BROAD BAND ANTIREFLECTION COATING AND METHOD OF MAKING SAME

摘要

A coated article (3) includes a broad band antireflection (AR) coasting that utilizes aluminum oxynitride (AlOxNy) (5) in the medium index (index refraction "n") layer of the coating. In certain example embodiments, the coating may include the Following layers from the glass substrate outwardly: aluminum oxynitride (AlOxNy) medium index layer/high index layer/low index layer (5/7/9). In certain example embodiments, depending on the chemical and optical properties of the low and high index layers and the substrate, x and y of the aluminum oxynitride (AlOxNy.) of the medium index layer can be selected to optimize the overall performance of the broad band antireflection coating.