Product Overview
Ultraviolet light can degrade image quality, interfere with measurements, or damage sensitive optical components. The 400nm longpass filter from OPTOStokes addresses these challenges by effectively blocking UV wavelengths while allowing visible and near-infrared light to pass with exceptional clarity.
Key features of our 400nm longpass filter include:
- High Transmission: >90% transmission across 400-1100nm
- Superior UV Blocking: <1% transmission in 200-370nm range
- Standard Thickness: 1.0mm (other thicknesses available)
- Surface Quality: 60/40 scratch-dig
- Customizable Sizes & Shapes: Available in round, square, or custom shapes
Manufactured with advanced dielectric coatings, this filter offers a sharp cutoff at 400nm, ensuring reliable performance in the transmission band. Whether you need to enhance image quality, improve measurement accuracy, or protect optical systems, this filter is a dependable choice.
Applications
This filter excels in a variety of demanding applications:
- Photography: Blocks UV light to reduce haze and improve color fidelity.
- Scientific Instrumentation:
- Spectroscopy: Selects specific wavelength ranges for precise measurements.
- Fluorescence Microscopy: Filters excitation light while passing fluorescence signals.
- Raman Spectroscopy: Suppresses laser lines to detect Raman scattering.
- Laser Systems: Eliminates unwanted wavelengths to safeguard equipment.
- Optical Sensors: Enhances signal-to-noise ratio by blocking UV interference.
Technical Specifications
| Parameter | Description |
|---|---|
| Cutoff Wavelength | 400nm |
| Transmission | >90% in 400-1100nm; <1% in 200-370nm |
| Thickness | 1.0mm (standard), other options available |
| Surface Quality | 60/40 scratch-dig |
| Material | Optical glass with dielectric coating |
| Sizes | Customizable; standard sizes include 25mm diameter, 50mm x 50mm |
| Mounting Options | Unmounted or mounted in lens rings |
Customization Options
We tailor our filters to meet your exact needs:
- Sizes & Shapes: Round, square, rectangular, or custom configurations
- Thickness: Multiple thickness options to suit your application
- Coatings: Custom coating designs for specific wavelength ranges or performance
- Mounting: Filters can be mounted in standard or custom lens rings for easy integration
Our engineering team is ready to collaborate with you to deliver the perfect solution.
Why Choose OPTOStokes?
- Extensive Inventory: Wide range of standard filters available for immediate shipment
- Customization Expertise: Precision manufacturing to your exact specifications
- Quality Assurance: Rigorous quality control for consistent performance
- Competitive Pricing: High-quality filters at affordable prices
- Dedicated Support: Expert team to guide you through selection and customization
With OPTOStokes, you get reliable, high-performance optical filters tailored to your needs.
Take the Next Step
Ready to enhance your optical system with our 400nm longpass filter? Reach out to our sales team at sales@optofilters.com or submit an inquiry through our website. We’re here to help you find the ideal optical solution.
