the XONOX 6" to 8" Beam Expander has been designed to be fully compatible with commercially available 6" Fizeau interferometers
the Beam Expander and matching 8" Transmission Flat in Lambda/20 PV quality are ideally suited for evaluating transmitted wavefront error or surface figure error of large aperture optics.
additional diffractive holograms or null lenses might be used to test large aperture optics of various shapes
optional dedicated fixture to facilitate the usage of the Beam Expander and Transmission Flat in horizontal setups. The Fuxture has been designed to support the weight of the assembly without restricting motion along the optical axis
fine asjustment system for perfect settings to the systems optical axis