Absorptive Neutral Density Filters (NDA)
Neutral glasses
- Densities from 0.04 to 5.00
- Optical Density = log (1 / T)
Neutral density glasses are a convenient way of introducing attenuation into an optical system. They absorb part of the incident radiation permitting only a fraction to be transmitted. A filter set of a different OD’s of the same size is also available.
Each filter will be provided a transmission scan at 546nm.
Material: |
Schott glass or equivalent |
Thickness: |
0.5 mm to 3 mm |
Dimension
Tolerance: |
<+ 0.00 / – 0.30 mm |
Surface Quality: |
<60/40 |
Optical Density: |
nominal @ 546 nm |
Clear Aperture: |
> 85% of central circular dimension |
Absorptive Neutral Density Filters (NDA)