Ok thanks for all the cool info guys, so I have an idea I want people to add to...Has anyone tried set up with a monitor or Tv on its back under an overhead projector that has been dismantled???
Greets From Australia 😎
If I'm not misunderstanding.. you're saying to use the TV/monitor's light source to project it through the OHP? This is the kind of thing those 150" TV scams are trying to do. There is not near enough light coming out of a monitor/TV to project an image through the fresnel etc.
If you read around, you'll see one of the popular ideas is similar to that, to take apart an LCD monitor and use the OHP's light (which is designed to project onto a wall) as the source to throw the image onto the wall. There are variations of course, using custom light sources, or lcd projection panels.
Search the forum, there's all the information you need to make your own setup. Whether it be custom enclosure, splitting fresnels, retrofitting light sources etc.
Good luck!
-rep
If you read around, you'll see one of the popular ideas is similar to that, to take apart an LCD monitor and use the OHP's light (which is designed to project onto a wall) as the source to throw the image onto the wall. There are variations of course, using custom light sources, or lcd projection panels.
Search the forum, there's all the information you need to make your own setup. Whether it be custom enclosure, splitting fresnels, retrofitting light sources etc.
Good luck!
-rep
Okey I have tried just the thing you described, heres a Quick Project take off the arm of your Overhead projector and hold it up to your TV at various distances from the TV, it works But its dim interesting thing to just mess around with tho
Hey....I thought that whacking a tv under the OHP fresnel and using good optics in the OHP arm might be a better result than those scams selling just a fresnel....(which i tried and it was shiite)....
Found some good semi reflective silver material used in making cold storage insulation covers used in shipping....Could be good for a screen....
We have a place here in sydney called 'Reverse Garbage' which carries reject materials and plastics etc from local companies.....good source for bits and pieces to make stuff....
Thinking of heading the mini LCD route in a slide projector set up....some good info in some of the other threads here....
Found some good semi reflective silver material used in making cold storage insulation covers used in shipping....Could be good for a screen....
We have a place here in sydney called 'Reverse Garbage' which carries reject materials and plastics etc from local companies.....good source for bits and pieces to make stuff....
Thinking of heading the mini LCD route in a slide projector set up....some good info in some of the other threads here....
ohp & 5" lcd screen.
yeah this is what i was thinking of doing, but everyone says that it is not bright enough, well at least you get pure black from it, not grey due to too much light.
anyway say lcd screen on it's back with an extendable cuboid box and the lens and mirror from an overhead projector arm at the other end of the cuboid box, the box would contain any light, and you ain't gotta take the screen apart.
probably only work in total darkness though, but most of the other ideas have to run in the dark anyway.
it is so much simpler anyone could do it. if anyone has actualy done it let me know the result. (done it but with the box, not just holding a magnifier over the top of the screen, that way you wouldn't get much light at all.
yeah this is what i was thinking of doing, but everyone says that it is not bright enough, well at least you get pure black from it, not grey due to too much light.
anyway say lcd screen on it's back with an extendable cuboid box and the lens and mirror from an overhead projector arm at the other end of the cuboid box, the box would contain any light, and you ain't gotta take the screen apart.
probably only work in total darkness though, but most of the other ideas have to run in the dark anyway.
it is so much simpler anyone could do it. if anyone has actualy done it let me know the result. (done it but with the box, not just holding a magnifier over the top of the screen, that way you wouldn't get much light at all.
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