4D Technology

SPIE Astronomical Telescopes + Instrumentation 2026
2026-07-07 - 2026-07-09 | Bella Center Copenhagen
Join us in Copenhagen, Denmark, July 7-9 to see our latest optical interferometer innovations!
Stop by booth #219 where we will be showcasing our PhaseCam and NanoCam; and bring your samples by to get measurements right on the show floor! Learn about 4D Technology’s extensive product portfolio, including:

AccuFiz Fizeau interferometers: Compact, high-performance Fizeau interferometers for shop-wide optics measurement at visible to SWIR wavelengths.
AccuFiz D and Duo interferometers: short coherence Fizeau interferometers for measuring thin, transparent, plane-parallel surfaces < 0.2mm apart without the need for coating.
PhaseCam: vibration-immune Twyman-Green interferometer with high power for measuring large optics and systems, and for long measurement paths. Its super-fast single-frame data acquisition enables measurement despite vibration and turbulence
IR Systems: Measure at wavelength with our PhaseCam and AccuFiz IR systems. NIR – SWIR – MWIR – LWIR
NanoCam HD: a small, non-contact optical profiler for vibration-immune roughness measurement in challenging conditions
