New miracle Vutec flat screen---gain 4.5 no hot spotting? - AVS Forum
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post #1 of 5 Old 01-15-2002, 02:51 PM - Thread Starter
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Anybody know anything about this Vutec SilverStar?

http://www.vutec.com/press.html
(about 1/4 of the way down the screen)

I was asking a guy at Vutec whether there were other surfaces available for there curved screens (something with a lower gain than the silver) and he said no, but he mentioned the new SilverStar. He claimed no hot-spotting but I couldn't get an explanation from him as to how it worked. Available in 60-90 days.

Thanks,
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post #2 of 5 Old 01-16-2002, 09:12 AM
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Unfortunately, the laws of nature prohibit a flat, 4.5 gain screen from having no hot-spotting. There is nothing even Vutec's marketing department can do to change that fact :D. To be fair to Vutec, the press release does not mention hot-spotting but makes claims of "realistic color".

With increasing gain the viewing cone WILL become progressively narrower and hot-spotting and color shift WILL become more and more evident.
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post #3 of 5 Old 01-16-2002, 10:25 AM - Thread Starter
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Unless...unless the surface was comprised of some sort of micromirror array with the "mirrors" being angled appropriately for their location on the screen---sort of a Fresnel mirror. Of course the mirrors would be whatever gain we chose them to be...what do you think? A manufacturing nightmare? :)

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post #4 of 5 Old 01-16-2002, 10:47 AM - Thread Starter
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I've got it! The "mirrors" could be magnetized particles with a flat surface (the business end). They would be aligned in a temporarily liquid substrate by applying appropriate magnetic field, and then the substrate would be hardened.

Any sort of curved screen shape could be mimicked by altering the shape of magnetic field that was applied.

Of course, we obviate the focus problems attendant to using a curved screen.

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post #5 of 5 Old 01-17-2002, 04:17 AM
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Robin,

You are quite right. If someone is able to produce a screen material with a gain axis varying over the screen surface, it would be possible to get a high gain material to behave like you propose. Naturally, every screen would have to be tailor-made for a specific setup so the practicality might be a bit restricted. Paying the equivalent of a Sony G90 for a screen may put some buyers off ;).

This would be THE high-tech screen. Perhaps you should patent your idea or take it to Don Stewart or even Captain Janeway of the Starship Enterprise :D.
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