The LED light shows color and the quality of the light
Will produce a sense of vision drift in the traditional high pressure sodium in the light clothes color, the beautiful clothes will become an unbearable color, this makes the lady of those love of beauties avoid it to cannot compare with.Therefore floodlight's showing a color is very important.Below and all say the showing of LED light color.
When any diode was placed in to conduct appearance, regardless electronics with empty cave when compound, all will with light the form of the son send forth certain energy.The light color(light the energy of the son) is decided by semi-conductor material of can take Xi.The arsenic turns aluminum gallium(AlGaAs) and other materials to flush light.Nitrogen turns Yin gallium(InGaN) to deliver green light.The selenium turns zinc(ZnSe) to deliver blue light.
Can pass to integrate red light diode, green light diode with blue light diode to produce white light.However, Gao Liang Du(HB) whom we acquaint with very much white light what diode integrate is blue light InGaN diode and yellow color fluorescence powder.(general is the Chan Shi Yi aluminum garnet, Ce 3+:YAG)
When white light LED light usage fluorescence powder will take place very interesting of, useful affair.
At be called Si to give a gram of Si(Stokes) the quantum effect period for moving, fluorescence powder layer the energy had by emanative light son is lower than it to absorb from blue light LED of the energy of light son.
In Gao Liang Du's white light LED, a small part of blue light takes place Si to have longer wave-length after giving a gram of Si move.This is the good affair, because this makes LED light the manufacturer can use the fluorescence powder of many different colors layer and expand to shoot spectrum thus and availably raise showing of LED color index number(CRI).
Is also say, speak for the LED light, should not consider white light, but should possibly the accurate reflection LED light project light upon of all colors of object.CRI is an index sign of very hard generous character,it means drive artificial illuminate of the color of object with at actual sun light under the approaching of color degree shown, we use that index sign as "white" the standard of the light.
Adopt white light LED of fluorescence powder acquires of high CRI has price, because the Si gives a gram of Si, moves will result in white light LED of the efficiency is lower than the efficiency of monochrome LED.However apply but talk to majority of lightings, rather choose high CRI but efficiency slightly low LED light.
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