IR bandpass filters 1080–1880 nm
A bandpass filter transmits light within a defined wavelength range, known as the passband. Blocking regions on either side suppress unwanted radiation, allowing a selected spectral range to pass.

General parameters
- Transmission
- > 50%
- Blocking
- < 0.1% of UV
- Ø 25.4mm
- CA > 22mm
- A
- up to 3200nm
- B
- up to 3500nm
- C
- up to 6500nm
- D
- up to FIR
- E
- up to 10500nm
- F
- up to 16500nm
- E**
- up to 13000nm
Stock range
Scroll the table sideways and down as needed.
| CWL [nm] | FWHM [nm] | Order No. ø25,4mm CA > 22mm |
|---|---|---|
| 1080±10 | 30±5 | bk-1080-030-A |
| 1100±25 | 90±25 | bk-1100-090-A |
| 1110±10 | 70±10 | bk-1110-070-A |
| 1140±5 | 10±3 | bk-1140-010-A |
| 1170±10 | 10±3 | bk-1170-010-A |
| 1190±5 | 10±3 | bk-1190-010-A |
| 1200±25 | 70±15 | bk-1200-070-A |
| 1210±10 | 10±3 | bk-1210-010-A |
| 1220±10 | 70±10 | bk-1220-070-A |
| 1225±5 | 10±3 | bk-1225-010-A |
| 1270±5 | 10±3 | bk-1270-010-A |
| 1270±10 | 80±10 | bk-1270-080-A |
| 1300±20 | 30±5 | bk-1300-030-B |
| 1300±20 | 75±30 | bk-1300-075-B |
| 1325±5 | 30±5 | bk-1325-030-B |
| 1330±5 | 30±5 | bk-1330-030-B |
| 1350±15 | 80±15 | bk-1350-080-B |
| 1375±10 | 85±10 | bk-1375-085-B |
| 1400±10 | 30±5 | bk-1400-030-B |
| 1400±10 | 90±20 | bk-1400-090-B |
| 1425±10 | 30±5 | bk-1425-030-B |
| 1430±5 | 8±3 | bk-1430-008-B |
| 1445±5 | 10±3 | bk-1445-010-B |
| 1450±10 | 32±5 | bk-1450-032-B |
| 1455±10 | 10±3 | bk-1455-010-B |
| 1460±10 | 85±10 | bk-1460-085-B |
| 1465±2 | 10±3 | bk-1465-010-B |
| 1470±10 | 33±5 | bk-1470-033-B |
| 1500±25 | 90±25 | bk-1500-090-B |
| 1530±10 | 33±5 | bk-1530-033-B |
| 1550±10 | 30±5 | bk-1550-030-B |
| 1570±10 | 30±10 | bk-1570-030-B |
| 1570±10 | 80±10 | bk-1570-080-B |
| 1600±10 | 33±5 | bk-1600-033-B |
| 1600±30 | 100±30 | bk-1600-100-B |
| 1620±5 | 10±3 | bk-1620-010-B |
| 1625±15 | 65±10 | bk-1625-065-B |
| 1630±5 | 10±3 | bk-1630-010-B |
| 1640±5 | 10±5 | bk-1640-010-B |
| 1650±10 | 35±5 | bk-1650-035-B |
| 1655±10 | 60±10 | bk-1655-060-B |
| 1670±10 | 37±5 | bk-1670-037-B |
| 1680±5 | 10±3 | bk-1680-010-B |
| 1690±5 | 10±3 | bk-1690-010-B |
| 1700±10 | 37±7 | bk-1700-037-B |
| 1700±30 | 90±30 | bk-1700-090-B |
| 1715±5 | 10±3 | bk-1715-010-B |
| 1720±5 | 10±3 | bk-1720-010-B |
| 1730±10 | 32±5 | bk-1730-032-B |
| 1745±15 | 90±15 | bk-1745-090-B |
| 1755±10 | 40±5 | bk-1755-040-B |
| 1765±5 | 10±3 | bk-1765-010-B |
| 1770±10 | 35±5 | bk-1770-035-B |
| 1775±15 | 100±15 | bk-1775-100-B |
| 1790±5 | 10±3 | bk-1790-010-B |
| 1800±20 | 40±7 | bk-1800-040-B |
| 1805±15 | 80±10 | bk-1805-080-B |
| 1810±5 | 10±3 | bk-1810-010-B |
| 1810±5 | 45±5 | bk-1810-045-B |
| 1820±5 | 10±3 | bk-1820-010-B |
| 1820±10 | 75±10 | bk-1820-075-B |
| 1820±10 | 80±10 | bk-1820-080-B |
| 1820±10 | 100±10 | bk-1820-100-B |
| 1830±10 | 37±7 | bk-1830-037-B |
| 1830±10 | 85±15 | bk-1830-085-B |
| 1835±10 | 65±10 | bk-1835-065-B |
| 1835±10 | 100±10 | bk-1835-100-B |
| 1840±5 | 10±3 | bk-1840-010-B |
| 1840±10 | 115±10 | bk-1840-115-B |
| 1850±10 | 37±5 | bk-1850-037-B |
| 1865±10 | 80±10 | bk-1865-080-B |
| 1865±10 | 100±15 | bk-1865-100-B |
| 1875±5 | 10±3 | bk-1875-010-B |
| 1880±10 | 100±15 | bk-1880-100-B |