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RE: Perhaps a cheaper HMD

From: Tony Havelka <>
Date: Fri, 07 Sep 2007 13:08:03 -0500

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 > Certainly QVGA, on which a simple clock face looks ragged, can only =
be
useful as a speedometer or heart rate monitor. As a video display it is
rated "suck".=20
=20
Oliver, being one of the Grandfathers of HMDs, you should remember a =
time
where QVGA was considered high res.  You were still making good products
with what would be considered "low res" today. What's changed other than =
the
availability of better, higher resolution displays?

> SVGA gives a good enough image and will likely be the one that Makes =
It
Big... if ever people integrate enough useful functions to make a HMD =
worth
wearing in the mass market.=20
> Say 40=B0 diagonal FOV:  any less feels like tunnel vision;  any more =
just
can't be eye-scanned without muscle strain... and the optics becomes
cost-impractical. =20
> That's why a million night vision goggles have 40=B0 FOV.=20
>
> Say the eye's resolution  limit at these modest light levels is about =
half
of the ultimate eye resolution... oh, about  2.4 arcsec.  =3D 1/1000 of =
40=B0.=20
>
>So there is no (zero, nada) value in ever putting better than a 600x800
display in a 40=B0 FOV HMD.=20
>
>For anything less than SVGA -- either scale down the FOV to tunnel =
vision,
or learn to love jaggies.=20
=20
You have it right - consumer acceptability is going to be about the =
optics
and not the resolution of the panel - we've reached the apex of panel
resolution.   New and innovative optics will give the industrial =
designers
something to work with to design an appealing product.  The panel really =
has
not much to do with the consumer acceptance of a product.  No panel can
compensate for bad optics - yet.
=20
-Tony
=20
=20

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<HTML><HEAD>
<META http-equiv=3DContent-Type content=3D"text/html; =
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<META content=3D"MSHTML 6.00.6000.16525" name=3DGENERATOR></HEAD>
<BODY>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000 =
FAMILY=3D"SANSSERIF"><FONT=20
face=3DArial><FONT size=3D2><SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff> > </FONT></SPAN>Certainly QVGA, on which a =
simple clock=20
face looks ragged, can only be useful as a speedometer or heart rate =
monitor. As=20
a video display it is rated "suck".<SPAN =
class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000 =
FAMILY=3D"SANSSERIF"><FONT=20
face=3DArial><FONT size=3D2><SPAN=20
class=3D500473417-07092007></SPAN></FONT></FONT></FONT> </DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000 =
FAMILY=3D"SANSSERIF"><FONT><FONT=20
face=3DArial><FONT size=3D2><SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff>Oliver, being one of the Grandfathers of HMDs, you =
should remember=20
a time where QVGA was considered high res.  You were still making =
good=20
products with what would be considered "low res" today. What's changed =
other=20
than the availability of better, higher resolution=20
displays?</FONT></SPAN><BR><BR><SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff>> </FONT></SPAN>SVGA gives a good enough image =
and will=20
likely be the one that Makes It Big... if ever people integrate enough =
useful=20
functions to make a HMD worth wearing in the mass market.<SPAN=20
class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT FAMILY=3D"SANSSERIF"><FONT><FONT =
face=3DArial><FONT=20
color=3D#0000ff size=3D2><SPAN=20
class=3D500473417-07092007>></SPAN></FONT></FONT></FONT></FONT><FONT=20
color=3D#000000 FAMILY=3D"SANSSERIF"><FONT><FONT><FONT =
face=3DArial><FONT size=3D2><SPAN=20
class=3D500473417-07092007><FONT color=3D#0000ff> </FONT></SPAN>Say =
40=B0=20
diagonal FOV:  any less feels like tunnel vision;  any more =
just can't=20
be eye-scanned without muscle strain... and the optics becomes=20
cost-impractical. <SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></FONT></=
DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT face=3DArial><FONT =
size=3D2><SPAN=20
class=3D500473417-07092007><FONT =
color=3D#0000ff>></FONT> </SPAN>That's why=20
a million night vision goggles have 40=B0 FOV.<SPAN =
class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></FONT></=
FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT face=3DArial><FONT =
size=3D2><SPAN=20
class=3D500473417-07092007><FONT=20
color=3D#0000ff>></FONT></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
NT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT face=3DArial><FONT =
size=3D2><SPAN=20
class=3D500473417-07092007><FONT =
color=3D#0000ff>> </FONT></SPAN>Say the=20
eye's resolution  limit at these modest light levels is about half =
of the=20
ultimate eye resolution... oh, about  2.4 arcsec.  =3D 1/1000 =
of=20
40=B0.<SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></FONT></=
FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT face=3DArial><FONT =
size=3D2><SPAN=20
class=3D500473417-07092007><FONT=20
color=3D#0000ff>></FONT></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
NT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial><FONT=20
size=3D2><SPAN class=3D500473417-07092007><FONT =
color=3D#0000ff>></FONT></SPAN>So=20
there is no (zero, nada) value in ever putting better than a 600x800 =
display in=20
a 40=B0 FOV HMD.<SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></FONT></=
FONT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial><FONT=20
size=3D2><SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff>></FONT></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
NT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial><SPAN=20
class=3D500473417-07092007><FONT color=3D#0000ff>></FONT></SPAN>For =
anything less=20
than SVGA -- either scale down the FOV to tunnel vision, or learn to =
love=20
jaggies.<SPAN class=3D500473417-07092007><FONT=20
color=3D#0000ff> </FONT></SPAN></FONT></FONT></FONT></FONT></FONT></=
FONT></FONT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial><SPAN=20
class=3D500473417-07092007></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
NT></FONT></FONT></FONT> </DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial><SPAN=20
class=3D500473417-07092007><FONT color=3D#0000ff>You have it =
right - consumer=20
acceptability is going to be about the optics and not the resolution of =
the=20
panel - we've reached the apex of panel resolution.  =
</FONT> <FONT=20
color=3D#0000ff>New and innovative optics will give the industrial =
designers=20
something to work with to design an appealing product.  The panel =
really=20
has not much to do with the consumer acceptance of a product.  No =
panel can=20
compensate for bad optics -=20
yet.</FONT></SPAN></FONT></FONT></FONT></FONT></FONT></FONT></FONT></FONT=
></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial=20
color=3D#0000ff><SPAN=20
class=3D500473417-07092007></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
NT></FONT></FONT></FONT> </DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
face=3DArial=20
color=3D#0000ff><SPAN=20
class=3D500473417-07092007>-Tony</SPAN></FONT></FONT></FONT></FONT></FONT=
></FONT></FONT></FONT></FONT></DIV>
<DIV dir=3Dltr align=3Dleft><FONT size=3D2><FONT color=3D#000000=20
FAMILY=3D"SANSSERIF"><FONT><FONT><FONT><FONT><FONT><FONT><FONT =
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class=3D500473417-07092007></SPAN></FONT></FONT></FONT></FONT></FONT></FO=
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