TriDelta Prism Beamsplitter

["John O. Merritt" <JOMERRITT@xxxxxxxxxxx>]

Yes, there is a viewer for the Tri-Delta Prism Stereo format,
with an ingenious optical design, very compact and elegant.  It
takes the two head-to-head halves of the 35mm slide and rotates
each 90 degrees to  restore them to proper orientation.  Its ground
glass diffuser, and the slide, are on the top of the viewer, so you
don't have to tilt your head up to get light from overhead light fixtures.

The beam splitter itself can be used on a slide projector lens to
un-rotate and project onto a silver screen through polarizers.  

Try calling Olden camera in NYC, or other such used camera vendors.


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