IR Wide Bandpass Filter High Transmission 1.65μm to 2.35μm

Coligh is the manufacturer of ir bandpass filter. IR wide bandpass filter high transmission 1.65μm to 2.35μm is an optical filter engineered to transmit at 1.65μm to 2.35μm and block the other unwanted wavelength at the same time. This filter is ideal for the applications that require a wide infrared bandpass and precise spectral control.

 

 

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IR Wide Bandpass Filter High Transmission 1.65μm to 2.35μm Standard Specifications:

• Type: Infrared Bandpass Filter
• Coating Type: Hard Coating
• 50% Cut On wavelength: 1650+/-50nm
• 50% Cut off wavelength: 2350+/-50nm
• High Transmission Wavelength range: 1700-2250nm
• Peak Transmission: >=80%
• BLocking range: 400-4000nm
• Blocking depth: Tave<10%
• Substrate Material: Silicon
• Thickness: 0.5mm
• Size: Dia100*0.5mm, Dia5*0.5mm or we can cut and grand according to client’s request.

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IR Bandpass Filter Custom Options:

• Wavelength range: 1000nm-14000nm
• Filter Type: Wide Bandpass Filter and Narrow Bandpass Filter
• Narrow bandpass Filter FWHM: 15nm to 600nm
• Wide Bandpass Filter Transmission: up to 8000nm wavelength range high transmission
• Size: Up to 150mm diameter
• Substrate Material: JGS3, Fused Silica, Sappire, Silicon Quatarz

 

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Infrared Bandpass Filter Applications:

• Gas sensing: This infrared broadband filter can detect gases such as CH₄ (methane), C₂H₆ (ethane), CO₂, and NH₃, which have absorption characteristics within this wavelength band. Combined with a detector, it can be used for gas monitoring of these gases.
• Agricultural remote sensing: Different materials have varying spectral absorption differences in the 1.65-2.35μm band. This filter can identify crop moisture content, maturity, and disease status in the 1.7–2.2μm band.
• Environment monitoring: The 1.65-2.35μm wavelength range is characteristic for many key gases. This filter can extract gas absorption signals for long-term identification and tracking, making it particularly effective for environmental monitoring.