In this article, a multilayer lens antenna with low profile characteristics is proposed for 220 GHz terahertz multibeam applications. The lens structure consists of an inverted Fresnel lens and a ...

In this paper, we present the design of a focusing dielectric lens, which is based on the concept of a Fresnel step lens. The concept and design of the lens is introduced. Different lenses are ...

The fact is I like these lenses a lot for their size, cost, weight, stabilization and (corrected) image quality. I do wish Canon would embed correction profiles in its RAW files, but that aside, these ...