LIGHTING COLOR 色温

色温是一种温度衡量方法，通常用在物理和天文学领域，这 个概念基于一个虚构黑色物体，在被加热到不同的温度时会 发出不同颜色的光，因此，我们用色温来定放光的颜色。 为了解决颜色空间的感知一致性问题，专家们对光色系统进 行了非线性变换，制定了CIE 1931 XYZ颜色空间的规范。 白炽灯就非常接近于一个黑体辐射体。其他光源如ＬＥＤ光 源，并不按照黑体的放射曲线辐射能量，所以其经常和相关 色温（CCT）联系在一起，这是找到光源的感知色温跟黑体 最相近的方式。根据太阳在天空移动的位置，我们在ＣＩＥ 色域图上定义光色的位置。  Color temperature is a method of measuring temperature which is used in physics  and astronomy. This concept is based on a fictitious black object. When heated to  different temperatures, it will emit different colors of light. So color temperature is to  define the color of the light. In order to solve the problem of color space perception consistency, experts have  carried out nonlinear transformation of light color system and formulated the  specification of CIE 1931 XYZ color space. The incandescent lamp is very close to a blackbody radiator. Other light sources,  such as LED light source, can not radiate energy according to the radiation curve of  blackbody. Therefore, they are often associated with correlated color temperature  (CCT). This is the closest way to find the color temperature of light source and  blackbody. According to the position of the sun moving in the sky, we define the  position of light color on the CIE gamut map.

色温一致性 Color temperature Consistency

标准光谱随着色温改变，同一个光源如果标准光谱不同其色 容差也不同，但是测量的时候，一般光色电分析系统会自动 识别被测光源所在的色温范围，以确定标准光谱的色温取 值，色容差的单位是SDCM，色容差数值越小越好。色容差 的国家标准为7SDCM。 高质量照明对于色温一致性的要求极高，目前市场上光源存 在色温不一致的现象对设计师和客户造成很大的困扰。因 此，我们挑选高色温一致性的LED灯珠(SDCM≤3)来应用于我 们的产品，来满足高端客户的需求。Standard spectrum will be changed with color temperature and  there is difference between standard spectrum and SDCM even  for one chip. The general photoelectric analysis system will test  the color temperature range of tested chip automatically to get the  value of standard color temperature. The unit of color tolerance is  SDCM. The smaller, the better. The national standard is 7SDCM. BACH knows well the requirement of color temperature  consistency for the quality lighting and also faces the  phenomenon ofconsistency in terms of color temperature in  market. It is a headache for designers and the consumers. For this  purpose,BACH applies the LED chips at high consistency  (SDCM3) from the quality chips manufacturers on the products to  fulfill the requirement of high class.