Re: re: fiber pinhole

I think that the way it works is that a light ray will exit at the same
axial angle that it entered, but the radial angle may change. This will
probably cause some loss of sharpness (not an unxpected effect
in pinhole work!) If the effect were totally random, fibers would
not be able to transmit an image even with a lens system. Since
they clearly can, I believe that the image transmitted by a single
fiber is coherent enough to form a pinhole style image...

Mike

"Richard M. Koolish" wrote:

> I don't think you can guarantee that the angle that a light ray enters a fiber
> is the angle at which it leaves the fiber, since that would mean an even number
> of reflections down the fiber. It there were an odd number of reflections, it
> would exit on the other side of the axis of the fiber. I think that rays
> entering at different angles would have a different number of reflections.
> Imagine two parallel mirrors and a ray bouncing between them from one end to
> the other. Since we are installing some fiber cables here at work, I'm trying
> to find some scraps.
>
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Received on Thu Apr 12 02:50:03 2001