4D Technology Corporation

4D Technology is a leader in innovative metrology products for measuring surface quality and surface defects on precision surfaces, as well as the surface and wavefront quality of optics. 4D’s patented Dynamic Interferometry^®technology enables 4D’s laser interferometry products to measure in difficult environments, where vibration, air turbulence or rapid motion have traditionally prevented accurate measurement. 

4D Technology has been a Nanometrics business unit since November, 2018.

New instruments in surprising situations

Using our unique and proprietary dynamic measurement techniques, our award-winning laser interferometer technology is used in to a wide variety of applications, including:

• factory-floor inspection
• telescope mirrors and systems
• biomedical research
• environmental sensing and imaging
• and much more

We collaborate with institutions and companies to create and manufacture accurate metrology for tough environments and difficult measurements.

Optical Components

• Flat (plano) optics
• Spherical optics
• Large optics
• Aspheric optics
• Infrared IR optics
• Lithography optics
• Prisms and corner cubes
• Space-based optics
• Transmitted wavefront
• Homogeneity
• Birefringence/stress
• In situ polishing metrology
• Roughness and finish

Optical Systems

• Telescope primary mirrors
• Telescope secondary mirrors
• Segmented mirrors
• Long path measurements
• Shop floor metrology
• Clean room metrology
• Cryo-vac and thermal chamber testing
• Adaptive optics

Substrates

• Glass substrates
• Semiconductor wafers

Dynamic Structures

• Adaptive optics
• MEMS (Micro-Electro-Mechanical Systems)
• Diffuse surfaces

Precision Surfaces

• Surface roughness
• Surface defects
• Machined components
• Corrosion

Sensing and Imaging

• Polarimetry
• Birefringence measurement
• 3D shape
• Remote sensing
• Machine vision
• Autonomous vehicle vision

Medical and Biological

• Opthalmic applications
• In vivo measurement

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