Magnetorheological Finishing (MRF)

Magnetorheological Finishing (MRF)

Magnetorheological Finishing (MRF) is a deterministic lens surface finishing process which G&H uses to improve form finish of precision optical components. This technique enables us to control optical polishing with a greater degree of precision than conventional lap polishing. These complement existing polishing capabilities for surface correction when enhanced precision is required to produce complex optics.

Characteristics
MRF polishing service Flats, spherical lenses and aspheres
Material Common glasses (Schott, Ohara, Hoya, Sumita, CDGM, etc.), fused silica, glass ceramics, calcium fluoride, silicon, germanium. Refer to materials table for further details.
Sizes Up to 200 mm in diameter
Form figure Up to λ/50 P-V
Metrology Sub-aperture stitching interferometer (SSI) to measure high numerical aperture, large clear aperture parts, transmitted wavefront testing.

For more information on how our MRF capabilities can work for you please contact us.