I am curious if it is possible to use pov to design optical systems such as
light tubes, parabolic trough concentrators etc. e.g. for alternative energy
systems.
Can I either obtain light rays (paths of photons bouncing off mirrors etc.) or
output final object illumination values into a colormap or grayscale where
intensity is prop. to color ...perhaps this happens as default behavior?  I
would need to somehow obtain the relation between color and [insolation or
watts/m^2].  Anyone done any optical system design with pov? is there another
opensource that does it?

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