In September 2003, a new type of blue LED was demonstrated by Cree that consumes 24 mW at 20 milliamperes (mA). This produced a commercially packaged white light giving 65 lm/W at 20 mA, becoming the brightest white LED commercially available at the time, and more than four times as efficient as standard incandescents. In 2006, they demonstrated a prototype with a record white LED luminous efficacy of 131 lm/W at 20 mA. Nichia Corporation has developed a white LED with luminous efficacy of 150 lm/W at a forward current of 20 mA. Cree's XLamp XM-L LEDs, commercially available in 2011, produce 100 lm/W at their full power of 10 W, and up to 160 lm/W at around 2 W input power. In 2012, Cree announced a white LED giving 254 lm/W, and 303 lm/W in March 2014. Practical general lighting needs high-power LEDs, of one watt or more. Typical operating currents for such devices begin at 350 mA.
In September 2003 , a new type of blue LED was demonstrated by Cree that consumes 24 mW at 20 milliamperes ( mA ) . This produced a commercially packaged white light giving 65 lm / W at 20 mA , becoming the brightest white LED commercially available at the time , and more than four times as efficient as standard incandescents . In 2006 , they demonstrated a prototype with a record white LED luminous efficacy of 131 lm / W at 20 mA. Nichia Corporation has developed a white LED with luminous efficacy of 150 lm / W at a forward current of 20 mA. Cree 's XLamp XM - L LEDs , commercially available in 2011 , produce 100 lm / W at their full power of 10 W , and up to 160 lm / W at around 2 W input power . In 2012 , Cree announced a white LED giving 254 lm / W , and 303 lm / W in March 2014 . Practical general lighting needs high - power LEDs , of one watt or more . Typical operating currents for such devices begin at 350 mA.
In what year was a new type of blue LED produced?
In what year was a new type of blue LED produced ?
2003
2003