Cryo-VaC and thermal chamber testing

Manufacturers and integrators of space-based optics ensure performance by testing at extremely low pressures and temperatures. The environmental chambers used for cryogenic-vacuum testing provide extremely challenging environments for precision testing of space-borne optical systems, however. The pumps and support equipment produce a large amount of vibration that is detrimental to measurements. And, the metrology instrument must be maintained at standard pressure and temperature, meaning it must be isolated from the test article, sometimes by many meters and many optical windows.

Instantaneous measurement with Dynamic Interferometry^® technology makes it possible to measure optics in environmental test chambers despite the vibration and turbulence caused by pumps and equipment. Vibration isolation tables are not required, which greatly increases the options for testing setups.

With a wide range of wavelength options, 4D dynamic laser interferometers offer flexible quality control testing in cryogenic environments or other challenging test conditions, for visible and IR optics.