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INTERFEROMETER

Photonics Spectra
Apr 2004
QED Technologies Inc.Request Info
 
QED Technologies introduces a subaperture stitching interferometer that, it says, increases the utility of a standard Fizeau interferometer by more than five times. SSI, a six-axis computer-controlled workstation, provides automated, high-precision metrology for up to 200-mm-diameter plano, convex and concave parts with clear apertures and high numerical apertures, including hemispherical components. One benefit is automated subtraction of the reference optic's quality. The instrument can be used as a stand-alone metrology system or in combination with the company's Q22 magnetorheological finishing machines.


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GLOSSARY
Fizeau interferometer
A type of interferometer noted for producing narrow multiple-beam interference fringes. As a result, when compared with the Twyman-Green, the Fizeau interferometer has fewer optical components, does not have the large beamsplitter and can be adjusted to a greater accuracy.  
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