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The dispersing medium may be a prism or a diffraction grating.Laser Speckle InterferometersOptical TachometersCOMPANIESPhotonics Buyers' GuideLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. Since 1947, three generations of family leadership have guided LaCroix Precision Optics to become the premier precision optics...Photonics Buyers' GuideOptikos CorporationThe Optical Engineering Experts® Optikos designs and manufactures metrology products for measuring and assuring optical image quality; and provides optical engineering design, development,...Photonics Buyers' GuideApre InstrumentsStay ahead of your competition with interferometers the meet today's manufacturing challenges. Äpre interferometers have the highest resolution, largest native aperture range, and lowest retrace...Photonics Buyers' GuideAvantier Inc.Avantier Inc. is an unparalleled leader in providing innovative imaging systems solutions and optical systems solutions. 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