Request InfoOptical Surfaces Ltd.Optical Surfaces Ltd. can typically produce off-axis parabolic mirrors up to 600 mm in diameter with surface accuracies to λ/20 peak-to-valley, depending upon off-axis angles. With proprietary polishing techniques, the company can, depending upon the surface accuracy required, achieve the natural limit to the off-axis angle of around 25° to 30° and surface micro-roughness on aspherics of ~1 nm rms. Coatings are available for standard and custom components from metallic, with or without protective overcoat, to multilayer dielectrics and ultrahard coatings. Applications include...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra July 2023 IssueMirror MountsWedged back paraboloid mounts from Optical Surfaces Ltd. provide a secure and stable platform for mirror diameters from 50 to 200 mm. 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It serves as the primary optical element responsible for gathering and...Photonics Dictionaryastronomical photographyThe use of photographs to record astronomical objects and phenomena for purposes of physical observation and measurement of motion, radiation and spectra.Photonics Dictionaryastronomical cameraA camera designed to record astronomical objects (e.g., stars, planets, nebulae, galaxies) and their spectra.Photonics Dictionaryplasmon ion-assisted depositionPlasmon ion-assisted deposition (PIAD) is a technique used in thin-film deposition processes, particularly in the production of optical coatings. This method combines two key processes: plasmon...VIDEOSPhotonics.com 6/20/2023LASEROPTIK Blockbuster 4KWelcome to the movies and inside the home of laser optics and coatings! 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We understand how coated optical elements...Photonics Buyers' GuidePrecision OpticalPrecision Optical: our name embodies who we are. Since 1959, Precision Optical has earned a widely recognized reputation for reliability, value, and quality precision optics for the most demanding...