In industrial flame detectors, the optical window is more than just a protective cover.
It must protect the sensor while maintaining reliable optical performance in demanding environments.
Sapphire is often selected because it offers:
• Excellent scratch and wear resistance
• High mechanical strength
• Good thermal and chemical stability
• Transmission from UV through visible and into the IR
• Long-term durability in harsh industrial environments
Depending on the detector design, sapphire windows can also be combined with AR coatings or spectral filters for specific detection bands.
For flame detection, the right window is not only about transparency — it’s about keeping the optical path reliable over time.
Developing a flame detector or upgrading an existing optical design? We can support custom sapphire windows from prototype to production.
