----- Original Message ----- From: <dave6134@xxxxxxxxxxx> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxx> Sent: Sunday, April 29, 2007 10:47 Subject: RE: [SPAM] Re: [SPAM] data projector lamps : At 05:13 PM 4/28/2007, you wrote: : >Elson : > : > .................Of course there is no comparison to original : > chromes projected. : >AZ : : Of course not.......... yet. there is talk about a laser based projection system for the future - this could easily render contrast ratios as high or even much higher than projection techniques for slides. There need be no limitation on the dimensions or pixel size of such a system either .. so a 600x800 pixel image could be rendered a foot across or 6 feet across with no loss of light, and a 20,000 x 40,000 pixel image could be projected at 6 feet across or 100 feet across - also with the same light levels :) they've got to get the cost of a blue laser down a lot first - Maybe the halving crystals they use to create green lasers will be the way to go, who knows. I'd guessed driving the lasers will be done with voice coils shifting mirrors - my attempts on two axis just made pretty patterns though :( Thinking more, they'll probably aim for something like spinning prisms as in a laser printers One thing is for sure, they should be light and small k
