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Conferences > IODC > 2023 > PS > 1279834

Off-axis parabolic and ellipsoidal mirrors defined as freeform optics

Olivier Lardière, Denis Brousseau, Simon Thibault, and Christian Marois

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Abstract

Most optical shops are now equipped with 5-axes grinding and polishing machines for manufacturing freeform optics. It can be advantageous to define off-axis parabolic (OAP) and ellipsoidal (OAE) mirrors as freeforms to ease their design, specification and fabrication as stand-alone wedge-less mirrors. This paper describes an algorithm generating the surface sag and sphere departure point clouds from the conjugation distances and fold angle of the mirror.

© 2023 SPIE

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