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2260/50nm Interference Bandpass Infrared Filter
2260/50nm Interference Bandpass Infrared Filter is an optical filter centered wavelength 2260nm and 50nm bandwidth. Coligh is a manufacturer of infrared filter.
- Center wavelength 2260nm
- FWHM 50nm
- OD3 Blocking depth
- Transmission above 90%
- Single Substrate bandpass interference filter
- A wide range of wavelengthswith both broadband and narrowband options in stock and also custom acceptable.
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2260/50nm Optical Interference Narrow Bandpass Infrared Filter Description
2260/50nm interference bandpass infrared filter is a high-performance optical mid-infrared filter designed for precise infrared spectroscopy analysis and narrowband signal detection.
- The central wavelength is 2260+/-10nm, which accurately screens the target infrared signal, suitable for the extraction and amplification of weak signals, and improves the detection sensitivity.
- Highly transparent in the range of 2260+/-25nm, the transmittance is greater than or equal to 90%, and the optical loss is extremely low.
- The cut-off depth OD3 in the range of 200-3000nm outside the passband suppresses the interference of background thermal radiation and sunlight.
- We have abundant inventory and strong customization capabilities. Single-substrate bandpass interference filters cover a wide range of wavelengths.
- A variety of broadband and narrowband options are available , and on-demand customization is supported to meet the precise spectral requirements of different infrared application fields.
2260/50nm Interference Bandpass Infrared Filter Technical Datasheet
| Parameter | Specification |
| Center Wavelength (CWL) | 2260 nm ± 10 nm |
| Transmission bandwidth | 2260+/-110nm |
| Peak Transmission | >=90% |
| Blocking Range | 200-3000nm |
| Optical Density (Blocking) | OD3 |
| Substrate Material | White Glass，Sapphire，Silicon ， Fused Silica , Zinc Selenide or other IR-grade substrate |
| Surface Quality | 80-50, 60-40, 40-20 scratch-dig (per MIL-PRF-13830B) |
| Clear Aperture | ≥ 90% of diameter |
| Typical Thickness | 0.5+/-0.1mm, 1.0+/-0.1mm |
| Typical Size | Dia25mm, Dia25.4mm, Dia50mm, Dia100mmm |
| Coating Type | Hard-coated dielectric |
| Environmental Durability | MIL-STD-810 compliant |
| Custom Capability | Up to 30000nm narrow or wide band bandpass filter |
2260/50nm Interference Bandpass Infrared Filter Applications
- Gas leak monitoring
Carbon monoxide and nitrous oxide have strong absorption peaks near 2260nm, and the 50nm bandwidth can cover the absorption spectrum and exclude interference from other gases. The 2260/50nm narrowband filter can isolate the characteristic wavelength of the target gas and suppress the environmental thermal radiation noise. Realize 24/7 real-time gas leak warning for chemical plants and refineries to ensure production safety. - Environmental atmosphere monitoring
Atmospheric pollutants such as methane and industrial waste gas have unique spectral characteristics in the 2260nm band, and narrowband filters can improve the signal-to-noise ratio of satellite or drone remote sensing. The 2260/50nm mid-infrared filter can screen the scattering or absorption signals of specific pollutants and suppress interference from cloud and surface reflections. Realize accurate positioning of regional pollution sources and emission assessment, and help environmental protection supervision. - Medical imaging
The thermal radiation characteristics of inflammation or tumor areas in human tissues are significant in the 2260nm band, and the 50nm bandwidth can capture abnormal temperature distribution. This filter can shield ambient light interference, enhance the temperature contrast of the lesion area, and achieve non-invasive early disease screening
