Optical Element
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Axicons
An axicon, also known as a rotationally symmetric prism, is a lens that features one conical surface and one plano surface.
An axicon, also known as a rotationally symmetric prism, is a lens that features one conical surface and one plano surface. They are commonly used to create a beam with a Bessel intensity profile or a conical, non-diverging beam. When converting a collimated beam into a ring, the plano side of the axicon should face the collimated source.