Figure 4
(a) Image quality on the cloaking chip with different viewing angles. We get 13 × 12 output images by adjusting the lens behind the chip for continuously multi-directional angles and aligning the output image with the corresponding directions. (b) Normalized energy angular distribution. An elliptical-like region spanning 8.0° laterally and 6.7° vertically outlines the tolerance for viewing angle in energy distribution.
