Although I've always been a fan of three-primary devices, I must admit that the new Philips design of the scrolling prisms (last page of article) sounds like it will overcome many of the design issues of single-chip DLP (light output and rainbow artifacts).
I think I have a phobia against all of those mechanically moving parts, but if it can output 200% more light than a DLP using the same lamp, and eliminates the rainbow artifacts, I say 'bring it on'.
re: "Am I the only one who wonders about the long-term viability of rapidly moving, highly synchronized parts?"
No- I have the same concerns over these Rube-Goldberg-esque approaches to single-display element projectors.
I couldn't even count the number of prisms, lenses, and polarizers in that proposed single chip DLP with the spinning prisms! All those optics add up to cost and light contamination (transmission losses, dust, etc), not to mention all those silly spinning, moving parts, which look like something out of Chitty-Chitty-Bang-Bang or Willy Wonka's Factory http://www.avsforum.com/ubb/wink.gif .
In the short run (maybe even lon run), higher yield LCOS and tried-and-true transmissive LCDs with discrete R-G-B (or Y-U-V) display elements will probabaly be the meat-and-potatoes projectors for most Ht enthusiasts. With LCD's like the Sanyo 21N, 18N, and PLV60's of the world- and their near-term successors and competitors- the contrast levels and brightness, combined with LCD's already excellent color characteristics, will probably satisfy the 95th percentile projector customers out there.
Unfortunately, the loudest/most frequent posts are from the last 5% of the projector customer distribution, and someone could get the impression that no digital projector is *any good* http://www.avsforum.com/ubb/wink.gif .
[This message has been edited by Rgb (edited 10-09-2001).]
Interesting article indeed. I think the main problem with today's projectors is the heat generated from the lamp. I've actually seen a LCD panel burn up, it's a scary sight. This extreme heat will wear down key components and it is very expensive to replace them. New technology is needed that can reduce the heat source but still generate bright pictures.
Maybe i am missing something but why can't a laser diode be used as a single point light source?
I think the GLV device pioneered by Silicon Light Machines and now licenced to Sony does use lasers as their light source. But Sony has yet to produce a pro or consumer GLV device. Silicon Light Machines used this technology in creating displays for flight simulators for the military.
So it's the poor response time of the LCD panels in my projector (Sony 400Q) that causes the smearing that makes my head swim, or perhaps that's just one source of the motion problem. In any event, I've glad to know about this.
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