Midwave-Infrared Laser Unequal Path Interferometer

The IR LUPI (Laser Unequal Path Interferometer) operates at a wavelength of 3.39 micrometers and features an internal He-Ne IR laser as well as an integral collinear visible alignment laser. The IR LUPI is the ideal instrument for testing mid-wave infrared imaging systems of any size or complexity.

State of the Art Resolution and Accuracy

  • Includes a 640x512-pixel high-resolution cooled InSb camera.
  • Features Diffraction International’s DurangoTM fringe analysis software.
  • System accuracy specified as 0.008 λ RMS @ 3.39μm, with repeatability of 0.001 λ RMS (Static Fringe Analysis).

Designed to Maximize Your Productivity

  • Integrated aperture zoom, focus, and panning provide optimized viewing of the fringe pattern.
  • Optional objective lenses convert the output to a diverging beam for testing cameras, lenses, and other imaging systems.
  • An optional Translation Base provides extended 3-axis positioning travel offering unprecedented positioning flexibility.
  • Internal reference mirror features selectable effective reflectivity values of 90%, 40%, and 4% to match the optics under test, available at the turn of a knob.