
Custom
Acylinder
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
Specifications
Customized Acylinders* | |
---|---|
Diameter | up to 200x96 mm |
RMS irregularities (RMSi) | 40 nm |
Surface imperfections (Scratch/Dig) | 20-10 |
Coating | Customer specific |
Laser damage threshold | NA |
Measurement (optional) | Full-surface interferometric |
Delivery time | From 3-4 weeks |
*Best-fit-specifications
Advantages of Custom Azylinders
Based on the specially developed technology for CNC grinding and polishing processes, asphericon is able to produce acylinders with minimal surface form deviations (RMSi ≤ 0.05 µm). Matching your individual requirements, we manufacture high-quality acylindrical optics of highest accuracy with best imaging properties.
Aspherical cylinder optics have a focus line instead of a focal point due to their geometry. Free of spherical aberrations, best optical imaging qualities can be achieved. Benefit from the unique accuracy and precision of asphericon's customized acylinders.
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.
In addition to high-quality coatings, asphericon's reliable service also includes optical measurement for maximum effectiveness and longevity of your optics. Convince yourself of the high accuracy of our measuring systems. For a simple combination with other mounted optical components, we will be happy to add a high-quality mount to your optical components.

Cylindrical optics for Sentinel-5
Customer Reference
Project Details
For investigating global warming or for weather forecasts, analysis of atmospheric components is essential. For the collection of data on level-2 products (such as O3, NO2, SO2), the Sentinel-5 project was initiated within the Copernicus program of ESA and the European Union. The mission's central component is the monitoring of trace gas concentrations. The system around Sentinel-5 consists of five spectrometers for an application range from UV to shortwave IR. asphericon manufactured ultra-precise rotationally symmetric spheres and complex cylinders for one of the spacecraft's SWIR subsystems. The optical components are made of durable materials, have different diameters and geometric shapes. asphericons High-End Finishing technology allowed irregularities of ≤ 1fr and surface roughnesses ≤ 1 nm. Short wavelength spatial frequencies could be minimized.
Project Realisation
- Manufacturing of rotationally symmetric spheres & complex cylindrical optics from fused silica, silicon & zinc sulfide
- Lens specifications: Diameter 87.7 - 129.4 mm, concave/concave, convex/concave and convex/convex
- Irregularities of ≤ 1fr and lowest surface roughness ≤ 1 nm
- Cutting of the optics into rectangular shapes to reduce the required space and weight
Looking for individual acylinders?
asphericon GmbH
Stockholmer Str. 9
07747 Jena
phone +49 (0) 3641 3100 500
fax +49 (0) 3641 3100 501
sales[at]asphericon.com