IR Bandpass Filters
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.
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.
Products
Specifications
Diagrams
Request for Quotation
| Part Number | Dimension (mm) | Center λ (nm) | FWHM (nm) | T (%) | Cut-off region (nm) |
|---|---|---|---|---|---|
| BFIR-900-70 | Ø25 x 3.5 | 900 | 70 | ≥90 | 650-1250 |
| BFIR-1.38-70 | Ø25 x 3.5 | 1380 | 70 | ≥85 | 500-2000 |
| BFIR-1.64-190 | Ø25.4 x 1 | 1640 | 190 | ≥ 80 | 400-8000 |
| BFIR-1.79-45 | Ø25 x 2 | 1790 | 45 | ≥80 | 400-3000 |
| BFIR-1.81-50 | Ø25 x 2 | 1810 | 50 | ≥80 | 400-3000 |
| BFIR-1.97-45 | Ø25 x 2 | 1970 | 45 | ≥80 | 400-3000 |
| BFIR-2-50 | Ø12 x 1 | 2000 | 50 | ≥50 | 400-15000 |
| BFIR-2.1-50 | Ø16 x 1 | 2100 | 50 | ≥90 | 400-3000 |
| BFIR-2.25-30 | Ø25.4 x 1 | 2250 | 30 | ≥85 | 400-3000 |
| BFIR-2.29-30 | Ø25.4 x 1 | 2290 | 30 | ≥85 | 400-3000 |
| BFIR-2.4-70 | Ø25 x 3.5 | 2400 | 70 | ≥75 | 500-3000 |
| BFIR-2.45-74 | Ø25 x 0.5 | 2450 | 74 | ≥70 | 1500-5500 |
| BFIR-2.47-74 | Ø25 x 0.5 | 2470 | 74 | ≥70 | 1550-5500 |
| BFIR-2.5-70 | Ø25.4 x 1 | 2500 | 70 | ≥80 | 500-3000 |
| BFIR-2.7-210 | Ø25.4 x 1 | 2700 | 210 | ≥80 | 400-6000 |
| BFIR-2.7-100 | Ø25.4 x 1 | 2700 | 100 | ≥80 | 1500-6500 |
| BFIR-2.73-210 | Ø25.4 x 1 | 2730 | 210 | ≥80 | 400-6000 |
| BFIR-2.85-86 | Ø25 x 0.5 | 2850 | 86 | ≥80 | 1500-5500 |
| BFIR-3.03-100 | Ø25.4 x 1 | 3030 | 100 | ≥80 | 300-30000 |
| BFIR-3.05-100 | Ø25.4 x 1 | 3050 | 100 | ≥80 | 300-20000 |
| BFIR-3.085-100 | Ø25.4 x 1 | 3085 | 100 | ≥80 | 300-30000 |
| BFIR-3.12-100 | Ø25.4 x 1 | 3120 | 100 | ≥80 | 300-30000 |
| BFIR-3.2-60 | Ø25.4 x 1 | 3200 | 60 | ≥80 | 300-20000 |
| BFIR-3.23-60 | Ø25.4 x 1 | 3230 | 60 | ≥80 | 300-20000 |
| BFIR-3.32-180 | Ø25 x 0.5 | 3320 | 180 | ≥80 | 400-10000 |
| BFIR-3.32-190 | Ø25 x 0.5 | 3320 | 190 | ≥80 | 800-6000 |
| BFIR-3.35-180 | Ø25 x 0.5 | 3350 | 180 | ≥80 | 800-6000 |
| BFIR-3.37-400 | Ø25 x 0.5 | 3370 | 400 | ≥80 | 1000-6000 |
| BFIR-3.375-190 | Ø25 x 0.5 | 3375 | 190 | ≥80 | 400-11000 |
| BFIR-3.4-140 | Ø25 x 0.5 | 3400 | 140 | ≥80 | 400-11000 |
| BFIR-3.4-60 | Ø25.4 x 1 | 3400 | 60 | ≥80 | 400-20000 |
| BFIR-3.4-200 | Ø25.4 x 1 | 3400 | 200 | ≥80 | 400-20000 |
| BFIR-3.41-190 | Ø25 x 0.5 | 3410 | 190 | ≥80 | 400-11000 |
| BFIR-3.5-190 | Ø25 x 0.5 | 3500 | 190 | ≥80 | 400-11000 |
| BFIR-3.55-145 | Ø25.4 x 1 | 3550 | 145 | ≥75 | 400-15000 |
| BFIR-3.65-160 | Ø25.4x 1 | 3650 | 160 | ≥80 | 400-20000 |
| BFIR-3.7-200 | Ø25 x 0.5 | 3700 | 200 | ≥80 | 400-8000 |
| BFIR-3.75-200 | Ø25 x 0.5 | 3750 | 200 | ≥80 | 400-8000 |
