Method and system for processing optical elements using magnetorheological finishing
Abstract
A method of finishing an optical element includes mounting the optical element in an optical mount having a plurality of fiducials overlapping with the optical element and obtaining a first metrology map for the optical element and the plurality of fiducials. The method also includes obtaining a second metrology map for the optical element without the plurality of fiducials, forming a difference map between the first metrology map and the second metrology map, and aligning the first metrology map and the second metrology map. The method further includes placing mathematical fiducials onto the second metrology map using the difference map to form a third metrology map and associating the third metrology map to the optical element. Moreover, the method includes mounting the optical element in the fixture in an MRF tool, positioning the optical element in the fixture; removing the plurality of fiducials, and finishing the optical element.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1078141
- Patent Number(s):
- 8271120
- Application Number:
- 61230793
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B24 - GRINDING B24B - MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE
Citation Formats
Menapace, Joseph Arthur, Schaffers, Kathleen Irene, Bayramian, Andrew James, and Molander, William A. Method and system for processing optical elements using magnetorheological finishing. United States: N. p., 2012.
Web.
Menapace, Joseph Arthur, Schaffers, Kathleen Irene, Bayramian, Andrew James, & Molander, William A. Method and system for processing optical elements using magnetorheological finishing. United States.
Menapace, Joseph Arthur, Schaffers, Kathleen Irene, Bayramian, Andrew James, and Molander, William A. Tue .
"Method and system for processing optical elements using magnetorheological finishing". United States. https://www.osti.gov/servlets/purl/1078141.
@article{osti_1078141,
title = {Method and system for processing optical elements using magnetorheological finishing},
author = {Menapace, Joseph Arthur and Schaffers, Kathleen Irene and Bayramian, Andrew James and Molander, William A},
abstractNote = {A method of finishing an optical element includes mounting the optical element in an optical mount having a plurality of fiducials overlapping with the optical element and obtaining a first metrology map for the optical element and the plurality of fiducials. The method also includes obtaining a second metrology map for the optical element without the plurality of fiducials, forming a difference map between the first metrology map and the second metrology map, and aligning the first metrology map and the second metrology map. The method further includes placing mathematical fiducials onto the second metrology map using the difference map to form a third metrology map and associating the third metrology map to the optical element. Moreover, the method includes mounting the optical element in the fixture in an MRF tool, positioning the optical element in the fixture; removing the plurality of fiducials, and finishing the optical element.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2012},
month = {9}
}
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