Tom Norton

The Smart Crystal Pro polarization modulator from a new (to us) company called Volfoni (which also makes both active and passive 3D glasses) can take your single chip active glasses DLP 3D projector and turn it into a passive glasses 3D projector. The brochure says it can do this for any 3D single lens projector, but the device has only been verified effective on DLPs.

What it does, in effect, is to substitute rapidly alternating polarization of the filter, which is positioned in front of the lens, for the switching of active glasses. You'll need a connection from the sync transmitter output in the projector to the Crystal Pro to make this work, or alternately DLP Link in the projector (DLP Link is a process that uses rapid interframe bursts of light from the DLP projector that normally triggers active glasses). (If your projector has neither, that is, no DLP Link and an on-board sync transmitter, it will not work, as I understand it. You'll also need a screen that preserves polarization. Estimated cost will be $1500 for the Crystal Pro itself, or $2000 for a package including both the Crystal Pro and a slide that can automatically move the polarizer out of the way for 2D material.

Toshiba was showing its latest prototypes of glasses free 3D. In comparison to last year's demos, the results were much improved. The secret appears to be the use of a 4K LCD panel, which ups the convergence available to each eye—much like the new, jumbo 4K set shown by LG appears to improve the (passive glasses) 3D performance of that set. If you’re watching 3D alone, the set tracks your head position and adjusts the picture to provide optimum performance. In a group showing, the 3D works properly only in 9 individual regions across the front viewing area. A small circular bug at the top center of the screen (visible in the photo) tells you if your head is in a hot spot for 3D. Toshiba expects to have sets in stores in late 2012. But the use of a 4K panel suggests that the first such sets will be expensive, so I wouldn't hold off purchasing a 3D set hoping to have a cheap, glasses-free alternative real soon now.

With Internet connectivity, you can now play competitive video games over the Web. How long before such games become championship spectator sports we can watch passively on HDTV, bringing us full circle? With 300 channels, maybe they have already and I’ve just missed it.

While not as svelte as the company’s 55-inch OLED prototype discussed below, LG’s new lineup of Smart LED/LCD sets is still just a bit over an inch thick with a 1mm thick bezel framing the screen. The top of the line Nano sets, available several sizes up to 84” in size. The Nano designs are full backlit local dimmers, utilizing LEDs impeded into t thin membrane that allows for superior backlit local dimming in a thinner design. LG’s magic remote has been improved, allowing not only pointing but also both gesture and voice recognition. And like all the HDTV manufacturers at the show, LG’s Smart technology offers further enhancements in convergence and connectivity with Web-based sites and features.

That 84” model is unique in that it is a 4K design. Despite the lack of 4K sources, 4K offers significant advantages for LG’s passive glasses approach to 3D. Specifically, it can present a full 1920 x 1080 resolution to each eye, unlike the half vertical 3D resolution on conventions 1920 x 1080 sets.