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Re: Stereomatic 500


Jamie Drouin writes:

> I have only used the Stereomatic 500 once, but noticed that even short
> durations of exposure the VM chips warped under the heat produced.  They
> returned to a normal state after a few hours, but it made me wonder if
> something can be added to this projector to absorb the heat.

I think the usual way of doing this is with a dichroic filter that passes the
visible light but absorbs the infrared.  Edmund Scientific sells them, and I
think they're listed in the Edmund catalog as "heat absorbing glass".

						Martin Schub


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