植被日光诱导叶绿素荧光是一种可以表征植被光合生产力的重要衡量指标。为了实现对植被日光诱导叶绿素荧光的广域精准探测，设计并研制了一种叶绿素荧光高光谱成像探测仪。该成像探测仪使用了基于棱镜-体相位全息透射光栅的全透射式光学系统，在高数值孔径（0.25）的基础上实现了高光学性能：可在20°视场和670~780 nm（可扩展至650~800 nm）工作波段实现1 mrad的空间角分辨率、0.3 nm的光谱分辨率和优于100的信噪比。由系统设计结果、样机测试结果和应用数据分析结果可知，样机完全满足设计要求。本仪器可为农林监测和碳循环观测提供重要的科学数据，并可作为陆地植被光合作用中有效的新型观测手段。

Solar-induced chlorophyll fluorescence of vegetation is an important parameter in evaluating plant photosynthesis. A hyper-spectral imaging spectrometer prototype is presented for the fluorescence observation of vegetation in a wide area. The main transmission optical system of the imaging spectrometer is based on the key dispersive element composed of prism and volume phase holographic transmission grating. This form could realize high performances under the high numerical aperture (0.25). The prototype has an angle spatial resolution of 1 mrad, a spectral resolution of 0.3 nm, and an signal-to-noise ratio better than 100 in the waveband of 670‒780 nm (it can be extended to 650‒800 nm) and the full field of view of 20°. The results of the design, test results of the prototype and analysis results of application data show that the imaging spectrometer can satisfy the requests of the design. The instrument can supply important scientific data for the agriculture monitoring and forests and carbon cycle observation, and it can be considered as a new observation method for the land vegetation photosynthesis.