Xref: utzoo comp.sys.mac:25037 alt.cyberpunk:1328
Path: utzoo!attcan!uunet!yale!wald-david
From: wald-david@CS.YALE.EDU (david wald)
Newsgroups: comp.sys.mac,alt.cyberpunk
Subject: Re: 3D display (Was: replacing the desktop metaphor)
Message-ID: <47366@yale-celray.yale.UUCP>
Date: 12 Jan 89 16:41:17 GMT
References: <18963@agate.BERKELEY.EDU> <9076@cit-vax.Caltech.Edu>
Sender: root@yale.UUCP
Reply-To: wald-david@CS.YALE.EDU (david wald)
Organization: Yale University Computer Science Dept, New Haven CT  06520-2158
Lines: 29

In article <9076@cit-vax.Caltech.Edu> wetter@cit-vax.Caltech.Edu (Pierce T. Wetter) writes:
>> A year ago, at MacWorld Expo SF, E-Machines was demonstrating an
>> experimental 3D monitor for the Mac II along these lines.  The glasses
>> were of polarizing plastic, and were similar to light sunglasses when
>> looking at anything but the screen.  The screen proper was behind an
>-> LCD layer, which changed its polarization with each refresh.  The
>-> screen was extra bright to get around the light loss through the
>-> polarizer.
>
>-> The video card alternated between two images according to one of the
>-> color bits, although they were planning a version which had two image
>-> buffers.
>
>    You can actually buy this for home. The Sega video game system has a pair
>of the LCD glasses, and a series of 3D games. Even if you don't have, a sega
>you could always buy them and use them on your own mac.

In the system described by the original poster, the LCD system was not
in the glasses, but in the screen.  Rather than alternately blocking
left eye-right eye images, as I expect the Sega glasses do, the LCD
layer on the screen alternately changes its polarization, so that
ordinary 3D-movie style lenses will pick out two separate images.


============================================================================
David Wald                                              wald-david@yale.UUCP
waldave@yalevm.bitnet                                 wald-david@cs.yale.edu
"A monk, a clone and a ferengi decide to go bowling together..."
============================================================================