Meta-optics: Thin and flat lenses with tremendous potential

Meta-optics, such as meta lenses, are a breakthrough in optical systems as they are thin, flat, and can bend and focus light similar to conventional lenses but with added advantages. Unlike conventional lenses that are bulky and curved, meta-optics are completely flat and planar, made up of tiny nano structures that manipulate light through changes in in-plane dimensions. This allows for constructive or destructive interference, enabling effective light control without the need for curved lenses. With meta surfaces, the goal is to create a completely flat and planar lens, reducing additional material and providing substantial benefits, such as simplicity and control. The term meta refers to meta materials, engineered materials that offer unique properties not found in conventional materials. Meta surfaces leverage these materials and consist of nano structures arranged periodically, allowing for control over the behavior of light.