Request InfoOptical Surfaces Ltd.Off-Axis Paraboloids from Optical Surfaces Ltd. are suitable for broadband and multiple-wavelength applications due to their achromatic performance characteristics. The devices can be produced up to 600 mm in diameter. Using proprietary polishing techniques, they can achieve natural limit to the off-axis angle of around 25 to 30°, surface accuracies of lambda/20 pv and surface micro-roughness of 1 nm rms. A wide range of high-performance coatings is available for standard and custom off-axis paraboloids including metallic with or without protective overcoat, multilayer dielectrics...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra October 2022 IssueCompact Beam ExpandersThe A1 series of compact beam expanders from Optical Surfaces Ltd. delivers ×30 magnification from 2-mm aperture high-power laser beam lines. 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The separate...PHOTONICS BUYERS' GUIDE CATEGORIESFreeform OpticsFreeform optics refers to the design and fabrication of optical surfaces that do not follow traditional symmetric shapes, such as spheres or aspheres. Unlike standard optical components with...Angular and Linear Measuring InterferometersVariable Fiber Optic CouplersElectro-Optic CrystalsCOMPANIESPhotonics Buyers' GuideFOCtek Photonics Inc.FOCtek provides customers with all types of custom manufactured lenses, Precision Optical Components, Polarizing Optics, Prisms, Filters, Coatings, Optical Systems, Crystals, Nonlinear Crystals,...Photonics Buyers' GuideOhara CorporationOHARA manufactures more than 130 environmentally safe optical glass types, free of both lead and arsenic. More than 300 tons of optical glass are melted per month, available in the following forms of...Photonics 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' GuideExcelitas Technologies Corp.Excelitas Technologies® Corp. is a leading industrial technology manufacturer focused on delivering innovative, market-driven photonic solutions to meet the illumination, optical, optronic,...