Magnetorheological finishing of IR materials

Stephen D. Jacobs; Fuqian Yang; Edward M Fess; J. B. Feingold; Birgit E. Gillman; William I. Kordonski; Harold Edwards; Donald Golini

doi:10.1117/12.295132

1 November 1997 Magnetorheological finishing of IR materials

Stephen D. Jacobs, Fuqian Yang, Edward M Fess, J. B. Feingold, Birgit E. Gillman, William I. Kordonski, Harold Edwards, Donald Golini

Author Affiliations +

Proceedings Volume 3134, Optical Manufacturing and Testing II; (1997) https://doi.org/10.1117/12.295132
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Magnetorheological finishing (MRF) is a subaperture lap, deterministic process developed at the Center for Optics Manufacturing. MRF can remove subsurface damage from an optical component while correcting figure errors and smoothing small scale microroughness. The 'standard' magnetorheological fluid for finishing of optical glasses consists of magnetic carbonyl iron and nonmagnetic cerium oxide particles in water. This composition works well for a variety of soft and hard glass types, but it does not perform adequately for certain single crystal materials and polycrystalline compounds used in IR applications. In this paper, we describe modifications to MRF and finishing experiments for LiF, ZnSe, CaF₂, AMTIR-1, ZnS, MgF₂, sapphire, and CVD diamond.

Citation Download Citation

Stephen D. Jacobs, Fuqian Yang, Edward M Fess, J. B. Feingold, Birgit E. Gillman, William I. Kordonski, Harold Edwards, and Donald Golini "Magnetorheological finishing of IR materials", Proc. SPIE 3134, Optical Manufacturing and Testing II, (1 November 1997); https://doi.org/10.1117/12.295132

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