Bandpass Filters with Size (mm) 12.5 mm dia. and FWHM 80 nm

A bandpass filter is a relatively inexpensive type of optical filter used as a wavelength selector that allows transmission of a predetermined wavelength while rejecting or blocking other wavelengths.

Applications for a bandpass filter include, but are not limited to:

  • Clinical chemistry instrumentation
  • Environmental testing
  • Colorimetry
  • Elemental and laser line separation
  • Flame photometry
  • Fluorescence
  • Immunoassays

Along with our wide selection of standard bandpass filters, we design and manufacture optimized solutions for instrument manufacturers world wide.

For more detailed technical information about bandpass filters, please click here.

Bandpass Filter Terminology
Bandpass Filter Terminology

Product SKUs

  • 650 nm Bandpass Filter, 80 nm FWHM, 12.5 mm Dia.

    Chart showing the typical performance of F-650-80-12.5.
    5 in stock
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    Bandpass Filter Specifications | F-650-80-12.5


    650 nm

    CWL Tolerance

    ± 15 nm


    80 nm

    FWHM Tolerance

    ± 15 nm

    Minimum Peak Transmission



    ≥ 4 OD

    Blocking Range

    X-ray – 1200 nm

    Size (mm)

    12.5 mm dia.

    Size Tolerance

    +0, -0.2 mm


    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    9.0 mm


    Aluminum, Black Anodized

    Ring Marking

    CWL, FWHM, Light Direction

    Specification Temperature

    23˚ C

    Operating Temperature Range

    -50° C to +70° C

    Humidity Resistance

    MIL-810-810E, Method 507.3, 5 Cycles

    Optical Quality


    CWL (Range)

    600 – 699 nm

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