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The incandescent light bulb is dead
long live the incandescent light bulb!
Just when everyone is replacing their incandescent light bulbs with more energy efficient options like LEDs to conform to EU restrictions. Scientists in the US have come up with an incandescent light bulb which turns everything on its head.
By re-directing the energy lost (given off by heat) back to the filament it will produce a light source which could reach 40% efficiency levels. This is far more efficient than current LED’s of around 14 to 15%.
There is also the colour rendering advantage of incandescent light bulb or the CRI (colour rendering index) which closely match those of natural daylight. This is especially important in the museum & art world when viewing paintings etc. LED’s until recently have much lower CRI ratings and struggled to render the reds in paintings along other things. So interesting times ahead, however it’s not clear how long it will take for these light sources to reach the market. So if you are thinking of going LED or you have already taken the plunge I wouldn’t worry too much, as your lighting is going to be still going strong in 10 to 15 years’ time. It just means that this new/old technology would be up to three times as efficient as those LED’s!
We will keep you posted …