Re: Perhaps a cheaper HMD

From Wear-Hard Mailing list Archive (WH) Maintained by R. Paul McCarty

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In a message dated 9/7/07 3:26:22 PM,  writes:

> =C2=A0> Certainly QVGA, on which a simple clock face looks ragged, can onl=
y be=20
> useful as a speedometer or heart rate monitor. As a video display it is ra=
ted=20
> "suck".=C2=A0
>  =C2=A0
>  Oliver, being one of the Grandfathers of HMDs, you should remember a time=
=20
> where QVGA was considered high res.=C2=A0 You were still making good produ=
cts with=20
> what would be considered "low res" today. What's changed other than the=20
> availability of better, higher resolution displays?
>=20
>           Tony - the adjective "suck-o" was said of QVGA, on day one.  =20
Private Eye (720X280) looked comparatively good, though only in red.   Looke=
d=20
especially attractive at 2.25 oz and $795. It was a beautiful 25-line=20
alphanumeric display, but as a graphic display it...sucked.=20
Now Microvision has increased the horizontal resolution by 80% -- for only=20
ten times the price -- and it is quite good for graphic images.

QVGA was good for getting first-time people excited about the potential for=20
HMDs, back when.   And is still good for simple alphanumerics at work and to=
ys=20
at home.

I made VGA HMDs and they had to be squeezed in FOV to avoid the jaggies.  =20
SVGA let me deliver 40=C2=B0 FOV where individual pixels could only be seen=20=
if you=20
really squinted.

As soon as I get these projects off my plate, I'll be back with the Final=20
Solution=E2=84=A2.....
A fully integrated wearable office.

> >=C2=A0SVGA gives a good enough image and will likely be the one that Make=
s It=20
> Big... if ever people integrate enough useful functions to make a HMD wort=
h=20
> wearing in the mass market.=C2=A0
>  >=C2=A0Say 40=C2=B0 diagonal FOV:=C2=A0 any less feels like tunnel vision=
;=C2=A0 any more just=20
> can't be eye-scanned without muscle strain... and the optics becomes=20
> cost-impractical.=C2=A0=C2=A0
>  >=C2=A0That's why a million night vision goggles have 40=C2=B0 FOV.=C2=
=A0
>  >
>  >=C2=A0Say the eye's resolution=C2=A0 limit at these modest light levels=20=
is about=20
> half of the ultimate eye resolution... oh, about=C2=A0 2.4 arcsec.=C2=A0=20=
=3D 1/1000 of 40=C2=B0.=C2=A0
>  >
>  >So there is no (zero, nada) value in ever putting better than a 600x800=20
> display in a 40=C2=B0 FOV HMD.=C2=A0
>  >
>  >For anything less than SVGA -- either scale down the FOV to tunnel visio=
n,=20
> or learn to love jaggies.=C2=A0
>  =C2=A0
>  You have it right=C2=A0- consumer acceptability is going to be about the=20=
optics=20
> and not the resolution of the panel - we've reached the apex of panel=20
> resolution.=C2=A0 =C2=A0New and innovative optics will give the industrial=
 designers something=20
> to work with to design an appealing product.=C2=A0 The panel really has no=
t much=20
> to do with the consumer acceptance of a product.=C2=A0 No panel can compen=
sate for=20
> bad optics - yet.
>  =C2=A0
>  -Tony
>  =C2=A0Yeah;   one has to assume that the designer will make   the optics=20=
low=20
> aberration and distortion free.=20
>=20
> I still don't know how to make them less ugly than Jordi glasses.   40=C2=
=B0 FOV=20
> on a 1/2" square display is an unavoidable 21 mm back focal length.  =20
> Something remains to be invented.
>=20
> Oliver=20

