UV longpass filters
Nearly 50 years of experience in coating processes and the new Magnetron Sputtering Technology combined with Japanese discipline, enables such outstanding specifications in all types of filters.
Product features:
The ASAHI Spectra UV long pass filters have very steep flanks between the reflection and passband regions, while maintaining very high transmittance in the UV transmission range. The spectral transmission properties are constant over the entire passband of the filters.
UV long pass filters can be combined in pairs with UV short pass filters to produce a variety of transmission bands.
Overview of the standard products of the UV long pass filters
| Description | Cut-on (nm) | Thickness (mm) | Item# 25mm dia. | Item# 50 x 50mm |
|---|---|---|---|---|
| Longtpass Filter / UV 250nm | 250 | 1 | XUL0250 | ZUL0250 |
| Longtpass Filter / UV 275nm | 275 | 1 | XUL0275 | ZUL0275 |
| Longtpass Filter / UV 300nm | 300 | 1 | XUL0300 | ZUL0300 |
| Longtpass Filter / UV 325nm | 325 | 1 | XUL0325 | ZUL0325 |
| Longtpass Filter / UV 350nm | 350 | 1 | XUL0350 | ZUL0350 |
| Longtpass Filter / UV 385nm | 385 | 1 | XUL0385 | ZUL0385 |
| Longtpass Filter / UV 400nm | 400 | 1 | XUL0400 | ZUL0400 |
The long pass filters are available in two standard sizes:
- Round with 25mm diameter or
- square 50x50mm
Special cuts or customized filters with other pass-through or blocking ranges can be made. Please contact your technical advisor for more information.