Fig. 1. Mathematical model of spectral reconstruction

Fig. 2. Transmittance curve of the film system after fitting

Fig. 3. Imaging module

Fig. 4. The quantum efficiency curve of the detector

Fig. 5. Monochromatic light source calibration

Fig. 6. Grayscale image of blue light source

Fig. 7. Grayscale image of green light source

Fig. 8. Blue spectrum curve of the first solution

Fig. 9. Blue spectrum reconstruction curve after spectral tuning

Fig. 10. 400~600 nm blue light spectrum curve

Fig. 11. Green spectrum curve of the first solution

Fig. 12. Green light spectrum reconstruction curve after spectral tuning

Fig. 13. 450~600 nm green light spectrum reconstruction curve