Linear Variable Filter for 1.3-2.6 µm (2%)

Stock LVF for 1.3-2.6 µm (2%)

Part Number: LVF-1.3-2.6-3.5-15-0.5-2%

15 mm x 3.5 mm x 0.5mm thick

£550.00 (Free Shipping)

  • Stock Linear Variable Filter for 1.3-2.6 µm (2%) “on the shelf” for next day shipping, 15 mm x 3.5 mm x 0.5mm thick
  • This linear variable filter (LVF) has a narrow band profile (FWHM=2% x Peak Wavelength).
  • The peak wavelength changes continuously from one side to the other across the range, see right in Fig 1.
  • All of our filters exhibit high angular tolerance, extremely low change with temperature and very high resistance to thermal shock.

Custom Quote

For large volumes and specific enquiries please contact us.


Call: +44 (0) 1455 613029

Fig 1

Features of 1st Generation Infrared Linear Variable Filters

  • 3 ranges covered, 0.9-1.7µm, 1.3-2.5 µm and 2.5-5.0 µm.
  • Width/FWHM =2% x Centre Wavelength.
  • Blocking greater than OD 2.5 average outside passband.

Optical Specification

Transmission50-75% across the band
Blocking RangeBasic range 1.2-2.6 µm, OD>2.5 ave. outside the transmission band.
(to extend blocking range a suitable bandpass filter may be added, for custom LVF s extra blocking can be added to the LVF itself)
Gradient of change85 nm/mm
Angle Of Incidence
Substrate15 mm x 3.5 mm x 0.5mm thick
Surface QualityLess than 60-40 Scratch-Dig

Environmental Specification

Mild AbraisionMIL-C-48497APara
Severe AbrasionMIL-C-48497APara
Water SolubilityMIL-C-48497APara


These LVF s can be used for compact mini spectrometers, gas analysis, plastics identification, a range of filters can be replaced with one linear variable filter.

Custom Linear Variable Filters

We manufacture custom LVF s to suit your particular application, contact us to discuss your needs in detail and full confidence.