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Application of Zeeko's Novel Random Tool Path for Improvement of Surface PSD

Award Information

Agency:
National Aeronautics and Space Administration
Branch:
N/A
Award ID:
90836
Program Year/Program:
2009 / SBIR
Agency Tracking Number:
084999
Solicitation Year:
N/A
Solicitation Topic Code:
N/A
Solicitation Number:
N/A
Small Business Information
Zeeko Technologies, LLC
3495 Kent Avenue, K100 West Lafayette, IN 47906-5391
View profile »
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No
 
Phase 1
Fiscal Year: 2009
Title: Application of Zeeko's Novel Random Tool Path for Improvement of Surface PSD
Agency: NASA
Contract: NNX09CF41P
Award Amount: $84,321.00
 

Abstract:

A well known problem in the fabrication of aspheric optical surfaces lies in surface irregularities inherent in the figuring process. Low-spatial frequency errors (figure errors) cause distortion in the system wavefront, resulting in degradation of the point spread function. Mid-spatial frequency errors cause small-angle scattering of light (flare), which reduces image contrast. High-spatial frequency errors scatter light out of the optical beam over larger angles, reducing the energy throughput in an optical system. The Zeeko Precessions polishing is a sub-aperture process that has been developed for the control of form and texture in the production of aspheric and other optical surfaces. The Precessions process is deterministic and provides dramatic reductions in production time due to its high removal rate and repeatability. Similar to other sub-aperture finishing processes, the Precessions process is prone to leave mid-spatial frequency defects on the surface. Zeeko has developed a unicursal random tool path that does not follow a regular pattern and is non-crossing. The goal of this Phase I project is to expand on promising initial results obtained by using the random tool path. The results generated by the research project will be used to demonstrate and improve the performance of the Zeeko polisher for this critical application. We propose a study that employs the polishing methodology used by Zeeko Technologies to determine whether trial procedures using the Zeeko approach can effectively correctively finish an optic without inducing unwanted frequencies onto the surface of the part.

Principal Investigator:

John Kelchner
Principal Investigator
7657751010
john.kelchner@zeekotechnologies.com

Business Contact:

John Kelchner
Business Official
7657751010
john.kelchner@zeekotechnologies.com
Small Business Information at Submission:

Zeeko Technologies, LLC
3495 Kent Avenue, K100 West Lafayette, IN 47906

EIN/Tax ID: 201823185
DUNS: N/A
Number of Employees:
Woman-Owned: No
Minority-Owned: No
HUBZone-Owned: No