Cost effective fabrication method for large sapphire sensor windows

Mark Walters; Alan Gould; Kevin Bartlett; Matthew R. Brophy; Jessica DeGroote Nelson

doi:10.1117/12.2029536

15 October 2013 Cost effective fabrication method for large sapphire sensor windows

Mark Walters, Alan Gould, Kevin Bartlett, Matthew R. Brophy, Jessica DeGroote Nelson

Proceedings Volume 8884, Optifab 2013; 888404 (2013) https://doi.org/10.1117/12.2029536
Event: SPIE Optifab, 2013, Rochester, New York, United States

Abstract

Sapphire poses very difficult challenges to optical manufacturers due to its high hardness and anisotropic properties. These challenges can result in long lead times and high prices. Large optical sensor windows demand much higher precision surfaces compared to transparent armor (windshields) to achieve acceptable image quality. Optimax is developing a high speed, cost effective process to produce such windows. The Optimax high speed process is a two-step process that combines precision fixed abrasive grinding and high speed polishing. In-house studies have demonstrated cycle time reduction of up to 6X as compared to conventional processing.

Citation Download Citation

Mark Walters, Alan Gould, Kevin Bartlett, Matthew R. Brophy, and Jessica DeGroote Nelson "Cost effective fabrication method for large sapphire sensor windows", Proc. SPIE 8884, Optifab 2013, 888404 (15 October 2013); https://doi.org/10.1117/12.2029536

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