| BFIR-3.8-400 | Ø25 x 0.5 | 3800 | 400 | ≥80 | 400-7000 |
| BFIR-3.8-200 | Ø25 x 0.5 | 3800 | 200 | ≥80 | 400-15000 |
| BFIR-3.8-190 | Ø25 x 0.5 | 3800 | 190 | ≥80 | 400-20000 |
| BFIR-3.84-180 | Ø25 x 0.5 | 3840 | 180 | ≥85 | 400-11000 |
| BFIR-3.85-200 | Ø25.4 x 1 | 3850 | 200 | ≥80 | 300-20000 |
| BFIR-3.9-90 | Ø25 x 0.5 | 3900 | 90 | ≥80 | 400-11000 |
| BFIR-3.9-180 | Ø25 x 0.5 | 3900 | 180 | ≥80 | 400-11000 |
| BFIR-3.9-200 | Ø25 x 0.5 | 3900 | 200 | ≥85 | 400-8000 |
| BFIR-3.95-200 | Ø25 x 0.5 | 3950 | 200 | ≥85 | 400-8000 |
| BFIR-4.1-200 | Ø25 x 0.5 | 4100 | 200 | ≥80 | 400-8000 |
| BFIR-4.15-600 | Ø25 x 0.5 | 4150 | 600 | ≥80 | 400-11000 |
| BFIR-4.19-160 | Ø25 x 0.5 | 4190 | 160 | ≥70 | 1000-9000 |
| BFIR-4.2-380 | Ø25 x 0.5 | 4200 | 380 | ≥80 | 400-11000 |
| BFIR-4.25-50 | Ø25 x 0.5 | 4250 | 50 | ≥70 | 400-11000 |
| BFIR-4.26-90 | Ø25 x 0.5 | 4260 | 90 | ≥80 | 400-20000 |
| BFIR-4.26-150 | Ø25 x 0.5 | 4260 | 150 | ≥80 | 400-11000 |
| BFIR-4.26-160 | Ø25 x 0.5 | 4260 | 160 | ≥80 | 400-11000 |
| BFIR-4.26-600 | Ø25 x 0.5 | 4260 | 600 | ≥80 | 400-11000 |
| BFIR-4.27-600 | Ø25 x 0.5 | 4270 | 600 | ≥85 | 400-11000 |
| BFIR-4.29-270 | Ø25 x 0.5 | 4290 | 270 | ≥80 | 1000-8000 |
| BFIR-4.29-530 | Ø25 x 0.5 | 4290 | 530 | ≥85 | 400-11000 |
| BFIR-4.3-120 | Ø25.4 x 0.5 | 4300 | 120 | ≥85 | 400-20000 |
| BFIR-4.3-160 | Ø25 x 0.5 | 4300 | 160 | ≥80 | 1000-9000 |
| BFIR-4.3-220 | Ø25 x 0.5 | 4300 | 220 | ≥80 | 400-11000 |
| BFIR-4.3-250 | Ø25 x 0.5 | 4300 | 250 | ≥70 | 400-11000 |
| BFIR-4.3-410 | Ø25 x 0.5 | 4300 | 410 | ≥80 | 2000-13000 |
| BFIR-4.3-420 | Ø25 x 0.5 | 4300 | 420 | ≥80 | 400-7000 |
| BFIR-4.32-600 | Ø25 x 0.5 | 4320 | 600 | ≥80 | 400-11000 |
| BFIR-4.4-30 | Ø25 x 0.5 | 4400 | 30 | ≥70 | 400-11000 |
| BFIR-4.4-420 | Ø25 x 0.5 | 4400 | 420 | ≥80 | 400-11000 |
| BFIR-4.5-130 | Ø25 x 0.5 | 4500 | 130 | ≥80 | 400-11000 |
| BFIR-4.5-200 | Ø25 x 0.5 | 4500 | 200 | ≥80 | 400-8000 |
| BFIR-4.6-180 | Ø25 x 0.5 | 4600 | 180 | ≥70 | 400-11000 |
| BFIR-4.7-140 | Ø25 x 0.5 | 4700 | 140 | ≥75 | 400-10000 |
| BFIR-4.7-200 | Ø25 x 0.5 | 4700 | 200 | ≥80 | 1500-5500 |
| BFIR-4.7-80 | Ø25.4 x 1 | 4700 | 80 | ≥80 | 400-15000 |
| BFIR-4.8-230 | Ø18 x 0.3 | 4800 | 230 | ≥85 | 400-6500 |
| BFIR-4.8-180 | Ø20 x 1 | 4800 | 180 | ≥85 | 400-11000 |
| BFIR-4.9-230 | Ø18 x 0.3 | 4900 | 230 | ≥85 | 400-6500 |
| BFIR-5.02-240 | Ø25 x 0.5 | 5020 | 240 | ≥80 | 400-7000 |
| BFIR-5.1-100 | Ø25 x 1 | 5100 | 100 | ≥70 | 400-20000 |
| BFIR-5.2-610 | Ø25 x 0.5 | 5200 | 610 | ≥80 | 400-11000 |
| BFIR-5.2-90 | Ø25 x 0.5 | 5200 | 90 | ≥80 | 400-11000 |
