SSI Applications

Case Study Summary Focusing on the repeatability of SSI-based measurements, this study confirms the system’s ability to provide consistent results across multiple scans of the same concave spherical optic. Achieving a mean RMS value of 5.60 nm with minimal variance (standard deviation of 0.007 nm), the findings reinforce SSI’s utility in production environments where consistent

Case Study Summary This case study showcases SSI’s ability to perform sub-nanometer precision measurements on high-precision aspheres. By analyzing two sets of 10 stitched measurements with slightly different scan lattices, QED demonstrates pixel-by-pixel subtraction techniques that yield RMS differences around 0.1 nm. This level of agreement confirms the system’s capability to reliably characterize complex optical

Case Study Summary This case study explores the accuracy and repeatability of QED Technologies’ Subaperture Stitching Interferometry (SSI®) in measuring high-precision spherical optics. Using a concave test sphere with a 25 mm radius and 36 mm aperture, the study highlights SSI’s ability to consistently measure surface form to a repeatability of just 0.007 nm RMS,

Case Study Summary This study highlights the exceptional measurement repeatability and accuracy of QED’s Subaperture Stitching Interferometry (SSI) technology. Through rigorous testing on a small, fast reference sphere, the SSI system demonstrated sub-nanometer repeatability with a mean RMS value of 5.60 nm and a variation range as low as 0.025 nm. Cross-validation between different measurement