Axicon Lens

Conical lens, axicon includes a flat convex conical lens, a flat concave conical lens, and a biconvex conical prism. A flat convex conical lens can focus a laser beam into a laser ring, convert a parallel laser beam into a circular laser, and when combined with a spherical mirror, it will produce an angular focusing effect, making it very suitable for laser drilling. The cone lens of the frustum produces a non diffracting Bessel beam, which enhances the photoconductivity, while the photoconductivity of Gaussian beam in the Rayleigh range is limited.

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