Request InfoOptical Surfaces Ltd.KENLEY, UK, June 10, 2015 — Designed to collimate broadband light, off-axis parabolic mirrors from Optical Surfaces Ltd. are manufactured for demanding tolerances. The mirrors are commonly used as collimators in imaging systems, high-power laser focusing, astronomy, beam expansion, and bore sight alignment for missile guidance systems. Depending on the surface accuracy required, a natural limit to the off-axis angle can be achieved around 25 to 30° with surface microroughness of less than 1 nm. A range of coatings is available, from metallic to multilayer dielectrics, suiting all applications.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. Constructed in black anodized aluminum, the device’s...Photonics Spectra September 2023 IssueModular Beam ExpanderOptical Surfaces’ pre-aligned large diameter beam expander modules enable complex 5-degrees of freedom set-up in a matter of minutes. The modular beam expander assembly components include...Photonics 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. Delivering artifact-free high magnification,...Photonics Spectra January 2023 IssueSteering MirrorsPiezo and voice-coil steering mirrors from Physik Instrumente LP are designed for free space optical communications. 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A transmission grating, however, opens up many new options for the optical...Photonics.com 8/25/2022Diffraction Gratings - an IntroductionThis paper is ideal for those wanting an introductory guide to the various types of diffraction gratings and understanding their advantages and disadvantages as well as including some useful grating...Photonics.com 1/16/2024Antireflection Coatings for Space ApplicationsSpace can be a harsh environment for optical coatings. Optimax has successfully provided antireflection (AR) coatings for a wide range of space applications. 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Any scratch, dig, chip pinhole, or other defect will...PHOTONICS DICTIONARY+ TERMSPhotonics DictionaryFizeau fringesFizeau fringes are interference fringes observed in an interferometer, specifically in a Fizeau interferometer. The Fizeau interferometer is named after the French physicist Armand Fizeau, who...Photonics Dictionarymagnetorheological finishingMagnetorheological finishing (MRF) is a precision optics polishing technique used for shaping and finishing optical surfaces to achieve extremely high levels of smoothness and accuracy. It is...Photonics Dictionarylateral shearing interferometerA lateral shearing interferometer is an optical device used in interferometry to measure phase differences between two beams of light. 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You will learn about Kron and John filters, Gaia filters and Sloan filters, and...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...Astronomical MirrorsAn astronomical mirror, also known as a telescope mirror or primary mirror, is a key component of a reflecting telescope. It serves as the primary optical element responsible for gathering and...Astronomical OpticsAngular and Linear Measuring InterferometersCOMPANIESPhotonics Buyers' GuideLaCroix Precision OpticsThe LaCroix name is synonymous with quality precision optics. 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