Services  > Glass & ceramics machining  
Glass and ceramics machining
Huygens Optics is a single man operation, and is run by Jeroen Vleggaar. In my workshop I have all the necessary equipment to make parts from various glasses and ceramics such as NBK-7, S-BLS7, borosilicate glass, quartz, Al2O3, ZerodurŽ, CLEARCERAMŽ and CeranŽ. I can also machine materials used in infrared applications, like Germanium and Mg2F. All materials from suppliers such as Schott, Ohara and Heraeus can be ordered and processed into parts. A limited supply of materials is in stock.

Parts can range in complexity from simple to complex (with internal structures). Existing parts, such as optical filters, can be cut to the required dimensions. Parts used in mechanical applications can be modified in size, flatness, or parallelism.

The workshop contains all standard diamond tooling to make the following machining operations on glass and ceramics: drilling, milling, radius grinding (up to 130mm), sawing and fine grinding. Maximum object size for most operations is approximately 250mm. The standard dimensional accuracy is 0.1mm

Fine grinding can lower the RMS roughness of surfaces to around 0.3μm. The roughness can be further lowered by using pitch polishing. With this method, the surface roughness can be lowered to a few nanometers RMS and a peak to valey (P-V) flatness of 10 nanometers over distances of 250mm. Pitch polishing can also be used to produce spherical- and aspherial optical surfaces. With several common optical surfaces, a test report can be supplied.

Applications of glass and ceramics
As material classes, glass and ceramics have several unique properties that make them suitable for very demanding applications. Below you will find a list of properties that can generally be found in glasses and ceramics:
  • Low or zero coefficient of thermal expansion (CTE)
  • High mechanical stiffness (high Youngs modulus)
  • Good electrical isolation (high-voltage applications)
  • low outgassing and hermetic (high-vacuum applications)
  • Resistant to high temperatures
  • Chemically inert to solvents
  • Resistant to high-energy radiation
  • Wear resistant
Through a combination of the above properties, glass and ceramic parts can be used under conditions where plastics and metals do no longer meet the requirements. Which material is most suitable for a specific application is dependent on the specific conditions.

For more information on any of the above please contact me.

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