Spherical Lenses

High-precision Singletts, Doublets and Triplets

Spheres - Lenses with achromatic function

Spherical lenses, also known as round optics or spheres, are used to collect, diverge or focus light. They are used for various technological applications, for example in medical technology and semiconductor industry, or as a component in achromatic lens systems. Achromatic lenses consist of two to three lenses cemented together. This combination generally serves to reduce spherical aberration.

Spheres from asphericon

Thanks to modern manufacturing technologies, we are able to produce spherical lenses of high quality and from different materials. In addition to optical glasses, these include crystals such as germanium and silicon, metals, PMMA and IR materials. For ideal use, we also finish your spheres with high-quality optical coatings, depending on the application. asphericon manufactures spheres with diameters from 5 mm to 300 mm and shape accuracies down to the nanometer range, customized to your requirements.

Advantages at a glance

  • Customized lenses
  • Materials: Glass | Fused Silica | PMMA | Metals | IR materials
  • High quality customized coatings (spectral range from 190 nm to 5.1 µm)
  • Reasonable delivery times
  • RoHS conformity

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Specifications spheres

Standard Quality Precision Quality High-End-Finishing
Diameter 5 – 300 mm 5 – 300 mm 5 – 300 mm
Diameter Tolerance ± 0,1 mm ± 0,1 mm ± 0,01 mm
Center thickness 2 > CT < 100 mm 2 > CT < 100 mm 2 > CT < 100 mm
Center thickness tolerance ± 0,1 mm ± 0,03 mm ± 0,01 mm
Tolerance of radius ± 0,1 % ± 0,01 % ± 0,01 %
Tilt 300" 30" 15"
Surface irregularity (fringe) 0,8 0,3 0,3
Surface quality (scratch/dig) 60 - 40 40 - 20 20 - 10
Surface roughness Rq 2 nm 1,5 nm 0,5 nm
Coating customer-specific customer-specific customer-specific
Material customer-specific customer-specific customer-specific
RoHS & REACH Conformity certified certified certified

Spheres from the technology leader

Product range of spherical optics

Our product range includes the production of the following types of spheres:

  • plan-convex/plan-concave lenses
  • bi-convex/bi-concave lenses
  • achromatic singlets, doublets and triplets

asphericon offers spherical lenses in the following processing stages:

  • polished,
  • coated
  • puttied
  • edge-painted
  • laser engraved

and in a wide variety of geometries:

  • round,
  • rectangular,
  • with bevels, bores or steps.

More about spherical optics can be found in our company brochure.

Individual spherical lenses

Reference projects

Telescope lenses for high-energy laser PHELIX
For more than 20 years, research has been carried out at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt on the development of a high-power, high-energy laser for fundamental research in the field of high-energy physics. The result is PHELIX (short for Petawatt High Energy Laser for Heavy Ion Experiments), which is used to investigate fundamental processes in plasma physics, astrophysics and atomic physics.
Optics for Sentinel-5
For the analysis of atmospheric components such as O3, NO2, SO2, etc., ESA initiated the Sentinel-5 project together with the European Union. A central objective of the missions spectrometer system, which is expected to be deployed on the MetOp-SG A spacecraft from 2022 onwards, is the monitoring of trace gas concentrations. asphericon manufactured durable optics for one of the subsystems of Sentinel-5.
Optics for NIORD imager of NorSat-4 satellite
Der NorSat-4 Satellit, entwickelt vom SFL, FFI und Safran Reosc, ist ein wichtiger Schritt zur Verbesserung der maritimen Sicherheit und Früherkennung potenzieller Gefahren. asphericon fertigte sphärische und asphärische Optiken unterschiedlicher Größe für den NIORD-Imager.

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