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Anyone seen the DNP data screen?

386 Views 5 Replies 2 Participants Last post by noah katz, Mar 1, 2000

Christopher Calder

Discussion Starter · Mar 1, 2000

Has anyone seen the new DNP rear projection data screen with a gain of 1.5? Is it better than their high gain screens with a gain of 3.5? Which would be better for a 120" diagonal 4:3 screen with a 1500 lumen rear projector. I want to be able to watch it in daylight with lights on.

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noah katz

· #2 · Mar 1, 2000

Chris,

As a general rule higher gain screens are better at rejecting ambient light than lower gain ones because the directionality works on both reflected and transmitted light.

I just checked their site and don't see anything described as a "data" screen. If you mean their "graphics" screen, they say it's only available up to 87".

If there is a new "data" screen, coould you please direct me to the information you found? I'm going to be doing RP as well.

Thanks

Noah

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Christopher Calder

Discussion Starter · #3 · Mar 1, 2000

The Draper IRUSâ€”Infinite Resolution Uniformity Screen is what I was referring to. I have heard it also called a "data screen" and I believe in is made by DNP. It is available up to 120" diagonal. Their DNP "Diamond screen" has a gain of 3.5. I wonder at 120" size if it would distort the image at the edges if veiwed from 1.5 times screen width which would be 1.5 times 97" = 12.125 feet.

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noah katz

· #4 · Mar 1, 2000

Ah, I've got a sample of the IRUS that I'll be trying with Mark Foster's D-ILA on Thursday evening.

I'm not sure what you mean by distorting; the big concern for me is hotspotting w/o a Fresnel. The Diamond screen has one so it should be fine (but at many times the price, I think).

Noah

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Christopher Calder

Discussion Starter · #5 · Mar 1, 2000

Hotspoting was what I was talking about. What is the price difference between the 3.5 gain DNP screen and the new 1.5 gain screen? Sounds like your saying the 1.5 gain screen is cheaper.

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noah katz

· #6 · Mar 1, 2000

Chris,

If I remember correctly (Dalite use to list prices but don't anymore), the Diamond screen in your size was >$10K. I'm guessing the IRUS will be about $3-4K. The cost difference is because a Fresnel is a giant lens with finely pitched profiled grooves, whereas the IRUS and other diffusion screens are essentially an amorphous coating on a substrate.

Noah

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