Request Info4D Technology Corporation4D Technology has introduced a suite of products for high-quality, low-cost measurement of 300-mm-diameter optics. The system, designed around an AccuFiz 100-mm aperture interferometer, includes a 100- to 300-mm beam expander, a 300-mm rotational mount for tip/tilt and rotation adjustment, and an external phase shifting mount that adds the ability to measure in remote cavity configurations.See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra November 2022 IssueThin-film PolarizersThin-film Polarizers from Knight Optical Ltd. are coated with dielectric multilayers. Featuring high efficiency due to negligible absorbance within the coating, the polarizers are available for...Photonics Spectra June 2022 IssueFocus Tunable LensThe EL-12-30-TC focus tunable lens from Optotune AG is a liquid optic that provides high performance in a compact form-factor. 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