The OL Series 426 is a low light level calibration standard designed for accurately calibrating very sensitive instrumentation at moderate to extremely low light levels. The OL 426 consists of an optics head and a separate power supply.  The integrating spheres are available in diameters of 4, 6, 8, 12, and 18 inches with exit (radiating) ports of 1, 1½, 2, 3, and 6 inches, respectively.  Calibration options include luminance, color temperature, and spectral radiance.

 

Luminace/ radiance imaging, sensor calibration

 

350 - 2500 nm

 

W/cm²str, fL, fc

 

Various calibration options available

 

 

Revision 1.5

 

n/a