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LED is a new flashlight, since the advent of white LED, it has been introduced to, but when the first white LED brightness because of low and high cost, can be said that these products have been in the "laboratory stage," the price of ordinary people, no expensive dare ask Tianjin, part of the military on a small amount of promotion. With white LED brightness enhancement, cost reduction, gradually taking ranks as the general public. Brightness increase is mainly due to the emergence of ITO, the brightness almost doubled the price, because the improvement of the production process, from the first four dollars a drop of 4 cents a present, a dime less expensive also many. Popular flashlight now on the market have 9 or 12 in diameter 5mm, LED, connection to parallel, 3 7 battery. Or a 1W or 3W or 5W high power LED. 1W High Power LED single device prices ranging from 15-35, first introduced lumileds 1W High Power LED 4-5 dollars if sold. Known as the fourth-generation semiconductor lighting light source, can be said that a replacement product, cost is much higher than ordinary light bulb flashlight, but long life. Energy saving, general bulbs I do not know how much LED flashlight with 1W-5W month range, discussed energy-saving advantage, then, aside flashlight, LED-based products currently on the market ranging in energy consumption between the incandescent and fluorescent lamps , is expected to catch up in 2008 lamps. But the absolute environmental protection, pollution-free. Long life, is the recognized advantages of LED, but with the LED flashlight on the market can be said to be good and bad, this elaborate up too much, will not elaborate here. Another fatal flaw LED flashlight (the shortcomings of ordinary people difficult to find, from a technical perspective, I am here to say that a good or bad), low color index! In the LED irradiation show the true color is not incandescent, which come from the analysis of spectral distribution, a technological problem, not elaborate further. There is also a drawback, spot, white LED as its manufacturing process defects, together with the reflector or lens with the error, easily lead to "yellow circle" problem. Some manufacturers do not consider the quality and interface with the device, simply copy other manufacturers products, the poor quality LED flashlight flooding the market, serious damage to the LED's reputation, in this great indignation, Jiangsu and Zhejiang, and Shenzhen is the most. Too many fake and inferior products. I have on 10 yuan in Taobao bought an LED flashlight, its quality can be imagined. Fortunately, I'm not doing flashlight. Of course, good quality torch is not. Buy flashlight, please note: 1, see the battery, there are two regular batteries and lithium, although lithium rechargeable battery is, but the low life, about 2 years, LED life span of about 10 years, can be selected according to the actual situation. 2, see light bulbs, light bulbs out of the case, the naked eye it is difficult to distinguish between good and bad, you can see in the case of light bulbs consistency. 3, read iris, a good LED flashlight a circular aperture of uniform, bad yellow and blue LED flashlight beam is divided into two uneven distribution of color. 4, see brightness, good brightness LED flashlight with high, slow decay rate. 5, see waterproof, a good LED flashlight with waterproof, seismic performance, that is shatterproof 5, see the appearance of the people than I can see, I have nothing to say. I chose the aluminum alloy shell, elegant appearance. The e-commerce company in China offers quality products such as Low Temperature Steel Pipe , Forged Pipe Fittings Manufacturer, and more. For more , please visit Stock Pipes today!
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