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Lambda Research Optics, Inc. - Custom Optics
PowerPhotonic Ltd. - Bessel Beam Generator HP 6/24
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Ronchi Gratings

A ronchi grating is a transparent plate ruled with black lines and equal, clear spaces. It is used as a multiple knife-edge for testing a concave mirror.

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Ann Arbor Optical Co. - Hamburg Township, MI
Glossary
  • Ronchi grating A transparent plate ruled with black lines and equal, clear spaces. It is used as a multiple knife-edge for testing a concave mirror.
  • Foucault knife-edge test The Foucault test is performed by moving a knife edge laterally into the image of a small point source. The eye, or a camera, is placed immediately behind the knife edge, and the exit pupil of the system is observed.
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