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PhaseCam 5030 Dynamic Interferometer
Aug 2007
4D Technology CorporationRequest Info
TUCSON, Arix., Aug. 24, 2007 -- The PhaseCam 5030 is a high-performance, Twyman-Green interferometer developed specifically to measure meter-class optics for terrestrial and space-based telescopes.

Unlike traditional phase-shifting interferometers, the PhaseCam uses dynamic interferometry to acquire all measurement information in a single exposure, enabling measurement in the presence of vibration and air turbulence. The system is remotely operated for permanent mounting in measurement towers, environmental testing chambers or other locations where access to an interferometer is difficult.

phasecam5030.jpg"Measuring the surface quality of large optics has long been a considerable challenge for telescope and satellite manufacturers," 4D said. "Conventional interferometers are significantly impaired by vibration and environmental noise, requiring extensive and costly measures to couple the instrument and test piece, and to isolate both from vibration sources. Because these measurements often require that the interferometer be placed many tens of meters from the optic, air turbulence also greatly diminishes the accuracy of traditional systems."

The PhaseCam 5030 includes a high-speed optical phase sensor that eliminates the need for slow, piezo-based phase-shifters, allowing the system to measure more than 10,000 times faster than a conventional, phase-shifting interferometer.

Because of this near-instantaneous measurement speed, the PhaseCam is virtually immune to environmental noise and requires no vibration-isolation system. Measurement-averaging software overcomes the effects of air turbulence, resulting in highly accurate measurements even when the system is located tens of meters from a test piece.

The turnkey PhaseCam system includes an interferometer, high-speed computer system and extended-length cables for remote operation. 4Sight analysis software, included with the PhaseCam, provides extensive 2-D and 3-D analysis options, as well as comprehensive data filtering, masking, database and import/export functions.

The PhaseCam 5030 is suited for metrology of large optical elements, astronomical optics, aerospace systems, directed energy optics, cleanroom applications that are typically hampered by air flow turbulence, and for use in vacuum and environmental chambers.

For more information, visit:

4D Technology
3280 E Hemisphere Loop
Suite 146
Tucson, AZ 85706
Phone: (520) 294-5600
Toll Free: (800) 261-6640
Fax: (520) 294-5601


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