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Warp nous apporta ses lumieres en ce 24/10/2006 16:53:
> Arnero <nomail@nomail> wrote:
>> Is it possible to use photon mapping to simulate optical pumping of the
>> gain medium
> You could try to give the object (which the photons are passing through)
> a color higher than 1, but I have never tested whether that works in
> practice.
I have and it work. It was a prism with rgbt 2, it effectively multiplied the
light by 16!
>> Is it possible to use a fine representation of the spectrum for better
>> simulation of chromatic errors in lenses, or for simulation of a
>> spectrometer
> You can fake the look of chromatic dispersion by using the 'dispersion'
> feature in POV-Ray (see the documentation), but it's probably not even
> close to the physically correct dispersion of real lenses.
Ok if you want a continuous spectrum.
>> Is it possible to use PovRay as a design tool for lens systems (or Beamer
>> optics) and if not why not?
> Only if you are not going to simulate chromatic aberration. If you need
> to simulate that, then I don't think POV-Ray can do a physically correct
> job in that field.
It's usualy "close enough", you need the correct dispersion for the material you
want. You can increase the dispersion_samples to get smoother results.
The real problem is that you can't simulate birefringense.
> (Ok, it may be possible to approximate reality by using trickery,
> perhaps by using several light sources in the same place, each colored
> differently and each in a light_group with a copy of the object otherwise
> identical but with different IORs. However, I have never tried this kind
> of thing, so I can't say for sure.)
>> Have you integrated FreeSnell to simulate multilayer optics?
> Some kind of frensell reflection is supported in POV-Ray, but once again
> I can't assure how physically correct it is.
--
Alain
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Drive A: not responding.. .Formating C: instead
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