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P3D Re: 3d camera u.s. patent


  • From: "Greg Wageman" <gjw@xxxxxxxxxx>
  • Subject: P3D Re: 3d camera u.s. patent
  • Date: Thu, 22 Jan 1998 02:00:03 -0800


From: Sam Smith <3dhacker@xxxxxxxxxxxxx>


>I received his drawings last July, and I have to be honest in saying I
>haven't a clue how this thing works.
>
>Any comments from you Einsteins out there?


I ain't no Einstein. :-)  But on a quick read, it seems that the claim is that,
because the two light paths are nearly identical ("difference nearly nil" I
believe was the phrase used), constructive and destructive interference is
supposed to occur, resulting in recording something like a hologram, but from a
"single perspective".

I have no idea if the theory of the optical system described is sound, but just
from a practical standpoint, it seems that for this to occur, the physical
tolerances of the system would have to be precise to a fraction of a wavelength
of light, and that this is unlikely to be possible in the real world, since the
system described involves a length of fibre optics, pairs of doublet or triplet
lenses, an anamorphic lens, and plates of varying refractive indices, all of
whose tolerances would have to be precise to the extreme.

On the other hand, I could be completely wrong. :-)

     -Greg W. (gjw@xxxxxxxxxx)



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End of PHOTO-3D Digest 2533
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