850nm IR bandpass Filter for LPR/ANPR(BPF-850BC)

Application:CCTV camera,video doorbell,surveillance camera,telemetry controls,laser rangerfinder,laser speed measurement,biological detection,Fingerprint Identification System,Human Face Identification System,Barcode Scanner
Substrate：color glass,Soda-lime glass
Package：Thin film package or capacitor paper vacuum package

Definition of Bandpass Filters

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.FWHM is full width at half maximum.CWL means center wavelength

Bandpass Filters(UV,visible,IR) List


Part No：BPF-850BC
Name：850nm bandpass filter，LPR Filter
Application：ANPR，licence plate recognise
Feature：deep blocking ，grey type images
Substrate：color glass,Soda-lime glass
Size：Φ12X2.0mm,custom design available



Optical parameter

CWL：850ª10nm，Tpeak>85% FWHM：60ª10nm，
Blocking：Tave<0.5%，Tmax<1%@300-790nm and 920-1100nm


Definition of a ANPR or LPR filter

An ANPR filter is used on ANPR cameras. ANPR is Automatic Number Plate Recognition.
A LPR filter is used on LPR camera. LPR is License Plate Recognition.
Recognizing a vehicle number plate is a too difficult job for a standard CCTV camera. The main problem is the exposure caused by headlight at night, but even during the day the light reflection on the number plate can make the number recognition virtually impossible.Accute Optical’s part BPF-850BC is a 850nm IR bandpass filter,which is specially designed for ANPR or LPR cameras. It can remove strong light or glare form the headlight and get clear grey images.