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AccuFiz Infrared

Compact, high value Fizeau interferometers for infrared IR measurements.

High performance, quality and value, for accurate, repeatable measurement of surface shape and transmitted wavefront quality. 

4D Technology AccuFiz SWIR Laser Interferometer

Measure IR optics and systems at 1.053–1.55 micron wavelengths

AccuFiz infrared interferometers provide accurate measurement of IR optics and precision surfaces. AccuFiz infrared laser interferometers are ideal for measuring concave, convex and afocal IR components, as well as infrared telescopes and lens systems. Their ability to capture high slopes makes it possible to measure aspherical optics without the need for a holographic element.

AccuFiz IR interferometers are loaded with standard features, such as a touch-screen remote and fully motorized controls. Optional dynamic measurement mode lets you measure despite vibration and air turbulence, without an air table. Only AccuFiz includes Smart Zoom™ to ensure accurate lateral resolution over the entire 1X–10X zoom range. Diffraction-limited imaging provides unparalleled resolution, particularly at mid-spatial frequencies, to measure polishing artifacts that other interferometers miss.

4D Technology AccuFiz Fizeau Laser Interferometer

AccuFiz NIR

Operating at
1.053 or 1.064 μm

accufiz swir fizeau interferometer

AccuFiz SWIR

Operating at
1.55 µm

AccuFiz IR Specs

Configuration Fizeau interferometers
Acquisition Temporal phase shifting, optional vibration-immune dynamic
Wavelength NIR: 1.053, 1.064 µm
SWIR: 1.55 µm
Aperture NIR: 100 mm (4 in), 150  mm (6 in)
SWIR: 100 mm (4 in)
Camera NIR: 4MP, 12-bit (optional 2400 x 2400 at 1.064 µm)
SWIR: 512 x 512
Controls Remote control focus, zoom
Zoom NIR: Continuous 1–10X  with pan;
SWIR: Continuous 1–10X  with pan;
Software 4Sight™ Focus included
Size NIR: 100 mm aperture:  51.4 cm (20.2 in) long; 150 mm aperture: 76.2 cm (30 in) long
SWIR: 51.4 cm (20.2 in) long
Reflectivities 1 – 100%
Fizeau Interferometer mounts and optics

Full range of options and accessories

Designed for flexibility, the AccuFiz family includes a range of laser sources, aperture sizes, mounting components and accessories.

Fizeau laser interferometer - alignment

Simplified Alignment

Speed setup with the Visible alignment beam and dual spot camera based alignment aid

Fizeaus and optical production

AccuFiz IR Fizeaus are well suited to optics manufacturing.

  • Qualify shape and mid-spatial frequencies
  • Measure flats, spheres, cubes and mirrors
  • Wavefront transmission quality measurements
  • Fast and precise
  • Use in Aerospace, Semiconductor and Optics industries

Added Technical Resources


Setting the Wedge Factor Tech Note

The Wedge Factor scales results to account for the geometry of an optical test setup. This tech note explains how to set the parameter for measuring wavefront error and surface height in common configurations.

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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