With the development of social economy, the energy consumption of the lighting industry has become more and more, and the new generation of lighting technology of energy saving and environmental protection--LED (LightEmitting Diode) light source technology has become a strategic new technology for the development of relevant countries and companies. In 2010, the scale of China's LED industry has exceeded 120 billion yuan, and it has entered a period of rapid development. However, most of the enterprises in China's LED lighting industry are still concentrated at the low-level level, so the development of low-cost independent intellectual property rights. The high-performance new packaging materials meet the development requirements of China's LED industry.
Currently, one of the most commonly used methods in the world to obtain white light is to mix the blue light emitted by the chip and the yellow light emitted by the blue light-emitting phosphor of the chip to generate white light, such as a blue GaN LED chip and a yellow Y3Al5O12:Ce3+ phosphor. Combination [1]. However, this method of producing white light has two main disadvantages [2]: 1 The refractive index of the phosphor YAG crystal is 1.836 (when the wavelength is 588 nm), and the refractive index of the epoxy resin and the silica gel applied to the LED package. Then it is no more than 1.55; in addition, the particles of the phosphor are usually around 10 μm. The difference in refractive index between the phosphor and the encapsulating material and the large particles of the phosphor result in severe light scattering, resulting in light loss. 2 The organic material used for packaging is in an environment of high temperature and short-wave radiation, which is prone to aging failure and causes LED failure. 3 Because the thermal resistance of the contact surface of the phosphor with the epoxy resin or the silica gel is large, the heat is concentrated, and the epoxy or the silica gel is easily carbonized and blackened, thereby causing the LED to fail.
Due to the above various reasons, the development of new fluorescent conversion composite materials has become a research hotspot for researchers. The current research hotspots mainly focus on the following aspects: glass ceramics containing YAG (Y3Al5O12: Ce3+) nanocrystals, Eu2+ doped silicate nanocrystals containing glass ceramics. Transparent glass ceramic is obtained by partial crystallization of inorganic precursor glass. It is a composite material composed of an oxide glass phase and a nanocrystalline phase. It combines the advantages of optical crystals and optical glass, and can have a spectrum similar to or better than a crystal. Performance, but similar to the obvious advantages of glass material preparation technology, low cost and high concentration doping, and easy to make large size high power and shaped devices; in addition, its mechanical properties and thermal stability (mainly depends on Glass phase substrates, such as SiO2), are also superior.
For more information, please refer to the March issue of "High-tech LED-Technology and Applications" magazine
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Lamp housings are made of aluminum drawn, sharp lines, simple structure, beautiful appearance, strong, corrosion-resistant, easy to install. Light surface electrostatic spray, high temperature resistance, good weatherability. Imported anodized aluminum reflector plate, ensuring high output light energy. 3MM thick high-strength tempered glass, high transmittance, impact resistance. Built up to ensure protection class IP65. Technical parameters Model: HX-XQ range of colors: red, yellow, blue, green, white and color beam angle: 15 ° -60 ° light irradiation distance: 20 m control system: DMX512 controller or wall washer simple controller case material aluminum connection standard signal power cord connector 3-pin signal connector.
Effect:
Flashing color can be achieved through the 16 million kinds of color change of the static display: Hu Ming, suddenly dark.
Cross-color: color temperature of several alternating intervals.
Chase Change: Several color temperature to catch up with each other.
Flow Function: Single color temperatures regularly circulate.
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