A longpass (LP) Filter is a coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared).
A band-pass filter passes frequencies within a certain range and rejects (attenuates) frequencies outside that range.
We hold stock of raw Schott filter material and can quote for custom sizes
| MATERIAL: | SCHOTT ® Filter Glass |
| SURFACE QUALITY: | Ø12.5mm ≤ 3 fringes |
| DIAMETER TOLERANCE: | +0.0 / -0.2mm |
| SURFACE QUALITY: | Ø25.0mm ≤ 5 fringes |
| SQUARE TOLERANCE: | ± 0.2mm |
| SURFACE QUALITY: | Ø50.0mm ≤ 8 fringes |
| THICKNESS TOLERANCE: | ± 0.2mm |
| PARALLELISM: | ≤ 3 arc minutes |
| SURFACE QUALITY: | 60/40 |
| EDGES: | fine ground |
Stock Schott Longpass Filters
A longpass (LP) Filter is a coloured glass filter that attenuates shorter wavelengths and transmits (passes) longer wavelengths over the active range of the target spectrum (ultraviolet, visible, or infrared).
A band-pass filter passes frequencies within a certain range and rejects (attenuates) frequencies outside that range.
We hold stock of raw Schott filter material and can quote for custom sizes
CUSTOM SIZES AND THICKNESSES AVAILABLE ON REQUEST
PLEASE ENQUIRE FOR CUSTOM COATINGS