Äpre Instruments Fizeau interferometer provides 4 Mpixel imaging

The S100 HR laser Fizeau interferometer allows optical testing by manufacturers of spheres, aspheres, and freeform surfaces. It provides diffraction-limited, 4 Mpixel imaging with better than λ/20 accuracy, even at 8 fringes/mm slopes. The company’s Reveal software can provide custom reports in as few as 6 s, and runs on any 64-bit Windows system.
Äpre Instruments
Tucson, AZ
http://apre-inst.com