Splitting Incident Light
Edge filters typically split a spectral band of interest into two narrower bands – one transmitted and one reflected (or absorbed). The transition from one band to the other defines the ‘edge’ of the optical filter and is typically defined at either the 5% (absolute) or 50% (relative) transmission wavelength.
Edge filters used to transmit wavelengths shorter than the edge are typically called shortpass (SP) optical filters, while those transmitting wavelengths longer than the edge area called longpass (LP) optical filters. Short-wave pass and long-wave pass optical filters can be used as stand-alone filter solutions or in combination to filter a broader spectral band (two filters of same type) or to generate a passband within the selected spectral band (short/long pass filters used in combination).
Custom prototypes to volume production are available.
Contact us with your custom optical coating requirements!
SPECIFICATIONS:
| Edge Filter Coating Types: | Shortwave Pass (SWP) and Longwave Pass (LWP) |
| Size: | Per your request |
| Transmission: | High In-Band |
| Slope: | Sharp Cut-On and Cut-Off |
APPLICATIONS
- Industrial
- Laser Systems
- Fluorescence Imaging
- Target Designation
- Military Imaging
- Order Sorting
- Color Enhancement and Combining
- Life Science Systems
- Projection Systems
- Microscopy
- Hyperspectral Sensors
- Photometry
- FTIR Spectroscopy
- Thermal Imaging