| BFIR-5.3-610 | Ø25 x 0.5 | 5300 | 610 | ≥80 | 400-10600 |
| BFIR-5.4-610 | Ø25 x 0.5 | 5400 | 610 | ≥80 | 400-10600 |
| BFIR-5.75-160 | Ø25 x 0.5 | 5750 | 160 | ≥75 | 1000-10000 |
| BFIR-6.2-125 | Ø25.4 x 1 | 6200 | 125 | ≥70 | 400-15000 |
| BFIR-6.3-110 | Ø18 x 0.9 | 6300 | 110 | ≥70 | 400-11000 |
| BFIR-6.43-170 | Ø25 x 0.5 | 6430 | 170 | ≥80 | 400-11000 |
| BFIR-6.557-190 | Ø25 x 0.5 | 6557 | 190 | ≥80 | 1000-8000 |
| BFIR-6.68-170 | Ø25 x 0.5 | 6680 | 170 | ≥80 | 400-8000 |
| BFIR-6.74-90 | Ø20 x 1 | 6740 | 90 | ≥70 | 400-10600 |
| BFIR-7.1-360 | Ø25 x 0.5 | 7100 | 360 | ≥70 | 400-10600 |
| BFIR-7.2-310 | Ø20 x 1 | 7200 | 310 | ≥80 | 1000-10600 |
| BFIR-7.3-120 | Ø12 x 1 | 7300 | 120 | ≥80 | 400-11000 |
| BFIR-7.4-360 | Ø25 x 0.5 | 7400 | 360 | ≥80 | 400-10600 |
| BFIR-7.5-2500 | Ø18 x 0.6 | 7500 | 2500 | ≥90 | 400-17100 |
| BFIR-7.62-180 | Ø25 x 0.5 | 7620 | 180 | ≥80 | 400-10600 |
| BFIR-7.7-450 | Ø25.4 x 1 | 7700 | 450 | ≥80 | 200-16000 |
| BFIR-7.8-450 | Ø25.4 x 1 | 7800 | 450 | ≥80 | 200-16000 |
| BFIR-7.9-450 | Ø25 x 1 | 7900 | 450 | ≥90 | 400-14000 |
| BFIR-8-450 | Ø25 x 1 | 8000 | 450 | ≥90 | 400-14000 |
| BFIR-8.1-250 | Ø100 x 0.5 | 8100 | 250 | >65 | 400-11000 |
| BFIR-8.25-250 | Ø100 x 0.5 | 8250 | 250 | >90 | 400-11000 |
| BFIR-8.5-50 | Ø12 x 0.5 | 8500 | 50 | >70 | 400-13600 |
| BFIR-9.5-55 | Ø12 x 0.5 | 9500 | 55 | >70 | 400-13600 |
| BFIR-9.6-55 | Ø18 x 0.8 | 9600 | 55 | >70 | 400-13600 |
| BFIR-9.7-55 | Ø12 x 0.5 | 9700 | 55 | >70 | 400-13600 |
| BFIR-9.9-640 | Ø25 x 1 | 9900 | 640 | ≥85 | 400-14000 |
| BFIR-10.1-660 | Ø25 x 1 | 10100 | 660 | ≥85 | 400-14000 |
| BFIR-10.2-190 | Ø15 x 1 | 10200 | 190 | ≥70 | 400-13600 |
| BFIR-10.4-660 | Ø25 x 1 | 10400 | 660 | ≥85 | 400-14000 |
| BFIR-10.5-700 | Ø25.4 x 0.5 | 10500 | 700 | ≥85 | 400-18000 |
| BFIR-10.6-120 | Ø25 x 0.5 | 10600 | 120 | ≥60 | 400-13600 |
| BFIR-10.8-190 | Ø25.4 x 0.5 | 10800 | 190 | ≥85 | 400-14000 |
| BFIR-11.5-550 | Ø50 x 0.5 | 11500 | 550 | ≥65 | 400-18000 |
| BFIR-12.6-800 | Ø25 x 1 | 12600 | 800 | ≥85 | 400-15000 |
| BFIR-12.9-800 | Ø25 x 1 | 12900 | 800 | ≥85 | 400-15000 |
| BFIR-13-4000 | Ø18 x 0.9 | 13000 | 4000 | ≥85 | 1200-20000 |
| BFIR-13.1-800 | Ø25 x 1 | 13100 | 800 | ≥85 | 400-15000 |
| BFIR-15-2200 | Ø21 x 2.2 | 15000 | 2200 | ≥65 | 2000-25000 |
| BFIR-16-2400 | Ø12.5 x 1 | 16000 | 2400 | ≥70 | 2000-25000 |
| BFIR-16.2-2400 | Ø12.5 x 1 | 16200 | 2400 | ≥70 | 2000-25000 |
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/℃
FAQ
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.