Use of 3D printing in astronomical mirror fabrication

Mélanie Roulet; Carolyn Atkins; Emmanuel Hugot; Robert Snell; Bart van de Vorst; Katherine Morris; Michel Marcos; Iain Todd; Christopher Miller; Joris Dufils; Szigfrid Farkas; Gyorgy Mezo; Fabio Tenegi; Afrodisio Vega-Moreno; Hermine Schnelter

doi:10.1117/12.2556921

20 April 2020 Use of 3D printing in astronomical mirror fabrication

Mélanie Roulet, Carolyn Atkins, Emmanuel Hugot, Robert Snell, Bart van de Vorst, Katherine Morris, Michel Marcos, Iain Todd, Christopher Miller, Joris Dufils, Szigfrid Farkas, Gyorgy Mezo, Fabio Tenegi, Afrodisio Vega-Moreno, Hermine Schnelter

Author Affiliations +

Proceedings Volume 11349, 3D Printed Optics and Additive Photonic Manufacturing II; 113490D (2020) https://doi.org/10.1117/12.2556921
Event: SPIE Photonics Europe, 2020, Online Only

Abstract

In this paper we are exploring the possibilities of 3D printing in the fabrication of mirrors for astronomy. Taking the advantages of 3D printing to solve the existing problems caused by traditional manufacturing, two proof-of- concept mirror fabrication strategies are investigated in this paper. The first concept is a deformable mirror with embedded actuator supports system to minimise errors caused by the bonding interfaces during mirror assembly. The second concept is the adaption of the Stress Mirror Polishing (SMP) technique to a variety of mirror shapes by implemented a printed thickness distribution on the back side of the mirror. Design investigations and prototypes plans are presented for both studies.

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Mélanie Roulet, Carolyn Atkins, Emmanuel Hugot, Robert Snell, Bart van de Vorst, Katherine Morris, Michel Marcos, Iain Todd, Christopher Miller, Joris Dufils, Szigfrid Farkas, Gyorgy Mezo, Fabio Tenegi, Afrodisio Vega-Moreno, and Hermine Schnelter "Use of 3D printing in astronomical mirror fabrication", Proc. SPIE 11349, 3D Printed Optics and Additive Photonic Manufacturing II, 113490D (20 April 2020); https://doi.org/10.1117/12.2556921

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