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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.
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- Minimization of aberrations
- Efficiency increase
- Reduction of the total number of optical components
- Reduction of the weight of optical systems
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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.
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asphericon manufactures according to RoHS and REACH regulations which is guaranteed by appropriate certificates.
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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 -
Slightest shape deviations
High-quality coatings -
Precision that exceeds standards
All from a single source -
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| 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 |
📎 Download Production capabilities
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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. asphericons StockOptics Acylinder feature the following specifications:
- Outstanding surface form deviation of RMSi ≤ 0.5 µm
- Ideal 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 -
Fast availability and short delivery times
High-quality coatings -
Standardized or individual
Optical design files -
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| Product Code | RMSi [nm] | Edge Thickness [mm] | Size [mm] | EFL [mm] | NA | f/d | WD [mm] | λDesign [nm] | Material | Coating | Price uncoated | Price coated | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| CHL10-08-P-U | 500 | 0.9 | 10x10 | 8 | 0.54 | 0.8 | 6.3 | 780 | S-LAH64 | A / B / C | 345.00 | 402.00 | Quote |
| CHL12-10-P-U | 500 | 2.3 | 12.5x12.5 | 10 | 0.55 | 0.8 | 7.2 | 780 | S-LAH64 | A / B / C | 403.00 | 459.00 | Quote |
| CHL15-12-P-U | 500 | 1.8 | 15x15 | 12 | 0.54 | 0.8 | 9.2 | 780 | S-LAH64 | A / B / C | 431.00 | 491.00 | Quote |
| CHL18-15-P-U | 500 | 2.3 | 18x18 | 15 | 0.53 | 0.83 | 11.6 | 780 | S-LAH64 | A / B / C | 461.00 | 542.00 | Quote |
| CHL20-18-P-U | 500 | 2.8 | 20x20 | 18 | 0.49 | 0.9 | 14.3 | 780 | S-LAH64 | A / B / C | 489.00 | 570.00 | Quote |
| CHL25-20-P-U | 500 | 2.2 | 25x25 | 20 | 0.54 | 0.8 | 15.8 | 780 | S-LAH64 | A / B / C | 519.00 | 600.00 | Quote |
| CHL30-26-P-U | 500 | 2.2 | 30x30 | 26 | 0.52 | 0.87 | 21.5 | 780 | S-LAH64 | A / B / C | 663.00 | 780.00 | Quote |
| CHL45-32-P-U | 500 | 2.1 | 45x45 | 32 | 0.61 | 0.71 | 24.7 | 780 | S-LAH64 | A / B / C | 867.00 | 1129.00 | Quote |
| CHL50-40-P-U | 500 | 3.4 | 50x50 | 40 | 0.55 | 0.8 | 32.1 | 780 | S-LAH64 | A / B / C | 925.00 | 1186.00 | 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%, 1000-1500 nm, AOI=0° |
Acylinder from asphericon
With standardized or individual coatings