介绍了一种光谱可调光源。该光源可以用来实现各种各样的光谱功率分布。一个光谱可调光源系统的具体设计包括 成千上万个高功率LED，其波段可覆盖整个可见光光谱。光谱可调光源具有极大的现实意义，它除了可以对光学遥感器进行定标之外，还可以用于光度计和辐 射度计的检测校准。通过模拟不同的光照条件，可以对材料特性及物体反射率进行评估。另外，该光源也可用于展示。

A spectrally tunable light source is presented. The light source can be used to create a wide variety of spectral power distribution. The design of a spectrally tunable light source system includes thousands of high power light emitted diodes (LEDs) across the whole visible spectral region. Besides being used to calibrate optical remote sensors, the spectrally tunable light source can be used for the detection calibration of photometers and radiometers. By using this system to simulate different lighting conditions, the material property and object reflectivity can be assessed. In addition, this system can also be used in displays.