NBP870 narrowband filter is a narrowband filter designed for environmental monitoring applications. It specifically transmits light in the band around 870nm and effectively blocks light of other wavelengths. NBP (Narrow Band Pass) refers to “narrowband filtering”, and its central wavelength of 870nm is often used in remote sensing, meteorological monitoring, and environmental monitoring. This type of filter can help selective transmission of specific spectra and is usually used in conjunction with near-infrared detection instruments, spectrometers, laser systems, etc.
Model: BP870
Specifications: Customized
Material: Optical glass
BP850 narrowband filters usually use the interference principle of multi-layer dielectric films to achieve selective transmission of wavelengths. By precisely controlling the thickness and refractive index of each layer of dielectric film, light of a specific wavelength can be reflected and interfered between the film layers, thereby achieving enhanced transmission of the wavelength, while light of other wavelengths is suppressed due to different phase differences.
Product attributes
Material: optical grade glass
Bandwidth: 5nm~10nm
Center wavelength: 870nm
Band range: 200nm~1100nm
Application Areas
- Environmental remote sensing
The 870nm band is often used to observe specific features of the earth’s surface, such as water bodies, vegetation cover, soil moisture, etc. This filter can capture specific reflection features, which is helpful for long-term observation of environmental changes. - Atmospheric gas monitoring
In atmospheric monitoring, the 870nm narrowband filter can help detect specific components in the atmosphere, such as aerosol concentration or gas distribution, for air quality detection and pollution source tracking. - Water quality monitoring
When the light in the 870nm band penetrates the water body, it will show different reflection characteristics due to the composition of the water body. It is suitable for monitoring suspended matter, organic matter content, etc. in the water body, and is used for water quality evaluation. - Agricultural and vegetation health monitoring
Plants have specific reflection characteristics in the near-infrared band (including 870nm). The 870nm narrowband filter can be used for agricultural remote sensing to help evaluate crop health, vegetation coverage, etc., and is an important tool for precision agriculture. - Industrial process monitoring
In some industrial processes, the 870nm band can be used to monitor changes in material composition. For example, in the process of flue gas emission and wastewater treatment, the spectral characteristics of specific compounds can be detected to achieve precise control. - Medical imaging and diagnosis
870nm narrowband filters are also used in medical imaging, especially in near-infrared imaging technology, for blood oxygen saturation monitoring, tissue imaging, etc.
BP870 Narrowband Filter Curve
