The PTI 250™ optical accessories are designed for high performance at economical prices. A 25-mm transmission flat, 25-mm to 6-mm aperture converter, and integrated transmission flat are used for transmitted wavefront applications. A variety of available transmission spheres cover a wide range of surface diameters and radii. Also available is a radius measurement kit with 30 mm of travel and 0.1 µm resolution. All accessories mount with a simple positive-lock bayonet.

The ZYGO PTI 250™ mounting accessories provide an excellent foundation for your test setups. Tip/tilt stages, XY translation stages, a self-centering element holder, and a lens nest kit provide all the functions to get you started. Custom Fixturing for unique test setups can be mounted to access points in the PTI 250™ base.