BP450 & BP850 Dual Bandpass Filter | CWL 450/850nm, OD3 Blocking, 1.5mm

The OPTOStokes BP450 & BP850 is a high-precision dual bandpass filters optimized for multispectral machine vision imaging systems. Engineered with advanced ion-assisted thin film coating technology, it provides transmission greater than 90 percent across both 430–470nm and 830–870nm spectral bands, with center wavelengths of 450nm and 850nm each within ±5nm tolerance. This 1.5mm thick filter delivers consistent high OD blocking across three out-of-band regions with average optical density greater than 3, eliminating cross-channel interference for sharp, reliable machine vision performance at 0 degree angle of incidence.

Technical Specifications

Applications

This dual-band bandpass filter is specifically engineered for multispectral machine vision systems that require simultaneous imaging at two discrete wavelengths. Its balanced transmission and deep inter-band rejection make it ideal for:

• Multispectral machine vision and industrial imaging systems

• Surface defect inspection and material classification

• Food and agricultural product quality sorting

• Multi-channel optical sensing and measurement devices

• Automated production line quality control

• Hyperspectral imaging and spectral analysis equipment

Customization & Service

OPTOStokes offers comprehensive custom optical filter solutions to meet your exact multispectral imaging requirements. We manufacture dual bandpass filters in standard circular, square and custom irregular shapes, with optional precision mounting rings for seamless integration into your optical assemblies. Our extensive in-stock inventory ensures fast shipping for standard specifications, while our advanced manufacturing capabilities deliver custom orders with reliable, predictable lead times. All products are manufactured to world-class quality standards and undergo rigorous 100 percent optical testing before shipment.

Pain Points & CTA

Multispectral vision teams often face critical challenges: insufficient inter-band blocking causing channel crosstalk, inconsistent wavelength accuracy across production batches, and long lead times for custom dual-band components. These issues can reduce imaging contrast, increase measurement error, and delay system deployment. At OPTOStokes, we solve these problems with our extensive ready-to-ship inventory, precision thin-film coating technology, and dedicated technical support team. Whether you need a single prototype for testing or high-volume production runs, we deliver precision optical components on time, every time.

For detailed datasheets, volume pricing, or to discuss your specific filter requirements, contact our expert team at sales@optofilters.com or submit an inquiry through our website today.