Article | May 14, 2021

Why Computer-Generated Holograms (CGH) Matter In Asphere Metrology

Aspheres and other complex optical surface shapes have become common to many optical systems as they offer wider design flexibility, lighter weight, smaller volume, and optimized optical performance.  CGHs are a natural extension of Fizeau interferometry, the industry standard for optics metrology, and offer significant benefits for metrology of aspheres.  But challenges remain for CGHs in production applications.

How Does Computer-Generated Hologram Work?

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