4d Technologies
Architecture and PlanningCalifornia, United States2-10 Employees
4D Technology Corporation designs and manufactures dynamic interferometers used for metrology across general optics and specialized areas such as telescope and satellite optics, directed-energy systems, data storage, and flat-panel displays. These instruments enable precise measurements of optical surfaces, serving manufacturers and researchers that require high-accuracy metrology. The company is based in Tucson, Arizona, and operates with a small team in the architecture and planning industry. Among its recent developments, the company introduced the 4Di InSpec SR roughness measurement system in June 2026, described as portable and vibration-immune for high-precision 3D surface roughness measurements at the point of use. This addition reflects ongoing expansion of its metrology instrumentation offerings for optical surfaces.