5.) Final Results: FreeForm  Introduction on ~150mm Φ sphere


mrf application 7 pict5Final Results

  • 440x RMS improvement!
  • 360x PV improvement!


Cycle Time:

  • Total of only 6 hours!
  • Over 3 runs!


PV Error was improved from 12.18 waves to 0.034 waves!


  1. Plots on same scale
  2. Piston, tilt & power removed
  3. 3 pixel by 3 pixel median filter applied
  4. Cropped to clear aperture




Two new features of the Q-flex platform enable powerful new MRF capabilities

Modularity of Polishing Wheels (MRF Heads) and Delivery System (MRF FCM) allows:

  • Rapid configuration changeover: Change wheels quickly and  Change fluids quickly

  • Multiple wheel orientations: Traditional (rotational polishing) and  Rotated 90º, which enables full freeform raster polishing


In this case study, we combine these new features to create a mild freeform optic with

  • Ultra-high precision

  • Ultra-low levels of mid-spatial frequencies