On October 29th, the electronic system design report, Professor Soo-Young Park of Seoul National University in South Korea and his team successfully developed a white LED. Compared to current white LEDs, its color rendering index (CRI) is closer to daylight.
At the same time, many LED manufacturers have not stopped their efforts, they continue to invest money to improve luminous efficiency, extend the life and light quality expressed in CRI.
Like all new technologies, mass production is a very important step for the LED technology developed by Professor Park. Just as today's OLEDs are working to expand their applications, there is a need to address life and issues such as aging to drive large-scale applications.
LED lifetime is an important advantage today, driving LED lighting in areas where maintenance costs severely impact total cost of ownership (TCO), such as LDE streetlights and industrial fixtures. Using current state-of-the-art technology, municipalities can recoup their LED streetlight investment in three years or less. Low energy consumption and long maintenance intervals make this return on investment (ROI) possible.
The semiconductor industry is driving the lighting industry to a better and more efficient direction. An advanced power supply efficiency can reach about 90%. A power factor of 90% is also possible.
The overall efficiency of the luminaire (ie, the light engine plus power) is becoming the focus of attention. The California Energy Agency's Order No. 24 is a good example of measuring the efficiency of output from the socket to the net light.
The application of LED lighting is also changing the lighting infrastructure. Lamps that previously switched between on and off can now be automatically dimmed; previously only white light fixtures now have other colors. The user begins to pay attention to the quality of the luminescence (ie CRI). These applications require more semiconductor devices to implement the above advanced features. As LEDs continue to increase their luminous output and CRI, semiconductor technology that controls and communicates with luminaires will continue to evolve.
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