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ULS300 Variable, Constant Colour Temperature Luminance Source

The ULS300 is designed for applications requiring a variable, yet Constant Colour Temperature (CCT), luminance source. Comprising a stable 250W quartz tungsten halogen lamp (QTH), light is transported to a 300mm diameter integrating sphere via an eight branch fibre for homogeneous illumination.

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Continuously variable from <30 cd m-2 to 14500 cd m-2 the ULS300 output is highly-uniform over the 100mm diameter aperture, ±0.1% independent of luminance setting. The CCT is nominally 3100K with less than ±20K variation over full luminance range.

Micrometer adjustable bi-lateral slits situated between the lamp and the fibres permit for high-accuracy light level adjustment over 50μm to 10mm.

Core benefits

  • Supreme uniformity and high stability across a wide range
  • Delivers continuously variable luminance
  • Measure with confidence, calibration performed with respect to Physikalisch-Technische Bundesanstalt (PTB, Germany)
  • Exceptional uniformity ±0.05% over 100mm diameter aperture, independent of luminance setting

Features

  • 40mm port aperture 2mm diameter measurement area
  • The sphere has a diameter of 100mm, with a 50mm port reducer used to increase the radiance.
  • Luminance continuously variable from <30 cd m-2to 14500 cd m-2
  • CCT 3100K ±20K variation over full luminance range
  • Features 250W quartz halogen (QTH) lamp
  • Light transported via an 8-branch fibre for homogenous illumination
  • Micrometer adjustable bi-lateral slits to vary the light level over 50μm to 10mm
  • Windows control software (BenWin+) provides full automation via USB 2.0

Applications

  • CCD and CMOS device uniformity calibration

 

LuminanceContinuously variable from <30 cd m-2 to 14500 cd m-2
Uniformity0.05% over 100mm diameter aperture, independent of luminance setting
CCT3100K ±20K variation over full luminance range
Options- Monitor detector with readout
- SMA (or other) ports for coupling to spectroradiometer
- Software control of luminance
- Port reducers

 

 

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