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Acylinder

Precision polished aspherical cylinders.

Aspherical cylindrical lenses - Precision at the highest level

Acylinders, also known as aspherical cylinders, denotes cylindrical-surface-shaped lenses, the cross-section of which differs from the circular shape. In practice, plano-concave and plano-convex cylinders are used as well as those with a spherical or aspherical reverse. In contrast to a lens, an aspheric cylindrical lens does not concentrate incident light into one focal point, but along a focal line without the influence of spherical aberrations.

Advantages of acylinders

  • Minimization of aberrations
  • Efficiency increase
  • Reduction of the total number of optical components
  • Reduction of the weight of optical systems


Operation and fields of application of acylinders

Cylindrical lenses allow the creation of a line focus. By combining with a second acylinder an elliptical beam is generated. The stretching ratio is determined by the focal lengths of the two elements. The system shown on the right represents a cylinder telescope.


Acylinders are used, for example, in lighting technology, such as the anamorphic technique, in surveying technology, e.g. for measuring rails in rail traffic, for inspection in the production of printed circuit boards and for waste sorting (separation of different plastics). Acylinder are also used in measuring equipment, in spectroscopy, in laser scanners and in the creation of marking patterns in medical technology. A setup with two crossed acylinders, for example, allowes the compensation of the asymmetrical outputs from laser diodes, producing a circular beam. Further fields of application.


RoHS & REACH conformity

asphericon manufactures according to RoHS and REACH regulations which is guaranteed by appropriate certificates.

📎 Download RoHS Declaration

📎 Download REACH Declaration


Looking for individual acylinders?

Custom Acylinder

Based on a specially developed CNC grinding and polishing processes, asphericon manufactures acylinders with a surface form deviation (RMSi) of ≤ 0.5 µm. Together with our customers, we design and manufacture suitable aspherical cylinders for their applications from a large selection of optical glasses, from prototypes to series production. You can also benefit from the following specifications:

  • Customer-specific Acylinders
  • Available in different shapes: planoconvex, planoconcave, biconvex, biconcave
  • Outer shape can be userdefined
  • Excellent surface quality with roughness values as low as 5 Å
  • High-end coatings

Superior surface quality Superior surface quality - Slightest shape deviations
asphericon manufactures acylinders with a surface form deviation (RMSi) of ≤ 0.5 µm (Ideal line-focus without spherical aberration).
High-quality coatings High-quality coatings - Precision that exceeds standards
For a maximum optical radiation output, we offer the possibility of refining acylinders with high-quality coatings. From anti-reflection to metallic layers and wavelength-specific filter coatings, we coat in-house with reasonable delivery times.
All from a single source All from a single source - Complementary Services
Zum zuverlässigen Service von asphericon gehört neben hochwertigen Beschichtungen auch die Vermessung, Fassung und Charakterisierung von Azylindern für ein Maximum an Effektivität und Langlebigkeit Ihrer Optiken.

Custom Acylinder Specifications

Customized Acylinders*
Diameter up to 200x96mm
RMS irregularities (RMSi) 20 nm
Surface imperfections (Scratch/Dig) 20-10
Coating Customer specific
Laser damage threshold Customer specific
Measurement (optional) Full-surface interferometric
Delivery time From 3-4 weeks
*Best-fit-specifications

📎 Download Production capabilities


Speak to our team
Speak to our team
Sales Team Jena

StockOptics Acylinder

Benefit from our attractive selection of aspheric cylinders with a RMSi surface form deviation smaller than 0.5 µm. a|Acylinders are made from high-index-glass and can be especially used for laser applications. They are now also obtainable with high-precision mountings and convince with the following specifications:

  • Outstanding surface form deviation of RMSi ≤ 0.5 µm
  • deal line-focus without spherical aberration
  • Available with 3 standard coatings/customized coatings on request
  • Off-the-shelf delivery for short lead times
  • RoHS compliance

Off-the-shelf delivery Off-the-shelf delivery - Fast availability and short delivery times
The advantages of precision-manufactured of acylinder combined with the cost advantages of serial production: Acylinder from the StockOptics line can easily be ordered directly from stock via our webshop..
High-quality coatings High-quality coatings - Standardized or individual
asphericon manufactured optical coatings in the spectral range from UV to the near infrared range, from anti-reflective coatings to wavelength-specific filter layers, to suit your individual requirements.
Optical design files Optical design files - For free download
For all a|Acylinder we offer a selection of optical design files (CodeV, etc.) for free download. Plan your individual setup and convince yourself of the many application possibilities of our a|Acylinder.

Request a quote



Coating options*

AR-Coatings
A: RMAX <1.0%, RAVG ≤0.4%, 400-600 nm, AOI=0°
B: RMAX <1.0%, RAVG ≤0.4%, 600-1050 nm, AOI=0°
C: RMAX <1.0%, RAVG ≤0.4%, 1000-1600 nm, AOI=0°
* Custom coatings available upon request.

📎 StockOptics Catalog Europe 2024



Acylinder from asphericon
With standardized or individual coatings

Speak to our team
Speak to our team
Sales Team Jena
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