Request InfoOptical Surfaces Ltd.• surface roughness 10 Å rms • surface accuracy l/20 • quality testing assurance In a thermally stable manufacturing environment, Optical Surfaces Ltd. fabricates 600-mm-diameter reference flats with a surface accuracy of λ/20 peak to valley and surface roughness of 10 Å rms. The company works with high-stability materials such as glass, Zerodur and silica, and all of its reference flats are supplied with full quality testing assurance. Optics of up to 450-mm diameters are provided with a Fizeau interferometric test report, and the quality of larger flats is...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra January 2024 IssueMirror MountsThe OS series of large-diameter mirror mounts from Optical Surfaces Ltd. provides a secure platform for larger, high-precision flat, off-axis, and spherical mirrors. 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