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Cosine irradiance (Ed or Eu) collector

Monday, 30 August 2010 19:39 Rocky
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Diagram of a typical cosine collectorDiagram of a typical cosine collectorUsed for measuring upwelling or downwelling sunlight, a properly designed cosine collector, will report irradiances that are proportional to the cosine of the angle of incidence. This diagram is a side view of a cosine collector, showing the relationship between the collector, occluding rings, and photodetectors. For designs using multiple photodetectors such as this, wavelength detuning as the view angle of the photodetector moves off-axis must be controlled.

Last Updated on Friday, 01 October 2010 10:53