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Short Pass Optical Filters

Sofradir IR Viewers are nearing the end life as a product line.
We can offer an alternative though, so please contact us!


Short Pass Filters


These optical filters are perfect for many imaging applications that benefit from blocking the transmission of long-wave electromagnetic radiation while allowing short-wave to pass through

Features

  • Highly transmissive up to near-infrared band
  • Blocks wavelengths from near-infrared and longer
  • Sharp cut-off with 40nm transition from 1% to first peak (typical)



Specifications


Diameter
25.4mm +0.0/-0.25mm
Clear Aperture
20mm
Thickness
3-5mm (nominal)
Surface Finish
Commercial Polish
Blocking Range
120% of cut-off wavelength
to Brange 0.1% transmittance
Rise from 1% T
to First Peak
40mm typical


λc = Cut-on wavelength at which transmission is 50% Tpeak
Tpeak = Typical Average Transmission in passband
Prange = Passband spectral range
Brange = Blocking spectral range


Ordering Information


Item
Discription
λc=700nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=750nm ±10nm, Tpeak=70%, Prange to 415nm, Brange to 1,200nm
λc=800nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=850nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=900nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=950nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=1000nm ±10nm, Tpeak=75%, Prange to 415nm, Brange to 1,200nm
λc=2,000nm ±50nm, Tpeak=70%, Prange to 1,5000nm, Brange to 4,500nm
λc=3,000nm ±100nm, Tpeak=70%, Prange to 1,700nm, Brange to 10,000nm
λc=4,100nm ±100nm, Tpeak=70%, Prange to 2,500nm, Brange to 10,000nm

Requires a filter holder for use with the 7215 or 7290A series.
Please order:
- F25 Filter Holder for 7215 series ElectroViewers
or
- G25 Filter Slide for 7290 series MicronViewers