Science
New device measures curved mirrors' absolute shape to within 2 nanometers without touching them
Researchers at AIST have developed a device that measures the absolute surface profile of curved optical elements with high precision without touching them.
Summary
Researchers at AIST have developed a device that measures the absolute surface profile of curved optical elements with high precision without touching them. High-precision curved mirrors are used for light collection and wavefront control in extreme ultraviolet (EUV) lithography systems, synchrotron facilities, astronomical telescopes, gravitational wave detectors and more.
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