Request InfoQED Technologies Inc.QED Technologies introduces a subaperture stitching interferometer that, it says, increases the utility of a standard Fizeau interferometer by more than five times. SSI, a six-axis computer-controlled workstation, provides automated, high-precision metrology for up to 200-mm-diameter plano, convex and concave parts with clear apertures and high numerical apertures, including hemispherical components. One benefit is automated subtraction of the reference optic's quality. The instrument can be used as a stand-alone metrology system or in combination with the company's Q22 magnetorheological...See full productRelated content from Photonics MediaPRODUCTSPhotonics Spectra September 2022 IssueFizeau InterferometerThe AccuFiz® Fizeau interferometer from 4D Technology Corp. now features a 9-MP camera for higher slope tolerance through superior spatial resolution. 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The technology...PHOTONICS HANDBOOK ARTICLESPhotonics HandbookInterferometry: Measuring with LightAn interferometer is an instrument that compares the position or surface structure of two objects. The basic two-beam division of amplitude interferometer components consists of a light source, a...Photonics HandbookBroadband Spectrophotometry: A Fast, Simple, Accurate ToolDesigning devices that incorporate ultrathin films is an important means of enhancing yields. However, characterizing ultrathin films provides a challenge for mainstream metrology tools such as...Photonics HandbookImaging Colorimetry: Accuracy in Display and Light Source MetrologyThe market for flat panel displays (FPDs) has undergone tremendous growth, driven mostly by increased demand for televisions, cell phones, computers, digital cameras and MP3 players. 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