Freeform Optical Systems for Defense System Optics

Award Information
Agency: Department of Defense
Branch: Missile Defense Agency
Contract: W9113M-09-C-0028
Agency Tracking Number: B074-006-0097
Amount: $750,000.00
Phase: Phase II
Program: STTR
Awards Year: 2009
Solicitation Year: 2007
Solicitation Topic Code: MDA07-T006
Solicitation Number: N/A
Small Business Information
7900 West 78th St., Suite 300, Minneapolis, MN, 55439
DUNS: 938966090
HUBZone Owned: N
Woman Owned: N
Socially and Economically Disadvantaged: N
Principal Investigator
 Troy Marusich
 Chief Technical Officer
 (952) 832-5515
 troym@thirdwavesys.com
Business Contact
 Lisa Ferris
Title: Chief Operating Officer
Phone: (952) 832-5515
Email: lisa.ferris@thirdwavesys.com
Research Institution
 Western Michigan University
 John Patten
 1903 West Michigan Ave
College of Engineering
Kalamazoo, MI, 49008
 (269) 276-3246
 Nonprofit college or university
Abstract
Freeform optical surfaces offer advantages over axisymmetric surfaces in the ability to reduce optical sizes, increase performance and reduce aberrations. However, the description, fabrication and metrology of these surfaces can be difficult and costly, prohibiting their ability to achieve their full potential. Fabrication of these surfaces can be difficult since they are not axisymmetric and have varying local radii of curvature, rendering grinding, lapping and polishing of these surfaces untenable. A method to overcome the difficulties in fabrication of freeform surfaces is to apply ductile mode machining (DMM) to eliminate grinding, lapping and polishing. DMM has been demonstrated on SiC mirror representative of freeform optics in Phase I. Through the use of physics-based modeling, DMM conditions can be identified where material removal results in ductile chip formation, damage free surfaces and excellent surface finish. This STTR activity extends the technology of DMM to freeform configurations enabled by physics-based modeling techniques. We will further develop, enhance and validate the modeling capability and apply it to CVD coated SiC freeform optics. Backed by modeling data, we will perform a set of machining experiments to ascertain the DMM operating envelope and subsequently demonstrate the fabrication of a full scale freeform optic.

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

Agency Micro-sites

SBA logo
Department of Agriculture logo
Department of Commerce logo
Department of Defense logo
Department of Education logo
Department of Energy logo
Department of Health and Human Services logo
Department of Homeland Security logo
Department of Transportation logo
Environmental Protection Agency logo
National Aeronautics and Space Administration logo
National Science Foundation logo
US Flag An Official Website of the United States Government