The currently available area array imaging spectrometer fails to provide high spectral resolution and fast imaging under a wide field of view (FOV). Therefore, this study proposes an integral field imaging spectrometer (IFIS) that uses an image-space telecentric lens (ISTL), a mask, and lenslet array (MLA) as the front structure of the system. The influence of their structural parameters on the optical performance of the system is analyzed by establishing ISTL and MLA models. We selected suitable structural parameters to establish the imaging spectrometer, and provided an experimental demonstration of the system. Our system can achieve a 1.6 nm spectral resolution in a wide FOV of 48.8°. Compared with other spectrometer designs, our system is characterized by a simple structure, wider FOV, and higher spectral resolution.

当前可用的面阵成像光谱仪无法在宽视场（FOV）下提供高光谱分辨率和快速成像。因此，本研究提出了一种积分像场成像光谱仪（IFIS），它使用像空间远心镜头（ISTL），光罩和小透镜阵列（MLA）作为系统的前部结构。通过建立ISTL和MLA模型，分析了其结构参数对系统光学性能的影响。我们选择了合适的结构参数来建立成像光谱仪，并提供了该系统的实验演示。我们的系统可以在48.8°的宽FOV中实现1.6 nm的光谱分辨率。与其他光谱仪设计相比，我们的系统具有结构简单，视场宽和光谱分辨率高的特点。