High resolution dynamic Twyman-Green laser interferometer

Flexible, vibration-insensitive, 4MP PhaseCam 6100.

A high resolution 4MP sensor in an easy-to-position, fiber-coupled measurement head, plus motorized controls, the incredibly small PhaseCam 6100 is ideal for long path measurements, remote mounting in measurement towers or pressure vessels, and other challenging test setups.

PhaseCam 6100 Description

The PhaseCam® 6100 is a compact and lightweight dynamic laser interferometer. Vibration-immune and only 13 inches in length, the PhaseCam 6100 features a high resolution 4MP imaging sensor and motorized controls, making it ideal for use in applications such as measuring large telescope optics, long path measurements, remote mounting in measurement towers or pressure vessels, and noisy or vibration-rich environments.

PhaseCam 6100 systems are available with a 633 nm wavelength or 1550 nm short-wave infrared laser, to match your measurements to your functional wavelength.

The PhaseCam 6100 dynamic laser interferometer incorporates a high-speed optical phase sensor that makes wavefront measurements in as little as 30 microseconds—over 5000 times faster than a phase shifting interferometer. Such short acquisition time means the PhaseCam can be used in the noisiest environments, without vibration isolation or turbulence control. Applications include measurement of large, focal optical systems such as concave telescope mirrors and lens systems, as well as deformable mirrors and adaptive optics.

Numerous accessories and options are available including a 5-axis mount, low-reflectivity diverging lenses and beam expanders. A high-power 633nm external source for ESPI (Electronic Speckle Pattern Interferometry) is also available.

Demonstration of Measuring Large Optics Easily

This 4 minute video shows how easy it is to measure large optics using dynamic interferometers that are light, small and easy to align.

Vibration insensitive

30 microsecond data acquisition time

4 MP Sensor

High resolution camera ensures maximum spatial data

Compact and Lightweight

Designed with performance and remote measurement in mind. Small, lightweight, easy to mount and reposition quickly.

Data analysis and visualization

Highly developed data analysis software and controlling computer provided

What to expect

Operating at either 633 nm, 1550 nm SWIR, (and some custom wavelengths,) PhaseCam is a small aperture surface measuring and wavefront transmission measuring interferometer.

With super-fast acquisition times, it’s ideal for long optical-path measurement of large focal systems, as well as deformable mirrors and adaptive optics. It’s highly popular in measuring concave telescopes mirrors and lens systems. It’s also great for testing small aperture afocal components like flat mirrors and collimators.

  • Meter-class telescopes
  • Quality verification of optical components
  • Vacuum and environmental chamber tests
  • Production floor quality control

4D supplies a turnkey interferometric system:

  1. Interferometer
  2. Advanced software for taking measurements and analyzing the results
  3. Complete computer system
  4. Connecting cables and power supplies.

Accessories include:

  • Multi-axis mounting and aligning the mainframe
  • Optical mounts
  • Reference optics
  • Diverging lenses for varying the beam shape
  • High-power 633nm source for Electronic Speckle Pattern Interferometry (ESPI)

4Sight wavefront analysis software features a user-friendly interface with unmatched simplicity, analysis features and graphical displays. 

The measurement functions assist in alignment and measurement execution, and set-up of masking, reference subtraction, terms removal, and similar matters. 

Data analysis functions such as Zernike, Seidel, geometric and diffraction analysis are easy to perform. 

Share your data across many analysis applications, such as MatLab and CodeV. 


analysis software

PhaseCam and telescope optics

Check out our application page on telescope optics.

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

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