ESDI is a globally recognized leader in providing innovative surface & wavefront metrology solutions for astronomical, aerospace, optical fabrication & production metrology applications. ESDI’s innovative products include a sub-Nyquist nulling Fizeau interferometer for aspheric measurements, a "Real Time” vibration insensitive Fizeau interferometer, traditional phase-shifting Fizeau interferometers, the world-renowned IntelliWave™ software, and interferometer accessories & upgrades.