Conical lenses also often called an axicon or conic lens, a specially shaped lens has a surface, or at least one side, that is conical.
This kind of lens is different from traditional spherical or aspherical lenses.
It is mainly used for beam shaping, especially in laser physics for generating ring beams or adjusting the propagation characteristics of the beam.
Conical lenses are commonly used to generate beams with Bessel intensity distribution or tapered non-divergent beams.
When changing a collimated beam into a ring beam, the flat surface of the Conical lens should face the collimated light source.
Conical lenses can be made from a variety of optical materials, including glass and various transparent plastics, to suit different optical application needs.
We can customize it according to your technical requirements. Please feel free to contact us if you have any relevant needs.
Plano-convex axicons have one conical and one plano surface. Axicons can be defined by their apex angle.
| Material | BK7, UVFS |
| Surface quality | 60-40,40-20 scratch & dig (MIL-PRF-13830B) |
| Clear aperture | 90% of the diameter |
| Diameter tolerance | ±0.1 mm |
| Angle tolerance | ±0.5° |
| Surface irregularity S1 (conical) | ±2.5 micron |
| Surface irregularity S2 (flat) | λ @ 633 nm |
Can be customized according to your requirements