Short Pass Filters with Transmission Region Cut-off λ to 490 nm

Typical short pass filter curveA Short Pass filter or Short Wave Pass filter (“SP”) is a filter that transmits at shorter wavelengths and rejects longer wavelengths. By design, the transition in a short pass filter between the 50% cut-off or cut-on to rejection is quite sharp. This makes it much easier to separate excitation from emitted wavelengths without interfering with wavelengths of interest. Short pass filters are useful in applications where spectral noise reduction is important or for isolating a particular region of the spectrum.

  • Emission filters in fluorescence applications
  • Elimination of unwanted radiation
  • In spectroscopy
  • As order sorting filters
  • In astronomical applications
  • In laser-induced fluorescence to isolate source radiation.

  • A standard Short Pass filters available every 50 nm from 450 nm to 1000 nm
    Mounted in a black anodized aluminium ring.
  • Use in combination with long pass filters for custom bandpass filtering
  • Fine tune cut-on wavelengths by changing angle of incidence

Product SKUs

  • 700 nm Short Pass,, 25.4 mm Dia.

    Typical Short Pass Filter Curve
    5 in stock
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    Short Pass Filter Specifications | SP-700-25

    Cut-Off Wavelength

    700 nm

    Cut-Off Tolerance

    ±3 nm

    Transmission Region

    Cut-off λ to 490 nm

    Minimum Peak Transmission


    Slope (OD 0.3 to 4.0)

    ≤ 5%


    10-4 Min. / 10-5 Avg. to 910 nm

    Size (mm)

    25 mm dia.

    Size Tolerance

    +0.0/-0.2 mm


    6.3 mm

    Thickness Tolerance

    +0.0/-0.2 mm



    Clear Aperture

    21 mm


    Aluminum, Black Anodized

    Operating Temperature Range

    -20⁰ C to 75⁰ C

    Cut-Off Wavelength (Range)

    600 – 700 nm

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