mccar
great job mccar excelent results too all u need now is the marble ive got on mine to shaby it up abit lol
great job mccar excelent results too all u need now is the marble ive got on mine to shaby it up abit lol
chbright
chbright i beleive that is the site thanks buddy a heap, u just saved me countless hours in the forum reading looking for it as it is i was in there tonight another 3 hrs lol
Thanks Trev
chbright i beleive that is the site thanks buddy a heap, u just saved me countless hours in the forum reading looking for it as it is i was in there tonight another 3 hrs lol
Thanks Trev
mcarangelo
Nice job!!
I have constructed my projector on Alan's design, but do not have the mirror to fold the focal point on the fresnel lens.
I am waiting for my new fresnel and triplette lens to arrive to perform my first upgrade on the unit. I am only running at 100" and am still not satisfied with the brightness and the contrast of my old OHP lenses.
Did you experiment with any other lense before using the triplette? Did you split you fresnel or mount the double fresnel behind the lcd? Are you running an exact 14" focal length from the light source to the fresnel?
Thanks, since we are working from a similar base, I thought we might be able to do some direct comparisions.
Ken
Nice job!!
I have constructed my projector on Alan's design, but do not have the mirror to fold the focal point on the fresnel lens.
I am waiting for my new fresnel and triplette lens to arrive to perform my first upgrade on the unit. I am only running at 100" and am still not satisfied with the brightness and the contrast of my old OHP lenses.
Did you experiment with any other lense before using the triplette? Did you split you fresnel or mount the double fresnel behind the lcd? Are you running an exact 14" focal length from the light source to the fresnel?
Thanks, since we are working from a similar base, I thought we might be able to do some direct comparisions.
Ken
No other lens compares to the triplett. I compared a meniscus just to see. No contest. I did not separate the fresnel. I did cut it down to make the unit a little smaller. Cutting it was not easy because it is brittle.
You really don't want to put anything in front of the LCD. Once the light passes through the LCD, anything you do will add distortion, with the exception of a front surface mirror- which is expensive.
The mirror doing the folding inside my design is a regular 12" square mirror that I got from Walmart $8.00 for a pack of 10. I had to cut it down to 10" on one side with a glass cutter. EZ. I found that the lamp worked better at 15". Probably because it is not a true point source and moving it further back allows more of the light coming from the bulb to be utilitized but that is just a guess. If you have microsoft Publisher, it can really help you construct the angles that you need. You just need to know your trig.
I will be posting more design info on my website today.
http://www.mdc.nicsystems.com
You really don't want to put anything in front of the LCD. Once the light passes through the LCD, anything you do will add distortion, with the exception of a front surface mirror- which is expensive.
The mirror doing the folding inside my design is a regular 12" square mirror that I got from Walmart $8.00 for a pack of 10. I had to cut it down to 10" on one side with a glass cutter. EZ. I found that the lamp worked better at 15". Probably because it is not a true point source and moving it further back allows more of the light coming from the bulb to be utilitized but that is just a guess. If you have microsoft Publisher, it can really help you construct the angles that you need. You just need to know your trig.
I will be posting more design info on my website today.
http://www.mdc.nicsystems.com
well before this thread is about to die again here is somthing that might give a few answers with laptop lds and lcd's with no controlers
http://www.eio.com/lcdconnect.htm
http://www.eio.com/lcdconnect.htm
oh look here are some more answers to some of your questions about lcd's
http://www.eio.com/public/lcd/
http://www.eio.com/public/lcd/
ace3000_1 said:
Please put this piece of information in the "newbies" thread, with proper reference of course.
Hi !
I will recieve my optic parts from DIY Lab soon.
But I'm wondering which design I will do : is it easy to use a miror before the lens to change the direction of the projector : horizontal to vertical ???
thx
I will recieve my optic parts from DIY Lab soon.
But I'm wondering which design I will do : is it easy to use a miror before the lens to change the direction of the projector : horizontal to vertical ???
thx
Negative Design:The Cpu speed is 75mhz, it's really old, the book that came with adapter said it can produce full screen video at a good speed. I have no idea what the constrast ratio, or how many colors it can produce, I have a Toshiba laptop that has the same screen it can produce 640x480x16.4million and contrast ratio of 100:1 so I guess they can be the same but I don't know.
Property: The Compaq LTE laptop are the only ones I know of that have this kind of adapter, but there are two pcmcia card capture devices, Irez capture card and the Margi Tv to go pcmcia card
Property: The Compaq LTE laptop are the only ones I know of that have this kind of adapter, but there are two pcmcia card capture devices, Irez capture card and the Margi Tv to go pcmcia card
Sand Blasted plexi Screen
Ace3000
Have you tried this yet I have also been thinking on this subject somewhat except i was thinking of glass that had been acid etched or something.
