Gabriel,
CRT projectors use 3 tube display/monitors that produce red, green and blue, individually. The images of each pass through the 3 lenses and are converged to form a color image. CRT projectors usually have test signal patterns to align the three CRT images, or a signal can be injected by a VCR tape or DVD. The CRTs come in sizes (I believe) 5", 7", 9". The larger the better. Some have liquid cooling to keep noise to a minimum.
I have seen shipping weights of 125 to 250lbs. Because of the weight and the setup, I wouldn't recommend one if your setup changes often. CRT projectors are capable of producing 1000+ lines of resolution w/ a component input signal. Some are able to perserve a 16:9 ratio. CRTs are not the brightest projectors, but the picture is probably most film like.
Hope this helps.
Vince
CRT projectors use 3 tube display/monitors that produce red, green and blue, individually. The images of each pass through the 3 lenses and are converged to form a color image. CRT projectors usually have test signal patterns to align the three CRT images, or a signal can be injected by a VCR tape or DVD. The CRTs come in sizes (I believe) 5", 7", 9". The larger the better. Some have liquid cooling to keep noise to a minimum.
I have seen shipping weights of 125 to 250lbs. Because of the weight and the setup, I wouldn't recommend one if your setup changes often. CRT projectors are capable of producing 1000+ lines of resolution w/ a component input signal. Some are able to perserve a 16:9 ratio. CRTs are not the brightest projectors, but the picture is probably most film like.
Hope this helps.
Vince
Hi all,
here are some drawing base on my knowledge so far:
DRAWING 1
That is a simplified version drawing of commercial LCD projector. They use tiny LCD panel, there is no light spread around, thank's to the good reflector and condenser lens.
DRAWING 2
That is most of us do for diy projector.
We use big LCD panel size, from 5" to 15" !
To get the light not spread around, we use fresnel glass. It must be bigger than LCD panel so all the light beam will fit into the lens size. To achieve this, we need correct focallength for fresnel glass & lens .
DRAWING 3
That is my rough idea, we use second reflector (C) and louvre (H) to replace fresnel glass. It will bend light beam to the LCD panel.
Beam reflector can be made from bended reflective metal sht.
Louvre is some kind like commonly use in office fluorescent lamp cover. It can be made from thin reflective metal fins put together in a row horizontal and vertical with gap in between.
Beam reflector can be adjusted so all the light beam will fall inside the panel and hopely to the lens too. (need 4 units of beam reflector for each side of the panel). Width of the fin and distance between fins should adjusted properly so light spread is minimum.
To make the whole image on the panel fit into proj. lens, we need condenser lens with very short focallength (E1). It will shrink image from the panel to the size not bigger than proj. lens (E2).
http://www.education.eth.net/acads/physics/light-X.htm
case #5.
The shrinking image (G) will captured by proj. lens (E2) and will projected to the screen.
http://www.education.eth.net/acads/physics/light-X.htm
case #3.
DRAWING 4
That will be my Prototype.
Lamp reflector and beam reflector in one continuous metal sht. Clear glass to prevent heat reaching panel.
Not yet think about cooling fan.
That's all guys, sorry for long post.
Please correct me if I am wrong.
See you.
here are some drawing base on my knowledge so far:
DRAWING 1
That is a simplified version drawing of commercial LCD projector. They use tiny LCD panel, there is no light spread around, thank's to the good reflector and condenser lens.
DRAWING 2
That is most of us do for diy projector.
We use big LCD panel size, from 5" to 15" !
To get the light not spread around, we use fresnel glass. It must be bigger than LCD panel so all the light beam will fit into the lens size. To achieve this, we need correct focallength for fresnel glass & lens .
DRAWING 3
That is my rough idea, we use second reflector (C) and louvre (H) to replace fresnel glass. It will bend light beam to the LCD panel.
Beam reflector can be made from bended reflective metal sht.
Louvre is some kind like commonly use in office fluorescent lamp cover. It can be made from thin reflective metal fins put together in a row horizontal and vertical with gap in between.
Beam reflector can be adjusted so all the light beam will fall inside the panel and hopely to the lens too. (need 4 units of beam reflector for each side of the panel). Width of the fin and distance between fins should adjusted properly so light spread is minimum.
To make the whole image on the panel fit into proj. lens, we need condenser lens with very short focallength (E1). It will shrink image from the panel to the size not bigger than proj. lens (E2).
http://www.education.eth.net/acads/physics/light-X.htm
case #5.
