IMAX theatres usually use LCS (liquid crystal shutter) glasses, not passive
polarization as Remco Poelstra describes on his web site. Passive
polarization
for projection has been in wide spread use since the late 1930's when
Edwin Land developed a cost efficient method of making polarizing filters.
Hence the name "Polaroid" for his company which today makes instant
cameras and film.

Stereoscopic slides were very popular in the early 1950's. I have two
3D projectors from the era that I often use for 3D slide shows. I've
been using POV-Ray to make stereo images and have been putting
them on slides for 3D projection since 1994.

All this history and technique is easy to find on the web.
Here is a good place to start:
   http://www.stereoview.org/
   http://www.stereoview.org/3dlinks.html
Also, check out my web site of 3D photos from Burning Man:
   http://www.3dculture.com/bm3d

Harolddd


"Jong" <jjk### [at] mmewhaackr> wrote in message
news:3da6a62a$1@news.povray.org...
> Dear Remco,
>
>  I'd like to visit your site at the beryllium.net for polarizing filter
use.
> I could not connect to the site you gave. I'll appreciate it if you could
> guide me to your site(or your new site).
>
> Jong
> "Remco Poelstra" <rjp### [at] homenl> wrote in message
> news:3A7### [at] homenl...
> > Hi,
> >
> > I've made a website about viewing 3D images with polarizing filters.
> > www.beryllium.net/~remco/polaroid/
> > It's based on an experiment I'm doing for physics together with a
friend.
> > All images will be done in povray, but only the simple images (to
> > explain how it works) are done by me. For the cool images did I recieve
> > some sourcecode from TonyB and Tor Olav Kristenen.
> > The website isn't completed yet, since the experiment just started.
> >
> > I hope some might get inspired and try this at home!
> >
> > Please tell me whether you like the site or not and so on.
> >
> > Remco Poelstra
> >
>
>

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