light_source {} with cylinder type light sounds like a possibility alright.
Vary the tightness, falloff, and radius as needed.
I haven't tried it yet, but if the idea is to create an actual "area" of light 
at the source then this might be the solution.

Message <362ff07d.0@news.povray.org>, Peter Popov  typed...
>Multiple spotlights placed in a circle *might* work, but I think that, if
>you only want to see the beam and not any shadows in it, you can use a very
>distant cylindrical light that points at the lighthouse.

I take it this means orient the cylinder light along the light beam axis. 
"distant"?, I don't understand that, because it has no distance along the axis 
unless fade_distance and fade_power is used, so putting it at the beam origin 
and with point_at away from there (what else?) then the light distance will 
fade as it should.

>
>Peter
>

-- 
 omniVERSE: beyond the universe
  http://members.aol.com/inversez/POVring.html
=Bob

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