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11 November 1996 Sapphire fabrication for precision optics
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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.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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);


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