The positioning devices DS30 and DS40 are designed to encapsulate completely the piezo drive. Depending on the controller the step with can be as short as 20nm. The specification is summerized in the datatsheets DS30.PDF and DS40.PDF
The piezo-driven mirror tilt has the following key features: > compact design > hig angle resolution > holds position without power > backslash free > also available with larger dimensions and as transition tilt