GENERALIZED COVERAGE DIAGRAMS 



149 



eo 



60 



CHART 2 



REFLECTION G0EFFIC1ENT = -I 



CONSTANT GSADIENT OF REFRACTIVE INDEX 



Figure 18. Generalized coverage diagram for r = 64. (See Figure 15.) 



Figure 19. Generalized coverage diagram for r = 64. (See Figure 15.) 



