Customized filters and reflectors

Our modular approach allows customization of optical filters. We offer the following modules:

- Spectrum-tailored optical filters on sapphire windows and lenses for the VIS and NIR range. These filters are based on mutlimaterial stacks.
- Integration of ITO to further functionalize the optical filter (e.g., heat reflector or transparent window heating).
- Metal coatings for reflectors, as Al or Ag, including protection layers against oxidation.
- Structuring technologies for coatings (available inhouse), from cover masks to photolithography.
Our strength is the high level of customization, enabled by the modular approach and large inhouse technology portfolio.

Ultra-resistant antireflection coatings
In case optical windows are exposed to harsh environments, like sand, salt-water or dirt, the lifetime of the optical filter on the exposed-side of the sapphire window is critical. This is relevant for multiple defense applications as well as for rovers in aerospace industry.

We developed an optical material stack which is ultra-resistant against mechanical and chemical exposures, which is called SINI®. There are two configurations of SINI® available:

- Broadband VIS-NIR filter: Camera windows and (rifle)scopes
- Selective laser NIR filter: Laser visors and communication windows
Customer-specific filters are possible on request.