Shape Measurement

Surface shape is the overall geometry of the area of interest, where the area of interest can vary according to the application.

For example, if you were measuring the topography of a micro-lens, “shape” might be described as a measurement of the lens’s curvature, as compared to a manufacturing specification.

Ultimately, this is a measure of the lens’s ability to focus correctly.

Other shapes of interest in materials sciences and engineering are planes, spheres, toroids, cylinders, parabolas and aspherical and free-form curves.

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Optical profilers like ProFilm3D are interference microscopes and are used to measure height variations – such as surface roughness – on surfaces with great precision using the wavelength of light.


Surface measurement, synonymous with surface metrology is able to determine surface topography, which is essential for confirming a surface’s suitability for its function.


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