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Ronchi Gratings
Argyle International is Manufacturing Mini and Micro Lens Elements
Large Fresnel Lens
UV Cold Mirrors
High Temperature Coatings
LWIR Fixed Focus Objectives
C-Mount Lenses
Plastic Sheet Lenses and Molds
Precision Patterned Components
(12 companies)
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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Max Levy Autograph, Inc., Sub. of II-VI Incorporated - Philadelphia, PA
Specializes in ultraprecision patterned components for the photonic, military/aerospace, semiconductor and metrology industries. Applications range from the x-ray out to infrared. Major manufacturing process capabilities include: photolithography, electroforming, photochemical etching, film...
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Manufacture Custom
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Applied Image Inc. - Rochester, NY
APPLIED IMAGE is world-renowned for its wide range of high quality off-the-shelf product lines as well as its custom manufacturing capabilities using the latest technologies and material to produce to your exact needs and specifications. APPLIED is truly a one-stop-shop; from design and prototype...
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Manufacture Custom
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Gurley Precision Instruments, Inc. - Troy, NY
Manufactures stock and custom reticles, lenses, prisms, mirrors, resolution targets, step wedges, divided circles, absolute and incremental discs/scales, precision patterns and replications, measuring devices, rotary/linear encoders, engineering and surveying instruments and digital readout systems...
Manufacture Custom
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Hellma USA, Inc., Sub. of Hellma GmbH & Co. KG - Plainview, NY
Manufactures and supplies Hellma cells, fiber optic probes, photometric calibration standards, flat and cylindrical optics and accessories for lasers, spectrophotometers and fluorometers. Supplies Heraeus light sources including vacuum UV, deuterium, hollow cathode, PID spectral calibration and...
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Metrigraphics, LLC - Wilmington, MA
Worldwide supplier of high-precision photolithographic services. Core technologies include high resolution photolithography, micro-miniature electroforming, ion-beam etching and thin-film sputter deposition. Microfluidic nozzles and orifice plates. Extreme density flex circuits. Precision patterns...
Manufacture Custom
ADDITIONAL COMPANIES
Ann Arbor Optical Co., Division of Data Optics, Inc. - Ypsilanti, MI
Gage-Line Technology, Inc. - Rochester, NY
IMT Masken und Teilungen AG, Sub. of Heidenhain Group - Greifensee, Switzerland
Opto-Line International Inc. - Wilmington, MA
Plymouth Grating Laboratory, Inc. - Carver, MA
Pyser-SGI Ltd. - Edenbridge, England
Xerox Corp., Imaging Standards - Webster, NY
TERMS
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.
TAGS
nonspherical mirrors
Foucault knife-edge test
curved shadows
curved lines
straight shadows
gratings ronchi
Foucault test
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