CL2_RI Spectral Radiant Intensity Standard (300-3000nm)

  • CL2_RI radiant intensity reference standard 300-3000nm

Calibrated in our dedicated laboratory with respect to standards calibrated by the Physicalish Technische Bundesanstalt (PTB, Germany), a range of calibration intervals within 300-2500nm is on offer, with a De Vos extrapolation of calibration data provided to 3000nm.

Fitted with a grit-blasted 250W QTH lamp, stable lamp operation may be ensured in operating the lamp with the 610 precision constant current DC power supply. A calibration to obtain CIE illuminant A operation (2856K) can be provided for the calibration of luminous intensity meters.

A mounting bracket provides a universal interface with all optical tables and mounting system.

Core benefits


  • Open-frame spectral radiant intensity calibration standard (
  • Spectral radiant intensity calibration range 300-2500nm with De Vos extrapolation to 3000nm
  • Reliable QTH lamp
  • Designed for optimal performance when powered by the 610 contact current power supply
  • Calibration performed with respect to the Physicalish Technische Bundesanstalt (PTB, Germany)

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