carbon ir filter are mainly used in the field of security monitoring, infrared gas analyzers, night vision products, infrared detectors, infrared receivers, infrared sensors, and infrared communication products. Specific products such as: surveillance cameras, remote controls, infrared curtain wall products, infrared induction toilets, faucets, hand sanitizer devices, infrared thermometers, infrared printers, interactive whiteboards, infrared touch screens, fingerprint recognition machines, face recognition systems Wait.
carbon ir filter
Refers to the deep red filter used in infrared photography. Even if the color is not too deep, there will be a corresponding effect.
Wavelength division of infrared light
The infrared band includes a wide range of wavelengths, from 780nm to 14um, which is divided into near-infrared, mid-infrared and far-infrared. Near infrared (code name IR-A, wavelength 780～1500nm, NIR), mid-infrared (IR-B, 1500～6000nm, MIR), far infrared (IR-C, 6000～14000nm, FIR).
carbon ir filter
Divided from the material, there are optical glass coatings, colored glass, and plastic infrared filters. This refers to the near infrared filter. If it involves mid-to-far infrared, the materials include Si, ZnSe, Sapphire, CaF2, quartz glass, etc.
From the perspective of optical characteristics, there are long pass type IR long pass filter and band pass type IRcarbon ir filter. Among them, the long wave pass type:
(1)Made of colored glass, usually black, such as IPG-800. It absorbs visible light and allows infrared light to pass through. If you look at the sun through this infrared filter, you can still see a red sun. Suitable for infrared imaging.
(2)The carbon ir filter is made by vacuum coating on optical white glass, such as IPGC-720, this type is also called optical cold mirror, which reflects visible light and allows infrared light to pass through. The exterior looks silver, like a mirror. If it is a mid-to-far infrared filter, it should be coated on Si, Sapphire, and quartz glass.
(3)The carbon ir filter made of special plastic has a black appearance. If you look at the sun through this infrared filter, you can also see a red sun. The plastic material can be PC or PMMA.
Besides the band-pass type, the band-pass filter is made of vacuum coating. For near-infrared bandpass, it is coated on white glass. If it is mid-to-far infrared, it will be coated on Sapphire. Everyone can add. Among them, the corresponding light sources of the near-infrared bandpass filter are mainly infrared IR LEDs and infrared lasers, so the main wavelengths are 808nm, 850nm, 905nm, 940nm, 1064nm, and there is also an unusual 780nm. So the wavelengths of commonly used near-infrared filters are mainly these. The corresponding models are BPF-850, NBF-808, BPF-940.
The wavelength of the infrared bandpass filter produced is generally in the range of 2-25um, and the substrate is coated with silicon, germanium, sapphire, magnesium fluoride, calcium fluoride, etc. The peak value of the filter can reach more than 75%.
The product has deep cut-off rate, steep cut-off band and wide cut-off range, and can be customized according to customer requirements. Products are mainly used in sensors in laser, imaging, detection, temperature measurement, sensing, aerospace and other fields. All are also called special filters for infrared sensors.
carbon ir filter Application:products are mainly used in: infrared measurement, infrared thermometer, infrared thermal imaging camera, gas detector.