Visible & Near Infrared Neutral Density Filters (ND)

- Reflective Metallic Films on glass
- Densities from 0.04 to 4.00
- Optical Density = log (1 / T)
Reflective metallic thin films deposited on glass permit attenuation of an optical system with negligible absorption. They reflect part of the incident radiation permitting only a fraction to be transmitted. A filter set of 11 different OD’s of the same size is also available. Each filter will be provided a transmission scan at 546nm.
Material: |
Schott B270 or equivalent |
Thickness: |
1.5 mm to 3.0 mm |
Size Tolerance: |
<+ 0.00 / – 0.30 mm |
Surface Quality: |
<60/40 |
Optical Density: |
nominal @ 546 nm |
Clear Aperture: |
> 85% of central circular dimension |
Visible & Near Infrared Neutral Density Filters (ND)