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China Suppliers: Multi IR Narrowband Filter (BP) - High Transmittance & Customizable Options from Factory
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China Suppliers: Multi IR Narrowband Filter (BP) - High Transmittance & Customizable Options from Factory

The MULTI IR Narrowband Filter, a product offered by leading suppliers and manufacturers in China, provides exceptional advantages, including precise center wavelength accuracy, a narrow and steep passband, high transmittance within the passband, and a deep cutoff depth. This filter boasts an extremely high edge transition steepness, making it ideal for applications in gas detection and analysis. It is also widely utilized in smart homes, environmental protection, and both industrial and agricultural production. Our factory offers customization options for center wavelength, passband width, cutoff range, size, and spectral parameters to meet specific needs. Choose our MULTI IR Narrowband Filter 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 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
    BP2017±10 2017 35 ≥55 Φ0.1~300 Sapphire 400~15000 Spectrogram
    BP2010±20 2010 180 ≥80 Φ0.1~300 Sapphire 500~3000 Spectrogram
    BP2050±20 2050 200 ≥80 Φ0.1~300 Sapphire 500~3000 Spectrogram
    BP2080±20 2080 50 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2100±20 2100 50 ≥90 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2120±20 2120 50 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2150±20 2150 45 ≥75 Φ0.1~300 Sapphire 400~15000 Spectrogram
    BP2180±20 2180 45 ≥70 Φ0.1~300 Sapphire 400~15000 Spectrogram
    BP2220±20 2220 45 ≥75 Φ0.1~300 Sapphire 400~15000 Spectrogram
    BP2200±20 2200 30 ≥70 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2240±20 2240 30 ≥80 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2250±10 2250 30 ≥85 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2290±30 2265 30 ≥85 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2300±20 2300 90 ≥90 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2310±20 2310 90 ≥90 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2330±20 2330 30 ≥70 Φ0.1~300 White Glass 400~3000 Spectrogram
    BP2400±24 2400 70 ≥75 Φ0.1~300 Sapphire 500~3000 Spectrogram
    BP2435±10 2435 60 ≥70 Φ0.1~300 Sapphire 400~20000 Spectrogram
    BP2435±20 2435 60 ≥70 Φ0.1~300 Sapphire 400~20000 Spectrogram
    BP2450±25 2450 74 ≥50 Φ0.1~300 White Glass 1500~5500 Spectrogram
    BP2450±20 2450 74 ≥70 Φ0.1~300 Si 1500~5500 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 (FAQ)

    1. What do CWL and HPB stand for in the product specifications?

    CWL stands for Center Wavelength, which is the midpoint of the spectral bandpass. HPB stands for Half Peak Bandwidth (also known as Full Width at Half Maximum, FWHM), which defines the width of the spectral band transmitted by the filter at 50% of its peak transmission.

    2. What optical substrates are used for these bandpass filters?

    Depending on the specific wavelength and application requirements, we offer filters fabricated on various high-performance substrate materials including Sapphire, Silicon (Si), Germanium (Ge), Quartz, White Glass, K9 Glass, and D263T glass.

    3. Are custom sizes and shapes available for these filters?

    Yes, our standard size range spans from Φ0.1 mm up to 300 mm. We can customize the dimensions, shapes, and thicknesses to fit your specific optical assembly and instrumentation requirements.

    4. What is the typical peak transmission (Tp) of the bandpass filters?

    Our filters feature high peak transmission, with most stock items achieving Tp values of ≥70%, ≥80%, or even ≥90%, depending on the target center wavelength and substrate material.

    5. How do I request a quote or inquire about custom filter specifications?

    If you require custom center wavelengths, specific blocking ranges, or custom dimensions, please click the "contact us" link to submit your detailed specifications, and our engineering team will assist you promptly.