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China Suppliers INBP4260 Gas Detection Infrared Bandpass Filter from Factory - High Precision CO₂ Detection
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China Suppliers INBP4260 Gas Detection Infrared Bandpass Filter from Factory - High Precision CO₂ Detection

In the fields of industrial safety, environmental monitoring, and smart home technology, the precision of gas leak detection plays a crucial role in safeguarding lives and property. The INBP4260 infrared narrowband filter has emerged as a gold standard for carbon dioxide (CO₂) detection in China, setting itself apart with its outstanding spectral selectivity. As leading suppliers and factory manufacturers, we are dedicated to providing top-tier gas sensors that enhance safety and reliability in various applications. Trust our expertise to deliver the best solutions for your gas detection needs
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    Product Details

    Specifications
    Custom-engineered for CO₂ detection, the INBP4260 filter features a 4260nm center wavelength, precisely aligning with CO₂ molecular absorption peaks to eliminate environmental light interference effectively and enable ppm-level concentration detection. With a full width at half maximum (FWHM) < 90nm, ≥80% peak transmittance, and UV–11μm full-band blocking depth (T < 0.1%), it ensures strong signals and low noise, making it ideal for flame detectors, industrial process control, and indoor air quality monitoring.
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    Center Wavelength

    4260nm — precisely aligned with CO₂ molecular absorption peaks

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    FWHM < 90nm

    ≥80% peak transmittance for strong signal performance

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    Full-Band Blocking

    UV–11μm blocking depth T < 0.1% — ultra-low noise baseline

    Parameter Specification
    Center Wavelength (CWL) 4260nm
    Full Width at Half Maximum (FWHM) < 90nm
    Peak Transmittance ≥ 80%
    Blocking Range UV – 11μm
    Blocking Depth T < 0.1%
    Detection Level ppm-level CO₂ concentration
    Applications Flame detectors, industrial process control, indoor air quality monitoring
    🏭 Beijing Bodian Optical Technology Co., Ltd — 40 Years of Thin-Film Expertise, Customized Production Guaranteed

    With over 40 years of experience in optical thin-film technology, Bodian — a national high-tech enterprise — operates cutting-edge vacuum deposition equipment and a full-spectrum testing system. For the INBP4260 filter, we offer:

    • 🔬
      Material Customization Supports substrates like monocrystalline silicon and sapphire, with flexible dimensions and thickness options to meet diverse sensor packaging needs.
    • ✂️
      Tailored Specifications Circular, square, or custom-shaped designs available for bulk production, with lead times as short as 10 days.
    💬 Frequently Asked Questions
    QWhat makes the 4260nm center wavelength ideal for CO₂ detection?
    CO₂ molecules have a strong absorption band centered around 4260nm in the mid-infrared spectrum. By aligning the filter's center wavelength precisely to this peak, the INBP4260 maximizes the sensor's sensitivity to CO₂ while rejecting other wavelengths, enabling accurate ppm-level concentration measurements.
    QWhat does FWHM < 90nm mean for detection performance?
    FWHM (Full Width at Half Maximum) defines the bandwidth of the filter. A narrower FWHM of less than 90nm means the filter passes only the specific wavelengths needed for CO₂ detection, effectively blocking interfering signals from other gases or ambient light and resulting in higher signal-to-noise ratios.
    QWhich substrate materials are available for the INBP4260 filter?
    Bodian supports multiple substrate materials including monocrystalline silicon and sapphire. Each material offers different thermal, mechanical, and optical properties, allowing customers to select the most suitable option based on their specific sensor packaging and environmental requirements.
    QCan the filter be customized in shape and size for OEM integration?
    Yes. Bodian offers full customization including circular, square, and other custom geometries. Dimensions and thickness can be tailored to fit specific sensor housings or optical assemblies, making the INBP4260 suitable for seamless OEM and system-level integration.
    QWhat is the typical lead time for bulk orders?
    For standard configurations, lead times can be as short as 10 days. Custom specifications may require additional time depending on the complexity of the design and order volume. Bodian's production team works closely with customers to meet project timelines efficiently.
    QWhat applications is the INBP4260 bandpass filter suitable for?
    The INBP4260 is designed for a wide range of CO₂ sensing applications including flame detectors, industrial process control systems, indoor air quality (IAQ) monitors, HVAC systems, and portable gas analyzers where precise, low-noise CO₂ measurement is critical.