Hi,

A friend recently asked me how to get highly aspheric “freeform” surfaces made, and specifically how to create jobfiles for various CNC machines given an OpticStudio prescription. I advised him to look at Diffsys, as I once knew the developer of the program (long since lost contact) and as it’s owned by Precitech I thought it was a no-brainer choice.

He basically laughed at me (we’re good friends) so I downloaded the demo from the Precitech website and I see what he means. It’s very much a 1990s product still available for purchase.

Does anyone here use it, and if so with what success? Is there a better program that I should be recommending?

• Mark