Applications

The 850nm bandpass filter is used in NIR imaging system to eliminate the influence of surrounding background light, including the visible and NIR. This filter is to increase the signal/noise ratio of the imager. The applications include secure monitoring, visual telephone, visual doorbell, digital telescope and other imaging systems.

Performance

Substrate: Float glass
Thickness:0.55±0.1mm
Dimension: 3.0mm~80mm
Tave>85% Tmin>80% at 830-870nm
T=50% at 830±10nm, 890±10nm
T<2% at 400-800 nm
Tave<3% at 950-1000 nm
T<5% at 1100 nm
Surface Quality: 60-40