Fabrication and metrology of high-precision freeform surfaces

Chris Supranowitz; Paul Dumas; Tobias Nitzsche; Jessica DeGroote Nelson; Brandon B. Light; Kate Medicus; Nathan Smith

doi:10.1117/12.2030144

15 October 2013 Fabrication and metrology of high-precision freeform surfaces

Chris Supranowitz, Paul Dumas, Tobias Nitzsche, Jessica DeGroote Nelson, Brandon B. Light, Kate Medicus, Nathan Smith

Proceedings Volume 8884, Optifab 2013; 888411 (2013) https://doi.org/10.1117/12.2030144
Event: SPIE Optifab, 2013, Rochester, New York, United States

Abstract

Freeform applications are growing and include helmet-mounted displays, conformal optics (e.g. windows integrated into airplane wings), and those requiring the extreme precision of EUV. These non-rotationally symmetric surfaces pose challenges to optical fabrication, mostly in the areas of polishing and metrology. The varying curvature of freeform surfaces drives the need for smaller, more “conformal”, tools for polishing and reference beams for interferometry. In this paper, we present fabrication results of a high-precision freeform surface. We will discuss the total manufacturing process, including generation, pre-polishing, MRF^®, and metrology, highlighting the capabilities available in today’s optical fabrication companies.

Citation Download Citation

Chris Supranowitz, Paul Dumas, Tobias Nitzsche, Jessica DeGroote Nelson, Brandon B. Light, Kate Medicus, and Nathan Smith "Fabrication and metrology of high-precision freeform surfaces", Proc. SPIE 8884, Optifab 2013, 888411 (15 October 2013); https://doi.org/10.1117/12.2030144

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