Information On How 3D TVs Work to Provide You With the Very Best Entertainment
The number of 3D TVs sold has continued to rise over the last year and shows no sign of slowing down. This article takes a look at how 3D TV pictures are recorded and displayed on the TV. A knowlede of how 3D technology works can help when buying a TV. Without this knowledge it is not easy to determine if a particular TV has a weakness. Note that we are only going to look at 3D TV that uses glasses. The technology for 3D TV without glasses is still in its infancy and there are several limitations, such as limited viewing angle and small screen sizes, which make it an inferior product right now.
The thing to look at first is what is the difference between a traditional 2D TV picture and a 3D picture? A 3D picture has depth of field of view as the third dimension, whereas a 2D picture only has two dimensions – basically up and across your TV screen. With 2D pictures the brain forms its own impression of depth based on what it expects in real life. The brain knows for example that things that are smaller than expected are in the background and vice-versa for things in the foreground. In real life the depth information is generated by the different viewpoints of our eyes. Each eye sees objects from a slightly different angle. The brain combines the images from each eye and can generate a 3D impression of actuality.
A 3D TV picture must therefore contain two images, one for our right eye and the other for our left eye. This brings about two problems. How to generate two images and how to display them so that our brain sees a 3D picture? The answer to the first question is that a 3D program contains two picture signals that are filmed by a camera that has two lenses, roughly the same distance apart as our eyes. A 3D TV therefore receives the pictures in two streams of video but that still leaves the problem of how to display them. There is only one screen on the TV after all.
The answer involves a bit of trickery. The brain is fooled into thinking that it can see two separate images, one for the left eye and the other for the right eye. A 3D TV displays the pictures for each eye alternately. In order for the system to work, the eyes must only see the appropriate image and not the image for the other eye.
At this stage the 3D glasses come in. The glasses use something known as active shutter technology, which makes use of a LCD built into each lens of the glasses. When the left picture is displayed, the LCD in the right lens turns black, in other words opaque, so that the right eye cannot see it. Then the right picture is displayed and the right LCD becomes clear while the left lens turns black. The glasses are synchronized to the TV so that the lenses open and shut at the right times.
By alternating the pictures at high speed, the brain is therefore tricked into thinking it is looking at a 3D image on the TV.
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Best of Both Worlds Concert: The 3-D Movie: Extended Edition $2.18 The Hannah Montana & Miley Cyrus: Best of Both Worlds live concert was a sold-out sensation everywhere it played, and this concert video is the next best thing to being there for all the fans that couldn’t get tickets to attend the concert in person. The movie opens with Miley Cyrus backstage in make-up and hair, warming up with vocal exercises, then cuts to Hannah Montana (her alter ego)’s perfor… |
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Beauty and the Beast (Five Disc Combo: Blu-ray 3D / Blu-ray / DVD / Digital Copy) $35.29 The film that officially signaled Disney’s animation renaissance (following The Little Mermaid) and the only animated feature to receive a Best Picture Oscar nomination, Beauty and the Beast remains the yardstick by which all other animated films should be measured. It relates the story of Belle, a bookworm with a dotty inventor for a father; when he inadvertently offends the Beast (a prince w… |
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The Lion King (Four-Disc Diamond Edition Blu-ray 3D / Blu-ray / DVD / Digital Copy) $25.00 Versions of The Lion King on Blu-ray and DVD The Lion King (Two-Disc Diamond Edition Blu-ray / DVD Combo in Blu-ray Packaging) The Lion King (Two-Disc Diamond Edition Blu-ray / DVD Combo in DVD Packaging) The Lion King (Four-Disc Diamond Edition Blu-ray 3D / Blu-ray / DVD / Digital Copy) The Lion King Trilogy (Eight-Disc Combo: Blu-ray 3D / Blu-ray / DVD / Digital Copy) Release… |
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Tron: Legacy (Four-Disc Combo: Blu-ray 3D / Blu-ray / DVD / Digital Copy) $26.95 Disney presents a high-tech motion picture unlike anything you’ve ever seen in an astonishing 3D Combo Pack. Immerse yourself in the digital world of Tron, as celebrated actor Jeff Bridges stars in a revolutionary visual effects adventure beyond imagination. When Flynn, the world’s greatest video game creator, sends out a secret signal from an amazing digital realm, his son discovers the clue and… |
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Polar Express 3D Glasses for 3D DVD (3 Pair, Plastic) Extra upgrade Anaglyph $2.72 These are high quality plastic framed glasses with hard lenses (not cardboard). The lenses are RED & CYAN color and are for use with the home 3D version of the home DVD Polar Express or any other 3D DVDs that require RED/CYAN lenses (such as Hannah Montanah). These glasses will NOT work in the movie theaters nor with movies that require magenta/green lenses. The DVD must be the “3D” version…. |
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Hi-Shock Blue 3D Active Shutter Glasses Compatible with Infrared based 3D TV Panasonic Toshiba Sony Panasonic Sharp Samsung LG 3D TVs $42.79 Please refer to below list for the compatible 3D TV brands compatible with the universal 3D glasses.Samsung (D series are not included), Sony, Sharp, Toshiba, Phillips, LG (IR 3D TV models only), Hisense, Haier, TCLNote: 1. PDP/Bluetooth/passive 3D TVs are excluded; all the compatible brands listed here are based on the manufacture¡¯s data or practical testing, while we did not perform the test … |
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3D Glasses – 24W x 16H – Peel and Stick Wall Decal by Wallmonkeys $33.99 WallMonkeys wall graphics are printed on the highest quality re-positionable, self-adhesive fabric paper. Each order is printed in-house and on-demand. WallMonkeys uses premium materials & state-of-the-art production technologies. Our white fabric material is superior to vinyl decals. You can literally see and feel the difference. Our wall graphics apply in minutes and won’t damage your paint or l… |
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Underworld: Awakening (+ UltraViolet Digital Copy) [Blu-ray 3D] $17.99 Death Dealer Selene (Kate Beckinsale) is back–again dressed in skintight black–for this fourth installment of the popular horror/action series, as humanity goes to war against both the vampire and werewolf clans. Escaping from the corporation that has held her captive in cryogenic freeze for experimentation, the vampiric heroine proceeds to do sexy battle with her adversaries, with an assist com… |