Seoul Semiconductor LED light source used for cul

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demand for the white power led will reach 300 million led device applied to the lamp, the technical requirements in the following special two aspects: first, the good stability of the luminous efficiency, can not decay too fast. second, the light color consistency and better maintenance, not because a long time to change the color using the white light. these two lamps are required to better overall cooling, optical design should be in place. led lamps and high pressure sodium lamp current than ordinary advantages are as follows: first, energy conservation: current white led luminous efficiency of about 80lm / w, compared to traditional high pressure sodium 60% 50% saving.with the rapid led efficiency improvement in energy saving lamps semiconductors show great potential. second, the low maintenance costs: the current projected level of technology and test results, high-power led light source can not replace the normal use for 10 years, while the traditional high pressure sodium lamps to be replaced on average once a year and a half, the use of semiconductor light sources can greatly reduce maintenance costs . third, the color of good: led on the color index is high (75 ~ 80), people's reaction speed, the road looks brighter and feel more comfortable, the driver can feel more secure. the narrow-spectrum high pressure sodium lamp, the color difference (20 to 40), feeling faint.led message board
optical wireless network signal strength on the one hand is the light intensity, on the one hand is the receiver sensitivity of the detector. the current level of research point of view, it is completely possible to receive --- when diffuse light reflectance and light up the room when the network signal can then flooded the room. even more amazing is that the light reflected by the mirror has the same signal! led optical wireless networks, network operators and computer equipment, without any requirements as long as the common external network can access. led lights now on the market sold only lighting effects, such as to be used for communications to be installed in the led on a small "equipment", allowed to achieve high-frequency flicker. in the past, a regional wireless signal to achieve full coverage, only put a lot of wireless router. now, scientists have been able to access in the area where direct bearing wire communication signal, regardless of whether a neighborhood street, or the lighting of each family, can send the internet signal. by optical fiber cable net advantage of faster aircraft than the optical wireless network according to just for the "last few meters," the question is how to stream broadband backbone network terminal from the information transmitted to the interior of the wireless devices its advantages are obvious. led writing board
(street products, but in the light source part of the total cost is not high therefore, the cost of installation in the project to raise the ratio will not be too high, the application of the space is quite large), in the civilian in the bear. the current design and manufacturing standards chaotic, damaged a high proportion of the life of the led advantage. recommendation: uniform led standards, improve quality and stability, the establishment of market competition, co-ordinating body, to avoid vicious competition, and vigorously promote the concept of quality led, to avoid instance by adverse effects, to get people to accept the led from the thought can in fact achieve its long life benefits, raising the level of choice and use of led.led display board