[JJ_SO]

To do what by moving independently? They have to remain depending to the other glass elements (some time ago those were called "floating elements"), because only that way they can act correcting. It might be easier to do mechanically by curves or levers. I wonder about the power consumption compared to USM drives and also the sensitivity and long time reliability.

 

The latest models of our high precision grinding machines also have linear motors which bring a lot more weight at the precision of a fraction of µm to the right place, repeatedly