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Abstract The Spallation Neutron Source (SNS) was designed and constructed by a collaboration of six U.S. Department of Energy national laboratories. The SNS accelerator system consists of a 1 GeV… (More)
Microstructured optical products are becoming more widespread due to advances in manufacturing. Many of these structures contain faceted surfaces with steep slopes. Adequate metrology for such… (More)
The fringe patterns seen when using moiré instruments are similar to the patterns seen in traditional interferometry but differ in the spacing between consecutive fringes. In traditional… (More)
Moire fringe projection techniques are gaining popularity due to their non-contact nature and high accuracy in measuring the surface shape of many objects. The fringe patterns seen when using these… (More)
This paper describes a method in which the overall geometry and form errors of each lens in a microlens array are measured simultaneously by the use of a planar wave.