The shrinking image (G) will captured by proj. lens (E2) and will projected to the screen.
http://www.education.eth.net/acads/physics/light-X.htm
case #3.
DRAWING 4
That will be my Prototype.
Lamp reflector and beam reflector in one continuous metal sht. Clear glass to prevent heat reaching panel.
Not yet think about cooling fan.
That's all guys, sorry for long post.
Please correct me if I am wrong.
See you.
Can I buy a LCD of a Laptop???
Just wondering if I could buy an lcd off a laptop. They sell without software or cables. Can I buy seperate software or connections to get it to work?
Thanks!
Just wondering if I could buy an lcd off a laptop. They sell without software or cables. Can I buy seperate software or connections to get it to work?
Thanks!
laptop LCD
Hi,
I have been reading this forum for 6 months, and I'm very interested 😉
Actually, I own an old laptop (thinkpad 360), whith a color TFT screen, and I wanted to use it to build my onw vido projector.
Actually, I've bought an old OHP (75 Euros, so about 75 USD)
The problem I have is to control the LCD. I found the pinout (P/N : 85G0500, or F8515). This screen can do 640x480@60Hz (VGA resolution), 3*6=18 bits/pixels.
With a logical alalyser, I found the time diagrams, but it's not easy to buils an analog to digital converter, 25.175 MSPS, with a clock recovery from Hsync (PLL ratio : 800 !)
ICS (www.icst.com) does produce a chip (ICS1531), which is an interface between VGA analog output and LCD controlers, with clock recovery, so I am tring to have one to test the digitalization. Moreover, I will need a PLD (altera) to recreate corect Hsync, vsync and blanking signals from original computer signals.
So, it's not very easy to make a projector from a laptop's LCD panel (control part), but I hope it will work 😉
I tried putting the panel over the OHP, and it works fine (a little bit warm : the lamp is a 250W halogen), but its not very useful for the moment (the laptop is an old 486 !)
Hi,
I have been reading this forum for 6 months, and I'm very interested 😉
Actually, I own an old laptop (thinkpad 360), whith a color TFT screen, and I wanted to use it to build my onw vido projector.
Actually, I've bought an old OHP (75 Euros, so about 75 USD)
The problem I have is to control the LCD. I found the pinout (P/N : 85G0500, or F8515). This screen can do 640x480@60Hz (VGA resolution), 3*6=18 bits/pixels.
With a logical alalyser, I found the time diagrams, but it's not easy to buils an analog to digital converter, 25.175 MSPS, with a clock recovery from Hsync (PLL ratio : 800 !)
ICS (www.icst.com) does produce a chip (ICS1531), which is an interface between VGA analog output and LCD controlers, with clock recovery, so I am tring to have one to test the digitalization. Moreover, I will need a PLD (altera) to recreate corect Hsync, vsync and blanking signals from original computer signals.
So, it's not very easy to make a projector from a laptop's LCD panel (control part), but I hope it will work 😉
I tried putting the panel over the OHP, and it works fine (a little bit warm : the lamp is a 250W halogen), but its not very useful for the moment (the laptop is an old 486 !)
Allright now I can start my own experimenting!
I have a 5.6" LCD from PE that I was going to use in my car, than when I found this site I changed my mind and will use it as at temporary LCD for the OHP option. And as luck would have it I work at a university and know the Technongy guy pretty well, and asked him if he happen to have any old OHP's and he said "oh yeah we've got about 4 or 5 that are in need of repair but it wouldn't be worth it for us to do so." So I lucked out and getting one for free!!!
I have a 5.6" LCD from PE that I was going to use in my car, than when I found this site I changed my mind and will use it as at temporary LCD for the OHP option. And as luck would have it I work at a university and know the Technongy guy pretty well, and asked him if he happen to have any old OHP's and he said "oh yeah we've got about 4 or 5 that are in need of repair but it wouldn't be worth it for us to do so." So I lucked out and getting one for free!!!
pask,
I am also very interested in adapting LCD's from laptops, although I would like to use a raw panel without the laptop attached (I don't have a laptop, so I'm limited!). If we could find an inexpensive way to feed a NTSC/PAL signal directly into a LCD panel from a laptop, I think we could get high resolution for cheap. I've searched around, and the best thing I can find is The Cheese Box. I am very uneducated when it comes to chip logic and signal conversion, but it looks like a single chip solution might exist. Do you know what type of circuitry would be inside of the Cheese Box or similar "up-converters"? Any DIY potential? That's probably asking too much, but you seem to know your stuff...it's worth a shot. Great info! Thanks for the link.
