Research on Stability of Gray Value of Excited-State Fluorescent Oil Film Based on Variable Light Vector Angle

Figure 10

Distribution of sampling points. (a) Move 0.5 mm. (b) Move 1.0 mm. (c) Move 1.5 mm. (d) Move 2.0 mm. (e) Move 2.5 mm. (f) Move 3.0 mm. (g) Move 3.5 mm. (h) Move 4.0 mm. (i) Move 4.5 mm. (j) Move 5.0 mm.