DIY Video Projector Part II - Page 52

amblix1 · 1st August 2002, 09:36 PM

Quote:

Originally posted by Mario007
Umm most overhead projectors do use an fresnel light before the lcd to spread the light evenly to avoid hot spotting. Cowan I have a computer that is setup using apache webserver I would be willing to host or mirror your site if you want.

Ok thats what I thought, I knew OHPs use them but I wont be using an OHP. Well I guess all I need then is a good lens. Im not picky on quality, just something to play my video games on at night

cowanrg · 1st August 2002, 09:45 PM

possibly. i have the site done, and hosting done, it just got pulled because of some disputes with my hosting over traffic...

this site pulls a LOT of people when its up. i think i was doing like 4K page visits a day near the end. i forgot how much bandwidth was used, but its more than a cable/dsl can handle for sure. it was in the multiple GB/month range.

ill get it back up and see if i need a mirror. where you located?

Quote:

Originally posted by Mario007
Umm most overhead projectors do use an fresnel light before the lcd to spread the light evenly to avoid hot spotting. Cowan I have a computer that is setup using apache webserver I would be willing to host or mirror your site if you want.

Mario007 · 1st August 2002, 10:19 PM

I live in Portland, Oregon west coast. Wow that sure is a lot of bandwidth. You might look into compressing your images a lot. Possibly a non intrusive banner ad would help you pay for your hosting? I will host as much bandwidth as I can for free in the name of diy projection. 320k upload.

cowanrg · 1st August 2002, 10:21 PM

nah, not near enough bandwidth thanks.

hosting is paid for. no worries there. its all setup, i just need time really...

images are compressed, max one is like 80k i think. trust me, its just a big site with a lot of visitors... thats all. once its up its fine. my hosting is like 100GB/month (i almost reached it the last month it was up :-)

Mitch · 2nd August 2002, 03:40 AM

Cowanrg,
How do you know that Zork5150`s projector doesn`t work? Have you tried it or something? It seems like it WOULD work. Any reason you believe otherwise?

Mitch

Mario007 · 2nd August 2002, 04:40 AM

Simply because the lights of america flourcesents aren't very high lumen which means you would have to have an awsome reflector for them. Plus his lens is a crt lens which means as was already pointed out would give an out of focus look on the outside edges. But maybe he figured some way around that. Bending his lcd panel

JK.

icculus · 2nd August 2002, 04:55 AM

zark's idea was quite similar to my first idea, as i was browsing my partsexpress catalog and saw the cheap auto lcds. if you look at the screenshots on his site, you will see that they suck a$$. bright in the middle, dim in distorted on the edges. its like the video version of a bagel. the crt lens forces you to put the lcd within 1"--actually less--of the lens. i busted apart a fuji crt lens i got for 6 bucks and there are actually some potentially usable elements inside. read the original thread--it's all inthere

Mitch · 2nd August 2002, 05:20 AM

So his lens, the Delta IV, is no good for projecting?

Mitch

icculus · 2nd August 2002, 05:44 AM

buy one and try it , if you like. they're pretty cheap. apparently, they made a lot of these at some point. edmund has beesn selling them for years. i beleive theyre from the old scool huge front projection tv's of years ago. nothing wrong with them, but not really what we're looking for

cowanrg · 2nd August 2002, 06:45 AM

uh, no... they ahve been tested MANY times, and proven to not work. the inside will be focused, but outside will be blurry. or vice versa.

Quote:

Originally posted by Mitch
So his lens, the Delta IV, is no good for projecting?

Mitch

2nd August 2002, 04:55 AM	#517
icculus diyAudio Member Join Date: May 2002 Location: srq, florida	zark zark's idea was quite similar to my first idea, as i was browsing my partsexpress catalog and saw the cheap auto lcds. if you look at the screenshots on his site, you will see that they suck a$$. bright in the middle, dim in distorted on the edges. its like the video version of a bagel. the crt lens forces you to put the lcd within 1"--actually less--of the lens. i busted apart a fuji crt lens i got for 6 bucks and there are actually some potentially usable elements inside. read the original thread--it's all inthere __________________ focus on the big picture

2nd August 2002, 05:44 AM	#519
icculus diyAudio Member Join Date: May 2002 Location: srq, florida	delt iv buy one and try it , if you like. they're pretty cheap. apparently, they made a lot of these at some point. edmund has beesn selling them for years. i beleive theyre from the old scool huge front projection tv's of years ago. nothing wrong with them, but not really what we're looking for __________________ focus on the big picture

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1st August 2002, 10:19 PM	#513
Mario007 diyAudio Member Join Date: Jul 2002 Location: Portland	I live in Portland, Oregon west coast. Wow that sure is a lot of bandwidth. You might look into compressing your images a lot. Possibly a non intrusive banner ad would help you pay for your hosting? I will host as much bandwidth as I can for free in the name of diy projection. 320k upload.

1st August 2002, 10:21 PM	#514
cowanrg diyAudio Member Join Date: Apr 2002 Location: Lafayette, CO	nah, not near enough bandwidth thanks. hosting is paid for. no worries there. its all setup, i just need time really... images are compressed, max one is like 80k i think. trust me, its just a big site with a lot of visitors... thats all. once its up its fine. my hosting is like 100GB/month (i almost reached it the last month it was up :-)

2nd August 2002, 03:40 AM	#515
Mitch diyAudio Member Join Date: Jul 2002 Location: Indiana, USA	Cowanrg, How do you know that Zork5150`s projector doesn`t work? Have you tried it or something? It seems like it WOULD work. Any reason you believe otherwise? Mitch

2nd August 2002, 04:40 AM	#516
Mario007 diyAudio Member Join Date: Jul 2002 Location: Portland	Simply because the lights of america flourcesents aren't very high lumen which means you would have to have an awsome reflector for them. Plus his lens is a crt lens which means as was already pointed out would give an out of focus look on the outside edges. But maybe he figured some way around that. Bending his lcd panel JK.

2nd August 2002, 05:20 AM	#518
Mitch diyAudio Member Join Date: Jul 2002 Location: Indiana, USA	So his lens, the Delta IV, is no good for projecting? Mitch

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