Great diagrams, Gunawan! It looks like you've got a great setup. What is the purpose of the louvre? Does it just further align the light?
zark,
I also have some spotlights on my CJ...I never thought about that! They are bright. I might have to give that a try.
gabriel,
I like the computer case idea! I've seen them cheap at surplus stores.
Great ideas, everybody. There is some real innovation surfacing here!
-f4
I am also very interested in adapting LCD's from laptops, although I would like to use a raw panel without the laptop attached (I don't have a laptop, so I'm limited!). If we could find an inexpensive way to feed a NTSC/PAL signal directly into a LCD panel from a laptop, I think we could get high resolution for cheap. I've searched around, and the best thing I can find is The Cheese Box. I am very uneducated when it comes to chip logic and signal conversion, but it looks like a single chip solution might exist. Do you know what type of circuitry would be inside of the Cheese Box or similar "up-converters"? Any DIY potential? That's probably asking too much, but you seem to know your stuff...it's worth a shot. Great info! Thanks for the link.
Great diagrams, Gunawan! It looks like you've got a great setup. What is the purpose of the louvre? Does it just further align the light?
zark,
I also have some spotlights on my CJ...I never thought about that! They are bright. I might have to give that a try.
gabriel,
I like the computer case idea! I've seen them cheap at surplus stores.
Great ideas, everybody. There is some real innovation surfacing here!
-f4
fender4: cj7? oh, man, sweet. love those things. built like a freaking rock. yeah, try out those headlights.
anyways, off to the engineering library. got a list of about 12 applied optics books i'm going to go dig through.
myren
anyways, off to the engineering library. got a list of about 12 applied optics books i'm going to go dig through.
myren
LCD flat ribbons
I inadvertantly posted a totally new thread under 'Everything Else' on the topic below. Wanted it to be on the DIY LCD thread, so I am posting again in here, last time was first time I used the forum, my mistake!!
This question is gonna show how much of a rookie I REALLY am!!! I live in a very small studio apt., so I am opting for the smaller LCD panel as a base, due to the smaller area. I started my project today and ran into a problem. I have a 2" lcd and board from a casio tv. The ribbon is 20 pins. I noticed after putting it in and out a couple times, the very tip on a few pins was missing(the part where they go from wider to thinner, the thin part is what I am referring to). Obviously, now, I get no video signal to the LCD. I can kinda wiggle it a bit, get sound and a jumpy image, but nothing stable. Basically, I was unaware that the plug for these flat ribbons has a pop up locking mechanism on them. I believe plugging it in without unlocking this, is the culprit(not to mention my lack of knowledge). I was wondering, a couple things if anyone can help. Is the ribbon repairable? If so, what is the most feasible way to approach it? It isn't totally destroyed, just a couple bad tips. Any help would be greatly appreciated. Also, say you have an lcd that has a 26 pin ribbon, or mine 20. Would two panels with the same pin numbers have the same pin configuration? As in a Casio lcd with 20 pins, and a Sony with 20 pins, could one work just as well as the other or could they have different pin assignments? So, 26 pins all the same, or 20 all the same...basically, is a pin assignment universal within lcds with the same amount of pins? So if my current lcd ribbon is not repairable, could I use another lcd with 20 pins from a different manufacturer? I can't express how much any guidance would be appreciated. I made some mistakes early on, hopefully, I will gain knowledge from them!! Also, is it possible to extend the ribbons in length? IE, and adapter plug and extra ribbon? If so, where would be a good place to look for these? Thanks in advance, and I encourage those who read this to laugh at my mistake with the pin plug deal, cos I laughed myself!! Can't do anything but laugh, and hope it is fixable! Thanks, Todd
I inadvertantly posted a totally new thread under 'Everything Else' on the topic below. Wanted it to be on the DIY LCD thread, so I am posting again in here, last time was first time I used the forum, my mistake!!
