IR Filter

IR Bandpass Filter

IR Bandpass Filters come in two types, Narrow (up to 250nm bandwidth) and Wide Bandpass (more than 500nm bandwidth). On request, Wavelength Opto-Electronic offers bandpass filters of varying bandwidths, IR wavelengths, coatings, shapes and sizes to meet the specific needs of the customer. These filters are used in Digital Imaging, IR Gas Analysis, Security Systems, High-temperature detection and in several fields.

Diameter Tolerance: +0/-0.2mm
Clear Aperture: >80%
Thickness: <10mm
CWL Tolerance: ±2nm
FWHM: 10±2nm
Peak Transmission: >45%
Block: <0.1%@200nm-12µm
CWL Shift: <0.02nm/℃

Part NumberDia (mm)Center λ (nm)FWHM (nm)T (%)Pass band Type
BFIR-1.5-0.0225.4150020>70Narrow
BFIR-1.5-0.0325.4150030>70Narrow
BFIR-1.5-0.0525.4150050>70Narrow
BFIR-1.5-0.125.41500100>70Narrow
BFIR-1.5-0.2525.41500250>70Narrow
BFIR-1.75-0.0225.4175020>70Narrow
BFIR-1.75-0.0325.4175030>70Narrow
BFIR-1.75-0.0525.4175050>70Narrow
BFIR-1.75-0.125.41750100>70Narrow
BFIR-1.75-0.2525.41750250>70Narrow
BFIR-2-0.0225.4200020>70Narrow
BFIR-2-0.0325.4200030>70Narrow
BFIR-2-0.0525.4200050>70Narrow
BFIR-2-0.125.42000100>70Narrow
BFIR-2-0.2525.42000250>70Narrow
BFIR-2.5-0.0225.4250020>70Narrow
BFIR-2.5-0.0325.4250030>70Narrow
BFIR-2.5-0.0525.4250050>70Narrow
BFIR-2.5-0.125.42500100>70Narrow
BFIR-2.5-0.2525.42500250>70Narrow
BFIR-3-0.0225.4300020>70Narrow
BFIR-3-0.0325.4300030>70Narrow
BFIR-3-0.0525.4300050>70Narrow
BFIR-3-0.125.43000100>70Narrow
BFIR-3-0.2525.43000250>70Narrow
BFIR-3.5-0.0225.4350020>70Narrow
BFIR-3.5-0.0325.4350030>70Narrow
BFIR-3.5-0.0525.4350050>70Narrow
BFIR-3.5-0.125.43500100>70Narrow
BFIR-3.5-0.2525.43500250>70Narrow
BFIR-4-0.0225.4400020>70Narrow
BFIR-4-0.0325.4400030>70Narrow
BFIR-4-0.0525.4400050>70Narrow
BFIR-4-0.125.44000100>70Narrow
BFIR-4-0.2525.44000250>70Narrow
BFIR-4.25-0.0225.4425020>70Narrow
BFIR-4.25-0.0325.4425030>70Narrow
BFIR-4.25-0.0525.4425050>70Narrow
BFIR-4.25-0.125.44250100>70Narrow
BFIR-4.25-0.2525.44250250>70Narrow
BFIR-4.5-0.0225.4450020>70Narrow
BFIR-4.5-0.0325.4450030>70Narrow
BFIR-4.5-0.0525.4450050>70Narrow
BFIR-4.5-0.125.44500100>70Narrow
BFIR-4.5-0.2525.44500250>70Narrow
BFIR-4.75-0.0225.4475020>70Narrow
BFIR-4.75-0.0325.4475030>70Narrow
BFIR-4.75-0.0525.4475050>70Narrow
BFIR-4.75-0.125.44750100>70Narrow
BFIR-4.75-0.2525.44750250>70Narrow
BFIR-5-0.0225.4500020>70Narrow
BFIR-5-0.0325.4500030>70Narrow
BFIR-5-0.0525.4500050>70Narrow
BFIR-5-0.125.45000100>70Narrow
BFIR-5-0.2525.45000250>70Narrow
BFIR-5.5-0.0225.4550020>70Narrow
BFIR-5.5-0.0325.4550030>70Narrow
BFIR-5.5-0.0525.4550050>70Narrow
BFIR-5.5-0.125.45500100>70Narrow
BFIR-5.5-0.2525.45500250>70Narrow
BFIR-6-0.0225.4600020>70Narrow
BFIR-6-0.0325.4600030>70Narrow
BFIR-6-0.0525.4600050>70Narrow
BFIR-6-0.125.46000100>70Narrow
BFIR-6-0.2525.46000250>70Narrow
BFIR-6.5-0.0225.4650020>70Narrow
BFIR-6.5-0.0325.4650030>70Narrow
BFIR-6.5-0.0525.4650050>70Narrow
BFIR-6.5-0.125.46500100>70Narrow
BFIR-6.5-0.2525.46500250>70Narrow
BFIR-7-0.0525.4700050>70Narrow
BFIR-7-0.125.47000100>70Narrow
BFIR-7-0.2525.47000250>70Narrow
BFIR-7.5-0.0525.4750050>70Narrow
BFIR-7.5-0.125.47500100>70Narrow
BFIR-7.5-0.2525.47500250>70Narrow
BFIR-8-0.0525.4800050>70Narrow
BFIR-8-0.125.48000100>70Narrow
BFIR-8-0.2525.48000250>70Narrow
BFIR-8.5-0.0525.4850050>70Narrow
BFIR-8.5-0.125.48500100>70Narrow
BFIR-8.5-0.2525.48500250>70Narrow
BFIR-9-0.0525.4900050>70Narrow
BFIR-9-0.125.49000100>70Narrow
BFIR-9-0.2525.49000250>70Narrow
