BP660nm Bandpass Filter | CWL 660nm±3nm, FWHM 35±3nm, 0.5mm Thickness
The OPTOStokes BP660nm is a high-precision bandpass filter optimized for red light spectral applications, specifically targeting the chlorophyll absorption valley wavelength which is highly sensitive to vegetation density. Engineered with advanced thin film coating technology, it provides transmission greater than 90 percent across the 655–665nm range, with a center wavelength of 660nm ±3nm and a full width at half maximum of 35±3nm. This ultra-thin 0.5mm filter delivers exceptional high OD blocking across 350–1100nm, ensuring clean signal isolation for agricultural and environmental monitoring systems.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Name | 660nm-35nm |
| Part Number | 40442802 |
| Center Wavelength (CWL) | 660nm ±3nm |
| Transmission Band | 655–665nm, transmission greater than 90 percent |
| Full Width at Half Maximum (FWHM) | 35±3nm |
| Blocking Range & Optical Density | 350–1100nm, optical density greater than 3 |
| Substrate Thickness | 0.5mm |
| Surface Quality | 60/40 |
Applications
This high transmission red bandpass filter is specifically designed for applications requiring precise spectral selection at 660nm, which corresponds to the chlorophyll absorption valley and provides critical data on vegetation density and health. Its exceptional performance makes it ideal for:
Vegetation density measurement and crop growth assessment
Chlorophyll content analysis and plant stress detection
Precision agriculture and remote sensing systems
Environmental monitoring and ecosystem health evaluation
Industrial machine vision and quality inspection
Analytical instruments and spectroscopic analysis
Customization & Service
OPTOStokes offers comprehensive custom optical filter solutions to meet your exact system requirements. We manufacture 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% optical testing before shipment.
Pain Points & CTA
Technical teams often face critical challenges: long lead times for custom optical components, inconsistent spectral performance, and lack of specialized technical support. These issues can delay project milestones and increase operational costs. At OPTOStokes, we solve these problems with our extensive ready-to-ship inventory, flexible manufacturing capabilities, 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 [email protected] or submit an inquiry through our website today.
