Just when you thought it might have been safe to dip your toes in the 3DTV water and go and buy one of the ranges of flat screens from any of the big names there is an alternative to a TV that works with Active Shutter glasses.  It’s called “Passive Polarization” and will be supported by LG and JVC.  Instead of Active Shutters, they use polarised lenses instead.  Polarizing TV’s have a micro-polarizer that is bonded directly onto the front of a display and then uses an onboard 3D encoder, which takes a 3D source and filters it.  Viewers then wear polarized glasses (even those RealD spec’s pocketed from their local multiplex) to experience the 3D effect.  The upside of this is that the glasses are cheaper than frame sequential glasses so therefore some makers may offer more than just one pair with their new TV’s. However the downside is that the TV can’t display a full HD image to each eye plus also viewing angles are limited and the picture is generally darker too.   These two competing approaches to 3DTV are certain to prove problematic with potential users as trying to watch 3D with Active Shutter spec on a polarized just won’t work and vice versa.  Are the two manufacturers mentioned above going to release TV’s that use both technologies so that they don’t get left behind in the sales war – who knows?  This has the makings of the first battle fought with 3D glasses and who will come out on top is anyone’s guess.