You mean closed nose? Heh, my voice sounds wierd when it's recorded, extremely wierd. To be honest, I do not like it much but it's mine 🙂 . It'd be a pain in the **** to make subtitles for the video, it took about 3 hours to get the compression right. But thanks for the compliment
He didn't really say much, Rox...mostly stuff like "here's the precondensor" while pointing at it. The main nice thing about it was getting a good feel of how it all goes together, not just the box but the screen and the room as well.
I also recorded my brother playing need for speed 2 on xbox through the vdigi transcoder. If you guys are interested in seeing how the picture looks using it let me know, I'll convert the video and post it
hey quick question:
If I were to cut my 220mm and 330mm fresnels from diyprojectorcompany.com...you know the big ones that can cover this monitor entirely, to the stripped LCD size, does it matter(quality wise) how I cut it (i mean having the cut out piece centered or just cut a L out of the big rectangular fresnel?
BTW, 220mm and 330mm should be decent for the 80mm standard triplet right? can you give me a diagram of how far the light needs to be away from the fresnels....etc?
If I were to cut my 220mm and 330mm fresnels from diyprojectorcompany.com...you know the big ones that can cover this monitor entirely, to the stripped LCD size, does it matter(quality wise) how I cut it (i mean having the cut out piece centered or just cut a L out of the big rectangular fresnel?
BTW, 220mm and 330mm should be decent for the 80mm standard triplet right? can you give me a diagram of how far the light needs to be away from the fresnels....etc?
You have to cut around the whole edge of the fresnels, the focal point is over the center.
Lumenlabs fresnel are cut to size for a 15" screen.
Lumenlabs fresnel are cut to size for a 15" screen.
lens spacing
Those are probably the very best fresnels you could get for that projection lens.
Spacing really depends on the throw distance, but here is what you need for 8 feet:
Start with lamp arc to 220 fresnel distance of 220 mm.
Then 20 mm between fresnel and LCD. (Grooves face LCD.)
Then 30 mm between LCD and 330 fresnel. (Grooves face LCD.)
Then around 340 mm to projection lens.
Move the projection lens back and forth until you get a sharp image on the screen, at your real throw distance. Then you can try adjusting the lamp to 220 fresnel distance to see if you can get a better looking image. That adjustment will be just a cm or so in each direction. You can move the lamp or the 220 fresnel, as long as the fresnel does not get closer to the LCD than 20 mm.
Don't forget to protect your eyes if you run the lamp with your enclosure open, while making adjustments: Good UV blocking sunglasses at least. Welder's goggles are better.
Those are probably the very best fresnels you could get for that projection lens.
Spacing really depends on the throw distance, but here is what you need for 8 feet:
Start with lamp arc to 220 fresnel distance of 220 mm.
Then 20 mm between fresnel and LCD. (Grooves face LCD.)
Then 30 mm between LCD and 330 fresnel. (Grooves face LCD.)
Then around 340 mm to projection lens.
Move the projection lens back and forth until you get a sharp image on the screen, at your real throw distance. Then you can try adjusting the lamp to 220 fresnel distance to see if you can get a better looking image. That adjustment will be just a cm or so in each direction. You can move the lamp or the 220 fresnel, as long as the fresnel does not get closer to the LCD than 20 mm.
Don't forget to protect your eyes if you run the lamp with your enclosure open, while making adjustments: Good UV blocking sunglasses at least. Welder's goggles are better.
i know, i would have bought those fresnels from lumen lab if i was using a 15 incher. Mine is 15.4 just like in this thread...so lumen lab's fresnels can't cover the whole screen
Nope they can't, but it works great if you keep the resolution at 1024x768. My new lenses should be here by the end of the month (15.5x15.5) and im going to cut them down and mount 'em in between two pieces of lexan xl10.
also, i ordered the 15.5x15.5 big fresnels from diyprojectorcompany two days ago...do you think it will take them till the end of the month to ship those things?? i really want to get the projector done as soon as possible
Yes, Alan said he was trying to get his supplier to bump our order ahead. I think it still stands at around 8/22
Just wanted to say awesome thread!
Registered here to ask some questions because I believe you guys could help. Couple days ago my Proview 556 LCD died, well the backlight flickers on for a second, so I pulled the thing apart. I had seen the tomshardware overhead projector thing and thought maybe I'd construction, then I stumbled across the lumenlab site. I'm debating whether or not I should embark on this project.
Right now I have the LCD gutted, but am wondering if I should spend the $20 and get the plans off lumenlab. I'm pretty sure my LCD is over 15 inches, looks about 15.4 diagonal - does this throw the rest of the guide off? I need a different fresnel according to what you guys are posting here, is this why the corners are a little dark in the video?
Also looks like the project is going to run about $250+, is that a fair estimate? Looks like Lumen is out of stock on a lot of their parts, are there any alternative providers?
Registered here to ask some questions because I believe you guys could help. Couple days ago my Proview 556 LCD died, well the backlight flickers on for a second, so I pulled the thing apart. I had seen the tomshardware overhead projector thing and thought maybe I'd construction, then I stumbled across the lumenlab site. I'm debating whether or not I should embark on this project.
Right now I have the LCD gutted, but am wondering if I should spend the $20 and get the plans off lumenlab. I'm pretty sure my LCD is over 15 inches, looks about 15.4 diagonal - does this throw the rest of the guide off? I need a different fresnel according to what you guys are posting here, is this why the corners are a little dark in the video?
Also looks like the project is going to run about $250+, is that a fair estimate? Looks like Lumen is out of stock on a lot of their parts, are there any alternative providers?
Hey politicorific,
Nice to see a new face. I wouldn't spend the money on the guide because it basically shows you what I did in the video. Another option for lighting and optics is DiyProjectorCompany . He has free guides on his website. Feel free to ask him (Alan) any questions he normally answer quite well. I went the lumenlab way because everything was cheaper (I'm using the 400W mogul kit). I would recommend waiting until they have the stuff in stock. As for the fresnels, I ordered them about a month or two ago from diyprojectorcompany but they were out of stock when I ordered them (15.5"x15.5") 220mm FL and 330mm FL.
Nice to see a new face. I wouldn't spend the money on the guide because it basically shows you what I did in the video. Another option for lighting and optics is DiyProjectorCompany . He has free guides on his website. Feel free to ask him (Alan) any questions he normally answer quite well. I went the lumenlab way because everything was cheaper (I'm using the 400W mogul kit). I would recommend waiting until they have the stuff in stock. As for the fresnels, I ordered them about a month or two ago from diyprojectorcompany but they were out of stock when I ordered them (15.5"x15.5") 220mm FL and 330mm FL.
Can you please check the exact model name of your proview lcd.
Is it UK513 ? Is there another version that is only 15 inch ?
Is it UK513 ? Is there another version that is only 15 inch ?
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