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The Japan LED Lighting Promotion Conference (JLEDS) has disclosed a blueprint for the development of high-power white LEDs for lighting fixtures. The luminous efficiency targets of white light ordinary products (high-efficiency type), high color rendering products, and bulb color products (bulb color type) as of 2020 have been proposed. According to the target, the luminous efficiency is expected to reach 150 lm/W around 2015. Under normal circumstances, the luminous efficiency of high-efficiency products in fluorescent lamps is about 100lm/W, the high-efficiency products of white LEDs will reach about 100lm/W in 2008, the high color rendering will exceed 80lm/W, and the color of light bulbs will reach 70lm/W. about. In 2010, it is expected to reach about 130 lm/W, 120 lm/W and 90 lm/W or more. In 2015, it is expected to reach 160 lm/W or more, 140 lm/W or more and 130 lm/W, respectively.
JLEDS is a Japanese domestic industry group that promotes the popularity of LED lighting systems. The group also released a blueprint for technology development of white LEDs in September 2005. The blueprint for technology development is a revised version. JLEDS conducted a questionnaire survey on the affiliated companies and conducted statistics, and based on this, developed the blueprint for this development.
Regarding the spread of LED lighting, the technology development blueprint indicates that it will be popularized around commercial facilities around 2010, when luminous efficiency exceeds 100 lm/W. LED lighting will be popularized in the office and residential areas around 2015, when light quality (light tones such as white LEDs) is improved. It is expected that the domestic market size of LED lighting in Japan will reach 400 billion yen in 2010 and will reach 800 billion yen in 2015.
The technology development plan also mentions the issues facing the promotion of universal access. Point out that the biggest issue in achieving universal access is cost. The cost of LED lighting fixtures is 5 to 10 times that of fluorescent fixtures and HID appliances. This is because white LEDs are two digits higher in terms of the unit price of the light source (yen/lm), and heat sinks, power supplies, and lenses are also required. JLEDS believes that not only is it necessary to reduce the cost of the light source, but it is also important to reduce the cost of peripheral components. In addition, indoor lighting places great emphasis on color temperature and color rendering, so it is also necessary to improve light quality.
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