Notch Filter / NF
Notch filter is a filter that cuts only a specific wavelength. It is not the same as the interference filter which transmits only a specific wavelength. By using a dielectric multilayer coating the product has very high stability and has environmental resistance.
Four types are available 355nm, 532nm, 633nm and 1064nm.Because it is a dielectric multilayer coating, there is almost no absorption by the coating.
By using in combination with other filters, it can also be used as filter sets for Bio-Imaging.
Common Specifications
| Coating | Dielectric multi-layer coating |  |
|---|---|---|
| Incident Angle | 0° | |
| Surface Quality (Scratch-Dig) | 60－40 | |
| Clear aperture | 90% of Actual Aperture |
| Schematic | Outline Drawing |
|---|---|
 |
 |
| Part Number | Cutoff wavelength | Optical Density (OD) | Half Bandwidth | Transmittance wavelength ranges | Transmittance | Material |
|---|---|---|---|---|---|---|
| NF-25C05-27-355 | 355nm | ＞4 | 27±2.7nm | 320 - 355nm 375 - 500nm | Average 90％ | Synthetic fused silica |
| NF-25C05-40-532 | 532nm | ＞4 | 40±4.0nm | 400 - 502nm 562 - 700nm | Average 90％ | BK7 |
| NF-25C05-47-633 | 633nm | ＞4 | 47±4.7nm | 475 - 597nm 669 - 850nm | Average 90％ | BK7 |
| NF-25C05-80-1064 | 1064nm | ＞4 | 80±8.0nm | 800 - 1004nm 1124 - 1400nm | Average 90％ | BK7 |
Shop By
Shopping Options
