|Isamu Akasaki , Hiroshi Amano and Shuji Nakamura|
They succeeded where everyone else had failed. Aka - saki worked together with Amano at the University of Nagoya, while Nakamura was employed at Nichia Che - micals, a small company in Tokushima. Their inven - tions were revolutionary. Incandescent light bulbs lit the 20th century; the 21st century will be lit by LED lamps.
White LED lamps emit a bright white light, are long-lasting and energy-efficient. They are constantly improved, getting more efficient with higher lumi - nous flux (measured in lumen) per unit electrical input power (measured in watt). The most recent record is just over 300 lm/W, which can be compared to 16 for regular light bulbs and close to 70 for fluores - cent lamps. As about one fourth of world electricity consumption is used for lighting purposes, the LEDs contribute to saving the Earth’s resources. Materials consumption is also diminished as LEDs last up to 100,000 hours, compared to 1,000 for incandescent bulbs and 10,000 hours for fluorescent lights.
The invention of the blue LED is just twenty years old, but it has already contributed to create white light in an entirely new manner to the benefit of us all.
Isamu Akasaki , Japanese citizen. Born 1929 in Chiran, Japan. Ph.D. 1964 from Nagoya University, Japan. Professor at Meijo University, Nagoya, and Distinguished Professor at Nagoya University, Japan.
Read More :- http://en.nagoya-u.ac.jp/people/distinguished_award_recipients/nagoya_university_distinguished_professor_isamu_akasaki.html
Hiroshi Amano , Japanese citizen. Born 1960 in Hamamatsu, Japan. Ph.D. 1989 from Nagoya University, Japan. Professor at Nagoya University, Japan.
Read More :- http://profs.provost.nagoya-u.ac.jp/view/html/100001778_en.html
Read More :- www.sslec.ucsb.edu/nakamura/