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.
Bandpass filters are designed to isolate a region of the UV,visible,infrared spectrum. This is accomplished using a complex process of constructive and destructive interference.Band pass filters have bandwidths (measured at half-peak transmittance levels) less than 6% of the center of wavelength value.Our bandpass optical filters and narrow bandpass filters are coating on transparent optical glass or colored optical glass
Application:
CCTV camera,video doorbell,surveillance camera,digital telescope,IR receiver,telemetry controls,laser rangerfinder,laser speed measurement,biological detection,projector,Fingerprint Identification System,Human Face Identification System,Barcode Scanner
Substrate:B270,BK7, Float glass
Specification:
Size: 2×2mm ~ 81×81mm
Thickness: 0.4, 0.5, 0.7, 1.1mm
Surface Quality: 40/20, 60/40
400-800 nm : T<2%
835±10nm, 895±10nm: T=50%
830-870nm : Tave>85% Tmin>80%
950-1100 nm : Tave<2%
IR-CUT Switch changer, IR-CUT, IR Filter, OLPF filter, optical filter, D&R
filter, Day filter, Laser line filter, biomedical filter, Blue glass filter, Camera filter, filter, color
glass filter, etc