Table Top Projection Project

  • Thread starter jearl
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  • #1
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Main Question or Discussion Point

Hi,
I'm trying to create a projection on a flat surface by using an LCD screen extracted from a flat panel monitor, a sheet of translucent fine grain paper, a Fresnel lens and an LED light source. The purpose is to project a focused image on the paper for display proposes.

The idea is to have the image projected from underneath the paper or rear projection. I'm wondering if anyone here would know if the light from the source passing through a Fresnel lens then through the LCD will produce a clear image on the paper. At first I thought that this might fall in the category of lens effects but I'm not sure. I've attached a descriptive image of the proposed set up.

I know this may seem impractical but, this setup would keep my cost down for the project.

Thank you for your help.
 

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  • #2
Khashishi
Science Advisor
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You probably want to put the Fresnel lens between the LCD and the paper. You don't want to focus the light source, but the image of the LCD. If you know the focal distance of the lens, you can easily figure out what distances you need.
 

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