The NBP3910-180nm Infrared Narrow Band Filter from SENBA is a high-precision optical component designed for selective infrared wavelength transmission in advanced sensing and analytical systems. Centered at 3910±50nm with a narrow bandwidth of 180±30nm, it delivers excellent spectral accuracy, making it ideal for chemical gas detection, infrared spectroscopy, and scientific measurement applications.
Fabricated using advanced thin-film coating technology on a silicon substrate, the filter ensures high transmittance of ≥75% within the designated passband. It also provides strong out-of-band suppression, achieving average transmittance of ≤1% in the 1–5µm range outside the passband. This high blocking performance significantly reduces interference, improving signal clarity and measurement precision in sensitive optical systems.
The silicon substrate offers excellent thermal stability, mechanical durability, and consistent optical performance under demanding conditions. With a standard diameter of 100±0.2mm and thickness of 0.5±0.05mm, the filter ensures reliable integration into a wide range of optical assemblies. Customization options for size, thickness, and substrate material are available to meet specific application requirements.
Compared to conventional IR filters, the NBP3910-180nm provides superior spectral selectivity, improved transmission efficiency, and enhanced blocking capability, making it suitable for high-accuracy infrared applications.
Key Features:
- Narrow band IR filter centered at 3910±50nm
- High transmittance: ≥75%
- Bandwidth: 180±30nm
- Strong blocking: 1–5µm Tave ≤1%
- Silicon substrate for stability and durability
- Standard size: Ø100±0.2mm, thickness 0.5±0.05mm
- Customizable optical and mechanical specifications
Applications:
- Chemical gas detection systems
- Infrared spectroscopy and analysis
- Environmental monitoring equipment
- Industrial process control
- Scientific research instrumentation
- Optical sensing and detection systems
- Gas leak detection and safety systems
