Freeform optics - systems of the future

Freeform optics without rotational symmetry allow the implementation of completely new concepts for optical systems. The use of freeform optics reduces the number of elements in an optical system, allowing smaller, lighter and more efficient systems. The design and production of freeform optics requires the highest level of precision.

Discover the advantages of freeform optics and systems that can be realized with asphericon's innovative technologies.

  • Unconventional shapes in all materials (also ceramics)
  • Lenses, mirrors, monolithical elements with diameters up to 300 mm
  • Multi-focal, compact systems
  • Excellent surface quality (up to at least RMSi 50 nm)
  • CGH-free measurement including all position tolerances (complete component)
  • Individual coating and mounting concepts

Together with regional partners, companies and research institutions, we have been working on the research project "Freefrom Optics Plus (fo+)" since 2014 to develop and distribute innovative freeform optics systems. Highlight of this cooperation so far is the awarding of the science prize "Research in the Group" by the Stifterverband der Deutschen Wissenschaft for innovative approaches to the manufacturing freeforms in 2018.

Discover our freeform optics system based on Alvarez lenses that can be used to compensate divergences of laser beams. The system convinces above all by its compact design. By means of a different surface shape, it is possible to vary the laser focus continuously. Another Alvarez system can be used in conjunction with asphericon's BeamTuning components to create square Top-Hat profiles. If you have any questions about our Alvarez lenses, please do not hesitate to contact us.

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Looking for freeform optics for a challenging project?

Individual request





High-End Finishing

Diameter8 – 300 mm4 – 300 mm1 - 150 mm
Diameter Tolerance± 0.1 mm± 0.01 mm 
Center Thickness2 - 60 mm2 - 60 mmfrom 0,5 mm
Center Thickness Tolerance± 0.1 mm± 0.05 mm 
RMS Irregularities (RMSi)0.75 – 0.3 µm0.09 µm0.1 µm
Surface Roughness2.0 – 3.0 nm1.5 – 2.0 nmup to 1 nm
Full-surface Interferometric  
Materialscustomer-specific (including ceramics)
Contact Person
Angela Eckstein

+49 (0) 3641 3100 560