Ben Birdsey wrote:
> Being one of those physicists, I can tell you that an ordinary
> spherical glass lens lens *will not* actually produce a parallel beam.
> Spherical lenses are actually just an approximation. This might
> surprise you, but it's true.
Theoretically there should be some sort of lens that makes parallel beams. But
my guess is it is not made of intersected spheres...
--
David Fontaine <dav### [at] faricy net> ICQ 55354965
My raytracing gallery: http://davidf.faricy.net/
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