[Radiance-general] trans or glass material, rectangular luminous opening problem

[Christian Fusenig]

Hi @all,

1. question:

I have circular plexiglass disc or more a  flat cylinder  and  on top of 
one side there is a blue LEE Color filter attached. I have the spectrum 
of the filter and calculated the RGB color values. Shall i make a normal 
glass cylinder and on top a disc of glass with the RGB values multiplied 
with the transmittance of the filter? Or would you suggest the trans 
material ?

2. I have .ies data of a rectangular flood light and convert it into a 
radiance file. Although the resulting Polygon is glowing,   the light 
output  seems to come from the middle of the polygon and not from the 
whole area. Is this correct?

Thanks and regards,

Christian