Infrared and Laser Engineering, Volume. 50, Issue 6, 20200433(2021)
Design of PGP imaging spectrometer with eliminating spectral line bending
Figures & Tables(11)
Fig. 4. Optical layout of improved PGP imaging spectrometer system
Table 1. Design parameters of PGP imaging spectrometer
View tableView in ArticleTable 1. Design parameters of PGP imaging spectrometer
Parameter Value Spectral range/nm 400-1000 Spectral resolution/nm 2.8 Object spaceNA 0.18 Slit length/mm ≥9 Image width (spectral)/mm ≤6.2 Grating frequency/lp·mm−1 360
Table 2. Parameters of the improved PGP component
View tableView in ArticleTable 2. Parameters of the improved PGP component
Parameter Value Bragg wavelength/nm 650 Central wavelength/nm 700 Vertex angle of the first prism/(°) 1.91 Vertex angle of the second prism/(°) 14.95 Prism material H-K9L Grating material B270 Collimating lens focal length/mm 26 Off-axis slit position/mm 2.6
Table 3. Allowable tolerance of optical system
View tableView in ArticleTable 3. Allowable tolerance of optical system
Parameter Value Index 0.0003 Abbe 0.5% Radius/fr 2 Thickness/mm 0.02 Decenter (surface and element)/mm 0.01 Tilt (surface and element)/(') 0.5 Irregularity 0.25
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Zhikun Wu, Entao Shi, Yongmei Wang. Design of PGP imaging spectrometer with eliminating spectral line bending[J]. Infrared and Laser Engineering, 2021, 50(6): 20200433
Paper Information
Category: Optical design
Received: Nov. 6, 2020
Accepted: --
Published Online: Aug. 19, 2021
The Author Email: Entao Shi (set@nssc.ac.cn)
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