color index

337)was obtained at 8V,and the corresponding color rendering index(R_a) and color temperature(Tc) were 85.

337),对应的显色指数(Ra)为85。

By selecting the phosphor,silicon and mixture ratio,high-power white LED with high brightness and low attenuation is prepared,and the color rendering index(CRI) reaches 95.

通过甄选荧光粉、硅胶以及配比,制备出显色指数(CRI)为95的高亮度、低衰减的大功率白光LED。

Method for the computing of color-rendering index;

光源显色指数的计算方法研究

This is hopeful to decrease the correlated color temperature and improve the color-rendering index of white LEDs.

结果表明:产物为立方晶系的钇铝石榴石结构,可被蓝光有效激发,并且通过Ce3+,Pr3+之间的能量传递激发镨离子发光,使荧光粉的红光成分有所增加,从而有望降低白光LED的色温,提高其显色指数。

White LED dominant wavelength largely change with different standard light sources,and color purity is relatively low,near 0,color rendering is good for the general color-rendering index of 82, so white LED is in full conformance with the lighting requirements.

主要对蓝光、绿光、白光LED的色度特性进行分析,首先通过单色仪,分别测得蓝光、绿光、白光LED的相对光谱功率分布并以色度学理论为基础,计算出光源主波长、色纯度、色温和显色指数。

The color coordinate and color index are very important for lighting source.

白色发光二极管在制备过程中与其他颜色发光二极管不同的是它需要加上涂粉工艺 ,涂粉的一致性对白色发光二极管的色坐标和显色指数的影响非常大 ,而色坐标和显色指数是照明光源的重要技术指标。

The change of color coordinate is very small and the color index is between 75 and 85, when the current changes from 100mA to 1000mA.

研究了不同电流条件下 ,亮度、流明效率、色坐标和显色指数的变化。

Luminous efficacy and color rendering of white LED based on two color LEDs are dis- cussed and analyzed.

从色度学原理出发,简述了两基色白光LED的配色原理,确定了可合成白光的两基色的选取范围和两基色的配比范围,计算分析了两基色白光LED的光视效能和一般显色指数。

We used luminous efficacy and color rendering as standards in the evaluation of them by a program simulation and obtained the best combinations which supported by experiment.

5%范围内的众多基色组合,同时对光视效能、显色指数和荧光粉转换效率等参数进行了分析,提出了荧光粉转换白光LED和两基色、三基色白光LED的最佳基色组合,并在实验上对荧光粉转换白光LED进行了验证。