Suitability of igneous rock for precision tooling

Martin J. Valente; James H. Burge; R. DiCenso; Abdel A. Abusafieh; Dan R. Federico

doi:10.1117/12.453617

27 December 2001 Suitability of igneous rock for precision tooling

Martin J. Valente, James H. Burge, R. DiCenso, Abdel A. Abusafieh, Dan R. Federico

Proceedings Volume 4451, Optical Manufacturing and Testing IV; (2001) https://doi.org/10.1117/12.453617
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States

Abstract

Surface plates and blocking tools are commonly made of granite because of its good stability. But how stable is the granite, and which type of material is optimal? We have explored several materials and manufacturing processes for a 4-m aspheric reference surface that would serve as a tool for laying up composite optics. In this paper, we discuss the materials selection, stability to thermal and moisture effects, and parameters for processing the surface to give sub-micron accuracy and stability.

Citation Download Citation

Martin J. Valente, James H. Burge, R. DiCenso, Abdel A. Abusafieh, and Dan R. Federico "Suitability of igneous rock for precision tooling", Proc. SPIE 4451, Optical Manufacturing and Testing IV, (27 December 2001); https://doi.org/10.1117/12.453617

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