Spectrometer Accessory · Order-sorting filter
Linear variable long-pass filter
Linear Variable Long-Wave-Pass Filter
An ion-sputtered quartz filter whose long-wave-pass cut-off shifts continuously along its length. Mounted in front of the detector of a fibre spectrometer it blocks the higher diffraction orders of the grating across the whole spectrum at once.
41.4 × 9.5 × 1 mm
Standard size
Quartz
Substrate
Features
- Cut-off wavelength varies linearly along the filter
- Ion-sputtered coating on a quartz substrate: minimal autofluorescence, high laser-damage threshold
- Fits before the line-scan CCD of a fibre spectrometer
Applications
- Higher-order diffraction cut-off in spectrometers
Technical Specifications
Linear variable long-pass filter Specifications
Specifications
| Type | Linear variable long-wave-pass filter |
|---|---|
| Substrate | Quartz, ion-sputtered coating |
| Standard size | 41.4 × 9.5 × 1 mm |
| Position in the spectrometer | Continuously variable order-sorting filter in front of the line-scan detector, after the grating and focusing mirror |
We confirm sizes, variants and compatibility with your spectrometer before quotation.
Figures
Drawings, Photos and Measured Data
Pairs With
