40% Neutral Density Filter | OPTOStokes
Technical Specifications
| Parameter | Description |
|---|---|
| Transmission | 350-1100nm @ T=40%±5% |
| Thickness | 1.0mm (other thicknesses in stock) |
| Surface Quality | 60/40 scratch-dig |
About This Filter
Our 40% neutral density filter provides controlled light attenuation across 350-1100nm, reducing intensity by 60% while maintaining spectral neutrality. With 40%±5% transmission, it preserves color integrity—ideal for applications needing balanced light reduction without distortion.
Key Advantages
- Uniform 40%±5% transmission across 350-1100nm for consistent light control
- Spectrally neutral design maintains color accuracy in imaging and measurement
- 1.0mm thickness balances durability with system integration flexibility
- 60/40 surface quality minimizes scattering, ensuring clean beam profiles
Applications
- Imaging Systems: Reduces harsh light in high-brightness environments (e.g., outdoor photography) while retaining natural color
- Laser Testing: Moderates 350-1100nm laser intensity for component validation without altering beam characteristics
- Spectroscopy: Optimizes light levels to match detector sensitivity, enhancing signal-to-noise ratios in analysis
Stock & Custom Options
1.0mm thickness and standard sizes are in stock for immediate delivery. Need specific dimensions? Choose circular, square, or custom shapes—with optional lens mounts for seamless system integration.
Why OPTOStokes?
Our filters meet international optical standards, with ready inventory for urgent needs. Custom specifications? Our team delivers precise, on-time results. Trusted quality for 40% attenuation applications.
Contact Us
Need reliable 40% light reduction? Email sales@optofilters.com or message us—we’ll find your perfect fit.
