Re: laser projector...

From: Paul Kahler <phkahler_at_Oakland.edu>
Date: Wed Jan 14 1998 - 09:28:04 EST

> I have always wondered that If you could run Tempest on a RGB laser
> projector would the colors mix correctly? even if the convergence was
> perfect... I have been to a bunch of the laser shows, but I dont
> remember ever seeing other colors than RGB and yellow. (most of the show
> projectors split the beam into these 4 colors). I would assume the
> colors wont mix to make colors such as purple, cyan, etc. seeing as how
> they had a separate beam for yellow..

I recall reading that they can take a "white" laser and pass it through
some type of crystal which can act as a band-stop filter. You apply an
RF signal to vary the intensity of the stopped color. Anyway, they sell
complete RGB systems so you need not worry how it works. Since there is
only 1 beam, there is no convergence problem :-) I'll try to find the URL
for the place I was looking. Frank P. and I had discussed this but the
price was between $1000 and $10,000 depending what you do.

-- 
 ___   __   _   _  _
|   \ /  \ | | | || |       phkahler@oakland.edu     Engineer/Programmer
|  _/| || || |_| || |__     " What makes someone care so much?
|_|  |_||_| \___/ |____)      for things another man can just ignore. " -S.H.
Received on Wed Jan 14 06:29:07 1998

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