led street lights dallas tx


Posted April 10, 2018 by sandy0621

LED King, we offer a comprehensive range of LED products in a variety of classic and innovative styles to brighten up your homes, garden, and all commercial places.
 
A light-emitting diode, also known as LED, is a semiconductor light source. Currently the LED lamp is popular due its efficiency and brightness. Many believe that LED is a “new technology”; however, the LED as we know it has been around for over 50 years. The recent development of white LEDs is what has brought it into the public eyes as a replacement for other white light sources.

1907– H.J. Round reports light emission from a crystal detector.

1927– Oleg Losev notes that silicon carbide crystal diodes used in radios glowed when excited by an electrical current.

1939– Zoltan Bay and Gyorgy Szigeti patent a silicon carbide electroluminescent lighting device, considered to the predecessor to the modern-day LED.

1951– William Shockley, co-inventor of the transistor, files a patent for an infrared LED.

1961-Bob Biard and Gary Pittman developed the infrared LED at Texas Instrument. This was the first modern LED.

1962– Nick Holonyak creates the first practical visible-spectrum LED at Ge’s advanced Semiconductor Laboratory in New York.

1964– IBM uses LEDs on circuit boards in an early mainframe computer.

1968- Hewlett Packard integrates LEDs into early hand-held calculators.

1972– M. George Craford creates the first yellow LED.

1979- Shuji Nakamura develops the world’s first blue LED.

1995– The first LED with light from luminescence conversation is presented and is launched on the market two years later.

1999-Philips Lumileds introduced power LEDs capable of continuous use at one watt.

2002-Lumileds made five-watt LEDs available with a luminous efficacy of 18-22 lumens per watt.

2006- Nakamura wins the Millinnium Technology Prize for development of a white LED.

2007– Italian village, Torraca was the first place to convert its entire illumination system to LEDs.

2008- Audi is the first car to use fully LED headlamps.

2011– LEDs have become more efficient, so that a 6-watt LED can easily achieve the same results as a standard 40-watt incandescent bulb.
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Last Updated April 10, 2018