Abstract

Off axis parabolas (OAPs) allow for more confined and intricate optical system designs, but meeting tight irregularity and slope specifications can be difficult due to distortion in null test setups. This difficulty is exacerbated with steeper off axis angles (OAA). This paper will show the methodology used to convert a shallow (<45deg OAA) OAP metrology process to a 90-degree OAP process that was used to fabricate parts with difficult irregularity and slope specifications.

© 2023 The Author(s)