At the heart of the system is the patented Dynamic Interferometry\u00ae Technology<\/strong> by 4D Technology. Unlike traditional phase-shifting interferometers, a complete measurement is performed in less than 30 microseconds<\/strong> recorded. As a result, vibrations, air turbulence, and other environmental factors have significantly less time to affect the measurement result.<\/p>\n The PhaseCam thus enables precise interferometric measurements even under conditions in which conventional interferometers would require elaborate vibration isolation or a controlled measurement environment.<\/p>\n The combination of dynamic measurement and the SWIR wavelength makes the PhaseCam particularly well-suited for large optical systems. Typical measurement objects include telescope mirrors, concave and convex optical elements, lens systems, collimators, and complete optical assemblies.<\/p>\n Because of its high resistance to environmental disturbances, measurements can be performed not only in a traditional optics laboratory, but also in manufacturing environments, test benches, and on large or difficult-to-transport optical systems.<\/p>\n Conventional phase-shifting interferometers require multiple consecutive measurements. Movements between these measurements can affect the measurement results. In contrast, Dynamic Interferometry\u00ae technology captures the information needed for phase determination virtually simultaneously.<\/p>\n This makes it possible to analyze dynamic processes and perform highly precise measurements even in the presence of vibrations, air movements, or mechanically less stable measurement setups.<\/p>\nMetrology of large optics and telescope systems<\/h2>\n
Dynamic Interferometry\u00ae \u2013 Measurement Without Conventional Phase Shifting<\/h2>\n
Advantages of the PhaseCam SWIR<\/h3>\n
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