[Radiance-general] Calculating luminance of surface

[Florian Wochele]

Dear Sir or Madam,

We are working on our master thesis at Lund University about Glare from 
reflections on PV panels. To evaluate whether glare occurs or not, we 
need the luminance of the reflection on the surface the PV panel 
reflects light on. However we only get the illuminance of the sun (light 
source). How can we translate the illuminance from the sun to the 
luminance of the surface? There has to be a way since we can get the 
luminance via simulations, however we are interested in a way to 
calculate the luminance. We also have to take into account that PV 
panels are neither perfectly specular nor perfectly diffuse.

Best regards,

Erik Hjorth and Florian Wochele

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