Some of the data points in figures 2 thru 4 were taken from 7 micron films and also in 5 micron films which because of gradients behave more like 4 micron films. The positions of maxima and minima remained the same for both films. Computed model with overlay of normalized experimental data points taken from 35 samples. Computed model for 90 degree turn internally with some data points normalized and overlaid. 1.2 Reflection proofs of a low n in DCG Figure 5 shows what turned out to be the most conclusive and easiest to demonstrate proof.
Conformal reflectors have an angular spectral bandwidth that varies widely with n.
The small straight horizontal line is the locus of external incident angles where no P light is reflected and runs from 64 to about 85 degrees. Computed angular dispersion curves for conformal reflectors with bulk n ranging from 1.54 to 1.27 overlaid with measured data. Internal angles remain constant Figure 6. Graphical representation of the behavior of a reflector if original exposure conditions prevailed and below it the behavior due to low n and expansion of the film. Figure 6 illustrates graphically what occurs at an n of 1.27 and what would have to occur at any n above 1.41 where total internal reflection would result whenever internal angles reached 90 degrees.