The NBP3850-180nm Infrared Narrow Band Filter from SENBA is a precision-engineered optical component designed for selective wavelength transmission in advanced infrared sensing and analytical applications. Centered at 3850±50nm with a narrow half bandwidth of 180±30nm, it provides highly accurate spectral filtering for gas detection, infrared spectroscopy, and scientific measurement systems.
Manufactured using advanced thin-film coating technology on a silicon substrate, the filter ensures high transmittance of ≥75% within the target passband. It also delivers excellent out-of-band rejection, with average transmittance ≤1% across the 1–11µm range outside the passband, significantly reducing interference and improving measurement accuracy in critical optical systems.
The silicon substrate provides excellent thermal stability, mechanical strength, and long-term reliability, making it suitable for demanding industrial and laboratory environments. With a standard diameter of 100±0.2mm and thickness of 0.5±0.05mm, the filter supports stable integration into a wide range of optical assemblies. Customization options for size, thickness, and substrate material are available to meet specific design requirements.
Compared to conventional infrared filters, the NBP3850-180nm offers superior spectral precision, enhanced blocking performance, and improved transmission efficiency, making it ideal for high-accuracy infrared applications.
Key Features:
- Narrow band IR filter centered at 3850±50nm
- High transmittance: ≥75%
- Bandwidth: 180±30nm
- Strong blocking: 1–11µm Tave ≤1%
- Silicon substrate for durability and stability
- Standard size: Ø100±0.2mm, thickness 0.5±0.05mm
- Customizable specifications available
Applications:
- Chemical gas detection systems
- Infrared spectroscopy and analysis
- Environmental monitoring equipment
- Industrial process control systems
- Scientific research instrumentation
- Optical sensing and detection systems
- Gas leak detection and safety monitoring systems
