World Press Network

led led lamps for laser level should be consistent with class criteria. 2, anti-static capabilities: anti-static ability of the led, long life, and therefore higher prices. the led is usually static than 700v can be used for led lighting. 3, the wavelength: the same wavelength led, and color, such as requiring the same color, the price is high. no led spectral separation device manufacturer of products difficult to produce pure colors. 4, the leakage current: led is one-way conductive light, if there is reverse current is called leakage, leakage current is large led, short life, low prices.lighted signs
the product successfully before the mass production of about 20lm / w luminous efficiency is improved by 2.5 times. with the end of nichia chemical started to provide this product to a specific sample, and plans before the summer of 2005 to reach 1 million per month. mainly for the new vehicle-specific led headlights and lighting markets. its brightness is better than hid light source, so take 15% of the current market hid headlights light source (high inteity cischarge) constitutes a serious threat. writing board
osram is a traditional light bulb from a lighting manufacturers to develop high-tech companies. sales in fiscal 2004 to 42 billion euros, to serve individual customers more than 140 countries and 19 countries, more than 50 vendors. currently, about one-third of its revenue from opto semiconductors and led, long term, this figure will rise to 50%.expected to improve the luminous efficiency white led, there are two lines, is to increase the size of led chip, that is, to have an area of 1m square meters of small chips, light-emitting area increased to more than 10m square meters, to increase the amount of light or to several small chips packaged together in the same module. sign boards