[simpits-tech] Teaser pics...
Akin, Keenan L
simpits-tech@simpits.org
Fri, 24 Jan 2003 10:20:41 -0600
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Wow. I never thought I would see the term, "bedsheet rear projection" =
used on this list. You should all be ashamed. ;)
=20
Keenan
-----Original Message-----
From: Alan D. Mazurka [mailto:adm.design@verizon.net]
Sent: Friday, January 24, 2003 7:46 AM
To: simpits-tech@simpits.org
Cc: adm.design@verizon.net
Subject: RE: [simpits-tech] Teaser pics...
Hi, Gene.
mine mixed with yours.
At 02:46 PM 1/23/03 -0800, you wrote:
> Looks cool, Gene. Are you rear projecting on the screen?
>
This new effort uses a 9' x 8' screen frame made of 2x4 and 6 "L" =
brackets
per corner for strength. The screen material is a queen sized flat =
sheet,
made of 230 thread per inch fabric. I hope to be able to test this on
Saturday night.
i am REALLLLLY interested in your outcome on this. i'm also curious =
about the nature of the "hot spot" of an overhead projector (versus =
LCD/DLP projectors), since a fresnel is involved in the light path of =
the overhead version. if i read the propaganda for "real" =
rear-projection screens, one side of the screen contains a fresnel =
element.
This screen will be positioned at the end of the nose instead of right =
in
front of the windscreen like #2 was. The hope is that the larger view
will provide a more realistic view.
BTW, the projectoion system consists of a second hand 800x600 LCD
projection panel sitting atop a 4000 Lumen 3M Overhead Projector. If
you're going to do rear projection this way, 4000 Lumen is pretty much =
the
minimum if you want good daylight scenes.
i wonder where they measure the 4000 lumens, since i've read that a huge =
amount of light ends up not getting to the screen. a 4000 lumen DLP/LCD =
projector could be overkill, given identical circumstances. i have built =
cardboard "shutters" to close off the windows in the sim area to give me =
better control over the light. stray light from the projector serves to =
illuminate the cockpit pretty well.
of course this changes when i move to rear-projection - the cockpit =
should get a lot darker.
to repeat myself, i will be watching your results with bedsheet rear =
projection very closesly
thanks,
- adm -=20
_____ =20
Alan D. Mazurka Webspace Design & Implementation
adm.design@verizon.net =20
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<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D234411916-24012003>Wow. I never thought I would see the =
term,=20
"bedsheet rear projection" used on this list. You should all be=20
ashamed. ;)</SPAN></FONT></DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D234411916-24012003></SPAN></FONT> </DIV>
<DIV><FONT color=3D#0000ff face=3DArial size=3D2><SPAN=20
class=3D234411916-24012003>Keenan</SPAN></FONT></DIV>
<BLOCKQUOTE>
<DIV align=3Dleft class=3DOutlookMessageHeader dir=3Dltr><FONT =
face=3DTahoma=20
size=3D2>-----Original Message-----<BR><B>From:</B> Alan D. Mazurka=20
[mailto:adm.design@verizon.net]<BR><B>Sent:</B> Friday, January 24, =
2003 7:46=20
AM<BR><B>To:</B> simpits-tech@simpits.org<BR><B>Cc:</B>=20
adm.design@verizon.net<BR><B>Subject:</B> RE: [simpits-tech] Teaser=20
pics...<BR><BR></DIV></FONT>Hi, Gene.<BR><BR>mine mixed with =
yours.<BR><BR>At=20
02:46 PM 1/23/03 -0800, you wrote:<BR><BR>
<BLOCKQUOTE class=3Dcite cite type=3D"cite">> Looks cool, =
Gene. Are you=20
rear projecting on the screen?<BR>><BR><BR>This new effort uses a =
9' x 8'=20
screen frame made of 2x4 and 6 "L" brackets<BR>per corner for=20
strength. The screen material is a queen sized flat =
sheet,<BR>made of=20
230 thread per inch fabric. I hope to be able to test this=20
on<BR>Saturday night.<BR></BLOCKQUOTE><BR>i am REALLLLLY interested =
in your=20
outcome on this. i'm also curious about the nature of the "hot spot" =
of an=20
overhead projector (versus LCD/DLP projectors), since a fresnel is =
involved in=20
the light path of the overhead version. if i read the propaganda for =
"real"=20
rear-projection screens, one side of the screen contains a fresnel=20
element.<BR><BR>
<BLOCKQUOTE class=3Dcite cite type=3D"cite">This screen will be =
positioned at=20
the end of the nose instead of right in<BR>front of the windscreen =
like #2=20
was. The hope is that the larger view<BR>will provide a more =
realistic=20
view.<BR><BR>BTW, the projectoion system consists of a second hand =
800x600=20
LCD<BR>projection panel sitting atop a 4000 Lumen 3M Overhead=20
Projector. If<BR>you're going to do rear projection this way, =
4000=20
Lumen is pretty much the<BR>minimum if you want good daylight=20
scenes.<BR></BLOCKQUOTE><BR>i wonder where they measure the 4000 =
lumens, since=20
i've read that a huge amount of light ends up <I>not</I> getting to =
the=20
screen. a 4000 lumen DLP/LCD projector could be overkill, given =
identical=20
circumstances. i have built cardboard "shutters" to close off the =
windows in=20
the sim area to give me better control over the light. stray light =
from the=20
projector serves to illuminate the cockpit pretty well.<BR><BR>of =
course this=20
changes when i move to rear-projection - the cockpit should get a lot=20
darker.<BR><BR>to repeat myself, i will be watching your results with =
bedsheet=20
rear projection very closesly<BR><BR>thanks,<BR><BR> - adm -=20
<BR><BR><X-SIGSEP>
<P></X-SIGSEP>
<HR>
<BR>Alan D.=20
=
Mazurka =
=20
Webspace Design &=20
Implementation<BR>adm.design@verizon.net =20
<BR></BLOCKQUOTE></BODY></HTML>
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