BFIR-9.5-0.0525.4950050>70Narrow
BFIR-9.5-0.125.49500100>70Narrow
BFIR-9.5-0.2525.49500250>70Narrow
BFIR-10-0.0525.41000050>70Narrow
BFIR-10-0.125.410000100>70Narrow
BFIR-10-0.2525.410000250>70Narrow
BFIR-10.5-0.0525.41050050>70Narrow
BFIR-10.5-0.125.410500100>70Narrow
BFIR-10.5-0.2525.410500250>70Narrow
BFIR-11-0.0525.41100050>70Narrow
BFIR-11-0.125.411000100>70Narrow
BFIR-11-0.2525.411000250>70Narrow
BFIR-11.5-0.0525.41150050>70Narrow
BFIR-11.5-0.125.411500100>70Narrow
BFIR-11.5-0.2525.411500250>70Narrow
BFIR-1.5-0.525.41500500>70Wide
BFIR-1.5-0.725.41500700>70Wide
BFIR-1.5-0.825.41500800>70Wide
BFIR-1.5-125.415001000>70Wide
BFIR-1.75-0.525.41750500>70Wide
BFIR-1.75-0.725.41750700>70Wide
BFIR-1.75-0.825.41750800>70Wide
BFIR-1.75-125.417501000>70Wide
BFIR-2-0.525.42000500>70Wide
BFIR-2-0.725.42000700>70Wide
BFIR-2-0.825.42000800>70Wide
BFIR-2-125.420001000>70Wide
BFIR-2.5-0.525.42500500>70Wide
BFIR-2.5-0.725.42500700>70Wide
BFIR-2.5-0.825.42500800>70Wide
BFIR-2.5-125.425001000>70Wide
BFIR-3-0.525.43000500>70Wide
BFIR-3-0.725.43000700>70Wide
BFIR-3-0.825.43000800>70Wide
BFIR-3-125.430001000>70Wide
BFIR-3.5-0.525.43500500>70Wide
BFIR-3.5-0.725.43500700>70Wide
BFIR-3.5-0.825.43500800>70Wide
BFIR-3.5-125.435001000>70Wide
BFIR-4-0.525.44000500>70Wide
BFIR-4-0.725.44000700>70Wide
BFIR-4-0.825.44000800>70Wide
BFIR-4-125.440001000>70Wide
BFIR-4.25-0.525.44250500>70Wide
BFIR-4.25-0.725.44250700>70Wide
BFIR-4.25-0.825.44250800>70Wide
BFIR-4.25-125.442501000>70Wide
BFIR-4.5-0.525.44500500>70Wide
BFIR-4.5-0.725.44500700>70Wide
BFIR-4.5-0.825.44500800>70Wide
BFIR-4.5-125.445001000>70Wide
BFIR-4.75-0.525.44750500>70Wide
BFIR-4.75-0.725.44750700>70Wide
BFIR-4.75-0.825.44750800>70Wide
BFIR-4.75-125.447501000>70Wide
BFIR-5-0.525.45000500>70Wide
BFIR-5-0.725.45000700>70Wide
BFIR-5-0.825.45000800>70Wide
BFIR-5-125.450001000>70Wide
BFIR-5.5-0.525.45500500>70Wide
BFIR-5.5-0.725.45500700>70Wide
BFIR-5.5-0.825.45500800>70Wide
BFIR-5.5-125.455001000>70Wide
BFIR-6-0.525.46000500>70Wide
BFIR-6-0.725.46000700>70Wide
BFIR-6-0.825.46000800>70Wide
BFIR-6-125.460001000>70Wide
BFIR-6.5-0.525.46500500>70Wide
BFIR-6.5-0.725.46500700>70Wide
BFIR-6.5-0.825.46500800>70Wide
BFIR-6.5-125.465001000>70Wide
BFIR-7-0.525.47000500>70Wide
BFIR-7-0.725.47000700>70Wide
BFIR-7-0.825.47000800>70Wide
BFIR-7-125.470001000>70Wide
BFIR-7.5-0.525.47500500>70Wide
BFIR-7.5-0.725.47500700>70Wide
BFIR-7.5-0.825.47500800>70Wide
BFIR-7.5-125.475001000>70Wide
BFIR-8-0.525.48000500>70Wide
BFIR-8-0.725.48000700>70Wide
BFIR-8-0.825.48000800>70Wide
BFIR-8-125.480001000>70Wide
BFIR-8.5-0.525.48500500>70Wide
BFIR-8.5-0.725.48500700>70Wide
BFIR-8.5-0.825.48500800>70Wide
BFIR-8.5-125.485001000>70Wide
BFIR-9-0.525.49000500>70Wide
BFIR-9-0.725.49000700>70Wide
BFIR-9-0.825.49000800>70Wide
BFIR-9-125.490001000>70Wide
BFIR-9.5-0.525.49500500>70Wide
BFIR-9.5-0.725.49500700>70Wide
BFIR-9.5-0.825.49500800>70Wide
BFIR-9.5-125.495001000>70Wide
BFIR-10-0.525.410000500>70Wide
BFIR-10-0.725.410000700>70Wide
BFIR-10-0.825.410000800>70Wide
BFIR-10-125.4100001000>70Wide
BFIR-10.5-0.525.410500500>70Wide
BFIR-10.5-0.725.410500700>70Wide
BFIR-10.5-0.825.410500800>70Wide
BFIR-10.5-125.4105001000>70Wide
BFIR-11-0.525.411000500>70Wide
BFIR-11-0.725.411000700>70Wide
BFIR-11-0.825.411000800>70Wide
BFIR-11-125.4110001000>70Wide
BFIR-11.5-0.525.411500500>70Wide
BFIR-11.5-0.725.411500700>70Wide
BFIR-11.5-0.825.411500800>70Wide
BFIR-11.5-125.4115001000>70Wide

