Re: PHOTO-3D digest 1358

[P3D Jim Crowell <crowell@xxxxxxxxxxxxxxxxx>]

At 9:18 AM 5/31/96, P3D Ronald J Beck 840196 wrote:
>
>What about using two overheads with polarizing filters
>projected on a silver screen?  Would this look better?  Worse?
>Anybody done any experimenting?
>


I'd think it would be tricky to keep the two transparencies
aligned; they tend to slide around quite easily.  What about
printing the two images side-by-side on a single transparency?
When projecting you could cover each half of the image with a
sandwich consisting of a polaroid filter & a lenticular
(fresnel) prism (to shift the image towards the center of the
screen).  In other words, over the left half you'd have a
polaroid oriented at +45 degrees & a base-left prism, & on the
right side you'd have a polaroid at -45 degrees & a base-right
prism.  You'd need pretty strong prisms, though.

-Jim C.


------------------------------------------------
Jim Crowell
School of Optometry
360 Minor Hall
University of California
Berkeley, CA 94720-2020
(510) 642-7679
jim@xxxxxxxxxxxxxxxxx
http://john.berkeley.edu/IndividualPages/jim.html



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