StockOptics Aspheres

The StockOptics Aspheres product range includes an exclusive selection of standardized optics. Choose between asphericon a|High-NA, a|Low-NA and a|UV-grade fused silica. Thanks to CNC polishing and grinding this aspheric lens meets the highest demands on production quality and tolerance:

  • Precision polished Aspheres (a|High-NA, a|Low-NA and a|FusedSilica)
  • CNC grinding & polishing for superior surface roughness
  • Materials: S-LAH64, N-BK7, FusedSilica
  • Diameter: 10 mm to 100 mm
  • Off-the-shelf delivery for short lead times
  • Files for optical design and drawings available (Zemax, CodeV, OSLO, VirtuelLabTM, Step)


BeamTuning App

Discover our BeamTooling App and calculate important optical properties of StockOptics aspheres online.

App Features:

  • Illustration of a|Asphere properties used at a wavelength other than the design wavelength
  • Calculation of effective focal length (EFL) and working distance (WD)
  • ... and further calculations of the BeamTuning range

The app is available in the Apple and Google App Stores.

Get it on Google Play

Download on the App Store

You can also use the web version for calculation.


 a|High-NAa|Low-NAa|UV-grade fused silica
Diameter10-50 mm12,5-100 mm12.5-50 mm
Diameter Tolerance+0/-0.05 mm+0/-0.05 mm+0/-0.05 mm
λDesign780 nm780 nm285 nm
MaterialS-LAH64N-BK7Fused Silica
Surface Form Deviation (RMSi)≤0.5 µm≤0.5 µm≤0.3 µm
EFL Tolerance≤0.1 %≤0.1 %≤0.1 %
Surface Imperfections (Scratch/Dig)60 - 4060 - 4020 - 20
Center Thickness Tolerance± 0.05 mm± 0.05 mm± 0.05 mm
Clear Aperture≥ 90 %≥ 90 %≥ 90 %

Advantages of StockOptics Aspheres

The advantages of precision-made aspheres combined with the cost advantages of serial production: StockOptics aspheres can be ordered directly from stock via the webshop. Benefit from fast availability and short delivery times.

Perfectly aligned, selected a|Aspheres (diameter 12.5 mm to 25.4 mm) are also available with high-precision mounts and a decentration of < 10 µm. Mounts labeled with the lens specifications allow uncomplicated use in a wide range of applications.

Increase the efficiency of your optical components with high-quality coatings. asphericon manufactures optical coatings in the spectral range from UV (190 nm) to the near infrared (5 µm) with reasonable delivery times and reliable service.

Our StockOptics aspheres are available in the webshop with the following standard coatings:

A-Coating: RMAX<1.0%, RAVG≤0.4%, 400-600 nm, AOI=0°
B-Coating: RMAX<1.0%, RAVG≤0.4%, 600-1050 nm, AOI=0°
C-Coating: RMAX<1.0%, RAVG≤0.4%, 1000-1600 nm, AOI=0°
X-Coating: RMAX<1.0%, RAVG≤0.4%, 240-380 nm, AOI=0

The corresponding measured curves are available on request.

For a seamless planning of your optical set-up, asphericon also provides the appropriate optical design files (CodeV, etc.). Convince yourself of the unique accuracy of our a|Aspheres and get the design files free of charge in our webshop.

Precision polished aspheres with short delivery times.

asphericon Webshop

Contact Person
Sales Team

+49 (0) 3641 3100 560