Half a croissant, on a plate, with a sign in front of it saying '50c'
h a l f b a k e r y
0.5 and holding.

idea: add, search, annotate, link, view, overview, recent, by name, random

meta: news, help, about, links, report a problem

account: browse anonymously, or get an account and write.

user:
pass:
register,


               

non light emiting tv

 tv that wont hurt your eyes while watching for extended periods of time
  (-1)
(-1) 		  [vote for,
against]

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
—sergeant dukie, Dec 01 2002

Iridescence http://www.livescie...utterfly_light.html
Color by varing layers of reflectivity [bungston, Sep 26 2009]

Please log in.
If you're not logged in, you can see what this page looks like, but you will not be able to add anything.
Short name, e.g., Bob's Coffee
Destination URL. E.g., https://www.coffee.com/
Description (displayed with the short name and URL.)






       Non emissive screens, like LCD, have been around for a while now.
—bristolz, Dec 01 2002
   

       lcd emits light...i wanted to point lights at the screen...preferably non reflective
—sergeant dukie, Dec 01 2002
   

       But the real world has light, the tv has light, it wouldn't look as good if it was non light emiting.
—Gulherme, Dec 01 2002
   

       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.   

       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.
—amuron, Dec 01 2002
   

       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.   

       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)?
—bungston, Sep 26 2009
   

       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.   

       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).   

       I think you'll see this available for purchase in 4-5 years tops
—cowtamer, Sep 26 2009
   


 

back: main index
business  computer  culture  fashion  food  halfbakery  home  other  product  public  science  sport  vehicle