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.
Main features
Beam shaping: The most significant function of the Conical lenses is its ability to convert the incident beam into a beam of a specific shape, for example, converting a Gaussian beam into a ring beam.
Modulating beam propagation: By changing the wavefront of the beam, Conical lenses can affect how the beam propagates, for example, changing the focusing properties of the beam or creating a non-diffracted beam.
Optical material compatibility: Conical lenses can be made from a variety of optical materials, including glass and various transparent plastics, to suit different optical application needs.
Application areas
The unique optical properties of Conical lenses give them specific applications in many fields:
Laser Physics: In laser systems, Conical lenses are used to create ring-shaped beams, which are useful in some areas of laser processing, optical traps, and optical communications.
Optical imaging: In certain imaging techniques, such as annular illumination microscopy, Conical lenses are used to generate a specifically shaped beam to improve imaging quality.
Medical Optics: In medical diagnosis and treatment, especially laser surgery and photodynamic therapy, Conical lenses are used to precisely control the shape and energy distribution of light beams.
Optical Sensing: In optical sensor and photodetector applications, Conical lenses help achieve specific beam shapes and propagation characteristics to improve sensor performance or sensitivity.
Advantage
Highly flexible beam control: Tapered lenses provide an effective means to adjust and control the shape and propagation behavior of the beam to meet the needs of specific applications.
Compatible with a variety of laser wavelengths: Depending on the choice of material, tapered lenses can be used with beams of different wavelengths, including ultraviolet, visible, and infrared.
Custom Design: Tapered lenses can be custom designed to meet the needs of specific applications for optimal optical performance.
BOTE can process Conical lenses with a diameter of 10-300mm. We can customize it according to your technical requirements. Please feel free to contact us if you have any relevant needs.