Radiant Intensity Measurements
Directional radiant power is known as radiant intensity and is measured in watts per steradian (W/sr). Radiant intensity is often used to determine the efficiency of lensed sources such as automotive headlights and warning beacons which emit a parallel beam. Detectors with a defined field of view at a fixed distance and satisfying point source conditions are used to measure intensity.
More information about radiant intensity measurements can be found under:
Products section: Radiant Intensity Detectors
Possible Optometer: P-9710
Tutorials: click Basic Radiometric Quantities or Measurement of Radiant intensity
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Light Detectors (English)
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