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  • 680 nm Bandpass Filter

    The 680 nm bandpass filter is a high-performance narrow-band interference filter centered at 680 nm, offering high transmittance, broad blocking range, and excellent stray-light suppression. Manufactured with multi-layer dielectric hard-coating technology, it provides high transmission in the target band while delivering high optical density (OD) blocking in the ultraviolet, visible, and near-infrared regions. This product is widely used in fluorescence imaging, laser detection, flow cytometry, confocal microscopy, biomedical instrumentation, machine vision, and research optical systems.

    Product features:Center wavelength approximately 680 nm;Average passband transmittance > 93%;High transmission efficiency for enhanced system signal strength;Multi‑zone high‑blocking design with maximum OD up to 8;High-stability dielectric hard coating;Long lifetime and excellent environmental stability

    Part Number:MP-BPF-680

    Application area:Fluorescence microscopy | Biomedical detection | Laser optical systems | Research and industrial inspection

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    Main parameters
  • Core parameters
  • Laser Wavelength Transmission Band

    680 nm Tavg > 93% 673.5 – 686.5 nm

  • Dimension Drawing
  • General Parameters

    Specification

    Value

    Transmission Band

    Tavg > 93%  673.5 – 686.5 nm

    Blocking Band

    ODavg >5  300 -­ 656 nm

    Blocking Band

    ODavg > 8  490 – 636 nm nm

    Blocking Band

    OD > 3.5  661 nm

    Blocking Band

    ODavg > 5  705 – 1050 nm

    FWHM Bandwidth

    19.5nm

    Guaranteed Minimum Bandwidth

    13

    Angle of Incidence

    0 ± 5°

    Cone Half-angle

    Clear Aperture

    ≥21mm

    Transverse Dimensions, Diameter

    25 mm

    Filter Thickness, Mounted

    5.0 mm

    Filter Thickness Tolerance, Mounted

    ±0.1mm

    Filter Thickness, Unmounted

    2.0 mm

    Filter Thickness Tolerance, Unmounted

    ±0.1mm

    Surface Quality (Scratch-Dig)

    60-40

    Filter Effective Index

    2.04

    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1.png 

     

     

    Optical Density Spectrum

     图片2.png


    Optional Configurations

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    Downloads

    Request for Quotation

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  • Product title: 680 nm Bandpass Filter
  • Product link: https://www.idealphotonics.com/product/detail/1675.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
    • 10 10+ Advanced Optical Solutions