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John,
...where do I buy one? What brand name? How many lumens? I note
that most of the TFT all-in-one projectors come in around 500-700
lumens. An ordinary overhead provides 2000 lumens, a high-intensity
overhead provides 3000-4500 lumens. Then the inverse square law
bites you as you move away.
Seriously, who makes these DLP thingies? We're going to build 3
labs here and require projection technology for them that I don't
think has been invented yet. I'd be delighted to be wrong; it's my
usual state :^).