BIRD - Universal Electro-Optic Test Bench for IR Detectors

Calibration and test of IRFPA detectors:

  • Non-uniformity correction,
  • Dynamic range, linearity,
  • Noise tests: fixed pattern noise, temporal noise, NETD responsivity, detectivity, 3D-noise, 2D-detectivity,
  • Bad pixel localization,
  • Crosstalk, MTF,
  • Spectral response.

BIRD210 brochure 

Designed for comprehensive IRFPA detector testing

BIRD detector measurement system

The BIRD210 bench includes an electronic cabinet equipped with a set of ultra-low noise electronics including a bias voltage unit, a clock signal generator, and a high-frequency analog to digital converter. An optical bench illuminates the detector under test with accurate and calibrated optical signals: NUC and bad pixel tests, an adjustable IR source with a high spectral resolution for spectral response measurements, a low-temperature uniform and highly stabilized IR reference source for noise measurements, and an aberration-free pinhole or thin slit source for MTF and crosstalk tests.

The BIRD software has the following features:

  • Setting of parameters for testing functions such as temperatures for noise measurement and NUC, criteria for bad pixel localization (up to 6 criteria), spectral range for spectral response analysis, etc.,
  • Acquisition and processing of the detector’s video signal, including the exclusive noise and responsivity optimization as a function of the bias voltage values,
  • User–friendly interface for clock signal design, pixel remapping, bias voltage settings and A/D parameter definition and application of these parameters and signals to the detector,
  • Automatic control of the optomechanical elements of the optical bench (translation stages, blackbodies, monochromator) depending on the selected functions and the corresponding settings,
  • Display and recording of the complete tests results.

Multi-configuration test solution for any type of detector

Thanks to an optical table equipped with a mechanical system for the selection of sources, multi-configuration is possible. The basic equipment for noise tests configuration with BIRD210 includes:

  • Analog to digital converter,
  • Clock signals generator,
  • Bias voltage unit,
  • DCN1000H4 low-temperature blackbody,
  • Computer with acquisition board and BIRD software.

 

MTF/crosstalk configuration

  • RCN1250N1 high-temperature cavity blackbody,
  • Set of 8 thin slits and pinholes,
  • Aberration-free F/1.5 Cassegrain optics and/or F/1 LWIR optics,
  • Three motorized translation stages with 1 μm resolution assembly for accurate selection of pixel.

Spectral response configuration

  • RCN1250N1 high-temperature cavity blackbody,
  • Spectral response calibration set including chopper, pyroelectric detector, and a lock-in amplifier,
  • Monochromator equipped with gratings and filters to cover the 1.1 μm to 12 μm spectral range (additional gratings and filters in option to cover the 0.4 μm to 18 μm spectral range). Typical spectral resolution: 1%.

Visible detectors configuration

  • Visible CMOS detectors can be tested with the addition of visible source ISV250 to the above configurations.
BIRD software screenshots

See also...