ELID Grinding of Large Aspheric Optics

Award Information
Agency: National Aeronautics and Space Administration
Branch: N/A
Contract: NNX11CE96P
Agency Tracking Number: 105506
Amount: $99,996.00
Phase: Phase I
Program: SBIR
Awards Year: 2011
Solicitation Year: 2010
Solicitation Topic Code: S2.05
Solicitation Number: N/A
Small Business Information
23 Soobitsky Road, Higganum, CT, 06441-4476
DUNS: 173579124
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Kai Xin
 Principal Investigator
 (518) 618-3056
Business Contact
 Flemming Tinker
Title: Business Official
Phone: (860) 316-2589
Email: ftinker@ftoptics.com
Research Institution
Large aperture aspheric optics are among the most susceptible optical surfaces to the accumulation of periodic surface artifacts during fabrication. Periodic features are created during the manufacturing process and lead to significant degradation in imaging performance. Most research on the topic addresses polishing, and in particular smoothing of periodic features. Our proposal addresses preventing such surface artifacts during the generating and grinding processes. Prevention upstream in the process can lead to significant cost reductions and simplification of downstream polishing processes.The Phase-1 effort will study of how the introduction of an ELID in-situ tool dressing technique can prevent or minimize the creation of mid and high spatial frequency surface features in the process of fabricating glass and Silicon Carbide aspheric optics and replication mandrels. We propose to construct and test an experimental platform that allows us to characterize the benefits and tune the process. We expect the result of this work to prepare the way to apply this technology to meter-class optical mirrors and replication mandrels as part of a Phase-II effort and will contribute to a strategy of cost reductions necessary for insertion of segmented aspheric and glancing incidence optics in future telescope missions.

* Information listed above is at the time of submission. *

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