4D Technology, an Onto Innovation subsidiary

4D Technology is the leader in high-resolution surface and wavefront measurements for challenging locations and applications. 4D Technology designs and manufactures laser interferometers, optical profilers, and 3D optical surface gauges. 4D pioneered “dynamic” measurement technology, paving the way for entirely new classes of instruments that change how manufacturers and scientists think about measurement. From the world’s premiere astronomical observatories, to optical manufacturing shops, to aerospace and defense applications, 4D instruments provide accurate 3D measurements, despite vibration and noise that stop other instruments in their tracks. Serving: precision machined surfaces, optics, astronomy, aerospace & defense, space-based telescopes, optical communications, automotive, and in-line production measurements.