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High-Quality Infrared Narrowband Filter (BP) from China Suppliers - Factory Customization Available
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High-Quality Infrared Narrowband Filter (BP) from China Suppliers - Factory Customization Available

The MULTI IR Narrowband Filter is a cutting-edge solution designed for precise applications in gas detection and analysis. Proudly manufactured by leading Suppliers in China, our filter boasts exceptional features such as high center wavelength accuracy, narrow and steep passband, and remarkable transmittance within the passband. With a deep cutoff depth and extremely high edge transition steepness, this filter is ideal for various industries including smart homes, environmental protection, and agricultural production. Our Factory offers customization options for center wavelength, passband width, cutoff range, and size, ensuring that our customers receive tailored solutions for their specific needs
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    Product Name CWL (nm) HPB (nm) Tp (%) Size (mm) Sub Material Blocking (nm) Spectrogram
    BP900±30 900 70 ≥90 Φ0.1~300 Sapphire 650~1250 BP900±30 Spectrogram
    BP950 - - - Φ0.1~300 K9 Glass - BP950 Spectrogram
    BP1380±30 1380 70 ≥85 Φ0.1~300 Sapphire 500~2000 BP1380±30 Spectrogram
    BP1440±20 1440 20 ≥70 Φ0.1~300 White Glass 400~2200 BP1440±20 Spectrogram
    BP1640±20 1640 190 ≥70 Φ0.1~300 White Glass 400~8000 BP1640±20 Spectrogram
    BP1645±5 1645 20 ≥90 Φ0.1~300 D263T 800~2000 BP1645±5 Spectrogram
    BP1650±5 1650 15 ≥90 Φ0.1~300 D263T 800~2000 BP1650±5 Spectrogram
    BP1653±5 1653 20 ≥90 Φ0.1~300 D263T 800~2000 BP1653±5 Spectrogram
    BP1655±2 1655 20 ≥80 Φ0.1~300 D263T 800~2000 BP1655±2 Spectrogram
    BP1657±2 1657 20 ≥90 Φ0.1~300 D263T 800~2000 BP1657±2 Spectrogram
    BP1658±5 1658 15 ≥90 Φ0.1~300 D263T 800~2000 BP1658±5 Spectrogram
    BP1660±5 1660 15 ≥90 Φ0.1~300 D263T 800~2000 BP1660±5 Spectrogram
    BP1663±5 1663 20 ≥80 Φ0.1~300 D263T 800~2000 BP1663±5 Spectrogram
    BP1665±5 1665 20 ≥90 Φ0.1~300 D263T 800~2000 BP1665±5 Spectrogram
    BP1670±20 1670 20 ≥80 Φ0.1~300 D263T 300~2500 BP1670±20 Spectrogram
    BP1697 1697 15 ≥85 Φ0.1~300 D263T 800~2000 BP1697 Spectrogram
    BP1700±17 1700 70 ≥75 Φ0.1~300 Sapphire 500~3000 BP1700±17 Spectrogram
    BP1720±15 1720 20 >60 Φ0.1~300 White Glass 400~2200 BP1720±15 Spectrogram
    BP1745±15 1740 20 55~65 Φ0.1~300 White Glass 400~2200 BP1745±15 Spectrogram
    BP1790±15 1790 30 ≥85 Φ0.1~300 White Glass 400~3000 BP1790±15 Spectrogram
    BP1810 1810 30 ≥80 Φ0.1~300 White Glass 400~3000 BP1810 Spectrogram
    BP1820±25 1820 30 ≥85 Φ0.1~300 Si 400~3000 BP1820±25 Spectrogram
    BP1860±30 1860 60 ≥85 Φ0.1~300 Si 400~3000 BP1860±30 Spectrogram
    BP1900±20 1900 50 ≥80 Φ0.1~300 White Glass 400~3000 BP1900±20 Spectrogram
    BP1930±15 1920 20 >70 Φ0.1~300 White Glass 400~2200 BP1930±15 Spectrogram
    BP1940±25 1940 50 ≥70 Φ0.1~300 White Glass 400~3000 BP1940±25 Spectrogram
    BP1940±18 1940 45 ≥80 Φ0.1~300 White Glass 400~3000 BP1940±18 Spectrogram
    BP1970±20 1970 45 ≥80 Φ0.1~300 White Glass 400~3000 BP1970±20 Spectrogram
    BP2000±10 2000 45 ≥50 Φ0.1~300 Quartz 400~15000 BP2000±10 Spectrogram
