You've heard of the incandescent light bulb, and the compact fluorescent light bulb, and the LED light bulb. How about a source of light that isn't a bulb, but an entire wall that emits light?
LOMOX, a company that develops OLED (Organic Light Emitting Diode) technologies, has built OLED materials that could be coated onto a film, which could in turn be attached to a wall. This would turn the entire wall into a light source.
A light source that emits natural-looking light with a brightness of 150 lumens/watt.
The film would consume just 3 to 5 volts of electricity, which means you could power it with a battery. LOMOX says it has overcome a major drawback of OLED technology: short product lifetimes.
The company expects its lighting technology to reach the market in 2012.