This article demonstrates a imaging spectrometer using Fery prism with large working distance and long slit length. Two spherical lenses are inserted between the double-convex lens and the Fery prism to enlarge the clearance distance. Using this method, an imaging spectrometer with a 37.2° field of view and F# 2.2 is designed, and the measured spectrum ranges from 400 nm to 900 nm. The performance is analyzed and evaluated. Laboratory testing results prove the excellent optical performance. This compact, cost-effective spectrometer with high performance and less stray light has a huge potential for broadband space exploration.

中文翻译：

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大工作距离长狭缝Fery成像光谱仪光学设计

本文展示了一种使用费里棱镜的大工作距离和长狭缝长度的成像光谱仪。在双凸透镜和费里棱镜之间插入两个球面透镜以扩大间隙距离。利用该方法设计了视场角37.2°、F#2.2的成像光谱仪，测量光谱范围为400 nm~900 nm。对性能进行分析和评估。实验室测试结果证明了其优异的光学性能。这种紧凑、经济高效的光谱仪具有高性能和更少的杂散光，在宽带空间探索方面具有巨大的潜力。