Re: TECH-3D digest 189

[T3D <vidi@xxxxxxxxxxxxx>]

Peter Abrahams writes:
> I believe that more complete extinction
> could be achieved with a sandwiched polaroid.

   Dichroic Sheet Polarizers have an Extinction ratio
of 10,000:1 for White light!  It would seem to me though,
even if you were to use a set of these on the output of the 
projector lenses and had matching sets for your "glasses"
you would still see some ghosting because of the screen
buggering up the polarization on the way back to you.  Any
comments?  One of these polarizers cost $64.00 for a 1"
clear aperture size.


John Vala


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End of TECH-3D Digest 193
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