Fig. 1. Schematic diagram of excitation and emission spectra of fluorescent material

Fig. 2. Schematic diagram of the working principle of filters

Fig. 3. Schematic diagram of excitation filter spectral types

Fig. 4. Schematic diagram of emission filter spectral types

Fig. 5. Schematic diagram of dichroic mirror spectral types

Fig. 6. Schematic diagram of deep blocking for excitation filter and emission filter

Fig. 7. Schematic diagram of optical coatings

Fig. 8. Schematic diagram of changes for filter structure

Fig. 9. Spectral schematic diagram of dual passband filter group

Fig. 10. Schematic diagram of wavefront distortion

Fig. 11. Schematic diagram of film stress