show sengths and advantages of a ( government support) for many years, nanchang song government policy support from the led indusy. provincial and municipal levels of government attaches great importance to and support the led indusy, set up by the provincial government leadership, nanchang municipal government leaders to promote the indusialization of the head of the coordination group, in recent years have inoduced the "about nanchang optoeleconics indusy development to support a number of opinions ", the play led indusy r & d and indusial advantages, nanchang high-tech zone has been planned in the optical crystal and other enterprises as the leading led characteristics indusial park, is also investing billions to build the jinsha river led characteristics indusial park to promote local led indusy, upper, middle and lower reaches of development. intensive indusial development, will become the largest nanchang "led manufacturing center."
los angeles neon signsto achieve the region combined dimming lights, adjusting illumination environment, or through different color temperature adjustment for color temperature of fluorescent lamps, lighting performance approach is still relatively simple. rgb color mixing led technology have enabled the regulation of ambient light and color possible and very convenient. led pwm duty cycle is adjusted by adjusting the general approach, the approach can be easily realized in digital form. set aside as long as the digital interface on the drive, that is easy to realize the communication with other digital systems, the system consuction is very simple. figure 1. led lighting conol combined with the key advantage of its flexibility and artistic, select the appropriate system topology.
neon signs wholesalefor illusation, we assume that the led material is gaas, the material's refractive index is n1 = 3.9, the interface with the chip contacts the air, its light refractive index n0 = 1, the light from the optical communication theory to know the law of refraction, two different interface refractive index is not the same, the perpendicular to the interface of the light reflection function can be used the following equation to represent: r (l) = [(n1-n0) / (n1 + n0)] 2 & time100% for gaas and air , then there is, r (l) = [(3.9-1) / (3.9 +1)] 2 & time100% = 35.02 this means that there are 35.02% of the photons will be reflected back to the gaas material, which reflected back chip, can not escape into the air, only 64.98 percent are likely to escape into the air.
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