NMF Applications

Case Study Summary This case study demonstrates how QED’s NMF metrology systems can accurately measure challenging AR-coated optical surfaces, even in the presence of non-uniform coatings that distort typical optical signals. The study outlines the use of a model-based correction method that compensates for coating-induced errors, enabling precise surface form measurements on optics with extreme

Case Study Summary In this application note, QED explores how NMF metrology provides comprehensive dual-sided measurement of high-precision lenses. By enabling simultaneous surface form analysis and lens centering tolerance assessment, the NMF platform delivers essential data for aligning optical components to tight mechanical and optical specifications. The study emphasizes how the system’s nanometer accuracy and

Case Study Summary This case study highlights the power of QED’s NMF system in handling large, complex freeform optics with off-axis geometries. The non-contact, cylindrical-coordinate measurement approach enables high-resolution data acquisition across asymmetric shapes—without the need for part-specific fixtures. With support for steep slopes and large departures from best-fit aspheres, this example showcases how NMF

Combine Optical and Tactile Measurements for Sub-Aperture Form Evaluation This study presents a hybrid approach that leverages NMF’s high-resolution optical scanning alongside tactile profilometry to enhance confidence in surface data, especially for sub-aperture and freeform applications. By comparing non-contact and contact measurement results, the team validates surface form data while compensating for coating and material

Next to polished surfaces, the optical probe of the NMF machines can also measure ground surfaces. This brings the versatility, speed and accuracy to surfaces that can normally only be measured after a first polishing step. The high measurement speed associated with the motion platform and the optical probe, translate in the ability to acquire