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    • 406 nm Narrow Bandpass Optical Filter

    The 406 nm narrow bandpass filter is an interference filter manufactured using a high-performance hard dielectric coating process. It is specifically designed for fluorescence microscopy, Raman spectroscopy, laser detection, biomedical imaging, and precision optical instruments. The product offers high transmittance in the 398.5-413.5 nm band, while providing excellent rejection outside the passband. It effectively suppresses stray light, improves system signal-to-noise ratio, and ensures accurate and stable measurement results.

    Product features：Center wavelength 406 nm；Average passband transmittance >85%；20 nm full width at half maximum (FWHM)；Maximum blocking depth up to OD10；Hard dielectric coating with excellent environmental durability；High stability and long service life

    Part Number：MP-NBP-406

    Application area：Fluorescence microscopes | Confocal microscopes | Raman spectrometers | Spectral analysis instruments | Research and laboratory equipment

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    Main parameters
  • Core parameters

  • Laser Wavelength Transmission Band

    406 nm Tavg > 85% 398.5–413.5 nm

  • Dimension Drawing
    • General Parameters

    Specification

    Value

    Transmission Band

    Tavg > 85%  398.5–413.5 nm

    Blocking Band

    ODavg > 10  335–375 nm

    Blocking Band

    ODavg > 5  424–560 nm

    Blocking Band

    ODavg > 3  560 – 750 nm

    FWHM Bandwidth

    20nm

    Guaranteed Minimum Bandwidth

    15

    Angle of Incidence

    0 ± 5 °

    Cone Half-angle

    7°

    Clear Aperture

    ≥ 22 mm

    Transverse Dimensions, Diameter

    25mm

    Filter Thickness, Mounted

    3.5mm

    Filter Thickness Tolerance, Mounted

    ± 0.1mm

    Filter Thickness, Unmounted

    2.0mm

    Filter Thickness Tolerance, Unmounted

    ± 0.1mm

    Surface Quality (Scratch-Dig)

    60-40

    Filter Effective Index

    2.15

    Optical Damage Rating

    Testing has proven to show no signs of degradation when exposed to at least 6.0 W of power from an unfiltered xenon arc lamp over a 25 mm diameter (corresponding to 1.2 W/cm2) for over 500 hrs.

    Orientation

    Arrow on ring is preferred direction of propagation of light

     

    Spectral Characteristic Curves

     

    Transmittance-Wavelength Spectrum

    图片2.png 

     

     

    Optical Density Spectrum

     图片3.png


    Optional Configurations

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    Downloads

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  • Product title: 406 nm Narrow Bandpass Optical Filter
  • Product link: https://www.idealphotonics.com/product/detail/1664.html

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      • Other Requirements:

    • 10+ 10 Years of Experience
    • 50 50 + Countries Bussiness
    • 10000 10k + Diodes sold worldwide
    • 30 30+ Invention patent
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