| 摘要 |
A device having a broad-band, white incident angle range anti-reflection coating disclosed. The device includes a substrate having a first refractive index, at least one interference layer disposed on top of the substrate; and a gradient index optical layer. The gradient index optical layer has a gradient refractive index disposed on top of the at least one high index optical layer. The gradient index optical layer has a bottom refractive index at a bottom surface of the gradient index optical layer and a top refractive index at a top surface of the gradient index optical layer. The gradient refractive index of the gradient index optical layer decreases gradually from the bottom surface to the top surface. The at least one interference layer has a refractive index between the first refractive index of the substrate and the bottom refractive index of the gradient index optical layer. |
