For 3D lovers who already own a legacy 720p 3D-ready DLP video projector such as Optoma's HD67, which is incompatible with the newer 3D Blu-ray spec, Optoma has a cheap solution to get you connected to 1080p 3D sources.

The new 3D-XL Projector Adapter is the first converter box that allows 720p 3D projectors play 1080p 3D Blu-ray discs, 3D PS3 console games, and 3D broadcast content.  It works by accepting 1.4a HDMI signals output by 1080p 3D players and down converting it to a 1.3 HDMI signal that current 720p 3D DLP projectors can display.  The catch for the 3D-XL is that these legacy projectors must be those that operate at 120Hz refresh rates.

The 3D-XL has two HDMI 1.4a inputs, 1 USB port and 1 RS232 port, and can accept common global video inputs and video formats up to 1080p (HDTV, EDTV, SDTV, NTSC, PAL, SECAM).

The 3D-XL weighs 2.4 pounds and comes with a one-year parts and labor warranty.  And don't forget, to watch 3D with a single projector system, you'll also need Optoma's DLP-Link shutter glasses, which are apparently included. Optoma's 3D-XL has a suggested retail price of $399 and will be available in January, 2011.

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