Optical OEM Systems by SwissOptic in Heerbrugg, Switzerland

Aspheres & Freeform Optics.

High Image Quality and Weight Reduction.

We develop and produce customer-specific aspherical lenses and freeform surfaces in small batches.


Aspheres are used in many optical systems since they provide precise light guidance as well as better performance with less optical elements. This allows for compact designs with less losses and lower weights, which is especially important for mobile devices.


We offer concave or convex aspheres with diameters of 12 to 350 mm with the highest accuracies and in various materials.


 Optical glass, quartz glass, Zerodur®, crystalline materials, metals


Dimensions and Forms 
Diameter (± tolerance)12–350 mm (±0.03)
Center thickness tolerance±0.01 mm
Free apertureup to 100 % of ∅
Local radius of curvature concave> 10 mm
Departure from best-fit-sphereup to a few millimeters


Surface Form Error 
Sagitta deviation (SAG, "Power")±0.3 µm
Irregularity (IRR, "PV")0.1 µm
Rotational invariant irregularity (RSI)0.05 µm
RMS irregularity (RMSi)0.02 µm
Slope error, 1 mm integration length0.06 mrad


Edge thickness difference3 µm
Decenter asphere to edge3 µm


Surface roughness Rq1 nm
Surface imperfection tolerances

3 x 0.063 (ISO 10110-7)
20–10 (acc. to MIL–Scratch/Dig)

Coatings (UV, DUV, VIS, NIR, IR)

AR, BBAR, HR mirrors,
customer-specific coating designs


Measurement Technique 
Surface form error interferometric

Zygo Verifire Asphere, CGH Technologies,
Tilted-wave interferometer

Surface form error tactileMarSurf LD 260 Aspheric, Form Talysurf PGI 1000
Surface roughnessZygo NewView 700 white light interferometer



In addition we have extensive finishing competence with regard to the production of high-precise freeform surfaces. Freeforms can be produced deterministically from planar and spherical areas with a deviation of up to 100 um from the best-fit area. The surface accuracy that can be achieved and measurability will be determined for each solution.

We would be pleased to discuss your requirements with you.

Our strengths are your benefits

Innovative measurement techniques

Manufacturing high-precise aspheres is closely related to nanometer-exact characterization of the surfaces processed. We measure the entire surface of the aspheres produced and use, depending on the application, the Verifire Asphere asphere interferometer, in-house designated computer-generated holograms or a newly developed tilted-wave interferometer in order to do so.


fine ciorrection of aspheres at SwissOptic site in Heerbrugg

Correction of aspherical components

rotation symmetric asphere

Rotationally symmetric aspherical component
Speed and flexibility

We flexibly adapt to your individual requests, have a very fast development process and employ proprietary correction methods.
The multi-step process chain we have developed to manufacture aspherical optics is made of different milling processes as well as computer-controlled polishing processes. This process chain can be adapted as needed. This allows us to fulfill your individual requirements quickly and flexibly.


asphere of-axis element

Off-axis asphere

grinding of aspheres at SwissOptic site in Heerbrugg

Processing aspherical components
Complete in-house processing chain

With us you get everything from a single source. We reproduce the entire processing chain in-house – the development, production, coating up to quality assurance and lens qualification. You profit from a high flexibility. Thus, your specific requirements can be fulfilled flexibly and rapidly.

Light-weight structures
  • Light-weight precision optics and components with the most modern CNC-controlled processing procedures
  • Dimensional accuracy in the small nm range (despite lower wall thicknesses)
  • After shaping: Stress-free etching of components in order to guarantee their long-term stability


processing of glass ceramic components at SwissOptic site in Heerbrugg

5-axis grinding center   

aspherical mirror with lightweight structure

Aspherical mirror with light-weight structure

Contact our specialists

Please choose your contact partner, contact us directly using our contact form or let us call you back.

Semiconductor Industry
Christian Schmitt
Fon +41 71 727-4790
christian.schmitt [at] swissoptic.com
Industrial Manufacturing, Security & Multimedia
Kenan Aygör
Fon +41 71 727-4011
kenan.aygoer [at] swissoptic.com
Industrial Manufacturing, Security & Multimedia
Josef Kurath
Fon +41 71 727-4385
josef.kurath [at] swissoptic.com
Robin Hitschfel
Fon +41 71 727-3176
robin.hitschfel [at] swissoptic.com
US Office for Photonics
Kevin Liddane
Fon +1 714 389-1756
kliddane [at] berlinerglasus.com

Let us call you back!

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