Due to their stable design, Fizeau interferometers are used to determine the topography of surfaces such as, e.g., plane surfaces. PTB has now developed a method which makes it possible to analyze ...

In order to push the performance of optical systems, aspheric- and freeform surfaces are used in state-of-the-art optic design for correcting aberrations. The production of these complex-shaped ...

High precision, dynamic interferometer combines short and long coherence capabilities into one system for measuring an expanded range of optics. The AccuFiz Duo Fizeau interferometer combines short ...

The beam of a laser is expanded by a telescope (expander) to illuminate a point source array (PSA). The PSA contains diffractive microlenses on its front side that focus the incoming light onto a ...

Fizeau's fringes occur in interferometry. Fizeau's fringes occur in interferometry. One of the most common methods used to test the flatness of a polished surface is by analysing the interference ...

A FOURTH volume describing the researches of Prof. Carl Barus with interferometers has recently been issued. The classical work of Fizeau, who applied interference methods to the determination of ...

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