BP940 Bandpass Filter | 30nm FWHM, >90% Transmission, OD2 Blocking

BP940 Bandpass Filter | 30nm FWHM, >90% Transmission, OD2 Blocking

The OPTOStokes BP940 is a precision NIR bandpass filter centered at 940nm, engineered with high-stability hard dielectric thin-film coatings to deliver exceptional peak transmission and robust out-of-band rejection. Deposited on high-quality optical substrates via advanced vacuum coating processes, this filter maintains consistent spectral performance under varying temperature and humidity conditions, making it suitable for both laboratory R&D prototyping and high-volume OEM integration. Its 30nm bandwidth balances sufficient signal throughput with effective background noise suppression, helping optical systems achieve improved signal-to-noise ratio in near-infrared detection setups.

Technical Specifications

Applications

This 940nm bandpass filter is widely deployed across industrial, scientific, and commercial optical systems. Common applications include machine vision inspection, LiDAR ranging and 3D profiling, near-infrared imaging, optical sensing, industrial automation, non-destructive testing, and 3D scanning equipment. It is optimized to pair with 940nm LED and laser diode light sources, isolating target wavelengths to reduce ambient noise and enhance detection accuracy in demanding working environments.

Customization & Service

OPTOStokes maintains an extensive in-stock selection of standard bandpass filters to support fast sampling and short lead times. For project-specific requirements, we offer full customization covering substrate materials, overall dimensions, shapes (round, square, and custom irregular geometries), and mounting ring assembly options. All filters are manufactured to world-class precision standards and undergo rigorous spectral and environmental quality testing to guarantee consistent performance and reliable delivery schedules.

Support & Inquiry

Engineering and procurement teams often face sourcing challenges: long lead times for custom optics, limited technical guidance during filter selection, and inconsistent coating quality across production batches. At OPTOStokes, we address these pain points through our combination of ready-to-ship inventory, in-house optical engineering support, and flexible custom manufacturing capabilities. For custom specifications, volume pricing, or application-specific selection guidance, contact our technical sales team at sales@optofilters.com or submit an inquiry directly through our website for a prompt, detailed response.