Request InfoOptical Surfaces Ltd.Working with high-stability materials such as glass, Zerodur and silica, Optical Surfaces Ltd. supplies high-precision reference flats that are used to measure the surface accuracy or the transmitted wavefront of flat surfaces or optics. Benefiting from a thermally stable manufacturing environment, the company achieves a surface accuracy of λ/20 peak-to-valley and surface roughness of <1 nm on reference flats up to 600 mm in diameter. The reference flats are used in high-precision applications in astronomy, laser beam steering, inspecting gauge blocks, and interferometric flatness...See full productRelated content from Photonics MediaPRODUCTSPhotonics.com 10/19/2022Optical 3D Measuring MachineThe ScanBox Series 5 from ZEISS Industrial Quality Solutions is an optical 3D measuring machine that captures the entire surface geometry, as well as hole patterns and other characteristics of the...Vision Spectra Summer 2023 IssueTelecentric LensesThe TC4MHRP and TC4MHRP CORE high-resolution telecentric lenses from Opto Engineering are designed for sensors up to 4/3-in. With a large optical aperture, the optics offer low distortion, high...BioPhotonics Mar/Apr 2023 IssueCompact SpectrometersThe compact ROCK VIS and VIS-NIR spectrometers from Ibsen Photonics are designed for blood gas analysis. 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