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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
Products
Specifications
Brochures
Description
Material
Diameter
Apex Angle
Angle
Coating
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Precision Plano-Convex Axicons
Code Material Diameter Apex Angle Angle Coating Price Delivery Add to cart
131-1290 UVFS Ø 25.4 mm 90° 45° Uncoated 435 $ 4 - 5 days
131-1230 UVFS Ø 25.4 mm 130° 25° Uncoated 396 $ 4 - 5 days
131-1240 UVFS Ø 25.4 mm 140° 20° Uncoated 396 $ 4 - 5 days
131-1260 UVFS Ø 25.4 mm 160° 10° Uncoated 396 $ 4 - 5 days
131-1265 UVFS Ø 25.4 mm 165° 7.5° Uncoated 396 $ 4 - 5 days
131-1270 UVFS Ø 25.4 mm 170° Uncoated 396 $ 4 - 5 days
131-1275 UVFS Ø 25.4 mm 175° 2.5° Uncoated 396 $ 4 - 5 days
131-1276 UVFS Ø 25.4 mm 176° Uncoated 396 $ 4 - 5 days
131-1277 UVFS Ø 25.4 mm 177° 1.5° Uncoated 396 $ 4 - 5 days
131-1278 UVFS Ø 25.4 mm 178° Uncoated 396 $ 4 - 5 days
131-1279 UVFS Ø 25.4 mm 179° 0.5° Uncoated 396 $ 4 - 5 days
131-1560 UVFS Ø 50.8 mm 160° 10° Uncoated 754 $ Request
131-1570 UVFS Ø 50.8 mm 170° Uncoated 754 $ Request
131-1576 UVFS Ø 50.8 mm 176° Uncoated 754 $ Request
131-1578 UVFS Ø 50.8 mm 178° Uncoated 754 $ Request
131-1579 UVFS Ø 50.8 mm 179° 0.5° Uncoated 754 $ Request
Standard Plano-Convex Axicons
Code Material Diameter Apex Angle Angle Coating Price Delivery Add to cart
130-0240 BK7 Ø 25.4 mm 140° 20° Uncoated 176 $ Request
130-1240 UVFS Ø 25.4 mm 140° 20° Uncoated 311 $ 4 - 5 days
130-0260 BK7 Ø 25.4 mm 160° 10° Uncoated 176 $ 4 - 5 days
130-1260 UVFS Ø 25.4 mm 160° 10° Uncoated 311 $ 4 - 5 days
130-0265 BK7 Ø 25.4 mm 165° 7.5° Uncoated 176 $ 4 - 5 days
130-1265 UVFS Ø 25.4 mm 165° 7.5° Uncoated 311 $ 4 - 5 days
130-0270 BK7 Ø 25.4 mm 170° Uncoated 176 $ 4 - 5 days
130-1270 UVFS Ø 25.4 mm 170° Uncoated 311 $ 4 - 5 days
130-0275 BK7 Ø 25.4 mm 175° 2.5° Uncoated 176 $ 4 - 5 days
130-1275 UVFS Ø 25.4 mm 175° 2.5° Uncoated 311 $ 4 - 5 days
130-0278 BK7 Ø 25.4 mm 178° Uncoated 176 $ 4 - 5 days
130-1278 UVFS Ø 25.4 mm 178° Uncoated 311 $ 4 - 5 days
130-0360 BK7 Ø 30 mm 160° 10° Uncoated 217 $ Request
130-1360 UVFS Ø 30 mm 160° 10° Uncoated 385 $ 4 - 5 days
130-0365 BK7 Ø 30 mm 165° 7.5° Uncoated 217 $ 4 - 5 days
130-1365 UVFS Ø 30 mm 165° 7.5° Uncoated 385 $ 4 - 5 days
130-0370 BK7 Ø 30 mm 170° Uncoated 217 $ 4 - 5 days
130-1370 UVFS Ø 30 mm 170° Uncoated 385 $ 4 - 5 days
Non-catalogue Standard Plano-Convex Axicons with AR Coatings
Code Material Diameter Apex Angle Angle Coating Price Delivery Add to cart
130-1240+3233-i0 UVFS Ø 25.4 mm 140° 20° AR/AR@1300-1700 nm, R<0.7% 381 $ 4 - 5 days
130-1270+3229-i0 UVFS Ø 25.4 mm 170° AR/AR@800-1200 nm, R<0.7% 379 $ 4 - 5 days
131-1270+3121-i0 UVFS Ø 25.4 mm 170° AR/AR@515+1030 nm, R<0.5 % 506 $ 4 - 5 days
130-1275+AR193+213 UVFS Ø 25.4 mm 175° 2.5° AR/AR@193+213 nm, R<1.5% 373 $ 4 - 5 days

 

  STANDARD
Plano-Convex Axicons
PRECISION
Plano-Convex Axicons
Material BK7, UVFS UVFS
Surface quality 60-40 scratch & dig (MIL-PRF-13830B) 40-20 scratch & dig (MIL-PRF-13830B)
Clear aperture 90% of the diameter 90% of the diameter
Diameter tolerance +0.00, -0.12 mm +0.00, -0.1 mm
Edge thickness 8 mm 3.5 mm
Angle tolerance ±0.5° ±0.05° (±3 arcmin)
Surface irregularity 1λ @ 633 nm λ/4 @ 633 nm
Apex rounding dia <3 mm dia <0.4 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 Conical 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.