From: jim@baroque.Stanford.EDU (James Helman)
Subject: Re: INFO: Virtual Reality Group (VRG)
Date: 10 Nov 92 00:55:52
Message-ID: <JIM.92Nov10005552@baroque.Stanford.EDU>
Organization: Stanford University


In article <1992Nov7.070350.15211@u.washington.edu> george@northwest.Berkeley.EDU writes:

   I have not had a chance to call VRG, but no HMDs currently
   have 1280X1024 resoltion especially in a 1" CRT.  Correct
   me if I am wrong.

Ditch the shadow mask and high resolution is merely a matter
of focus and control of the electron beam, as both Kaiser and
Tektronix demonstrated last week at the I/ITSEC visual
simulation conference.

Kaiser Electro Optics' new 1024x1280 monochrome HMD is one of
the best I've seen.  Compared with VRG's, I found Kaiser's
lighter, easier to align, and having better overlap and
optical design.  In addition, it uses half-silvered optics
which image at infinity, so removing the cowling allows
see-through superposition of computer graphics on the real
world.  (Kaiser: Calsbad, CA, 619.438.9255).

Tektronix was at the show demonstrating their field sequential
color monitors in 1", 7" and 9" sizes (640x480).  These use a
monochrome montior to sequentially display red, green and
blue.  The 1" needs some work, but the color saturation of
these monitors leaves shadow mask tubes in a gray cloud of
dust.  The clarity and sharpness are also much higher than on
shadow mask tubes of comparable resolution.  No more dots of
RGB triads.  Simply beautiful.  Obviously, the 1" version will
find effective use in HMDs.

-jim

Jim Helman					SGI:  (415) 390-1151
jimh@surreal.asd.sgi.com			FAX:  (415) 591-8165
jim@KAOS.stanford.edu

"The power of the computer is locked behind a door with no knob."
							-B. Laurel