《LED通用照明电路设计要素》.pdf

照明世界概览World of Lighting • 全世界约有20-22%的电能用于照明，其中40%是白炽灯照明，每 年消耗的电能达2,000太瓦时(TWh)(等于20,000亿千瓦时) ~ 20-22% of electrical energy is used for lighting of which 40% is for incandescent lighting, this represents 2000 TWh/year Residential 28% Industrial 16% Restaurants, Retail and Streetlighting Services 48% 8% 超过70%的电能用于住宅市场之外的领域 70% of the Energy Usage is Outside of the Residential Market Source: OSRAM 2 LED技术预测及影响 LED Technology Forecast and Impact US DOE January 2009 3 LED光学特性 LED Optical Characteristics •染色性Chromaticity •有些人定义为黑体曲线上或附近白色区域中的 “框” Some defined “box” in the white area on or near the Black Body Locus •LED的Bin尺寸(x、y 匹配)因供应商而异Bin sizes (x, y coordinates) varies by supplier