AVS Special Member
Join Date: Jul 2000
Location: Florida and West Virginia, USA
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None are the current 720p 3D capable DLP projectors are directly compatible with the 3D video sources that are coming out later this year. Rather they are designed for use with PCs for displaying 3D computer based presentation graphics and video games. Thus while they support 3D they are not directly intended for 3D home theater use. The Blu-ray 3D standard was just completed in very late 2009 and as far as I know there is no currently projector that can directly accept a dual 1080p/24 video stream and apply processing to display alternating right/left images at 120 Hz or higher, as included in the new Blu-ray spec. Also for the planned 3D satellite (e.g., Directv) channels, the projector would need to apply processing to accept side-by-side, horizontal compressed images then generate the alternating right-left images at a frame rate of at least 120Hz total. However, these projectors assume the processing is being done by the external source device (e.g., a PC), but this is not a good assumption for 3D video sources since they rely on the 3D HD display doing the required processing. Perhaps, one or more of these projector manufacturers will in the future offer an external processor to do all the necessary 3D video processing magic, but none have announced any plans yet.
So that leaves us with just the LG (1080p - LCoS - dual light engine - polarized glasses - requries silver screen for 3D - rumored to retail for $10K) 3D projector as the only home theater front projector that has been announced (at CES 2010) so far. However, I do believe the most cost effective home theater 3D projectors coming to market over the next year will be DLP based and using LCD shutter glasses. 3D projectors capable to providing a properly calibrated video image must have a lot higher wattage light engine than a 2D projector since the combination of the additional light loss within the projector and by the required glasses (either using the LCD shutter glasses or polarized glasses) will result in an image that is no more than approx. 25% as bright as a 2D image would be from a similar 2D projector. The low cost 3D DLP projectors get their extra lumens of light output (just as many business projectors do) in part by displaying an image with far too high a color temperature which isn't much of an issue for business graphics or games, but would be unacceptable for many home theater enthusiasts. I would expect to see several true home theater oriented 1080p DLP projectors announced by no later than the CEDIA show in Sept. 2010 and arriving at dealers by late 2010/early 2011.
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