Hi,
I decided the direct-reflection method probably wasn't going to work so great so I dismantled my LCD so I can pass light directly through it (like with an OHP). My problem is that no light source seems to work and produce a picture except for it's own backlight!
Could this be a polarizing issue?
Thanks
I decided the direct-reflection method probably wasn't going to work so great so I dismantled my LCD so I can pass light directly through it (like with an OHP). My problem is that no light source seems to work and produce a picture except for it's own backlight!
Could this be a polarizing issue?Thanks
As I understand it, you need an assembly of properly proportioned fresnel lenses to spread the light evenly.
I was testing it with a flashlight 🙂
Then I put it up to my window and tried to use sunlight but that didn't work either 🙁
Then I put it up to my window and tried to use sunlight but that didn't work either 🙁
Uh... A flashlight? You're joking, right? A flashlight doesn't begin to produce the amount of lumens needed to project even a very dim image. LCDs swallow a lot of light. To get any kind of image you'll need some type of halogen or metal halide, 150w or more. Most use 250w metal halide.
....oh.
I guess my two-150-watt-bulb home made ghetto lightsource won't even be enough to produce the faintest image on the LCD panel (not even projected)?
I guess my two-150-watt-bulb home made ghetto lightsource won't even be enough to produce the faintest image on the LCD panel (not even projected)?
CAREFUL
Be careful to ventilate your LCD so you dont burn it with the heat of the light source (Light bulbs in your case 🙂 ) !
Be careful to ventilate your LCD so you dont burn it with the heat of the light source (Light bulbs in your case 🙂 ) !
umm.. standard incandescent house lightbulbs 
I would've thought would be able to see an image on the LCD while shining the flashlight through though. Even sticking it up to my window.. nothing worked 🙁
I would've thought would be able to see an image on the LCD while shining the flashlight through though. Even sticking it up to my window.. nothing worked 🙁
Incadescent bulbs=No Good. I experimented by sticking a 150w incadescent "spotlight" in my OHP(looks VERY bright, almost hurts to look at), and no image whatsoever. You need Metal-Halide or Halogen.
aiight, sounds good 🙂 (in the sense that I now know my LCD isn't weird or defective)
I suppose I'll have to buy an OPH now. My dad really has a way with making me feel guilty when spending money on these sorts of things though 🙁
I suppose I'll have to buy an OPH now. My dad really has a way with making me feel guilty when spending money on these sorts of things though 🙁
Question
What LCD did you use? Was it easy to dismantle? I am looking for a good option, so would like to know what did you use and how easy/difficult was it to dismantle it...
Thanks!
What LCD did you use? Was it easy to dismantle? I am looking for a good option, so would like to know what did you use and how easy/difficult was it to dismantle it...
Thanks!
I used a Pyle 5" plvw5mn screen. I'd say it was pretty easy to dismantle, just a matter of removing a few screws and popping the metal stuff off. As with any LCD screen, you must be careful not to tear the ribbon connector though.
EDIT: I should also warn you that the image quality sucks! I got it for $45 though so I'm not complaining 😉
EDIT: I should also warn you that the image quality sucks! I got it for $45 though so I'm not complaining 😉
You might be able to pick up an OHP for cheap locally. Just look around, people often have thme at yard sales, and you can sometimes get them at govvernment surplus sales if there's any in your area.
I noticed something a bit strange. If I stick the LCD infront of my CRT (with a white screen on the CRT), I can sorta make out a picture on the LCD but only when viewed from a very obtuse angle. Anybody know why?
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