Harold M Hallikainen wrote:

>         Severely off topic, but I wanted to tap this group of experts...  I have
> a client who is trying to send light from an incandescent lamp (about
> 250W) down a "light pipe." The light pipe appears to be like a fiber
> optic pipe, but is a fairly large diameter and is, I believe, fluid
> filled.
>         Attempts thus far have been based on using a lamp with a built in
> reflector (a projector lamp) and putting lenses in front of it. I have a
> feeling that a lot of light is still missing the pipe.
>         Is anyone aware of a "light capturer" that captures light from a source
> and sends it down a light pipe?

The problem is that the light pipe, (Lucite) only accepts light from a limited set
of angles.
You need to collimate the light to get it to enter the light pipe.
There are compound lenses that can do this somewhat.
There is a limit to how much of the total light (from an isotropic source)
you can capture and collimate.

>
>
> Harold
>
> FCC Rules Online at http://hallikainen.com/FccRules
> Lighting control for theatre and television at http://www.dovesystems.com
>
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