h a l f b a k e r yRenovating the wheel
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this tv would not use a tube, and would not emit light. it may use a sort of dye or ink that could be arranged somehow? so that you can see the tv at night, there could be small lights around the tv pointed at it. this would keep you from staring at a flashlight (tv) and wil not hurt your eyes
Iridescence
http://www.livescie...utterfly_light.html
Color by varing layers of reflectivity [bungston, Sep 26 2009]
[link]
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Non emissive screens, like LCD, have been around for a while now. |
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lcd emits light...i wanted to point lights at the screen...preferably non reflective |
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But the real world has light, the tv has light, it wouldn't
look as good if it was non light emiting. |
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actually LCD glass absorbs light. You can get LCD's as transmissive or reflective as an OEM. Most of the time transmissives are used so they can be backlighted. The reflectives require front lighting as sergeant dukie suggest (they are a transmissive version with a mirror in the back, but usually the image quality is not that good. |
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If the LCD was neither transmissive nor reflective, it would be a total absorber and you wouldn't see it. Useful in the lab, hard to realize in the lab, but still very useful at times for optics work which is why we spend lots of money on them. |
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A TV which altered reflectivity and brightness of each pixel could do this. I think something like a liquid crystal might have such a property: perhaps the thickness of the pixel? This would do black and white. |
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I wonder if very tiny layers in the nonemissive screen could generate varying colors based on the number of layers present at any given time, in the manner of gasoline on water or certain iridescent butterfly wings (see link)? |
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I've seen prototypes of this for cell phones -- there are DMD (Digital Micromirror Devices) which are similar to DLP chips that provide this functionality. They are not cheap. |
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E-ink types of devices are also coming into being, as are reflective LCD screens (although I have yet to see a reflective LCD screen in color). |
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I think you'll see this available for purchase in 4-5 years tops |
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