At this year's Guangya Exhibition, the number of LED exhibitors has been blowout, and the product range is much richer than last year. Especially worth noting are the multinational giants such as Philips, Osram, GE, Toshiba Lighting, and domestic brands such as Sanxiong, Aurora, Huayi Group and Donglin Electronics, which have joined LED competition. However, as China's LED production and application scale is increasing, in addition to the need to focus on chip development, but also focus on standard-setting work, and even the production of LED accessories.
The upstream chip gradually got attention. Guangdong's largest LED chip production and R&D base settled in Guangzhou.
This year, the country strongly advocates low carbon and energy conservation, and LED, which is the most popular energy-saving and environmental protection light source product, is definitely the hottest term in the lighting industry this year. Recently, the largest and most technologically advanced LED chip production and R&D base in Guangdong Province was laid on the shore of the Nanyang District of Guangzhou. Chen Mingde, deputy mayor of Guangzhou, director of the management committee of Nansha Development Zone, and more than 200 people including the deputy director of the Nansha Development Zone Administrative Committee and the district head Luo Zhaoci attended the groundbreaking ceremony.
It is understood that after the completion of the base, it is estimated that the output value will reach 2 billion yuan, the sales income will be 1.5 billion yuan, and the profits and taxes will be 105 million yuan. It will attract and train about 180 high-level semiconductor production managers and solve employment opportunities of about 1600. One. In one fell swoop, it has surpassed the LED industry bases in Shenzhen, Dongguan, Jiangmen, Guzhen and Xiaolan, and became the largest LED chip production and R&D base in Guangdong Province. This also fully shows that under the influence of the country's policy of promoting low-carbon economy and low-carbon life, the LED industry has achieved further development.
Standards development needs to speed up the passive situation of “products are self-made, standards are determined by othersâ€
In August of this year, the US Department of Energy (DOE) will officially take effect after confirming the LED energy star. According to the statistics released by China's semiconductor lighting engineering research and development and industry alliance, the output value of LEDs for lighting in China has reached 7.5 billion yuan in 2009. Faced with the huge business opportunities and encouraging development prospects of the semiconductor lighting industry, countries are actively formulating relevant standards for LED lighting fixtures, with a view to gaining a head start in the new round of technological innovation in energy-saving lighting products. However, in this aspect of standardization work, China has gradually fallen behind the United States. At present, the US Department of Energy (DOE) and the Ministry of Environmental Protection (EPA) are using the “Energy Star†project to vigorously promote product standards that are suitable for them. Under the attraction of US technology advantages and huge markets, its influence is gradually expanding. If this situation continues to develop, China's semiconductor lighting manufacturing industry will fall into the passive situation of "products are self-made, standards are determined by others." If you want to catch up again, you will need a longer period, so it is imperative to speed up the standardization work.
Under this circumstance, relevant national departments have begun to accelerate the standardization of LED lighting product specifications. In 2009 and 2010, four mandatory national standards for GB, GB, GB, GB, etc., and GB/T and GB were issued. /T, GB/T24825 and other 7 national standards for LED lights.
Accessories constraints have become an international bottleneck, high-quality product capacity is still å°´å°¬
According to foreign media reports, due to the current shortage of LCD TVs and lighting LEDs and their accessories, Mitsubishi Chemical, Toshiba and other Japanese home appliance companies have expanded their LED production capacity. Mitsubishi Chemical plans to invest 7 billion yen to expand the capacity of its original LED production line. It is expected that by 2015, LED production capacity will increase to six times.
Sharp has announced that it will mass produce LCD TV backlights and blue LED chips for LED lighting at the Fukuyama Plant this year. By 2011, the annual production capacity of blue LED chips in the two factories in Sharpforn and Sanyuan can reach 5 billion. The global LED manufacturer Toyota Synthetic plans to double the annual LED production capacity by 2012, from the current 5 billion to 10 billion. In this international situation, China's LED companies should also be alert.
Long wave pass filters are usually used for wavelength order classification. One side is plated with hard medium long wave pass filter film and the other side is plated with antireflection film, which can cut off sharp light at a specific wavelength, while the other wavelength region has high transmission, so as to achieve the purpose of isolating a wide region of the spectrum
Filter is an optical device used to select the required radiation band. A common feature of filters is that no filter can make the imaging of celestial bodies brighter, because all filters will absorb certain wavelengths, making objects darker.
The filter is made of plastic or glass with special dyes. The red filter can only let the red light pass through, and so on. The transmittance of glass sheet is similar to that of air, and all colored light can pass through, so it is transparent. However, after dyeing with dye, the molecular structure changes, the refractive index also changes, and the passage of some colored light changes. For example, when a white light passes through a blue filter, it emits a blue light, while there are very few green and red light, and most of them are absorbed by the filter.
Long Wave-pass Fliter
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