Rate of change of curvature as metric for optical fabrication difficulty in precision aspheres

Jay P. Daniel; Michael Orr

doi:10.1117/12.2598031

11 August 2021 Rate of change of curvature as metric for optical fabrication difficulty in precision aspheres

Jay P. Daniel, Michael Orr

Proceedings Volume 11816, Optomechanics and Optical Alignment; 118160A (2021) https://doi.org/10.1117/12.2598031
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

Freeform optics have had a significant impact in airborne systems and other applications and are a key enabler for spaceborne systems. Their complex shapes allow the production of optical systems with reduced physical size and weight, together with improved performance. The sophisticated fabrication technologies that have enabled freeform optics also give rise to manufacturing challenges not encountered in the production of traditional, rotationally symmetric spherical and aspheric optics. Since manufacturing complexity has both a cost and lead time impact, it’s useful to have some means to predict how readily a specific design can be fabricated. This paper shows how an analysis of low- and mid-spatial frequency errors on various types of aspheric components leads to the use of rate of change of surface curvature as an easily derived and useful predictive metric to manufacturing complexity.

Conference Presentation

Citation Download Citation

Jay P. Daniel and Michael Orr "Rate of change of curvature as metric for optical fabrication difficulty in precision aspheres", Proc. SPIE 11816, Optomechanics and Optical Alignment, 118160A (11 August 2021); https://doi.org/10.1117/12.2598031

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