WYKO Mrau Interferometer Objective

[microb]

Using a 10x and 40x Mirau objective, fringing shows on a flat aluminum surface showing slight height differences. The color variances are the differences that can be measured in nanometers in height.

Now I need to figure out the algorithm based on white light interferometry.

[abednego1995]

That's interesting, why not use monochromatic light? That would greatly increase band-band contrast, and moreover if using a narrow band filter or source you can easily determine height difference with the wavelength.

Cheers,
John