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Cyhist Mar 08 1997 A
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Date: Sat, 8 Mar 1997 13:53:50 -0800
Reply-To: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> Sender: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> From: Bob Bickford <rab@WELL.COM>
Subject: Re: 3-D display -- NOT!
X-cc: rab@smtp.well.com, btanen@NETSPACE.ORG
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Community Memory: Discussion List on the History of Cyberspace ______________________________________________________________________
Ben Tanen wrote:
>Hi folks. I am interested in the earliest mention anyone can find of a three-dimensional display: anything involving an image-producing device for each eye with some way of making them combine using parallax, polarized light, etc. would do.
This is not a "3-D display". What you've described is a *stereoscopic* display system. There is a _huge_ difference. A true 3-D display would have the characteristic that you could move your head and/or walk around it to see more information. Even those sterescopic display systems that react to head movements and change the picture are nearly worthless to that five to eight percent of the sighted population that does not posess sterescopic vision. (Although some of the helmet displays remain fairly convincing even if you're only using one eye.) A true 3-D display system would probably involve some kind of solid hologram, and as far as I'm aware nobody has yet built one.
As for sterescopic displays, I think it likely that the earliest ones would be those developed by NASA for the VR (flight simulator) projects they were working on way back when (anybody have dates?). One film I saw showed a fellow wearing a helmet that was obviously very very heavy, as it was mounted on a frame that was supported from the ceiling!
Hope this helps. Terminology is important!
--
Bob Bickford rab@well.com
WebMaster, Ballot Access News official web home http://www.well.com/conf/liberty/ban/index.html
______________________________________________________________________
Reply-To: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> Sender: "CYHIST Community Memory: Discussion list on the History of
Cyberspace" <CYHIST@MAELSTROM.STJOHNS.EDU> From: Bob Bickford <rab@WELL.COM>
Subject: Re: 3-D display -- NOT!
X-cc: rab@smtp.well.com, btanen@NETSPACE.ORG
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
______________________________________________________________________
Community Memory: Discussion List on the History of Cyberspace ______________________________________________________________________
Ben Tanen wrote:
>Hi folks. I am interested in the earliest mention anyone can find of a three-dimensional display: anything involving an image-producing device for each eye with some way of making them combine using parallax, polarized light, etc. would do.
This is not a "3-D display". What you've described is a *stereoscopic* display system. There is a _huge_ difference. A true 3-D display would have the characteristic that you could move your head and/or walk around it to see more information. Even those sterescopic display systems that react to head movements and change the picture are nearly worthless to that five to eight percent of the sighted population that does not posess sterescopic vision. (Although some of the helmet displays remain fairly convincing even if you're only using one eye.) A true 3-D display system would probably involve some kind of solid hologram, and as far as I'm aware nobody has yet built one.
As for sterescopic displays, I think it likely that the earliest ones would be those developed by NASA for the VR (flight simulator) projects they were working on way back when (anybody have dates?). One film I saw showed a fellow wearing a helmet that was obviously very very heavy, as it was mounted on a frame that was supported from the ceiling!
Hope this helps. Terminology is important!
--
Bob Bickford rab@well.com
WebMaster, Ballot Access News official web home http://www.well.com/conf/liberty/ban/index.html
______________________________________________________________________
