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12 September 2021 Flexible and fast measurement of large off-axis optics using a non-contact coordinate measuring machine
R. Henselmans
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Proceedings Volume 11873, Optical Fabrication, Testing, and Metrology VII; 118730B (2021) https://doi.org/10.1117/12.2597027
Event: SPIE Optical Systems Design, 2021, Online Only
Abstract
Optical systems often employ off-axis optics to prevent obscuration or because of geometric constraints. Measuring these optics in conventional interferometric setups is challenging: for cases other than off-axis parabolas, a CGH has to be used and setup size grows with the off-axis distance and radius of curvature. Measuring large convex surfaces is particularly difficult. Measurements of theses surfaces using a DUI NMF600 S cylindrical non-contact measurement machine will be demonstrated, showing flexibility, high point density, short measurement times and no setup cost.
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R. Henselmans "Flexible and fast measurement of large off-axis optics using a non-contact coordinate measuring machine", Proc. SPIE 11873, Optical Fabrication, Testing, and Metrology VII, 118730B (12 September 2021); https://doi.org/10.1117/12.2597027
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KEYWORDS
Aspheric lenses
Interferometry
Spindles
Diamond turning
Metrology
Off axis mirrors
Spherical lenses
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