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High-Quality Infrared Narrowband Filters from China Suppliers | Customizable Options from Trusted Factory
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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-Quality Infrared Narrowband Filters from China Suppliers | Customizable Options from Trusted Factory

The MULTI IR Narrowband Filter is engineered for precision, featuring exceptional center wavelength accuracy and a narrow, steep passband. This advanced filter boasts high transmittance within its designated passband, accompanied by a deep cutoff depth and remarkable edge transition steepness, making it ideal for various applications. As a leading product among China suppliers and factory offerings, this filter is extensively utilized in gas detection, analysis, smart home systems, environmental protection, and industrial and agricultural production. Additionally, we offer customization options for center wavelength, passband width, cutoff range, size, and spectral parameters to meet the specific requirements of diverse projects
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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 Spectrogram
    BP950 - - - Φ0.1~300 K9 Glass - Spectrogram
    BP1380±30 1380 70 ≥85 Φ0.1~300 Sapphire 500~2000 Spectrogram
    BP1440±20 1440 20 ≥70 Φ0.1~300 White Glass 400~2200 Spectrogram
    BP1640±20 1640 190 ≥70 Φ0.1~300 White Glass 400~8000 Spectrogram
    BP1645±5 1645 20 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1650±5 1650 15 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1653±5 1653 20 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1655±2 1655 20 ≥80 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1657±2 1657 20 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1658±5 1658 15 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1660±5 1660 15 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1663±5 1663 20 ≥80 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1665±5 1665 20 ≥90 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1670±20 1670 20 ≥80 Φ0.1~300 D263T 300~2500 Spectrogram
    BP1697 1697 15 ≥85 Φ0.1~300 D263T 800~2000 Spectrogram
    BP1700±17 1700 70 ≥75 Φ0.1~300 Sapphire 500~3000 Spectrogram
    BP1720±15 1720 20 >60 Φ0.1~300 White Glass 400~2200 Spectrogram
    BP1745±15 1740 20 55~65 Φ0.1~300 White Glass 400~2200 Spectrogram
    BP1790±15 1790 30 ≥85 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP1810 1810 30 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP1820±25 1820 30 ≥85 Φ0.1~300 Si 400~3000 Spectrogram
    BP1860±30 1860 60 ≥85 Φ0.1~300 Si 400~3000 Spectrogram
    BP1900±20 1900 50 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP1930±15 1920 20 >70 Φ0.1~300 White Glass 400~2200 Spectrogram
    BP1940±25 1940 50 ≥70 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP1940±18 1940 45 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP1970±20 1970 45 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2000±10 2000 45 ≥50 Φ0.1~300 Quartz 400~15000 Spectrogram
    BP2460±20 2460 50 ≥80 Φ0.1~300 Sapphire 1500~15000 Spectrogram
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    The above list shows our current stock items. If you don't see what you are looking for, please contact us.
    ❓ Frequently Asked Questions
    What are the typical applications for these bandpass filters?
    These filters are widely used in environmental monitoring, gas analysis (such as CO2, CH4 detection), medical diagnostics, and industrial thermal imaging systems.
    Can you provide custom dimensions or shapes?
    Yes, we can customize the size (from Φ0.1mm up to 300mm) and shape (square, rectangular, or custom geometry) based on your specific optical system requirements.
    What substrate materials are available?
    We utilize a variety of high-quality substrates including Sapphire, Quartz, Silicon (Si), Germanium (Ge), K9 Glass, and D263T, depending on the required wavelength range.
    Do you provide spectral test reports with the filters?
    Absolutely. Every filter is tested, and we provide detailed spectrograms showing the Center Wavelength (CWL), Full Width at Half Maximum (FWHM), and Peak Transmission (Tp).
    What is the standard lead time for stock items?
    Items listed in our stock can typically be shipped within 1-3 business days. For custom coating runs, lead times usually range from 2 to 4 weeks.
    How do these filters perform under extreme temperatures?
    Our filters are designed with high-durability hard coatings that offer excellent thermal stability. Specific temperature range data can be provided upon request for materials like Sapphire and Silicon.