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Optical Glass Properties

Flatness and surface finish measurement service

Metrology Services for Flatness, Finish and Thickness
Try Valley Design for your precision metrology requirements. Valley provides flatness, surface roughness and thickness measurements for substrates, wafers, windows, thin wafers and substrates, transparent disks, vacuum chucks, metals, plastics, composites, ceramics.

Fizeau laser interferometer measures wavefront distortion and reflective flatness (figure) of thicker transparent parts:

  • Metal parts
  • Wafers
  • Substrates
  • Opaque parts

Indars Flatness Interferometer:

  • Parts up to 300mm and larger
  • Thin transparent parts
  • Any thickness transparent parts
  • Polished metals
  • Opaque wafers and substrates
  • Single side polished parts
  • Double side polished parts

WYKO lightwave interferometer: Surface finish readings with 1 Angstrom resolution. Print out graph reports are available.

Federal diamond needle surface finish 1 µ” and higher.

Hardcoating thickness measurements.

WYKO 3D Interferometric Surface Measurement Service
Non-contact optical profile measurements for surface roughness, thin film thickness, precision step heights, surface texture and form.

High Resolution 3D Surface Characterization
Surface peaks and valleys, step heights, surface roughness, texture variability, surface
flaws, pits, grooves, shape of plateaus, waviness, Ra, RS and RT measurements.

Measure Surfaces at Nanometer Level

  • MEMS devices
  • Polished surfaces
  • Etched surfaces
  • Laser texture
  • Thin film thicknesses
  • Fiber optics
  • Semiconductors
  • Ceramics
  • Optics
  • Precision machined surfaces

How does the WYKO non-contact optical interferometer work? Click here.