This question is gonna show how much of a rookie I REALLY am!!! I live in a very small studio apt., so I am opting for the smaller LCD panel as a base, due to the smaller area. I started my project today and ran into a problem. I have a 2" lcd and board from a casio tv. The ribbon is 20 pins. I noticed after putting it in and out a couple times, the very tip on a few pins was missing(the part where they go from wider to thinner, the thin part is what I am referring to). Obviously, now, I get no video signal to the LCD. I can kinda wiggle it a bit, get sound and a jumpy image, but nothing stable. Basically, I was unaware that the plug for these flat ribbons has a pop up locking mechanism on them. I believe plugging it in without unlocking this, is the culprit(not to mention my lack of knowledge). I was wondering, a couple things if anyone can help. Is the ribbon repairable? If so, what is the most feasible way to approach it? It isn't totally destroyed, just a couple bad tips. Any help would be greatly appreciated. Also, say you have an lcd that has a 26 pin ribbon, or mine 20. Would two panels with the same pin numbers have the same pin configuration? As in a Casio lcd with 20 pins, and a Sony with 20 pins, could one work just as well as the other or could they have different pin assignments? So, 26 pins all the same, or 20 all the same...basically, is a pin assignment universal within lcds with the same amount of pins? So if my current lcd ribbon is not repairable, could I use another lcd with 20 pins from a different manufacturer? I can't express how much any guidance would be appreciated. I made some mistakes early on, hopefully, I will gain knowledge from them!! Also, is it possible to extend the ribbons in length? IE, and adapter plug and extra ribbon? If so, where would be a good place to look for these? Thanks in advance, and I encourage those who read this to laugh at my mistake with the pin plug deal, cos I laughed myself!! Can't do anything but laugh, and hope it is fixable! Thanks, Todd
Re: Laptops
I wanted to use an lcd panel off a notebook computer just the lcd also no laptop. Is there a controller to connect the lcd panel to vga input running off an geforce 2 card on a PC?
I wanted to use an lcd panel off a notebook computer just the lcd also no laptop. Is there a controller to connect the lcd panel to vga input running off an geforce 2 card on a PC?
fender4,
Actualy, I don't want to use the video projector with a TV source, but with a computer.
But with the 'cheese box', the problem is the same, it gererates a computer compatible VGA signal from composite or VHS. I don't know how this stuff works (I'm trying to check it out at www.epanorama.net, but it seems to be down )
I think this kind of converter is all analog, no digitalization, but I'm not sure at all (I don't think frequencies are the same)
video digitalization chips does exist (maybe ics, or elantec), but it doesn't seem to be easy to convert it to digital VGA (or something like that for laptop LCD panel), you'll probably need a programable logic chip (FPGA : xilinx or altera) to be fast enough.
moreover, it's not easy to find laptop LCD's specifications, i was very happy when I only found the pinout 😉
maybe other manufacurers are more 'open spec' than IBM 🙁
with the cheese box, you'll have to find a VGA panel (I dont know if higher resolutions panels (800x600 for exemple) do display a full size image with 640x480)
I hope you could find laptop LCD panels with the specifications, ant that it's not too expensive (in france, an old panel maybe 800x600, for about 300E, without spec, when you can find a flat display 1024x768 for about 400E, with all the digital electronic)
Good luck 🙂
Actualy, I don't want to use the video projector with a TV source, but with a computer.
But with the 'cheese box', the problem is the same, it gererates a computer compatible VGA signal from composite or VHS. I don't know how this stuff works (I'm trying to check it out at www.epanorama.net, but it seems to be down )
I think this kind of converter is all analog, no digitalization, but I'm not sure at all (I don't think frequencies are the same)
video digitalization chips does exist (maybe ics, or elantec), but it doesn't seem to be easy to convert it to digital VGA (or something like that for laptop LCD panel), you'll probably need a programable logic chip (FPGA : xilinx or altera) to be fast enough.
moreover, it's not easy to find laptop LCD's specifications, i was very happy when I only found the pinout 😉
maybe other manufacurers are more 'open spec' than IBM 🙁
with the cheese box, you'll have to find a VGA panel (I dont know if higher resolutions panels (800x600 for exemple) do display a full size image with 640x480)
I hope you could find laptop LCD panels with the specifications, ant that it's not too expensive (in france, an old panel maybe 800x600, for about 300E, without spec, when you can find a flat display 1024x768 for about 400E, with all the digital electronic)
Good luck 🙂
the problem I have is if I buy a LCD panel off ebay, it doesnt have any connectors. Just the ribbon that comes off of it. So what the heck does this ribbon attach too to let it connect to a vga port on a video card?
If I use a 15inch lcd screen like a viewsonic or something and open it up. That already has all the inputs right? Just open it up but keep the circuitry and vga cable connection right?
Thanks!
How well does a Projection panel work on a over head projector?
Because I just bought a Bell and Howell 301..thanks to myrens suggestions +posts.
