Critical parameters for grinding large sapphire window panels

Bashe, Joseph R.; Dempsey, Gene; Akwani, Ikerionwu A.; Jacoby, Keith T.; Hibbard, Douglas L.

doi:doi:10.1117/12.720129

My Subscription | My Email Alerts | My Article Collections

BROWSE PROCEEDINGS

Proceedings

BROWSE JOURNALS

Journals

BROWSE SPIE eBOOKS

SPIE eBooks

SUBSCRIPTIONS & PRICING

GENERAL INFORMATION

You are not logged in Logged Out Log In

Proceedings / Volume 6545 / Visible to Mid-wavelength Infrared Transparent Materials and Applications

Previous Article | Next Article

Critical parameters for grinding large sapphire window panels

Proc. SPIE 6545, 654517 (2007); http://dx.doi.org/10.1117/12.720129

Wednesday 11 April 2007

Orlando, FL, USA

Window and Dome Technologies and Materials X

Randal W. Tustison

Alerts
- Alert Me When Cited
- Alert Me When Corrected
Tools
Share
- Email Abstract
- Connotea
- CiteULike
- del.icio.us
- BibSonomy
- Tweet this Article
- Add to Facebook

Abstract

Joseph R. Bashe, Gene Dempsey, Ikerionwu A. Akwani, Keith T. Jacoby, and Douglas L. Hibbard

Exotic Electro-Optics

Advances in optical manufacturing and testing technologies for sapphire material are required to support the increasing use of large-aperture sapphire panels as windscreens for various electro-optical system applications. Single surface grinding is a crucial process step in both the figuring and finishing of optical components. Improper grinding can make subsequent polishing operations more difficult and time consuming. Poor grinding can also lead to the introduction of surface stress and sub-surface damage which can affect critical opto-mechanical performance characteristics such as strength and durability. Initial efforts have been completed at Exotic Electro-Optics under the funding of the Office of Naval Research and the Air Force Research Laboratory to investigate a number of process enhancements in the grinding of a-plane sapphire panels. The information gained from this study will ultimately provide a better understanding of the overall manufacturing process leading to optimized process time and cost. EEO has completed two sets of twelve-run Plackett-Burman designs of experiment (DOE) to study the effects of fundamental grinding parameters on sapphire panel surfaces. The relative importance of specific process parameters on window characteristics including surface roughness, stress, sub-surface damage are reported.

History

Online May 02, 2007

Digital Object Identifier

http://dx.doi.org/10.1117/12.720129

Citation

Joseph R. Bashe, Gene Dempsey, Ikerionwu A. Akwani, Keith T. Jacoby and Douglas L. Hibbard, "Critical parameters for grinding large sapphire window panels", Proc. SPIE 6545, 654517 (2007); http://dx.doi.org/10.1117/12.720129