cowanrg said:hehe, yeah, it will come BACK up soon. you must be a newbie. when the site went down, it had over 35K hits
ill try and get it back up this weekend. i had a problem with my host. and lost interest in the projector thing.
ill try though, there is a lot of good info there for newbies.
sweet, do you have photos of a completed one, or screenshots?
do you all think this CRT lens
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1370138301
would work for this projector setup using a 5" LCD?
http://www.geocities.com/zark5150/
I really do not want to use a fresnel lens
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=1370138301
would work for this projector setup using a 5" LCD?
http://www.geocities.com/zark5150/
I really do not want to use a fresnel lens
xblocker said:
hmm I see. I always thought when i looked at one, i would see a round lens which looked like it was one piece.
does surplusshed have a lens i could use then, without buying an OHP?
i'm gonna read some other threads and the wicki thing to see if more info exists on it
thanks for pointing that out though.
yeah, i have both. a few galleries of screenshots of various finished products. as well as pictures of projectors and such.
i just kinda left the project behind becuase at this point, there still isnt enough info to make a really great design. mine works FINE, but is nowhere NEAR consumer models, and i dont think we will be able to do one of those for under $500 for awhile.
btw - zark's design DOESNT WORK. plus, CRT lenses dont work for lcd panels. they were designed to work for the curvature of CRT tubes, so, either the middle or the edges will be in focus, and the other will be out of focus... they dont work for flat surfaces.
and, the LOA's (lights of america) that he uses are NOT good. i had one, just threw it away finally yesterday. they are bright, but the light goes everywhere, its FAR from focused.
i just kinda left the project behind becuase at this point, there still isnt enough info to make a really great design. mine works FINE, but is nowhere NEAR consumer models, and i dont think we will be able to do one of those for under $500 for awhile.
btw - zark's design DOESNT WORK. plus, CRT lenses dont work for lcd panels. they were designed to work for the curvature of CRT tubes, so, either the middle or the edges will be in focus, and the other will be out of focus... they dont work for flat surfaces.
and, the LOA's (lights of america) that he uses are NOT good. i had one, just threw it away finally yesterday. they are bright, but the light goes everywhere, its FAR from focused.
amblix1 said:
here is the deal, you are taking a FLAT source and putting it into a curved lens. therefore, the distance from various points on the panel is longer or shorter, so the panel will look in focus in places, and out of focus in others.
its just how physics works. try it first, but back in the OLD diy projector thread, it was found that this would NOT work.
a CRT lens works with a CRT tube, they are both curved....
its just how physics works. try it first, but back in the OLD diy projector thread, it was found that this would NOT work.
a CRT lens works with a CRT tube, they are both curved....
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?
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?
Mario007 said:
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
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
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.
JK.
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$$. bright in the middle, dim in distorted on the edges. its like the video version of a bagel. the crt lens forces you to put the lcd within 1"--actually less--of the lens. i busted apart a fuji crt lens i got for 6 bucks and there are actually some potentially usable elements inside. read the original thread--it's all inthere
zark's idea was quite similar to my first idea, as i was browsing my partsexpress catalog and saw the cheap auto lcds. if you look at the screenshots on his site, you will see that they suck a$$. 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
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
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
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