Sapphire fabrication for precision optics

Maynard B. Smith; Frederick Schmid; Chandra P. Khattak; Keil A. Schmid; Donald Golini; John C. Lambropoulos; Mark A. Atwood; Y. Y. Zhou; Paul D. Funkenbusch

doi:10.1117/12.258291

11 November 1996 Sapphire fabrication for precision optics

Maynard B. Smith, Frederick Schmid, Chandra P. Khattak, Keil A. Schmid, Donald Golini, John C. Lambropoulos, Mark A. Atwood, Y. Y. Zhou, Paul D. Funkenbusch

Author Affiliations +

Proceedings Volume 2857, Advanced Materials for Optical and Precision Structures; (1996) https://doi.org/10.1117/12.258291
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

Large sapphire components are required to meet the challenging needs of commercial and military optical applications. However, the desirable properties of sapphire also make it difficult to grind and polish. Fabrication costs can represent 50 percent of the price of large sapphire components. Cutting and grinding studies on sapphire were carried out with four types of diamond tools to correlate tool characteristics and process parameters with the grinding mechanism. The Twyman effect was also investigated to relate to crystallographic properties of sapphire with fabrication concerns. If grinding and microgrinding techniques can be optimized, costs associated with fabrication of sapphire and other optical materials will ultimately be reduced.

Citation Download Citation

Maynard B. Smith, Frederick Schmid, Chandra P. Khattak, Keil A. Schmid, Donald Golini, John C. Lambropoulos, Mark A. Atwood, Y. Y. Zhou, and Paul D. Funkenbusch "Sapphire fabrication for precision optics", Proc. SPIE 2857, Advanced Materials for Optical and Precision Structures, (11 November 1996); https://doi.org/10.1117/12.258291

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