Neutral density filters are used to attenuate the intensity of an incident light beam, even over a wider spectral range.
The neutral density filters available from Eureca are based on a correspondingly applied metal coating on glass substrates.
Such filters are used, for example
The filters are available in various standard sizes and some commonly used mounts. Other customized sizes and the delivery of the filters in plug-in or screw mounts are also possible. Please contact us if you need help.
Designation | Optical density | Thickness [mm] |
---|---|---|
ND-0.05-x | 0.05 | 0.7 |
ND-0.1-x | 0.1 | 0.3 |
ND-0.15-x | 0.15 | 0.7 |
ND-0.2-x | 0.2 | 0.3 |
ND-0.3-x | 0.3 | 0.3 |
ND-0.5-x | 0.5 | 0.3 |
ND-0.8-x | 0.8 | 0.3 |
ND-1.0-x | 1.0 | 0.3 |
ND-1.2-x | 1.2 | 0.3 |
ND-1.6-x | 1.6 | 0.3 |
ND-2.0-x | 2.0 | 0.3 |
ND-2.3-x | 2.3 | 0.3 |
ND-2.7-x | 2.7 | 0.3 |
ND-3.0-x | 3.0 | 0.3 |
When placing a request or order, please replace the »x« in the table above by the order code for the size needed:
Order code | Size or Mount | Clear aperture |
---|---|---|
15 | 15.0mm round | ≥ 12mm round |
25 | 25.0mm round | ≥ 22mm round |
50 | 50.0mm round | ≥ 49mm round |
50x50 | 50.0x50.0mm square | ≥ 49x49mm square |
C-Mount | C-Mount 25mm | ≥ 21mm round |
M25.5x0.5 | M25.5x0.5 | ≥ 21.9mm round |
M27.5x0.5 | M27.5x0.5 | ≥ 22.3mm round |
M30x0.5 | M30x0.5 | ≥ 26.5mm round |
M35.5x0.5 | M35.5x0.5 | ≥ 32.1mm round |
M37x0.5 | M37x0.5 | ≥ 33.2mm round |
M39x0.5 | M39x0.5 | ≥ 35.1mm round |
M40.5x0.5 | M40.5x0.5 | ≥ 36.2mm round |
M43x0.75 | M43x0.75 | ≥ 39.4mm round |
M46x0.75 | M46x0.75 | ≥ 42.3mm round |
M49x0.75 | M49x0.75 | ≥ 45.2mm round |
M52x0.75 | M52x0.75 | ≥ 48.0mm round |
Example: ND-0.05-25 is the correct order designation for the first filter of the table with a size of 25.0mm round.
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Last update: 2019-14-07