The NBP4650-180nm Infrared Narrow Band Filter from SENBA is a high-precision optical filtering solution designed for selective infrared wavelength transmission in advanced sensing and analytical systems. Centered at 4650±50nm with a narrow bandwidth of 180±30nm, it delivers accurate spectral isolation, making it ideal for chemical gas detection, infrared spectroscopy, and scientific measurement applications.
Manufactured using advanced thin-film coating technology on a silicon substrate, the filter provides high transmittance of ≥75% within the designated passband. It also ensures excellent out-of-band blocking performance, achieving average transmittance of ≤1% across the 1–11µm range outside the passband. This strong spectral rejection significantly reduces interference and improves signal clarity, enabling higher measurement accuracy in demanding optical systems.
The silicon substrate offers excellent thermal stability, mechanical strength, and long-term durability, ensuring consistent optical performance in industrial and laboratory environments. With a standard diameter of 100±0.2mm and thickness of 0.5±0.05mm, the filter supports reliable integration into a wide range of optical assemblies. Customization options for size, thickness, and substrate are available to meet specific application needs.
Compared to conventional infrared filters, the NBP4650-180nm provides superior wavelength selectivity, improved transmission efficiency, and enhanced blocking capability for high-accuracy infrared applications.
Key Features:
- Narrow band IR filter centered at 4650±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 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 monitoring systems
