Has anybody tried these plans?

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#3
That's what I thought, I noticed that there was no light passing through the lcd. The lights would probably end up just blocking out what litle picture you would get from useing the lcd's backlight. I was looking for some simple plans with minimal materials, because I am living in Germany now and not being native to germany, I don"t know were to go to get stuff. I still might try these plans since i could probably use cardboard box as a temporary box anmd hook this stuff up in like 30 minutes. I was wondering if it would be possible just to use a regular 150 watt bulb and place it in like a box thats two feet long and as tall and wide as my ps1 lcd and to put the ps1 lcd in the middle of the box with bulb at the back of the box and a magnifying glass as the lens at the front of the box would that work, and what kind of result should I expect from a set up like that.
Cheers!
 
#4
I looked up the schematics for these types of projector and i think these plans might work.
 

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#5
Yes, and no.

It 'works'. you will project some image onto the wall. whether or not you will see it is another question. problem is that the light will be greatly reduced after passing the LCD twice, let along it is rather difficult to properly gather lights to the projection lens.

oh, by the way, you can look at how 'reflective OHP' works
 
#6
Reflective isn't going to work. LCD panels are transmissive. If they were reflective, like paper, they would look better and brighter in sunlight. Take a laptop outside and look at it in the sunlight. That's what you're trying to do with a reflective projector. Once the light goes through the panel, then tries to come back, the reflection off the surface of the panel is stronger than the light coming back through it. There are some specific LCDs that are supposed to work in bright light, transflective displays. Those might have a better chance of working, though it would still be much worse than a normal projector setup. But you're not going to find a monitor that uses one.
 
#7
sethmeredith said:
Has anybody tried the plans at the bottom of this page that use two regular light bulbs It looks way too easy, I was wondering if anybody could tell me what kind of picture quality I could expect from these plans.
Thanks
Click to expand...

I posted some replies to this as it has been asked before (1 and 2 years ago)

this is a simple copy projector for cake decorations
you put in a drawing and this is projected on an iced cake, the baker follows the contours of the drawing with color/ising etc...

I had a proff. machine and tried it with an lcd, it did work, but only when the room is extremely dark and to a distance of about 4 ft, not further. the bulbs I used wher 2 * 150 watts

Jean-Pierre
 
#8
sethmeredith said:
I looked up the schematics for these types of projector and i think these plans might work.
Click to expand...

If you modify the plans a bit, it should work fine. I've attached a quick adjustment that should work better. I didn't include any fresnels or accurate mirror angles in the image, it's just a rough outline

😉
 

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#11
Where to get your stuf

Dear Sethmeredith.

Ther are two online stores in Germany that sell everything you need for your projector project. I've had good experiance with exclusiv online (http://www.exclusiv-online.com). I think to remember they are based in Filderstadt. Isn't that near Stuttgart? Anyway they have a 150 watt light source preassembled that should work fine with a psone screen. The other store is gadaffy (http://www.gadaffy.ch.vu/). They both have english translations on there site and I suppose they speak English as well. Exclusiv also has a forum with (some) English posts. Good luck with your project.
 
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