Why no 2000 Lumen DLP projectors ? - AVS Forum
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post #1 of 3 Old 04-19-2001, 12:29 PM - Thread Starter
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I have a feeling that 1000 lumens is the typical lumen limit for 1 chip DLP projectors because of the overly hot whites that can occur from this reflective technology. Can the more learned expound on this topic ?
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post #2 of 3 Old 04-19-2001, 05:38 PM
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DLP does not cause overly hot whites. In most cases, it's due to the fact that they were designed for presentation (clear section on the wheel).

Have you seen one of the theatre DLP projectors they used to project Toy Story II, Star Wars Episode 1, etc.? I can assure you they are way more than 2000 lumens.
You can also purchase 3-chip DLP projectors from NEC/Christie Digital/etc. that are a lot more brighter than 2000 lumens.

As for 1-chip, I don't think it's going to be easy because 2/3 of the light must be absorbed by the color-wheel at any given time. It'd be impossible to make it too bright.

3-chip is the way to go, but it's so darn expensive.... http://www.avsforum.com/ubb/frown.gif
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post #3 of 3 Old 04-19-2001, 08:14 PM
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I'm not going to challenge the accepted thinking that
it's the clear segment in the color wheel that causes
hot whites. But it's puzzling to me that my DL450 clone
did not have hot whites even though it has the clear
section in the wheel. It also did not exhibit crawlies
and that too has been blamed on the clear section in the
color wheel. Can anyone explain this?

Bob Wood

~~The Sultan of Cheap~~
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