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New Probe to Measure Freeform Optics

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ROCHESTER, N.Y., May 15, 2009 -- Demand for freeform optical elements is on the rise, and they have gotten easier to make, but at the moment no commercial systems exist to measure such components. Researchers at ASE Optics Inc. in Rochester, N.Y., have demonstrated that a scanning low-coherence dual-wavelength interferometer can measure the transmitted wavefront of hemispheric dome optics with accuracy by mapping optical thickness as a fiber-optic probe is scanned over the optic to be tested. Now the research team is looking at more generalized freeform surfaces. In a talk at Optifab 2009 in Rochester, Damon W. Diehl of...Read full article

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    Published: May 2009
    Glossary
    freeform optics
    Freeform optics refers to the design and fabrication of optical surfaces that do not follow traditional symmetric shapes, such as spheres or aspheres. Unlike standard optical components with symmetric and rotationally invariant surfaces, freeform optics feature non-rotationally symmetric and often complex surfaces. These surfaces can be tailored to meet specific optical requirements, offering greater flexibility in designing optical systems and achieving improved performance. Key points about...
    metrology
    Metrology is the science and practice of measurement. It encompasses the theoretical and practical aspects of measurement, including the development of measurement standards, techniques, and instruments, as well as the application of measurement principles in various fields. The primary objectives of metrology are to ensure accuracy, reliability, and consistency in measurements and to establish traceability to recognized standards. Metrology plays a crucial role in science, industry,...
    photonics
    The technology of generating and harnessing light and other forms of radiant energy whose quantum unit is the photon. The science includes light emission, transmission, deflection, amplification and detection by optical components and instruments, lasers and other light sources, fiber optics, electro-optical instrumentation, related hardware and electronics, and sophisticated systems. The range of applications of photonics extends from energy generation to detection to communications and...
    polishing
    The optical process, following grinding, that puts a highly finished, smooth and apparently amorphous surface on a lens or a mirror.
    ASE Optics Inc.BusinessChristopher J. DitchmanChristopher T. CottonDamon W. Diehlfreeform opticsFreeform ShapesInterfometersLow-Coherence Dual-Wavelength InterferometermetrologyOpti-Gauge Probeoptical elementsOpticsphotonicspolishingQuad-Probe ProjectsResearch & TechnologySpherical Objects

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