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Conical Lenses (Axicons)

Conical Lenses (Axicons)

Axicons are used to transform the collimated light into a ring or to create an approximation of a Bessel beam.

from 176 $
delivery Estimated delivery time: 4 - 5 days
Qty discount: 5-9 pcs. of the same item - 5% OFF! 10+ pcs. 10% OFF!
Products
Specifications
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Description
Material
Diameter
CT
ET
Apex Angle
Coating
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Standard Plano-Convex Axicons
Code Material Diameter CT ET Apex Angle Coating Price Delivery Add to cart
130-0240 BK7 Ø 25.4 mm 12.6 mm 8.0 mm 140° Uncoated 176 $ 4 - 5 days
i 130-1240 UVFS Ø 25.4 mm 12.6 mm 8.0 mm 140° Uncoated 311 $ 4 - 5 days
i 130-0260 BK7 Ø 25.4 mm 10.2 mm 8.0 mm 160° Uncoated 176 $ 4 - 5 days
i 130-1260 UVFS Ø 25.4 mm 10.2 mm 8.0 mm 160° Uncoated 311 $ 4 - 5 days
i 130-0265 BK7 Ø 25.4 mm 9.7 mm 8.0 mm 165° Uncoated 176 $ 4 - 5 days
i 130-1265 UVFS Ø 25.4 mm 9.7 mm 8.0 mm 165° Uncoated 311 $ Request
i 130-0270 BK7 Ø 25.4 mm 9.1 mm 8.0 mm 170° Uncoated 176 $ 4 - 5 days
i 130-1270 UVFS Ø 25.4 mm 9.1 mm 8.0 mm 170° Uncoated 311 $ Request
i 130-0275 BK7 Ø 25.4 mm 8.6 mm 8.0 mm 175° Uncoated 176 $ 4 - 5 days
i 130-1275 UVFS Ø 25.4 mm 8.6 mm 8.0 mm 175° Uncoated 311 $ 4 - 5 days
i 130-0278 BK7 Ø 25.4 mm 8.2 mm 8.0 mm 178° Uncoated 176 $ 4 - 5 days
i 130-1278 UVFS Ø 25.4 mm 8.2 mm 8.0 mm 178° Uncoated 311 $ Request
i 130-0360 BK7 Ø 30 mm 10.6 mm 8.0 mm 160° Uncoated 217 $ Request
i 130-1360 UVFS Ø 30 mm 10.6 mm 8.0 mm 160° Uncoated 385 $ Request
i 130-0365 BK7 Ø 30 mm 10.0 mm 8.0 mm 165° Uncoated 217 $ Request
i 130-1365 UVFS Ø 30 mm 10.0 mm 8.0 mm 165° Uncoated 385 $ Request
i 130-0370 BK7 Ø 30 mm 9.3 mm 8.0 mm 170° Uncoated 217 $ Request
i 130-1370 UVFS Ø 30 mm 9.3 mm 8.0 mm 170° Uncoated 385 $ Request
Plano-Convex Axicons with AR Coatings
Code Material Diameter CT ET Apex Angle Coating Price Delivery Add to cart
i 131-1230+ARB825 UVFS Ø 25.4 mm 9.4 mm 3.5 mm 130° AR/AR@650-1100 nm, R<0.7% 476 $ 4 - 5 days

 

  STANDARD
Plano-Convex Axicons
Material BK7, UVFS
Surface quality 60-40 scratch & dig (MIL-PRF-13830B)
Clear aperture 90% of the diameter
Diameter tolerance +0.00, -0.12 mm
Angle tolerance ±0.5°
Surface irregularity S1 (conical) ±2.5 micron
Surface irregularity S2 (flat) λ @ 633 nm
Apex rounding dia <3 mm
AR coatings R<0.2% per surface for any specified wavelength in the range 350-1600 nm

BBAR coatings with R<1% per surface are also available for the following ranges:
UV @250-400 nm
VIS @ 400-700 nm
NIR ranges @ 700 – 1000 nm
IR range @ 1000-1700 nm 
EKSMA Optics Axicon Lenses
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  • Precision and standard grade axicons
  • Made of BK7 or UVFS
  • Range of cone apex angles: 140o to 179o
  • Coated axicons or axicons made from other optical materials can be supplied under request

Plano-convex axicons have one conical and one plano surface. Axicons can be defined by their apex angle.

 

Conical lenses are used to transform the light into a ring or to create an approximation of non-diffractive Bessel beam from collimated Gaussian beam in the near field.

 

A combination of axicons and spherical lenses can be used to convert a parallel laser beam into a thick-walled hollow "pipe" of light or to produce an annular focus (see images).

 

Axicons can be supplied with AR or BBAR coatings. Please send a request for a custom  product.