Customer References

Our customers success is our motivation.

Customer satisfaction has top priority for asphericon. The customized translation of your project requirements into reality is therefore focus of our daily work. We will be pleased to provide you with your challenging designs, sophisticated materials and complex requirements. We are proud to provide over 600 customers in science and industry with our innovative solutions worldwide.

The following is a small selection of projects that we have successfully implemented together with our customers. Do you have a project idea and looking for a suitable partner? Feel free to contact us!



Aspheres/Spheres for Sentinel-4 satellite

Customer Profile Jena-Optronik

  • Specialist for optoelectronic instruments and sensors for aerospace
  • Founded in 1991
  • 200 employees at company headquarters in Jena
  • System supplier, among others for ESA, NASA and Boeing
Project Details

  • Satellite Sentinel-4 (part of the Copernicus Earth Observation Program) provides data on trace gases in the atmosphere from 2022 onwards
  • Development of two high-resolution spectrometer by Jena-Optronik for use in satellites
  • Production of lenses for the spectrometers by asphericon


Project Requirements

  • Developing and manufacturing lenses to
    withstand extreme conditions in space
  • Through development work and complex test procedures with demanding materials (e.g., CaF2)
  • Spheres and aspheres with diameters of 50 mm to 80 mm, a spectral resolution of 0.12 to 0.5 nm, and Ångstrom polish roughness values of 5 Å

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University of Bonn – Institute for Applied Physics

Precision aspheres for fluorescence microscopy

Customer Profile University of Bonn

  • Founded in 1818
  • About 36,000 students (2016)
  • Institute of Applied Physics researches in the fields of quantum technology and quantum optics


Project Details

  • Investigation of the imaging of cold cesium atoms, enclosed in optical gratings
  • Development of a fluorescence microscope for obtaining quantum information of individual atoms
  • asphericon supplies lenses for the high-aperture lens with NA = 0.92
Project Requirements

  • Development and production of unique aspheres that can be used in ultra-high vacuum under severe temperature fluctuations
  • Production of a sophisticated lens design with Strehl = 0.99


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Freeform Optics fo+

Freeform for a thermographic system

Customer Profile Freeform Optics fo+

  • Merging of eight Thuringian Photonics companies and two research institutes
  • Project start: 2014
  • Advancement of all value-added stages in development and marketing of freeforms



Project Details

  • Project goal: Distribution of freeform systems for national and international customers
  • Development of methods for processing  freeform surfaces on various materials (UV, VIS, IR) by asphericon
  • Development of a germanium monolith for simplified positioning of IR optics (e.g. in thermographic systems)
Project Requirements

  • Optical design requirements: preservation of original image quality while simultaneously reducing size of the system (Space saving and weight savings of up to 50%)
  • Production requirements: correct positioning (position, tilting) of all optical surfaces, simultaneous measurement of all degrees of freedom with respect to the reference structures
  • Optimization of the entire process chain considering “Design to cost” and “Design to manufacturing”
  • Preparation of guidelines for the description of freeforms (DIN ISO 10110-19)

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CREOL College of Optics and Photonics

Flat-field illumination for quantitative fluorescence imaging

Customer Profile CREOL

  • Foundation: 1987 as Center for Research and Education in Optics and Lasers at the University of Central Florida
  • Offering interdisciplinary graduate programs leading to M.S. and Ph.D. degrees in Optics and Photonics


Project Details

  • Quantitative analyses in laser-based wide-field fluorescence microscopy are highly challenging because of uneven illumination of slides by Gaussian profiles
  • Further development of a laser-based microscope set-up using beam shaping elements for uniform illumination by CREOL
  • a|TopShape and a|BeamExpander provided by asphericon


Project Requirements

  • Uneven illumination leads to irregular activation of molecules: the further from the center of the illumination, the lower the fluorescence
  • Stitched images lose their validity due to darkened borders
  • a|TopShape and a|BeamExpander enable Gaussian beams to be transformed into flat-top profiles, thus ensuring uniform illumination of the microscope slide
  • Homogeneity > 95%

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