BP4260nm Bandpass Filter | FWHM 90nm, Mid-Infrared

The OPTOStokes BP4260nm bandpass filter is engineered for high-precision mid-infrared (MWIR) applications, specifically optimized for advanced flame detection and optical gas sensing systems. Delivering a peak transmission of over 80% at the 4260nm center wavelength, this optical filter isolates critical emission bands while maintaining exceptional signal-to-noise ratios in challenging industrial environments.

Technical Specifications

Industrial Applications

This 4260nm interference filter serves as a core component in automated flame alarms and combustion monitoring systems, capturing the distinct carbon dioxide (CO2) emission spike. It is also widely integrated into environmental gas analyzers, medical diagnostics, and thermal imaging equipment requiring precise spectral discrimination in the MWIR spectrum.

Customization & OEM Services

OPTOStokes provides world-class quality with flexible manufacturing capabilities. To meet diverse system integration needs, we offer high-level customization support for various shapes—including square, circular, and custom geometeries—alongside specialized mounting ring options. Our extensive in-stock selection ensures reliable lead times for fast prototyping and high-volume production scaling.

Overcome Lead Time Constraints

Engineers often face critical project delays due to prolonged lead times and rigid customization limits from traditional optical component suppliers. OPTOStokes eliminates these bottlenecks by pairing guaranteed technical precision with responsive engineering support. Contact our technical sales team at sales@optofilters.com to discuss your specific custom requirements or to request a standard product quote.