成像光谱仪是新型多光谱遥感器，它具有获得地面景物更丰富光谱信息的特点。无论采用滤光片分光还是色散元件分光，都不同程度地存在光谱和空间的混杂（混光）。文中分析成像光谱仪“混光”特性，提出保障系统光谱特征和空间特性的判据。 Imaging spectrometers are new multispectral remote sensors that have the benefit of obtaining a richer spectrum of information on ground objects. Spectral and spatial hybrids (mixed light) exist to varying degrees regardless of the spectral or spectral components of the filters. In this paper, we analyze the “mixed light” characteristic of imaging spectrometer, and put forward the criterion of ensuring the spectral characteristics and the spatial characteristics of the system.