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From: jr@bbncc5.UUCP (John Robinson)
Newsgroups: net.periphs,net.research,net.graphics
Subject: Re: volumetric displays
Message-ID: <394@bbncc5.UUCP>
Date: Tue, 24-Sep-85 13:47:42 EDT
Article-I.D.: bbncc5.394
Posted: Tue Sep 24 13:47:42 1985
Date-Received: Sat, 28-Sep-85 06:46:30 EDT
References: <2@unc.unc.UUCP> <486@olivee.UUCP>
Reply-To: jr@bbncc5.UUCP (John Robinson)
Distribution: net
Organization: Bolt Beranek and Newman, Cambridge, MA
Lines: 11
Xref: watmath net.periphs:868 net.research:232 net.graphics:1143
Summary: 3-D display using a vibrating mirror

BBN desgined a display system that used a vibrating mirror to cause an
oscilloscope face to trace out a volume in the virtual image behind the mirror
(got that?  hope so).  By timing the images on the scope, you could place them
at a particular depth.  The mirror was excited by a regular ole' loudspeaker at
30 hz (maybe it was 60); it was counterweighted so that its vibration was
parabolic rather than spherical.  Eventually, Genisco bought the technology and
reengineered the package to sell as their own.  I don't believe they have had
much luck selling it.  I thought the images it produced were quite striking.  I
could chase down references if anyone's interested.

/jr