The exhibited items are LED light

Lighting Fair 2009 hold a seminar titled "LED and organic EL pave the road to the future of illumination". The panel discussion was participated by Shuji Nakamura, a professor of the University of California at Santa Barbara, a developer of blue LED and a leader in the research of GaN-based light-emitting element and Junji Kido, who leads the research of the led high bay light as a professor of Yamagata University Graduate School of Science and Engineering.The international conference hall at Tokyo Big Site was crowded with listeners. The panelists discussed possibilities as well as barriers that interfere with the promotion of LED lights and organic EL lights. The panel discussion was coordinated by lighting designer Tsutomu Ochiai, head of M&O Design Office.

The Lighting Fair is held every two years, but this year's fair is different from previous ones in that the site is full of LED lights. The discussion was started with comments on the exhibition site by Nakamura and Kido. Nakamura said he was surprised because this exhibition is quite different from the previous ones, more than 90% of the exhibited items are LED lights. He also said that 20 - 30% of the exhibits were LED lights and existing light sources including fluorescent lights were the main exhibits at an exhibition of lighting devices he visited two or three years ago in the US.Nakamura expects that luminance efficiency of white LEDs will be enhanced by at least 50% in two to three years, judging from the progress in the research and development of white LEDs. In a speech delivered prior to the panel discussion, he said it is possible that the luminance efficiency will reach 200 to 250lm/W in two to three years.

Kido said fluorescent lights were the main players at the exhibition four years ago, but with the number of LED lights increased, this year's show can be called an LED Fair. He also pointed out the rapid progress in the development of LED light technologies. In his speech delivered prior to the panel discussion, Kido said that organic EL lights have been steadily evolving in terms of luminance efficiency and lifetime and that the research and development of them are two to three years behind those of white led high bay light.while talking about the rapid evolution of LED lights, he expressed concern in respect to business model. He is worried that the Japanese LED light market might become like the Galapagos Islands, where species evolved differently.