Products Description
BP900-30nm Bandpass Filter | 900nm CWL, 30nm FWHM, High OD Blocking

The BP900-30 is a precision NIR bandpass filter engineered for near-infrared optical systems requiring accurate wavelength selection and reliable out-of-band rejection. Fabricated with advanced thin-film coatings on high-quality optical substrates, this filter delivers over 90% transmission across the 895–905nm passband, paired with consistent optical density greater than 2 from 200nm to 1100nm. Designed for 0-degree angle of incidence, it is optimized for collimated light paths in industrial and scientific instrumentation, delivering stable spectral performance under normal operating conditions.
Technical Specifications
| Parameter | Specification |
|---|---|
| Center Wavelength (CWL) | 900nm ±3nm |
| Peak Transmission Range | 895 – 905nm, T > 90% |
| Full Width Half Maximum (FWHM) | 30nm ±3nm |
| Blocking Range & Performance | 200 – 1100nm, OD > 2 |
| Angle of Incidence (AOI) | 0 degrees |
Typical Applications
This 900nm bandpass filter is widely deployed across industrial and scientific optical systems where precise near-infrared wavelength isolation is critical. Common use cases include machine vision inspection, NIR imaging systems, industrial quality control setups, laser line purification, and analytical instrumentation for material characterization. Its stable passband performance also makes it suitable for integration into OEM optical assemblies and prototype development projects.
Customization & Service Support
OPTOStokes offers extensive customization options to match your specific system requirements. Available form factors include circular, square, and custom irregular shapes, with optional mounting rings for straightforward integration into optical assemblies. We maintain an extensive in-stock selection of standard NIR bandpass filters for fast delivery, while supporting full custom coating and dimension modifications with reliable lead times. All products are manufactured to world-class precision standards, with strict quality validation for every batch to ensure consistent spectral and mechanical performance.
Expert Support for Your Optical Projects
We understand that sourcing precision optical filters often comes with challenges: long lead times for custom parts, inconsistent batch quality, and limited technical support for complex integration requirements. At OPTOStokes, we combine in-stock availability for standard parts with flexible custom engineering capabilities, backed by a team of optical coating specialists to support your design and validation process.
For detailed datasheets, custom dimension requests, or bulk pricing information, contact our technical sales team at sales@optofilters.com or submit an inquiry directly through our website. We respond to all technical and commercial requests within one business day.
Tags: optical density thin-film coatings 900nm bandpass filter FWHM CWL NIR bandpass filter