stuff.

Graham