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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.
- Ann Arbor Optical Co., Div. of Data Optics Inc.
Hamburg Township, MI
Supplier/Distributor - Gage-Line Technology Inc.
Rochester, NY
Custom Manufacturer - Graticules Optics Ltd., Sub. of SDI Group plc
Tonbridge, United Kingdom
Stock Manufacturer • Custom Manufacturer - Opto-Line International Inc.
Wilmington, MA
Custom Manufacturer - Plymouth Grating Laboratory Inc.
Carver, MA
Custom Manufacturer - Suzhou Jiujon Optics Co. Ltd.
Suzhou, China
Custom Manufacturer - Xerox Corp., Imaging Standards
Webster, NY
Custom Manufacturer
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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.
nonspherical mirrorsFoucault knife-edge testcurved shadowscurved linesrulingsstraight shadowsgratings ronchiFoucault testoptics