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发光二极管实际上是点光源。厂家提供的发光二极管 ,能获得各种饱和色光 ,但获白光确实困难。任何发光二极管 ,都可在窄波长段发光 ,但白光仅可在混和各色发光二极管的光或者是在采用蓝色发光二极管的白发光涂层时得到。为叙述以下照明目的最适用发光二极管的色度坐标示于图 1
Light-emitting diodes are actually point light sources. Manufacturers to provide light-emitting diodes, can get a variety of saturated shade, but the white is really difficult. Any light-emitting diode can emit light in a narrow wavelength range, but white light can only be obtained by mixing light-emitting diodes of various colors or white light-emitting coatings using a blue light-emitting diode. The chromaticity coordinates of the most suitable light emitting diode for the purpose of illuminating the following are shown in FIG