Abstract
Imaging spectrometer has obtained wide development since rich feature information can be obtained by it; now, we focus on its high spectral resolution and miniaturization. In this paper, we design the Dyson imaging spectrometer system based on Fery prism. The average spectral resolution is 4.3 nm and the structure of the total length is 229 mm. It is a small, high-spectrometer imaging system. The front and rear surface of the traditional prism are plane, but the surfaces of the Fery prism are spherical, which can provide some optical power to realize imaging function and produce the dispersion effect. The Fery prism does not need to be placed in the parallel optical path, which simplifies the collimator lens and the imaging lens and are necessary in the prism spectrometer, making it possible to obtain a compact spectrometer. Full-spectrum transmittance of the prism is up to 94 %. Compared to the convex grating, the energy efficiency is greatly improved, and the free spectral range is wider, and its dispersion will not bring higher-order spectral aliasing problem. The small high spectrometer only includes two components. Its spectral range is from 400 to 1000 nm, covering the near-ultraviolet to near-infrared. The various aberrations of the typical spectrum are corrected. The spectrometer is excellent in performance.
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Acknowledgments
The authors appreciate the supports of the National Natural Science Foundation of China (Grant No. 61505220) and the Chinese academy of sciences, National Defense Science and Technology Innovation Fund Project (Grant No. CXJJ-15S156).
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Pei, L., Xiangli, B., Lv, Q. et al. Optical system design of the Dyson imaging spectrometer based on the Fery prism. Opt Rev 23, 695–702 (2016). https://doi.org/10.1007/s10043-016-0236-4
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DOI: https://doi.org/10.1007/s10043-016-0236-4