**************************************
 See what's new at http://www.aol.com

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<HTML><FONT FACE=3Darial,helvetica><HTML><FONT COLOR=3D"#000000" FACE=3D"Gen=
eva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
In a message dated 9/7/07 3:26:22 PM,  writes:<BR>
<BR>
<BR>
<BLOCKQUOTE CITE STYLE=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px;=20=
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px" TYPE=3D"CITE"></FONT><FONT COLOR=3D"#0=
000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2">=C2=A0></FONT><FONT=
 COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2"> Certainly=
 QVGA, on which a simple clock face looks ragged, can only be useful as a sp=
eedometer or heart rate monitor. As a video display it is rated "suck".</FON=
T><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2">=
=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SI=
ZE=3D"2"><BR>
 =C2=A0<BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> Oliver, being one of the Grandfathers of HMDs, you should remember a time=
 where QVGA was considered high res.=C2=A0 You were still making good produc=
ts with what would be considered "low res" today. What's changed other than=20=
the availability of better, higher resolution displays?</FONT><FONT COLOR=
=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"=
2"><BR>
</BLOCKQUOTE></FONT><FONT COLOR=3D"#004000" FACE=3D"Geneva" FAMILY=3D"SANSSE=
RIF" SIZE=3D"2">      </FONT><FONT COLOR=3D"#008040=
" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2">    Tony - the a=
djective "suck-o" was said of QVGA, on day one.   <BR>
Private Eye (720X280) looked comparatively good, though only in red.  =20=
Looked especially attractive at 2.25 oz and $795. It was a beautiful 25-line=
 alphanumeric display, but as a graphic display it...sucked. <BR>
Now Microvision has increased the horizontal resolution by 80% -- for only t=
en times the price -- and it is quite good for graphic images.<BR>
<BR>
QVGA was good for getting first-time people excited about the </FONT><FONT C=
OLOR=3D"#008040" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><I>potentia=
l</I></FONT><FONT COLOR=3D"#008040" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZ=
E=3D"2"> for HMDs, back when.   And is still good for simple alphanumer=
ics at work and toys at home.<BR>
<BR>
I made VGA HMDs and they had to be squeezed in FOV to avoid the jaggies.&nbs=
p;  SVGA let me deliver 40=C2=B0 FOV where individual pixels could only be s=
een if you really squinted.<BR>
<BR>
As soon as I get these projects off my plate, I'll be back with the Final So=
lution=E2=84=A2.....<BR>
A fully integrated wearable office.</FONT><FONT COLOR=3D"#000000" FACE=3D"Ge=
neva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
<BR>
<BLOCKQUOTE CITE STYLE=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px;=20=
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px" TYPE=3D"CITE"></FONT><FONT COLOR=3D"#0=
000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2">>=C2=A0</FONT><FONT=
 COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2">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.</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSER=
IF" SIZE=3D"2">=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=
=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> >=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSER=
IF" SIZE=3D"2">Say 40=C2=B0 diagonal FOV:=C2=A0 any less feels like tunnel v=
ision;=C2=A0 any more just can't be eye-scanned without muscle strain... and=
 the optics becomes cost-impractical.=C2=A0</FONT><FONT COLOR=3D"#0000FF" FA=
CE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2">=C2=A0</FONT><FONT COLOR=3D"#00=
0000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SI=
ZE=3D"2">=C2=A0That's why a million night vision goggles have 40=C2=B0 FOV.<=
/FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2"=
>=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" S=
IZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" S=
IZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> >=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSER=
IF" SIZE=3D"2">Say the eye's resolution=C2=A0 limit at these modest light le=
vels is about half of the ultimate eye resolution... oh, about=C2=A0 2.4 arc=
sec.=C2=A0 =3D 1/1000 of 40=C2=B0.</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Ari=
al" FAMILY=3D"SANSSERIF" SIZE=3D"2">=C2=A0</FONT><FONT COLOR=3D"#000000" FAC=
E=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" S=
IZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SI=
ZE=3D"2">So there is no (zero, nada) value in ever putting better than a 600=
x800 display in a 40=C2=B0 FOV HMD.</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Ar=
ial" FAMILY=3D"SANSSERIF" SIZE=3D"2">=C2=A0</FONT><FONT COLOR=3D"#000000" FA=
CE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" S=
IZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> ></FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SI=
ZE=3D"2">For anything less than SVGA -- either scale down the FOV to tunnel=20=
vision, or learn to love jaggies.</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Aria=
l" FAMILY=3D"SANSSERIF" SIZE=3D"2">=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=
=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
 =C2=A0<BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> You have it right=C2=A0- consumer acceptability is going to be about the=20=
optics and not the resolution of the panel - we've reached the apex of panel=
 resolution.=C2=A0</FONT><FONT COLOR=3D"#000000" FACE=3D"Arial" FAMILY=3D"SA=
NSSERIF" SIZE=3D"2"> =C2=A0</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAM=
ILY=3D"SANSSERIF" SIZE=3D"2">New and innovative optics will give the industr=
ial designers something to work with to design an appealing product.=C2=A0 T=
he panel really has not much to do with the consumer acceptance of a product=
.=C2=A0 No panel can compensate for bad optics - yet.</FONT><FONT COLOR=3D"#=
000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
 =C2=A0<BR>
</FONT><FONT COLOR=3D"#0000FF" FACE=3D"Arial" FAMILY=3D"SANSSERIF" SIZE=3D"2=
"> -Tony</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF"=20=
SIZE=3D"2"><BR>
 </FONT><FONT COLOR=3D"#008040" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=
=3D"2">=C2=A0Yeah;   one has to assume that the designer will make =
;  the optics low aberration and distortion free. </FONT><FONT COLOR=3D"#008=
040" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2"><BR>
</BLOCKQUOTE></FONT><FONT COLOR=3D"#008040" FACE=3D"Geneva" FAMILY=3D"SANSSE=
RIF" SIZE=3D"2"><BR>
<BLOCKQUOTE CITE STYLE=3D"BORDER-LEFT: #0000ff 2px solid; MARGIN-LEFT: 5px;=20=
MARGIN-RIGHT: 0px; PADDING-LEFT: 5px" TYPE=3D"CITE"></FONT><FONT COLOR=3D"#0=
08040" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"2">I still don't know ho=
w to make them less ugly than Jordi glasses.   40=C2=B0 FOV on a 1/2" s=
quare display is an unavoidable 21 mm back focal length.   Something re=
mains to be invented.<BR>
<BR>
</BLOCKQUOTE></FONT><FONT COLOR=3D"#008040" FACE=3D"Geneva" FAMILY=3D"SANSSE=
RIF" SIZE=3D"2">Oliver </FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=
=3D"SANSSERIF" SIZE=3D"2"><BR>
</FONT><FONT COLOR=3D"#000000" FACE=3D"Geneva" FAMILY=3D"SANSSERIF" SIZE=3D"=
2"></FONT><BR><BR><BR>**************************************<BR> See what's=20=
new at http://www.aol.com</HTML>

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