Select Page

Phasecam Twyman-green Laser interferometers

PhaseCam dynamic Twyman-Green laser interferometers provide high resolution measurements despite vibration and air turbulence. Dynamic Interferometry® enables PhaseCam laser interferometers to capture full wavefront measurements in as little as 30 microseconds—5000 times faster than conventional phase shifting interferometers. Compact and lightweight, PhaseCams make reconfiguring test setups simple and easy, without vibration isolation.

Twyman-Green laser interferometers offer several important advantages over more traditional Fizeau instruments:

  • Vibration-insensitive measurement enables use in challenging environments such as cryo-vac testing or over long measurement paths.
  • The design can be extremely compact, enabling use in tight spaces, or in difficult-to-access locations.
  • The on-axis design provides excellent accuracy, particularly when measuring spherical elements.
  • The ratio between the test and reference beams is adjustable without loss of power.

PhaseCam Comparison

4030 633 nm Small Highest Manual
6110 532  or 633 nm Very Small Highest Motorized
6010 633 nm Smallest Highest Motorized
NIR 1.064 μm Very small Highest Motorized
SWIR 1.55 μm Small High Motorized
MWIR 3.39 μm Medium High Motorized
Vacuum 633 nm Medium Highest Motorized
ESPI 633 nm Medium Highest Motorized

PhaseCam 4030 High Value Laser Interferometer

The PhaseCam 4030 features a 4MP high resolution camera, simple manual controls  and vibration immunity. Flexible and low cost for the lab or shop floor.

PhaseCam 6110 High Performance Twyman-Green Laser Interferometer

An easy-to-position, fiber-coupled measurement head and motorized controls, make the incredibly small PhaseCam 6110 ideal for long path measurements. Use it for remote mounting in measurement towers or pressure vessels, and other challenging test setups.

PhaseCam 6010 Compact Laser Interferometer

With a tiny, easy-to-position, fiber-coupled measurement head and motorized controls, the PhaseCam 6010 is ideal for on-machine metrology, remote mounting in measurement towers or pressure vessels, and other challenging environments. PhaseCam 6010 is a Twyman-Green interferometer.

PhaseCam NIR Laser Interferometers

Lightweight and vibration-insensitive for surface and wavefront measurements at near infrared (1.064 micron) wavelength.

PhaseCam SWIR Laser Interferometers

Compact, lightweight and vibration-insensitive for accurate surface and wavefront measurements at 1.55 micron wavelengths.

PhaseCam MWIR Laser Interferometers

Compact and lightweight for accurate surface and wavefront measurements at 3.39 micron infrared wavelength.

PhaseCam Vacuum-Compatible Laser Interferometer

Compact and fully motorized PhaseCam in a nickel-plated aluminum pressure chamber, for easy positioning in environmental/cryovac chambers.

4D Technology PhaseCam ESPI and source module

PhaseCam ESPI Interferometer

A high-power 532 nm external source adds Electronic Speckle Pattern Interferometry (ESPI) capability to the compact, versatile PhaseCam 6100.

Accessories for Twyman-Green Laser Interferometers

4D offers a comprehensive line of diverging lenses, mounts, reference optics and other accessories to ease optical setup, save time and help you make the most of your laser interferometer investment.

Get In Touch

(520) 294-5600


3280 E Hemisphere Loop, Ste 146
Tucson, AZ 85706


Office Hours (Arizona Time)

Mon: 8am - 5pm
Tue: 8am - 5pm
Wed: 8am - 5pm
Thur: 8am - 5pm
Fri: 8am - 5pm
Sat: Closed
Sun: Closed

Send A Message