Design
and manufacturing of
optical, optomechanical
and optronical
systems
You said "Magnetorheology" ?
SESO
purchased, in April 2002, a new production-ready Magnetorheological Finishing
(MRF) system. This technique is a real breakthrough for the polishing
and fine figuring of "industrial high precision" optics : a
magnetic fluid now replaces the conventional rigid polishing lap.
This machine (patented in the United States) is capable to achieve in
short processing times the final figuring of optics up to 200 mm diameter,
with accuracies of 5 nm.
For example ...
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Lens
before iteration
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 |
Lambda
/ 40 RMS
Total diameter : 47 mm Pv : 0.268 wv Rms : 0.026 wv |
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Lens after 10' iteration |
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Lambda
/ 140 RMS
Total diameter : 47 mm Pv: 0.157 wv Rms : 0.007wv |
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