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Optical
Filters>Intrared(IR)
Blocking Filters
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Infrared(IR) Blocking Filters((Reflective type,IR
coating)) |
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Application:
IR
cameras,Digital cameras,digital vidicons,CCTV,PC cameras,mobile
phones ,surveillance camera,digital imagers,color
imager,IR photometric systems,remote control
units,security systems,scanners.
Substrate:
B270/D263T/BK7 optical glass
Dimension:
Round Type:φ3mm~φ20mm
Squarte Type:3mm~15mm
Thickness:0.3mm~1.1mm
Custom design dimension available
Spectral Data:
Transmission wavelength:
Tave≥92％ Tmin≥85％
Rejection wavelength:
720～1100nm Tave≤1％ Tmax≤2%
850～1050nm Tave≤0.3％ Tmax≤1％
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The IR-cut filter is a short pass filter that blocks
infrared light and transmits the visible.
Infrared (IR) cut-off
filters are used with color CCD or CMOS imagers to produce true
color images. An IR cut-off filter blocks the transmission of
the infrared while passing the visible. This can be done with
two optical techniques: absorption or reflection. Absorptive
filters are made with special optical glass that absorbs near
infrared radiation. Reflection type filters are essentially
short-pass interference filters that reflect infrared light with
high efficiency. |
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