IR Longpass Filter

IR Longpass Filters transmit light higher than the cut-on wavelengths and attenuate the shorter wavelengths. Wavelength Opto-Electronic provides long pass filters of versatile coatings, cut-on wavelengths, sizes and shapes in the IR region. Customize IR Long pass filters are also available. These filters are popularly used in Spectroscopy, Thermography, and Metrology & Device Engineering.

Diameter Tolerance: +0/-0.2mm
Clear Aperture: >80%
Thickness: <10mm
Cut-on Tolerance: ±2nm
Cut-off Tolerance: ±2nm
Peak Transmission: >70-80%
Block: <0.1%
CWL Shift: <0.02nm/℃

Part NumberDia (mm)Cut-on λ (nm)Blocking λ (nm)Transmitting λ (nm)T (%)
LFIR-1.05-125.41050200-10501060-12000> 80
LFIR-1.5-125.41500200-15001510-12000> 80
LFIR-1.75-125.41750200-17501760-12000> 80
LFIR-2-125.42000200-20002010-12000> 80
LFIR-2.5-125.42500200-25002510-12000> 80
LFIR-3-125.43000200-30003010-12000> 80
LFIR-3.5-125.43500200-35003510-12000> 80
LFIR-4-125.44000200-40004010-12000> 80
LFIR-4.5-125.44500200-45004510-12000> 80
LFIR-5-125.45000200-50005010-12000> 80
LFIR-5.5-125.45500200-55005550-12000> 80
LFIR-6-125.46000200-60006020-12000> 80
LFIR-6.5-125.46500200-65006520-12000> 80
LFIR-7-125.47000200-70007050-12000> 80
LFIR-7.5-125.47500200-75007550-12000> 80
LFIR-8-125.48000200-80008030-12000> 80
LFIR-8.5-125.48500200-85008520-12000> 80
LFIR-9-125.49000200-90009050-12000> 80
LFIR-9.5-125.49500200-95009550-12000> 80
LFIR-10-125.410000200-1000010000-12000> 80
LFIR-10.5-125.410500200-1050010550-12000> 80
LFIR-11-125.411000200-1100011050-12000> 80
LFIR-11.5-125.411500200-1150011520-12000> 80

Enquire Now

You may tick one or more
Translate »
Scroll to Top