Chinese Optics Letters, 2016, 14 (4): 042201, Published Online: Aug. 6, 2018
Analytical method to measure bending deformations in prismatic optical films Download: 787次
Figures & Tables
Fig. 2. Edge map (black color) with Hough lines identified (red color) in a prismatic film profile with a curvature of 20 m − 1 .
Fig. 3. The HT of the three-prism image of a prismatic film curvature of 20 m − 1 with the Hough peak identified. The red square shows the peaks of data in the Hough matrix and indicates ρ , the perpendicular distance from the origin to the line and θ is the angle at which the sum of the intensities in the image peaks.
Fig. 4. Angle θ obtained by HT related to the CPLG curvature. The graph legend shows the curvatures evaluated in m − 1 . Global changes in the prismatic angle related to the Hough peaks are shown in (a) and local changes in prism half-angle in (b).
Fig. 6. Light flux rate (rate of flux lost) scaled from 0 to 1.0 as a function of the curvature of a CPLG for several incidence angles. The graph legend shows incidence angles with regard to the prismatic film flat surface.
Berta García-Fernández, Antonio Álvarez Fernández-Balbuena, Daniel Vázquez-Moliní. Analytical method to measure bending deformations in prismatic optical films[J]. Chinese Optics Letters, 2016, 14(4): 042201.