Industry standard for precision and innovation: vibration-insensitive 3D measurement
4D Technology is the leader in high-resolution surface, geometry and wavefront measurements for challenging locations and applications.
Discover our Products & Solutions
Optical Metrology
Astronomy, Optics Manufacturing, Aerospace & Defense, Free-space Optics & Research
4D Technology’s Optical Metrology Products assure the quality of precision optics and optical systems. Our Dynamic Interferometry assures the surface and wavefront quality, despite vibration or turbulence.
It’s no surprise that virtually every space- and ground-based telescope for the last two decades has been tested with 4D instruments.
Across the spectrum, from UV to LWIR, 4D instruments, technology and software are everywhere optics are made and used.
Industrial Inspection
Aerospace, Aviation, MRO, Precision Machining, Medical Devices, Renewable Energy & Automotive
High-resolution, optical 3D measurement gauges you can bring right to your part. With one-button operation, quickly and accurately quantify defects such as pits, scratches, and corrosion and geometries such as edge break, chamfers, and radius.
Handheld, shop floor, and automated capabilities.
Measurement anywhere.
PhaseCam Twyman Green
- Twyman-Green interferometer
- Patented instantaneous, vibration-immune technology
- Concave optics, meter-class telescope optics, large imaging system alignment, moving parts
- VISIBLE-NIR-SWIR-LWIR
AccuFiz Fizeau
- Fizeau interferometer with dynamic interferometry
- Flats, lenses, vacuum/environmental chambers
- VISIBLE-NIR-SWIR
NanoCam Optical Profiler
- Patented instantaneous, vibration-immune surface roughness profiler
- Optical polish and surface finish
- Angstrom-level resolution
4D InSpec Optical Surface Gauge
- Patented instantaneous 3D surface measurement
- Portable, shop floor measurements
- Measure features such as edge break, chamfers, and radii and defects such as pits, dents, and corrosion
- Measure down to 2 microns
- Handheld, workstation, or robot-mounted
4Di InSpec AMS
- Automated surface defect and feature inspection
- High-throughput, high-resolution
- Measure dozens of features and defects in minutes rather than days
4D SurfSpec Coating Gauge
- Coating assurance gauge
- < 15nm resolution
- Raw materials, e-coat, & painted surfaces
- Portable handheld or robot-mounted
References for Optical Testing
Why Choose 4D?
What’s New
4D Technology Accepts Multiple Orders for Instantaneous LWIR Optical Metrology Instruments
Custom long wave infrared (LWIR) interferometer for optical testing orders received.
High resolution AccuFiz® Fizeau Interferometer from 4D Technology
AccuFiz measuring large optics at NOAO. Photo courtesy of NOAO.High precision interferometer for optics and transmitted wavefront error has improved spatial resolution 4D Technology Corporation, a wholly owned subsidiary of Onto Innovation Inc., announces the release...
4D Technology Introduces the PhaseCam MWIR – Two Setups in One
PhaseCam MWIR’s mainframe, positioned to use a side-port beam expander accessory.4D Technology, a subsidiary of Onto Innovation, announces the PhaseCam MWIR, a new Twyman-Green interferometer product line. The PhaseCam MWIR is a dual-port, midwave infrared...
4D Technology ships the industry’s first on-axis dynamic interferometer with 600mm aperture
Caption: AccuFiz D interferometer’s 600 mm beam expander measures large, flat, optical surfaces.4D Technology® has combined precision and vibrational immune capability into a large aperture instrument4D Technology, a wholly owned subsidiary of Onto Innovation Inc.,...
