IR Optics Infrared Optics IR Filter Infrared Filter

IR Bandpass Filters

A bandpass filter transmits a certain range of wavelengths and restricts unwanted wavelengths. These are angle-sensitive filters, so be careful while integrating them into a system. The transmission percentage of a filter can be improved by correctly coating the surface.

Infrared (IR) bandpass filters come in two types, narrow bandpass (up to 250nm bandwidth) and wide bandpass (more than 500nm bandwidth). The IR bandpass filters are used in applications like digital imaging, IR gas analysis, security systems, and high-temperature detection.

Customization

Don’t limit what you see. Customization may be available for this product. Let us know your specifications in the RFQ form. You may also browse our manufacturing capabilities.

Part NumberDimension (mm)Center λ (nm)FWHM (nm)T (%)Cut-off region (nm)
BFIR-900-70Ø25 x 3.590070≥90650-1250
BFIR-1.38-70Ø25 x 3.5138070≥85500-2000
BFIR-1.64-190Ø25.4 x 11640190≥ 80400-8000
BFIR-1.79-45Ø25 x 2179045≥80400-3000
BFIR-1.81-50Ø25 x 2181050≥80400-3000
BFIR-1.97-45Ø25 x 2197045≥80400-3000
BFIR-2-50Ø12 x 1200050≥50400-15000
BFIR-2.1-50Ø16 x 1210050≥90400-3000
BFIR-2.25-30Ø25.4 x 1225030≥85400-3000
BFIR-2.29-30Ø25.4 x 1229030≥85400-3000
BFIR-2.4-70Ø25 x 3.5240070≥75500-3000
BFIR-2.45-74Ø25 x 0.5245074≥701500-5500
BFIR-2.47-74Ø25 x 0.5247074≥701550-5500
BFIR-2.5-70Ø25.4 x 1250070≥80500-3000
BFIR-2.7-210Ø25.4 x 12700210≥80400-6000
BFIR-2.7-100Ø25.4 x 12700100≥801500-6500
BFIR-2.73-210Ø25.4 x 12730210≥80400-6000
BFIR-2.85-86Ø25 x 0.5285086≥801500-5500
BFIR-3.03-100Ø25.4 x 13030100≥80300-30000
BFIR-3.05-100Ø25.4 x 13050100≥80300-20000
BFIR-3.085-100Ø25.4 x 13085100≥80300-30000
BFIR-3.12-100Ø25.4 x 13120100≥80300-30000
BFIR-3.2-60Ø25.4 x 1320060≥80300-20000
BFIR-3.23-60Ø25.4 x 1323060≥80300-20000
BFIR-3.32-180Ø25 x 0.53320180≥80400-10000
BFIR-3.32-190Ø25 x 0.53320190≥80800-6000
BFIR-3.35-180Ø25 x 0.53350180≥80800-6000
BFIR-3.37-400Ø25 x 0.53370400≥801000-6000
BFIR-3.375-190Ø25 x 0.53375190≥80400-11000
BFIR-3.4-140Ø25 x 0.53400140≥80400-11000
BFIR-3.4-60Ø25.4 x 1340060≥80400-20000
BFIR-3.4-200Ø25.4 x 13400200≥80400-20000
BFIR-3.41-190Ø25 x 0.53410190≥80400-11000
BFIR-3.5-190Ø25 x 0.53500190≥80400-11000
BFIR-3.55-145Ø25.4 x 13550145≥75400-15000
BFIR-3.65-160Ø25.4x 13650160≥80400-20000
BFIR-3.7-200Ø25 x 0.53700200≥80400-8000
BFIR-3.75-200Ø25 x 0.53750200≥80400-8000
BFIR-3.8-400Ø25 x 0.53800400≥80400-7000
BFIR-3.8-200Ø25 x 0.53800200≥80400-15000
BFIR-3.8-190Ø25 x 0.53800190≥80400-20000
BFIR-3.84-180Ø25 x 0.53840180≥85400-11000
BFIR-3.85-200Ø25.4 x 13850200≥80300-20000
BFIR-3.9-90Ø25 x 0.5390090≥80400-11000
BFIR-3.9-180Ø25 x 0.53900180≥80400-11000
BFIR-3.9-200Ø25 x 0.53900200≥85400-8000
BFIR-3.95-200Ø25 x 0.53950200≥85400-8000
BFIR-4.1-200Ø25 x 0.54100200≥80400-8000
BFIR-4.15-600Ø25 x 0.54150600≥80400-11000
BFIR-4.19-160Ø25 x 0.54190160≥701000-9000
BFIR-4.2-380Ø25 x 0.54200380≥80400-11000
BFIR-4.25-50Ø25 x 0.5425050≥70400-11000
BFIR-4.26-90Ø25 x 0.5426090≥80400-20000
BFIR-4.26-150Ø25 x 0.54260150≥80400-11000
