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Old 2nd Jan 2007, 12:21 pm   #11
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Join Date: Feb 2005
Location: Sedgeberrow, Worcestershire. UK.
Posts: 1,658
Default Re: Colour mixing in mechanical television

Originally Posted by Steve_McVoy View Post
and after thinking about it I have concluded that the recessed LED approach will require a ground glass (or some other object) at the slit to work. The question is which approach will provide the most illumination.
Yes, I must think more about this. Perhaps the recessed LED method with parallel plates would produce a light field which was bright in the centre then bright again at the edges where the reflections from the parallel plates kicked in, but somewhat lacking in between? If this were so, it should be possible to overcome this by bending the plates (as they approach the LED) into a parabolic curve. No lossy ground glass needed then...

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