Products Description
BP525 Bandpass Filter | CWL 525nm, FWHM 55nm, AOI 0°

The OPTOStokes BP525 is a high-performance bandpass filter designed for precision optical systems operating in the green visible spectrum. Featuring a center wavelength (CWL) of 525nm ±5nm and a full width at half maximum (FWHM) of 55nm ±5nm, this bandpass filter delivers high in-band transmittance exceeding 90% across the 500nm to 540nm range while maintaining robust out-of-band rejection. Built with durable hard optical coatings, it provides consistent spectral stability and long-term reliability for demanding industrial and research environments.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Model | BP525 |
| Center Wavelength (CWL) | 525nm ±5nm |
| Full Width at Half Max (FWHM) | 55nm ±5nm |
| Passband Transmission | T > 90% @ 500-540nm |
| Out-of-Band Blocking | OD > 2 @ 350-1100nm |
| Angle of Incidence (AOI) | 0° |
Primary Applications
Engineered for high-throughput optical measurement and imaging setups, the BP525 excels in applications requiring precise spectral isolation in the green light band:
Agricultural Product Sorting: Enhances contrast in multispectral sorting systems for chlorophyll evaluation, quality grading, and defect inspection in fruits, vegetables, and grains.
Fluorescence Imaging & Bio-analysis: Provides clean spectral separation for green fluorescence emitters and diagnostic instrumentation.
Colorimetric & Machine Vision Systems: Optimizes target detection in industrial inspection systems operating under specific green illumination.
Customization & Engineering Support
At OPTOStokes, we support both rapid prototyping and OEM volume production. Beyond standard off-the-shelf catalog optics, we provide complete engineering assistance and tailored manufacturing options to meet your exact system requirements:
Custom Geometry: Circular discs, square plates, and custom cut shapes to fit proprietary optical assemblies.
Mounted Options: Available with standard aluminum threaded rings or custom metal housings for ease of integration.
Extensive Inventory & Fast Delivery: A broad selection of ready-to-ship standard optics backed by controlled lead times for custom runs.
Technical Inquiries & Ordering
Selecting the right optical filter with optimal out-of-band suppression and clear spectral aperture is critical for reducing stray light and maximizing measurement accuracy. Whether you require immediate stock availability or a custom optical filter design tailored to your mechanical envelope, our engineering team is ready to review your optical specifications.
Contact our technical sales team at sales@optofilters.com or submit an inquiry through our site to receive customized quotes, spectral data curves, or application guidance.
Tags: optical filter custom optical filter 525nm bandpass filter optical filter for sorting BP525