Fig. 1. Model of stimulated fluorescence oil film thickness measurement in wind tunnel

Fig. 2. Synthetic light intensity distribution on oil film plane

Fig. 3. Corresponding relationship between camera pixels and oil film micro-elements when model is translated

Fig. 4. Corresponding relationship between camera pixels and oil film micro-elements when model is tilted

Fig. 5. Experimental device and principle. (a) Optical system; (b) Schematic diagram of imaging lightpath

Fig. 6. Relative error curve of peak fluorescence intensity under different error conditions. (a) Model translation; (b) model rotation

Fig. 7. Relationship between measured values and theoretical values of peak fluorescence intensity when model moves back and forth