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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
Gage-Line Technology Inc. - Rochester, NY
Graticules Optics Ltd. - Tonbridge, United Kingdom
Opto-Line International Inc. - Wilmington, MA
Plymouth Grating Laboratory Inc. - Carver, MA
Suzhou Jiujon Optics Co. Ltd. - Suzhou, China
Xerox Corp., Imaging Standards - Webster, NY
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.
Ronchi Gratings Suppliersnonspherical mirrorsFoucault knife-edge testcurved shadowscurved linesrulingsstraight shadowsgratings ronchiFoucault testoptics

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