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Optical Coatings

The core competencies of Optics Balzers are design and manufacturing of high precision dielectric and metal thin film optical coatings. Optics Balzers' coatings are characterized by excellent spectral performance, low defect density and superior environmental stability. The coatings are produced with state-of-the-art evaporation and sputtering equipment platforms with process and product specific adaptations. The coating processes are both customized to the specific product requirements and optimized for high yield production. Precise monitoring of the coating processes ensures consistent and high quality in volume manufacturing.


  • Antireflection coatings
  • NIR blocking filters
  • UV blocking filters
  • Opaque chrome coatings
  • Matched ITO coatings

Low reflecting chromium coatings

Sensor internal reflections (ghost effects) can be eliminated by the use of an aperture on the sensor lid. Precision apertures are based on sputtered low reflectance chromium coating with a photolithography patterned clear aperture.

ITO coatings

Premium quality indium tin oxide (ITO) coatings with high transmission and electrical resistivity are based on dedicated sputtering processes. The ITO layer may be supplemented by dielectric layers for index matching or antireflective property of the coating.