I have finally started getting some equipment so soon I will be needing my screen, I'll be experimenting it also
Ace3000
Have you tried this yet I have also been thinking on this subject somewhat except i was thinking of glass that had been acid etched or something.
I have finally started getting some equipment so soon I will be needing my screen, I'll be experimenting it also
dnt32
na i havnt tried the sand blasting idea yet i think it will work diff from the glass idea being etched as the perspex will have pits that will get illuminated, i figure u will need a very fine grit so the pic will look fine and u will not get any bright spots on the image of the pits lighting up too much or to big in each pit , im sure the glass idea will work though but abit different, it might not be as effiecient either we will have to give it a try, good luck if u do before me
Trev
na i havnt tried the sand blasting idea yet i think it will work diff from the glass idea being etched as the perspex will have pits that will get illuminated, i figure u will need a very fine grit so the pic will look fine and u will not get any bright spots on the image of the pits lighting up too much or to big in each pit , im sure the glass idea will work though but abit different, it might not be as effiecient either we will have to give it a try, good luck if u do before me
Trev
Compaq Lte 5000
I got all the pieces to laptop, I installrd all the software and hookup the the adapter, I started the program that lets you watch tv on it and the screen went crazy, the program didn't even start, I've tried changing the resolution, reinstalling all the programs and the damn thing just won't work. If anyone is good with computers could you please help me.
The laptop is a Compaq LTE 5000 75Mhz, 16Mb ram, 1.3Gb hd, 11.3 tft screen, floppy drive, battery, Mpeg and Tv adapter and Windows 3.11 installed, all other program work fine. I'll sell for $75 bucks or who ever has the best price if anyone wants it, even if you can't get the program working it can make a great second or backup computer.
Remarque@carolina.net
I got all the pieces to laptop, I installrd all the software and hookup the the adapter, I started the program that lets you watch tv on it and the screen went crazy, the program didn't even start, I've tried changing the resolution, reinstalling all the programs and the damn thing just won't work. If anyone is good with computers could you please help me.
The laptop is a Compaq LTE 5000 75Mhz, 16Mb ram, 1.3Gb hd, 11.3 tft screen, floppy drive, battery, Mpeg and Tv adapter and Windows 3.11 installed, all other program work fine. I'll sell for $75 bucks or who ever has the best price if anyone wants it, even if you can't get the program working it can make a great second or backup computer.
Remarque@carolina.net
Attachments
dunno if this is the right place to post this. I tried starting a new thread, but every time I did the window popped up telling me to search the forums, which I've already been doing nonstop for the past few days.
Anyway, I was wondering if anyone has taken a look at NEC industrial LCD screens. They make a few 6.5" screens, one of which has XGA resolution (1024X768). It seems like one of these would be perfect for those who want to make a smaller projector but with the resolution of one of those 15" monitors. The model number is NL10276BC12-02. It's got XGA res, a 300:1 CR, and 21 ms response time, running at 16 million colors.
The only issue I can see is it requires a LVDS connector, which I know nothing about. NEC also makes a few 6" VGA panels, which take CMOS connectors. Again, no clue. If any of you electronics genii could shed some light on this, that'd be great. I sent an inquiry to find out how much these would cost, and I haven't gotten a reply yet.
Right now there's one of the VGA panels going on ebay with a buy it now of $80, if you want to find out if they can be disassembled easily. If it turns out that we can buy the screens in quantity, would anyone be interested? Thanks.
If you want to check out the lcd screens, go to www.nec-lcd.com, click on English, and then go to the industrail section.
Anyway, I was wondering if anyone has taken a look at NEC industrial LCD screens. They make a few 6.5" screens, one of which has XGA resolution (1024X768). It seems like one of these would be perfect for those who want to make a smaller projector but with the resolution of one of those 15" monitors. The model number is NL10276BC12-02. It's got XGA res, a 300:1 CR, and 21 ms response time, running at 16 million colors.
The only issue I can see is it requires a LVDS connector, which I know nothing about. NEC also makes a few 6" VGA panels, which take CMOS connectors. Again, no clue. If any of you electronics genii could shed some light on this, that'd be great. I sent an inquiry to find out how much these would cost, and I haven't gotten a reply yet.
Right now there's one of the VGA panels going on ebay with a buy it now of $80, if you want to find out if they can be disassembled easily. If it turns out that we can buy the screens in quantity, would anyone be interested? Thanks.
If you want to check out the lcd screens, go to www.nec-lcd.com, click on English, and then go to the industrail section.