Fig. 1. Schematics of aberration. (a) Spherical reflector; (b) compensation using Schmidt corrector plate

Fig. 2. Diagram of Schimtt system

Fig. 3. Schematic of Schmidt corrector plate with zero defocus

Fig. 4. Schematic of Schmidt system with off-axis parallel light

Fig. 5. Design diagram and surface shape of Schmidt corrector plate in spectrometer. (a) Design diagram; (b) surface shape

Fig. 6. Optical design of aberration cancellation spectrometer based on Schmidt corrector plate

Fig. 7. Parameter settings of original spectrometer and bitmaps of light spots on image plane at different wavelengths. (a) Optical path in spectrometer; (b) bitmap at 350 nm; (c) bitmap at 550 nm; (d) bitmap at 700 nm

Fig. 8. Parameter settings of spectrometer with calibration plate and bitmaps of light spots on image plane at different wavelengths. (a) Results of ray tracing of spectrometer by ZEMAX based on Schmidt corrector plate; (b) bitmap at 350 nm; (c) bitmap at 550 nm; (d) bitmap at 700 nm