BP920nm NIR Bandpass Filter | CWL 920nm, FWHM 50nm, OD6 Blocking

The BP920nm is a precision narrowband near-infrared bandpass filters designed for high-performance spectral control in demanding optical systems. With a center wavelength of 920 ±5 nm and a tight 50 ±5 nm passband spanning 910 nm to 930 nm, it delivers transmission greater than 90% across the target band while providing extremely deep out-of-band rejection. Its blocking performance reaches an average optical density greater than 6 (minimum optical density greater than 5) across 200 nm to 880 nm and 960 nm to 1600 nm, effectively suppressing unwanted background and stray light. Fabricated with durable hard dielectric thin-film coatings on high-quality optical substrates, this filter maintains stable spectral performance under varying environmental conditions, making it suitable for both OEM integration and R&D prototyping.

Technical Specifications

Applications

This 920nm narrowband filter is optimized for near-infrared spectral detection and precision optical measurement scenarios. It is widely integrated into analytical instruments for quantitative spectral analysis, material identification, and component concentration detection. Additional common applications include laser line purification, industrial inspection systems, biomedical imaging setups, and optical sensing devices that require strict wavelength selectivity. Its high transmission and deep blocking characteristics significantly improve system signal-to-noise ratio and detection sensitivity, enabling more accurate and reliable measurement results.

Customization & Service

OPTOStokes maintains an extensive in-stock selection of standard NIR filters including the BP920nm series, supporting fast delivery for prototype validation and volume production needs. We also provide full customization services to meet unique project requirements: available form factors include circular, square, and custom irregular shapes, with optional metal mounting rings for secure and convenient system integration. All products are manufactured to world-class precision standards, with reliable lead times and rigorous multi-stage quality inspection to ensure consistent spectral performance and long-term durability across every production batch.

Project Support & Inquiry

Engineering and procurement teams often face challenges such as extended lead times, limited customization flexibility, and insufficient technical support when sourcing high-precision optical components. At OPTOStokes, we combine deep in-stock inventory, decades of optical coating expertise, and flexible custom manufacturing capabilities to resolve these bottlenecks. Whether you require standard off-the-shelf filters, modified spectral specifications, or fully custom optical designs, our technical team is ready to provide targeted support. Contact us at sales@optofilters.com or submit an inquiry through our website to receive a tailored solution and formal quotation promptly.