From: Robin Hollands <R.Hollands@sheffield.ac.uk>
Subject: Re: TECH: LCD Glasses
Date: Thu, 09 May 1996 12:45:01 +0100
Message-ID: <3191DABD.2C64@shef.ac.uk>
Organization: Automatic Control & Systems Engineering, University of Sheffield 


> I was wondering if anyone knows the
> specs to any of the glasses so that I could figure out how to control
> the shutters directly.  Any info would be appreciated.

You may be better off simply buying some LCD shutters. Edmund
Scientific in the US (1-609-573-6250) (techsup@edsci.com) offer some
LCD shutters which you can interface yourself. For smaller shutter
glasses, try Images Company in New York. Alternatively, if you can
track down an old pair of SEGA shutter glasses, details of interface
circuits can be found in in Linda Jacobson's book "Garage Virtual
Reality" and Joe Gradecki's "Virtual Reality Construction Kit", along
with many places on the Net.

The SimulEyes I tested before are connected to the interface box via
single stereo jack. I suspect that two of the channel carry a simple
on/off signal to the glasses, and so you should be able to connect
them directly to your square wave generator. Glasses are available
without the interface box. Try contacting Stereographics for interface
specs.

Cheers,

Robin