So How well does a Projection panel work on a over head projector?
Thanks everyone!
P.S. To get those huge screen sizes, what do u suggest the 15inch lcd or can it be done off a smaller projection panel?
Thanks again!
If I use a 15inch lcd screen like a viewsonic or something and open it up. That already has all the inputs right? Just open it up but keep the circuitry and vga cable connection right?
Thanks!
How well does a Projection panel work on a over head projector?
Because I just bought a Bell and Howell 301..thanks to myrens suggestions +posts.
So How well does a Projection panel work on a over head projector?
Thanks everyone!
P.S. To get those huge screen sizes, what do u suggest the 15inch lcd or can it be done off a smaller projection panel?
Thanks again!
skilzygw,
on the geforce card, the connector is a digital video output, so I think you cant connect it direcly to the panel digital input. 🙂
but there are still problems :
- find the pinout of the digital output and the cable
- I think it's not very easy to make clean high frequancy digital cables
- find the pinout of your laptop's screen
There is a solution for the two first problems : some flat TFT screens can accept digital VGA, so if you can find a cable ... 😉
on the geforce card, the connector is a digital video output, so I think you cant connect it direcly to the panel digital input. 🙂
but there are still problems :
- find the pinout of the digital output and the cable
- I think it's not very easy to make clean high frequancy digital cables
- find the pinout of your laptop's screen
There is a solution for the two first problems : some flat TFT screens can accept digital VGA, so if you can find a cable ... 😉
oh thats right your talking about a DVi out right? Well may radeon card has that i can just swap it. Would this help?
tragedy
Hello,
While my wife and I were visiting my mother-in-law, which is tragedy itself, my mini-fridge caught on fire and burned away most of my shop. Aside from my tools, the only things to survive were my weight bench and a huge oil painting of an orchid( it came with the house). The good news is that the rest of the house wasn't affected and my projector was in the living room. The night before, we had watched The Phantom Menace, and I couldn't believe that I had built something as cool as that. I solved my fluid problem by filling the air space with mineral oil. It was very clear and thick enough that it didn't bubble when it was shaken.
As I was giddy with excitement at seeing Darth Maul's face blown up to the size of a cow, my wife was bitching about "all of the little squares". I admit that when you concentrate on the pixels, they are a bit distracting, but when you let it go and just watch the damn movie, its wonderful. It even makes the movie sound better because the sound position more closely matches the screen image. And as an added bonus, I thought I would have a problem controlling the rest of my gear because the screen covered everything but the three front channels, but the Sontara samples actually passed the infrared signals from my remote controls.
Except for losing the rest of my sample screen material, my plans, all the pictures I had taken, four sheets of 1/2"- 4'X8' plywood, and one mini-fridge, I am very happy.
Thanks,
Joel
Hello,
While my wife and I were visiting my mother-in-law, which is tragedy itself, my mini-fridge caught on fire and burned away most of my shop. Aside from my tools, the only things to survive were my weight bench and a huge oil painting of an orchid( it came with the house). The good news is that the rest of the house wasn't affected and my projector was in the living room. The night before, we had watched The Phantom Menace, and I couldn't believe that I had built something as cool as that. I solved my fluid problem by filling the air space with mineral oil. It was very clear and thick enough that it didn't bubble when it was shaken.
As I was giddy with excitement at seeing Darth Maul's face blown up to the size of a cow, my wife was bitching about "all of the little squares". I admit that when you concentrate on the pixels, they are a bit distracting, but when you let it go and just watch the damn movie, its wonderful. It even makes the movie sound better because the sound position more closely matches the screen image. And as an added bonus, I thought I would have a problem controlling the rest of my gear because the screen covered everything but the three front channels, but the Sontara samples actually passed the infrared signals from my remote controls.
Except for losing the rest of my sample screen material, my plans, all the pictures I had taken, four sheets of 1/2"- 4'X8' plywood, and one mini-fridge, I am very happy.
Thanks,
Joel
Help me decide please!
I am so excited. Can't wait to get everything and test it out. The second I do I'm gonna upload pics and everything. I have already ordered the projector. Its a bell and howard 301. Now I need your help in deciding whether a lcd panel is good enough for me.
I was reading Myren's posts and he said how he got huge screen sizes. Some thing like 12 feet. I would love this! But with a regular lcd panel off ebay what sizes can I get? The lcd panels are 1/3 the price of a 15inch lcd monitor. That and the fact that I dont have to open it up and void my warranty if I mess up.
