Bandpass Filters with FWHM 12 nm

Infrared Bandpass Filters

A bandpass filter is an inexpensive optical filter used as a wavelength selector that allows transmission of a predetermined wavelength while rejecting or blocking other wavelengths. Along with our wide selection of standard infrared filters, Optometrics designs and manufactures custom bandpass filters for instrument manufacturers world wide.

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

Optical Bandpass Filter – Typical Transmission Curve

Bandpass Filter Terminology

Transmission Curves are graphs or mathematical functions that characterize optical filters. Typically expressed as the percent or fraction of light transmitted versus wavelength.

  • Bandwidth is a range of wavelength that specifies the transmitted part of the spectrum.
  • Central Wavelength (CWL) is the midpoint wavelength of the bandwidth.
  • Peak Transmittance is the maximum percentage of light transmission through the filter. It is often centered at the CWL, but many filters have fairly flat transmittance across the bandwidth.
  • Half Bandwidth (HBW) or Full Width-Half Maximium (FWHM) is the wavelength range that characterizes a bandpass filter. It is bound by the wavelengths where transmittance is half (50%) that of the peak transmission.
  • Upper and Lower Blocking Regions are the ranges of wavelengths where the light is attenuated.

Product SKUs

  • 1300 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1300-12-25
    $119.00
    10 in stock
    Add to cart

    Bandpass Filter Specifications | F-1300-12-25

    CWL

    1300 nm

    CWL (Range)

    1300 – 1399 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    40

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 3000 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1350 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1350-12-25
    $119.00
    8 in stock
    Add to cart

    Bandpass Filter Specifications | F-1350-12-25

    CWL

    1350 nm

    CWL (Range)

    1300 – 1399 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    35

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 3000 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1400 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1400-12-25
    $119.00
    10 in stock
    Add to cart

    Bandpass Filter Specifications | F-1400-12-25

    CWL

    1400 nm

    CWL (Range)

    1400 – 1499 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    35

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 3000 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1450 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1450-12-25
    $119.00
    1 in stock
    Add to cart

    Bandpass Filter Specifications | F-1450-12-25

    CWL

    1450 nm

    CWL (Range)

    1400 – 1499 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    35

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 3000 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1500 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1500-12-25
    $119.00
    5 in stock
    Add to cart

    Bandpass Filter Specifications | F-1500-12-25

    CWL

    1500 nm

    CWL (Range)

    1500 – 1599 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    35

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 1800 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1550 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    Curve
    CWL: 1550 FWHM: 10nm
    F-1550-12-25
    $119.00
    4 in stock
    Add to cart

    Bandpass Filter Specifications | F-1550-12-25

    CWL

    1550 nm

    CWL (Range)

    1500 – 1599 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    70%

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 1850 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1600 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1600-12-25
    $119.00
    10 in stock
    Add to cart

    Bandpass Filter Specifications | F-1600-12-25

    CWL

    1600 nm

    CWL (Range)

    1600 – 1699 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    65

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 1850 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

  • 1650 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.

    F-1650-12-25
    $119.00
    10 in stock
    Add to cart

    Bandpass Filter Specifications | F-1650-12-25

    CWL

    1650 nm

    CWL (Range)

    1600 – 1699 nm

    CWL Tolerance

    ± 2 nm

    FWHM

    12 nm

    FWHM Tolerance

    ± 2.4 nm

    Minimum Peak Transmission

    65

    Blocking

    ≥ 4 OD

    Blocking Range

    200 – 1850 nm

    Size (mm)

    25.0 mm dia.

    Size Tolerance

    +0, -0.1 mm

    Thickness

    7.5 mm

    Thickness Tolerance

    +0, -0.2 mm

    Clear Aperture

    21.0 mm

    Mount

    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

    Commercial

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