670nm Longpass Filter
The 670nm longpass filter is designed to deliver reliable optical performance for professional systems, with parameters optimized to meet strict application demands. Its ability to separate wavelengths precisely makes it a valuable component in various setups.
Key Performance
This filter stands out for its sharp wavelength separation. It achieves over 90% transmission from 680nm to 1100nm, ensuring efficient passage of longer wavelengths. Meanwhile, it blocks 350nm to 650nm wavelengths with less than 1% transmission, minimizing interference from shorter wavelengths. The 50% transmission point (CWL) is tightly controlled at 670nm±5nm, ensuring consistent cutoff performance.
With a standard thickness of 1.0mm (other thicknesses available in stock) and a 60/40 surface finish, it reduces light scattering and maintains optical clarity—critical for maintaining signal integrity in high-precision systems.
Application Cases
- Infrared Imaging Systems: By blocking visible light (350-650nm) and transmitting near-infrared (680-1100nm), it enhances image contrast in thermal imaging cameras, making it ideal for industrial inspection and security surveillance.
- Spectroscopy: In material analysis, it isolates the near-infrared spectrum, ensuring accurate measurements by eliminating visible light interference that could skew results.
- Laser Systems: Protects sensitive detectors in 808nm or 980nm laser setups by blocking stray visible light, improving system stability and measurement accuracy.
Customization & Availability
Beyond standard options, we offer tailored solutions to fit your equipment:
- Sizes & Shapes: Available in square, round, or irregular shapes, with custom dimensions to match your housing requirements.
- Mounting: Can be pre-fitted into lens rings for easy integration into your optical assemblies.
OPTOStokes maintains a large inventory of 670nm longpass filters for quick shipment. For custom needs, our production lines ensure international-quality standards, with controlled lead times and consistent performance.
Addressing Your Needs
Struggling with filters that fail to block stray light or lack consistent transmission? Our 670nm longpass filter delivers reliable blocking and transmission, backed by rigorous quality checks. Whether you need a standard size from stock or a custom design, we’re here to help.
Reach out at sales@optofilters.com or leave a message on our site to discuss your requirements—our team will respond promptly with tailored solutions.
