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High-Accuracy Infrared Narrowband Filter - China Suppliers & Factory for Gas Detection and Environmental Applications
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IR Longpass Filter (LP)

IR Longpass Filter (LP)
IR Broadband Filter (WBP)

IR Broadband Filter (WBP)
Infrared Narrowband Filter (BP)

Infrared Narrowband Filter (BP)
Infrared Anti-Reflective Filter (AR) Coating

Infrared Anti-Reflective Filter (AR) Coating
Diamond-Like Carbon Filter (DLC) Coating

Diamond-Like Carbon Filter (DLC) Coating
Infrared Beam Splitter Filter (BS)

Infrared Beam Splitter Filter (BS)
Infrared Dual-Channel Filter (BP+BP)

Infrared Dual-Channel Filter (BP+BP)
Infrared Dual-Channel Filter (WBP+LP)

Infrared Dual-Channel Filter (WBP+LP)
Infrared Dual-Channel Filter (WBP+WBP)

Infrared Dual-Channel Filter (WBP+WBP)
AR Coating

AR Coating
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High-Accuracy Infrared Narrowband Filter - China Suppliers & Factory for Gas Detection and Environmental Applications

Introducing our premium MULTI IR Narrowband Filter, a top choice among China suppliers and factories specializing in advanced optical solutions. This filter boasts exceptional features, including precise center wavelength accuracy, narrow and steep passband characteristics, and high transmittance within the designated passband. With deep cutoff depth and remarkably steep edge transitions, it effectively meets the demanding needs of gas detection and analysis applications, as well as smart home technologies, environmental protection, and both industrial and agricultural production, Our MULTI IR Narrowband Filter is fully customizable, allowing clients to specify their desired center wavelength, passband width, cutoff range, size, and other critical spectral parameters. Rely on us for high-quality products tailored to your specific requirements. Choose our filters for superior performance and reliability in your applications
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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
    BP2465±5 2465 10 ≥60 Φ0.1~300 BF33 600~3000
    Spectrogram
    BP2475±5 2475 10 ≥60 Φ0.1~300 BF33 600~3000
    Spectrogram
    BP2470±30 2470 50 ≥75 Φ0.1~300 Si 400~6000
    Spectrogram
    BP2470±24 2470 74 ≥70 Φ0.1~300 Si 1500~5500
    Spectrogram
    BP2490±5 2490 10 ≥60 Φ0.1~300 BF33 600~3000
    Spectrogram
    BP2500±25 2500 70 ≥80 Φ0.1~300 Sapphire 500~3000
    Spectrogram
    BP2500±30 2500 50 ≥75 Φ0.1~300 Si 400~6000
    Spectrogram
    BP2520±10 2520 50 ≥80 Φ0.1~300 Si 400~6000
    Spectrogram
    BP2530±30 2530 50 ≥75 Φ0.1~300 Si 400~6000
    Spectrogram
    BP2550±50 2550 70 ≥75 Φ0.1~300 Sapphire 500~3000
    Spectrogram
    1 2 3 4 5 6 7 8
    The above list shows our current stock items.
    If you don't see what you are looking for, please contact us.
    Frequently Asked Questions (FAQ)

    Q1: What are CWL and HPB in the optical filter specifications?

    CWL stands for Center Wavelength, which is the midpoint of the passband. HPB (Half Pass Band), also known as FWHM (Full Width at Half Maximum), defines the bandwidth of the filter at 50% of its peak transmission.

    Q2: What substrate materials are available for these bandpass filters?

    We offer various substrate materials depending on the wavelength range and thermal requirements, including Sapphire, Silicon (Si), Germanium (Ge), Quartz, D263T, and K9 Glass.

    Q3: Can I request custom sizes for these stock filters?

    Yes, our standard sizing ranges from Φ0.1mm up to 300mm. We can customize the dimensions and shapes to fit your specific optical systems and instrument requirements.

    Q4: What does the blocking range signify?

    The blocking range specifies the interval of wavelengths that are suppressed or blocked by the filter to prevent unwanted out-of-band light from reaching the detector, ensuring high signal-to-noise ratios.

    Q5: How can I obtain the spectrogram data for a specific optical filter?

    You can view the spectrogram for stock items by clicking on the thumbnail images in the table. For detailed curve data or high-resolution test reports, please contact our technical support team.