Old fashion light bulbs radiate 95% of the energy used to power them as heat and only lasts a couple hundred hours. However a new kind of light bulb from Ceravision promises to revolutionize projector and flat screen TV lighting. Not only will these new lights be cheap, they will last in effect forever. That is they will last longer than the device you put them into. Ceravision tests suggest that the operating lifetimes for the final system may be well in excess of 50,000 hours. Or almost 6 years if you left them on 24/7. With normal use this could mean a decade or more of use. In comparison current projector lights last 1-2000 hours with newer models claiming 4000 hours. (although to be fair some LED lights claim operating lives of over 100,000 hours).
So how does it work?