Founded in 2002, 4D Technology is a manufacturer of interferometer systems for the accurate measurement of optical-grade surfaces. It offers a range of laser interferometer for optical testing, astronomy, directed energy, data storage and satellite optics. The company serves the aerospace, medical, semiconductor, optical fabrication and flat-panel display markets. 4D Technology features products under the PhaseCam, FizCam, WaveCam, DiskCam and SpeckleCam models. It also provides the 4Sight data analysis software. The company offers installation and training services for measurement systems. 4D Technology also provides upgrading services for old interferometer systems. Its clients include Boeing, Raytheon Company, ITT Corporation, Ball Aerospace, Northrop Grumman Corporation, Sandia Corporation and the National Aeronautics and Space Administration.