Passive 3D TV

Passive 3D TV

Well guys we all know that passive 3D TV is a pretty good option but have you ever bothered why hasn’t most of them take it home? Some say it’s the price, but most agree that it is because of the bulky battery powered goofy glasses, which are pretty much expensive also. In the beginning all the 3D TVs used a technique called the active shutter 3D which needs a power source for the specs and each lens shuts to show each eye a different image. Because of the frequent shutting of the lens it will create a flickering effect and is painful for the eyes.

So what’s special about a Passive 3d Tv?

Passive 3D tv uses inexpensive, light weight, un-powered, polarized 3D glasses and uses a special film on the screen to create the 3D images and effects as opposed to the old Active Shutter Technology which relies on the powered glasses to sync with the TV to decode the 3D imagery. The flickering effect in the active 3D won’t be there in the Passive 3D. We use the kind of glasses which we usually find in the IMAX theaters.

Display and Resolution of a passive 3d tv

Passive 3D screens are covered with a special coating called Passive Pattern Retarder (FPR).  It’s this special coating combined with the Polarized Glasses that allows each eye to view what is is intended to see to create 3D imagery.  The Passive 3D TV displays both the left and right eye image at the same time using alternating lines of resolution.  In a typical 1080P set the odd numbered lines for example 1,3,5 …. etc would display the left eye image while the even lines 2,4,6,… etc would produce the right eye images. The most glaring downside of passive 3D TV is that it produces literally half of the resolution of active 3D TVs. That’s because the way passive 3D TVs work is by sending half of the lines of content to one eye and the other half of the lines to the other eye. So, if you have a 1080 resolution, then each eye would be getting 540 lines each. As such, you get a lot of the artifacts and picture quality issues that you see with a 1080i (interlaced) picture. You’ll see lines and occasionally “jaggies.” You’ll also see some softness in the picture. Pros:
  • Inexpensive glasses
  • No battery powering required
  • Light weight
  • brightness
  • Vertical and horizontal viewing
Cons:
  • Picture resolution is less
  • D crosstalk
  • Visible lines
  • Off-axis viewing
  • 2D tv image quality
So what do you think about buying a passive 3d tv after reading this short review?

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