BP985nm Narrowband Bandpass Filter | 20nm FWHM, OD3+ Blocking

The OPTOStokes BP985nm narrowband bandpass filter is a precision near-infrared optical component engineered for accurate wavelength isolation in demanding detection and imaging systems. With a center wavelength of 985nm and a 20nm full width at half maximum bandwidth, it achieves transmission greater than 90% across the 980nm to 990nm spectral range, paired with reliable broadband blocking from 350nm to 1100nm at optical density greater than 3. Calibrated for normal incidence at 0 degrees, this filter delivers consistent spectral performance for both research and industrial integration. As part of our extensive in-stock bandpass filters portfolio, it combines world-class manufacturing precision with dependable lead times to support prototype development and volume production alike.

Technical Specifications

Primary Applications

This 985nm narrowband filter is optimized for agricultural multispectral remote sensing and vegetation health monitoring systems, where precise near-infrared wavelength selection is critical for accurate spectral analysis of crop growth and stress conditions. It is also widely deployed in multispectral imaging equipment, environmental monitoring platforms, spectral analysis instruments, and industrial optical detection setups. Its stable spectral response ensures reliable data capture in both field-deployed and laboratory-based optical systems.

Customization & Service Support

OPTOStokes provides comprehensive customization options to match your specific system integration requirements. Available form factors include circular, square, and custom irregular shapes, with optional mounting rings for seamless assembly into optical housings. All filters are fabricated using precision thin film coating technology to ensure consistent batch-to-batch spectral performance. We maintain a large in-stock inventory of standard NIR filters for fast turnaround, and our in-house engineering team supports fully custom spectral designs with reliable, transparent lead times and guaranteed quality compliance. Every unit undergoes rigorous spectral testing before shipment to verify adherence to stated specifications.

Expert Support & Inquiry

For engineering and procurement teams working on multispectral remote sensing projects, sourcing narrowband optical filters with consistent spectral performance and predictable delivery can introduce significant project risks. Extended lead times for custom designs, inconsistent coating quality, and limited technical support can delay development timelines and increase integration costs. At OPTOStokes, we address these challenges directly through our combination of world-class manufacturing precision, extensive ready-to-ship inventory, and dedicated technical support. Whether you require standard off-the-shelf units or fully custom spectral designs tailored to your agricultural or industrial application, our team delivers clear communication and dependable execution for every order.

To discuss your specific project requirements, request a detailed datasheet, or receive a formal quote, contact our optical specialists at sales@optofilters.com or submit an inquiry through our website. We provide responsive technical support and custom solution design to support your work from initial prototype through full-scale production.