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1400 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
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
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1450 nm Bandpass Filter, 12 nm FWHM, 25.0 mm Dia.
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
Optometrics
Bandpass Filters with CWL (Range) 1400 - 1499 nm
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
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.