BFIR-4.26-160Ø25 x 0.54260160≥80400-11000
BFIR-4.26-600Ø25 x 0.54260600≥80400-11000
BFIR-4.27-600Ø25 x 0.54270600≥85400-11000
BFIR-4.29-270Ø25 x 0.54290270≥801000-8000
BFIR-4.29-530Ø25 x 0.54290530≥85400-11000
BFIR-4.3-120Ø25.4 x 0.54300120≥85400-20000
BFIR-4.3-160Ø25 x 0.54300160≥801000-9000
BFIR-4.3-220Ø25 x 0.54300220≥80400-11000
BFIR-4.3-250Ø25 x 0.54300250≥70400-11000
BFIR-4.3-410Ø25 x 0.54300410≥802000-13000
BFIR-4.3-420Ø25 x 0.54300420≥80400-7000
BFIR-4.32-600Ø25 x 0.54320600≥80400-11000
BFIR-4.4-30Ø25 x 0.5440030≥70400-11000
BFIR-4.4-420Ø25 x 0.54400420≥80400-11000
BFIR-4.5-130Ø25 x 0.54500130≥80400-11000
BFIR-4.5-200Ø25 x 0.54500200≥80400-8000
BFIR-4.6-180Ø25 x 0.54600180≥70400-11000
BFIR-4.7-140Ø25 x 0.54700140≥75400-10000
BFIR-4.7-200Ø25 x 0.54700200≥801500-5500
BFIR-4.7-80Ø25.4 x 1470080≥80400-15000
BFIR-4.8-230Ø18 x 0.34800230≥85400-6500
BFIR-4.8-180Ø20 x 14800180≥85400-11000
BFIR-4.9-230Ø18 x 0.34900230≥85400-6500
BFIR-5.02-240Ø25 x 0.55020240≥80400-7000
BFIR-5.1-100Ø25 x 15100100≥70400-20000
BFIR-5.2-610Ø25 x 0.55200610≥80400-11000
BFIR-5.2-90Ø25 x 0.5520090≥80400-11000
BFIR-5.3-610Ø25 x 0.55300610≥80400-10600
BFIR-5.4-610Ø25 x 0.55400610≥80400-10600
BFIR-5.75-160Ø25 x 0.55750160≥751000-10000
BFIR-6.2-125Ø25.4 x 16200125≥70400-15000
BFIR-6.3-110Ø18 x 0.96300110≥70400-11000
BFIR-6.43-170Ø25 x 0.56430170≥80400-11000
BFIR-6.557-190Ø25 x 0.56557190≥801000-8000
BFIR-6.68-170Ø25 x 0.56680170≥80400-8000
BFIR-6.74-90Ø20 x 1674090≥70400-10600
BFIR-7.1-360Ø25 x 0.57100360≥70400-10600
BFIR-7.2-310Ø20 x 17200310≥801000-10600
BFIR-7.3-120Ø12 x 17300120≥80400-11000
BFIR-7.4-360Ø25 x 0.57400360≥80400-10600
BFIR-7.5-2500Ø18 x 0.675002500≥90400-17100
BFIR-7.62-180Ø25 x 0.57620180≥80400-10600
BFIR-7.7-450Ø25.4 x 17700450≥80200-16000
BFIR-7.8-450Ø25.4 x 17800450≥80200-16000
BFIR-7.9-450Ø25 x 17900450≥90400-14000
BFIR-8-450Ø25 x 18000450≥90400-14000
BFIR-8.1-250Ø100 x 0.58100250>65400-11000
BFIR-8.25-250Ø100 x 0.58250250>90400-11000
BFIR-8.5-50Ø12 x 0.5850050>70400-13600
BFIR-9.5-55Ø12 x 0.5950055>70400-13600
BFIR-9.6-55Ø18 x 0.8960055>70400-13600
BFIR-9.7-55Ø12 x 0.5970055>70400-13600
BFIR-9.9-640Ø25 x 19900640≥85400-14000
BFIR-10.1-660Ø25 x 110100660≥85400-14000
BFIR-10.2-190Ø15 x 110200190≥70400-13600
BFIR-10.4-660Ø25 x 110400660≥85400-14000
BFIR-10.5-700Ø25.4 x 0.510500700≥85400-18000
BFIR-10.6-120Ø25 x 0.510600120≥60400-13600
BFIR-10.8-190Ø25.4 x 0.510800190≥85400-14000
BFIR-11.5-550Ø50 x 0.511500550≥65400-18000
BFIR-12.6-800Ø25 x 112600800≥85400-15000
BFIR-12.9-800Ø25 x 112900800≥85400-15000
BFIR-13-4000Ø18 x 0.9130004000≥851200-20000
BFIR-13.1-800Ø25 x 113100800≥85400-15000
BFIR-15-2200Ø21 x 2.2150002200≥652000-25000
BFIR-16-2400Ø12.5 x 1160002400≥702000-25000
BFIR-16.2-2400Ø12.5 x 1162002400≥702000-25000

 

IR Filter DiagramIR Filter Diagram 2Dimensional Tolerance: +0/-0.2mm
Clear Aperture: >90%
Thickness: <1mm
CWL Tolerance: ±2nm
FWHM Tolerance: ±2%
Average Transmission: >90%
Peak Transmission:
>93%
Block: <1%@200nm-11µm

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