Dielectric lens using a plurality of dielectric sheets on top of each other and injection molding manufacturing method of the same

摘要

A dielectric lens (1) is formed by laminating a plurality of dielectric sheets (1a-1d) having different diameters along a focal axis of the lens (1). The first dielectric sheet (1a) is formed by injecting a dielectric material in a molten state at a predetermined pressure and cooling and solidifying the dielectric material. Each successive dielectric sheet (1b-1d) is formed by injecting the dielectric material in a molten state on the preceding dielectric sheet (1a-1c) and cooling and solidifying the dielectric material, so that each successive dielectric sheet (1b-1d) and each immediately preceding dielectric sheet (1a-1c) are fusion-bonded to each other.