    BP2017±10 2017 35 ≥55 Φ0.1~300 Sapphire 400~15000 BP2017±10 Spectrogram
    BP2010±20 2010 180 ≥80 Φ0.1~300 Sapphire 500~3000 BP2010±20 Spectrogram
    BP2050±20 2050 200 ≥80 Φ0.1~300 Sapphire 500~3000 BP2050±20 Spectrogram
    BP2080±20 2080 50 ≥80 Φ0.1~300 White Glass 400~3000 BP2080±20 Spectrogram
    BP2100±20 2100 50 ≥90 Φ0.1~300 White Glass 400~3000 BP2100±20 Spectrogram
    BP2120±20 2120 50 ≥80 Φ0.1~300 White Glass 400~3000 BP2120±20 Spectrogram
    BP2150±20 2150 45 ≥75 Φ0.1~300 Sapphire 400~15000 BP2150±20 Spectrogram
    BP2180±20 2180 45 ≥70 Φ0.1~300 Sapphire 400~15000 BP2180±20 Spectrogram
    BP2220±20 2220 45 ≥75 Φ0.1~300 Sapphire 400~15000 BP2220±20 Spectrogram
    BP2200±20 2200 30 ≥70 Φ0.1~300 White Glass 400~3000 BP2200±20 Spectrogram
    BP2240±20 2240 30 ≥80 Φ0.1~300 White Glass 400~3000 BP2240±20 Spectrogram
    BP2250±10 2250 30 ≥85 Φ0.1~300 White Glass 400~3000 BP2250±10 Spectrogram
    BP2290±30 2265 30 ≥85 Φ0.1~300 White Glass 400~3000 BP2290±30 Spectrogram
    BP2300±20 2300 90 ≥90 Φ0.1~300 White Glass 400~3000 BP2300±20 Spectrogram
    BP2310±20 2310 90 ≥90 Φ0.1~300 White Glass 400~3000 BP2310±20 Spectrogram
    BP2330±20 2330 30 ≥70 Φ0.1~300 White Glass 400~3000 BP2330±20 Spectrogram
    BP2400±24 2400 70 ≥75 Φ0.1~300 Sapphire 500~3000 BP2400±24 Spectrogram
    BP2435±10 2435 60 ≥70 Φ0.1~300 Sapphire 400~20000 BP2435±10 Spectrogram
    BP2435±20 2435 60 ≥70 Φ0.1~300 Sapphire 400~20000 BP2435±20 Spectrogram
    BP2450±25 2450 74 ≥50 Φ0.1~300 White Glass 1500~5500 BP2450±25 Spectrogram
    BP2450±20 2450 74 ≥70 Φ0.1~300 Si 1500~5500 BP2450±20 Spectrogram
    BP2460±20 2460 50 ≥80 Φ0.1~300 Sapphire 1500~15000 BP2460±20 Spectrogram
    Stock Inventory Note: The above list shows our current stock items. If you do not see the specific wavelength or substrate you are looking for, please contact us for custom optical filter fabrication.
    Frequently Asked Questions (FAQ)
    Q1 What parameters define these optical bandpass filters?

    The core specifications include Center Wavelength (CWL), Half Power Bandwidth (HPB/FWHM), Peak Transmittance (Tp), Substrate Material, Size dimensions, and the Out-of-Band Optical Blocking range.

    Q2 What substrate materials are available for infrared applications?

    Depending on the required wavelength and mechanical durability, substrates include Sapphire, Silicon (Si), Germanium (Ge), Quartz, White Glass, K9 Glass, BF33, and D263T.

    Q3 Can filters be customized to specific sizes and geometric shapes?

    Yes, we provide standard circular diameters from Φ0.1 mm to 300 mm, as well as customized rectangular, square, or step-profile dimensions tailored to your optical system housing.

    Q4 What is the typical optical blocking level outside the passband?

    Our bandpass filters typically achieve deep optical density blocking from OD2 to OD6+ across broad UV, VIS, NIR, and MWIR spectrum ranges to eliminate unwanted background noise.

    Q5 How do I request a custom filter if my required wavelength is not in stock?

    You can contact our engineering team via the inquiry form with your target CWL, FWHM, angle of incidence (AOI), substrate material, and dimensional requirements for an optimized custom coating design.