Why The Invention Of The Blue LED Was Revolutionary
Image Credit: Reuters
A quick overview:
- The blue light-emitting diode (LED) was invented in Japan in the early 1990s by Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura.
- Previously, red and green LEDs existed, but adding blue to the mix would allow white LEDs (Red, Blue, Green = White).
- LEDs produce the most amount of light per watt; LEDs: 83 lumens per watt, CFL bulb: 67 lumens per watt, incandescent: 16 lumens per watt.
- LEDs generate light via a semiconductor. Incandescent bulbs use a wire filament. LEDs produce less heat, making them more efficient.
- LEDs last 30 times longer than traditional bulbs.
- LED prices are dropping and are expected to now have the largest revenue share compared to other forms of lighting.
Also see: Nobel prize press release