An optical setup for the testing of rotationally symmetric aspheres without a null optic is proposed. The optical setup is able to transfer the strongly curved wave fronts that stem from the reflection of a spherical testing wave front at a rotationally symmetric asphere. By simulation it is proved that the algorithms of the Shack–Hartmann sensor that is used can cope with the steep wave-front slopes (~110λ/mm) in the detection plane. The systematic errors of the testing configuration are analyzed and separated. For all types of error, functionals are derived whose significance is proved by simulation. The maximum residual errors in the simulations are fewer than λ/500 (peak to valley).
© 2001 Optical Society of America
[Optical Society of America ]
Johannes Pfund, Norbert Lindlein, and Johannes Schwider, "NonNull Testing of Rotationally Symmetric Aspheres: A Systematic Error Assessment," Appl. Opt. 40, 439-446 (2001)