Optical Interference Bandpass Filters
High Performance Thin Film Optical Filters
Knight Optical's optical interference bandpass filters transmit a precise wavelength while blocking unwanted light.
Stock Interference Filters from 214-2000nm
With 3nm narrowband widths to 100nm broadband optical filters availble, which are hermetically sealed and CNC-scribed for long-term stability.
Laser line, Fluorescence, and Imaging Applications
Stock filters provide a cost effective solution for prototyping.
Custom Optical Interference Filters Available
If our stock optical interference bandpass filters do not meet your requirements, bespoke designs are available upon request.
| Name | CWL(nm) | Peak Transmission (%) | FWHM | Diameter (mm) | Thickness (mm) | Blocking Type | Avg. Blocking Range | Avg. Blocking OD | Price | Buy |
| 940DIW25 | 940 | 70 | 60 | 25 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$175.00
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| 940DIW12 | 940 | 70 | 60 | 12.5 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$107.45
|
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| 940DIR12 pdf | 940 | 70 | 45 | 12.5 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$107.45
|
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| 940DIB25 pdf | 940 | 50 | 10 | 25 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$175.00
|
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| 940DIB12 pdf | 940 | 50 | 10 | 12.5 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$107.45
|
|
| 930DIB12 pdf | 930 | 50 | 10 | 12.5 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$107.45
|
|
| 920DIB25 pdf | 920 | 50 | 10 | 25 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$175.00
|
|
| 920DIB12 pdf | 920 | 50 | 10 | 12.5 | 6.1 | Dielectric | 200nm to 1150nm | 5 |
US$107.45
|
|
| 905FIR25 pdf | 905 | 70 | 45 | 25 | 6.1 | Silver | 200nm to 1150nm | 5 |
US$157.49
|
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| 900FIR12 pdf | 900 | 70 | 45 | 12.5 | 6.1 | Silver | 200nm to 1150nm | 5 |
US$96.61
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