So how big and clear a screen size will I get off a lcd panel? I know I'm losing hte resolution but I dont really have the extra money to be tinkering and ripping open a 15inch lcd monitor. So what can I expect with an lcd panel?
Thanks for all the great input!
I am so excited. Can't wait to get everything and test it out. The second I do I'm gonna upload pics and everything. I have already ordered the projector. Its a bell and howard 301. Now I need your help in deciding whether a lcd panel is good enough for me.
I was reading Myren's posts and he said how he got huge screen sizes. Some thing like 12 feet. I would love this! But with a regular lcd panel off ebay what sizes can I get? The lcd panels are 1/3 the price of a 15inch lcd monitor. That and the fact that I dont have to open it up and void my warranty if I mess up.
So how big and clear a screen size will I get off a lcd panel? I know I'm losing hte resolution but I dont really have the extra money to be tinkering and ripping open a 15inch lcd monitor. So what can I expect with an lcd panel?
Thanks for all the great input!
skilzygw-
It all comes down to the size of your room, the level of light hitting the panel. If you had a 1" screen on an OHP with a bright enough lamp, enough focusing adjustment, and enough distance between it and the screen, you could get a 12" image(correct my potential wrongness here people). Disadvantages to that are the fact that you're not using a large portion of your light(unless you alter the reflector(s) inside the projector to concentrate the light on the small panel), and you need to pull the projector waay back from the screen. With a 15" you're covering the entire top of the projector, which means the light is being used more efficiently, and you will get a larger image relative to the projector's distance from the screen.
Hope that helps!
Phil
It all comes down to the size of your room, the level of light hitting the panel. If you had a 1" screen on an OHP with a bright enough lamp, enough focusing adjustment, and enough distance between it and the screen, you could get a 12" image(correct my potential wrongness here people). Disadvantages to that are the fact that you're not using a large portion of your light(unless you alter the reflector(s) inside the projector to concentrate the light on the small panel), and you need to pull the projector waay back from the screen. With a 15" you're covering the entire top of the projector, which means the light is being used more efficiently, and you will get a larger image relative to the projector's distance from the screen.
Hope that helps!
Phil
Sorry to hear about your loss, jquinn. That's terrible. I hope everything works out ok with that.
pask,
Thanks for the info. Every time I have looked into using a standalone laptop LCD for this purpose I come up empty. There seem to be too many obstacles (different pins, different manufacturers, different standards, etc.). I'll post if I find anything else.
If anyone is looking for lowering the temp at the LCD, take a look at this:UV filter sheets. Pretty interesting, and just $12 for a fairly large sheet. Hmmm, this might make using some of the higher watt bulbs more practical.
Hey zark, do you have any more screenshots available?
-f4
P.S. Myren: 1984 CJ-7. At least 150,000mi on it and running strong.
pask,
Thanks for the info. Every time I have looked into using a standalone laptop LCD for this purpose I come up empty. There seem to be too many obstacles (different pins, different manufacturers, different standards, etc.). I'll post if I find anything else.
If anyone is looking for lowering the temp at the LCD, take a look at this:UV filter sheets. Pretty interesting, and just $12 for a fairly large sheet. Hmmm, this might make using some of the higher watt bulbs more practical.
Hey zark, do you have any more screenshots available?
-f4
P.S. Myren: 1984 CJ-7. At least 150,000mi on it and running strong.
Time to take the plunge.
I've got my eyes on a OHP on ebay, and I'm probably going to buy a KDS Rad5 LCD monitor. I just hope I can take it apart without marking the matte-silver case.. 🙂
I've got my eyes on a OHP on ebay, and I'm probably going to buy a KDS Rad5 LCD monitor. I just hope I can take it apart without marking the matte-silver case.. 🙂
Axeman thanks for all the great answers. I just bought a projector on ebay, great site.
Whats the average screen size of one of those lcd panels example..nView Z115 LCD PANEL?
The projector I bought is a bell and howard 301, do you know anything about it? Is that bulb bright enough?
Hey you suggested focusing the light, is there any way to do that without mechanically altering it? Like can I put card board around the screen to the light on top?
Thanks.
Whats the average screen size of one of those lcd panels example..nView Z115 LCD PANEL?
The projector I bought is a bell and howard 301, do you know anything about it? Is that bulb bright enough?
Hey you suggested focusing the light, is there any way to do that without mechanically altering it? Like can I put card board around the screen to the light on top?
Thanks.
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