OSRAM WI41/G

Product for calibration of luminous intensity

The OSRAM WI41/G is still the most famous light source for calibration of luminous intensity. Due to its rectangular filament structure it offers perfect alignment features to properly center the lamp. Outer bulb geometry and the coating with its front window has been optimized for minimum straylight.

  • Plackian radiator for testing the calibration of photometers with Standard Illuminant A.
  • Luminous intensity standard with E27 base for setup on optical bench
  • DC operation for reducued measurement uncertainty
  • Optional certifcate stating correlated colour temperature

Since the introduction of LEDs the production of incandescent lamps has been strongly reduced. Please check availability with LMT.