Form Talysurf® PGI Freeform

3D Freeform Optics Profilometer for Surface Finish & Form Measurement

The Form Talysurf® PGI Freeform (Phase Grating Interferometer) is a versatile, high resolution 3D Freeform profilometer for high precision measurement. It performs surface finish and form analysis for freeform optics.

  • Overview +

    A fully automated, fast and accurate system for freeform optics measurement.

    The Form Talysurf® PGI Freeform provides 3D raster/radial measurement and analysis of spheres, aspheres, diffractives and freeforms. Reduced measurement cycle time with fully automated routines and analysis including batch measurements for freeform surfaces.

    Versatile and easy to use

    • Gauge range up to 28 mm*
    • Resolution down to 0.8 nm
    • Slope up to 50°
    • Measurement accuracy from 100 nm (PV)

    The Form Talysurf® PGI Freeform can work with many of the latest equations used for definition of freeform surfaces such as Toric, Bi-conic, Anamorphic asphere, Ellipsoid, NURBS, Zernike, A-Cylinder and Cloud of points.

    3D calibration capability delivers unparalleled measurement

    Accurate 3D measurements to optical levels of accuracy cannot be achieved by simply adding a Y-stage.

    • Unique, new true 3D calibration
    • Corrects for alignment errors beyond those mechanically possible
    • Critical for accurate 3D measurements
    • Measurement accuracy from 100 nm (PV)
    • Typical form errors with 3D calibration - <150 nm

    Full 3D measurements for accurate surface analysis

    • Easy to define measurement set-up
    • 3D point cloud raw surfaces
    • Dedicated freeform analysis utility allows raw surface comparison to design
    • Residual surface shows form error
    • Output residual surface for connection to manufacturing process

    * Using 14 mm gauge and 120 mm stylus.

  • Videos +



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