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Free Your Eyes Glasses can produce convincing 3D imagery, but they can be awkward to wear. Next-gen 3DTVs will ditch the glasses and put lenses right on the screen.
In one setup, the TV divides the left- and right-eye perspectives into alternating vertical columns. To picture this, imagine slicing two photographs into thin vertical strips and alternating them: one from the right photograph, one from the left, etc. Microscopic lenses over the screen bend the light so that slices of the right-side perspective reach your right eye, and slices of the left-side perspective reach your left eye (see Fig. 4).
But what if you arent sitting directly in front of the screen? The new TVs will use several sets of lenses to create multiple pairs of right- and left-eye views. One set of images is for viewers directly in front of the screen. Another is for viewers way to the side of the screen, and additional pairs take care of all the viewers in between. If you do move from side-to-side, you simply transition from one pair of right-left images to the next.
The technology is very challenging. But when its ready, TV will look nearly as real as life itself.
Figure 4. Engineers are developing 3D TVs that work without glasses. Instead, they use lenses in front of the screen itself that direct the proper portion of the image to each eye.
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8 มิ.ย. 54 12:25:08
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