Plano-convex axicon conical lens
Altechna Co. Ltd.

An axicon will convert a parallel laser beam into a ring. Using axicon together with a spherical lens will produce an annular focus for a hole drilling application. An axicon will create a non diffractive Bessel beam. This feature offered enhanced optical guiding, which was previously limited to the Rayleigh range of the Gaussian beam. High-order Bessel beams offer distinct advantages over other hollow light beams for atom guiding.

Features:
* Produces a line image along the axis from a point light source or non diffractive Bessel beam
* Available diameter up to 70mm
* Plano Convex, Plano Concave and Double Convex available
* Various AR coatings are available for all these lenses.

Standard specifications:
Material BK7, UVFS
Diameter Tolerance +0.0, -0.15 mm
Thickness Tolerance +/-0.1 mm
Edge thickness 3.5 mm. Available down to 2 mm
Apex angle 90
Clear Aperture >90%
Apex angle Tolerance +/-0.5
Surface Figure L/4 @ 632.8 nm
Surface Quality 40-20 scratch & dig
Design wavelength 632.8 nm
AR coatings None.