A screen with a gain of greater than 1.0 might seem like magic, but all they do is redirect the light. All the ratings are for a specific viewing position. None of these screens reflects more total light than it receives. A mirror might be considered a Super-Hi Power screen, but the hotspotting is horrible.
Dan, if the battery is the same one I'm thinking of, they were used in Polaroid film packs to power the motor that spit out the 'instant' picture.
They were about 4" x 4". They only made a few "screen size" 4ft x 8ft ones for use with the Hubble telescope before it went digital. It was too costly for the Shuttle to collect the pictures it spit out.
Originally posted by Jason Turk They require a 220volt dedicated line. I usually recommend a 50amp circuit on them as well. Call an electrician and have him disconnect your electric oven and tie that line into the screen.
ok everyeone is making jokes but no one said how can it make more light without any additionnal energy. The screen cannot create more light out of nowhere so it has to come from somewhere. If not from batteries or from plugged in the wall then my guess is solar power. It uses the energy from the light of the projector and creates more light with it, that way its more light and therefore the name high power because some projectors are high lumens (1000+).
My best scientific guess.
 Solar powered would also explain why it costs so much.
I can't tell if you're serious or not, but the High Power does not make more light. No screen fabric does. All it does is focus the light that's already there, so that more of it is directed towards the seating position, and less of it is scattered around the rest of the room.
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