INBP3300 IR Narrow Bandpass Filter | CWL 3300nm, FWHM 160nm, OD2

The OPTOStokes INBP3300 is a high-precision mid-infrared narrow bandpass filters engineered for hydrocarbon detection and VOC leak monitoring systems. Fabricated with precision thin-film coating on sapphire and germanium substrates, it delivers peak transmission greater than 80 percent at a center wavelength of 3300nm with ±30nm tolerance, aligned with the characteristic C-H vibrational absorption peak of aromatic compounds such as benzene and toluene. Featuring high OD blocking performance, this component provides reliable optical density greater than 2 across the entire 2000–10000nm out-of-band range, effectively suppressing background infrared interference for high-sensitivity analytical instruments and non-dispersive infrared gas detection systems.

Technical Specifications

Applications

This mid-infrared narrow bandpass filter is specifically optimized for targeting the C-H bond fundamental absorption band around 3.3μm, enabling quantitative detection of hydrocarbon and aromatic VOC species. Its robust dual-substrate construction and stable spectral response make it ideal for:

• Industrial VOC fugitive leak monitoring and petrochemical safety inspection

• Benzene, toluene and aromatic compound concentration measurement systems

• NDIR infrared gas analyzers and hydrocarbon detection instruments

• Environmental air quality monitoring and industrial emission testing

• Process monitoring for chemical and petrochemical production lines

• Portable and fixed gas safety detection and alarm systems

Customization & Service

OPTOStokes offers comprehensive custom infrared filter solutions to meet your exact gas detection and analytical requirements. We manufacture infrared bandpass filters in standard circular, square and custom irregular shapes, with optional precision mounting rings for seamless integration into your optical assemblies. Our extensive in-stock inventory ensures fast shipping for standard specifications, while our advanced thin-film coating and infrared substrate processing capabilities deliver custom orders with reliable, predictable lead times. All products are manufactured to world-class quality standards and undergo rigorous 100 percent optical testing before shipment.

Pain Points & CTA

Gas detection and analytical instrument teams often face critical challenges: misaligned center wavelength leading to reduced absorption sensitivity, insufficient broadband blocking causing elevated baseline noise, and long lead times for custom sapphire-germanium infrared components. These issues can raise detection limits, increase false alarm rates, and delay instrument deployment schedules. At OPTOStokes, we solve these problems with our extensive ready-to-ship inventory, precision infrared coating technology, and dedicated technical support team. Whether you need a single prototype for testing or high-volume production runs, we deliver precision optical components on time, every time.

For detailed datasheets, volume pricing, or to discuss your specific infrared filter requirements, contact our expert team at sales@optofilters.com or submit an inquiry through our website today.