I want to show you guys something that was quite remarkable to me. I had considered early on the placement of a screen such if I was in bed, I could watch TV/Movies or from a seating area on the opposite side of the screen. I got a whim earlier and grabbed this opaque white material that had been left over from a flourescent kitchen ceiling fixture.

When I projected on it, it had a really nice image ... on BOTH sides! I wonder what it is, and if I can find a sheet of a nice size to use in this manner. Assuming one uses either a transcoder or a media pc, I am sure reversing the image on the fly based on where you wanted to sit would be a cinch.

Here is a pic of the material alone and one with the chair and material setup I used with projection.

Here are a couple of front and back shots. I am still not the greatest at consistent exposures, moving the camera, etc. My impression from looking at the image was that the front side had a nice crisp image, and the backside only very slightly de-focused. Very acceptable though.

A couple of other comments. The material rendered my colors well ... any color shifts are due to my improperly tuned new projector. Also, as you can see, the off-center viewing was fantastic.

Do you know what material it is i can see if a neerby plastic supplier has it and test a large piece.

joe

Not a clue, Joe. It came with the house when we bought it, and was the diffuser for the kitchen flourescent. It is a rough matte on one side, and shiny gloss on the other. The matte side doesn't appear to have a pattern to it ... just random small texturing. I will probably take a trip to HD or Lowes later and see if I can find something similar.

that's very similiar to what i recommend for black flame and xtreme maxxmudd screens.

it is not opaque white... rather it is translucent white. you can find it at your local plastics or
sign distributor. it is used for backlighting business signs using flourescent lighting.

ask them for translucent white #2447 (business sign standard) or #2067 which has even more translucency.

What's interesting about it is that it actually takes away from focus, but in doing so, seems to blend the pixel image a bit. With my 1024x768 Eizo blown up so big, I can see the bit between the pixels. Not sure if the blending is a positive or not. Good for movies, bad for using the screen in text mode?

that's why i don't use it bare all by itself... due to lack of contrast and detail.

the same thing can be done with respect to pixelation by defocusing the image just slightly.

PB, what would you recommend for a 4:3 screen about 7.5ft by 6.5ft in a room where my wife likes to work on her computer while watching tv or movie with a little bit of light over her to see the keyboard? Maybe some options for cloth over substrate and for a DIY paint combo?