NEUTRAL DENSITY FILTERS
MIDOPT ND PART NUMBERS
MidOpt Neutral Density Filters (ND) are defined according to their optical density (OD). For example, ND060 is an ND Filter with an OD of 0.60. The higher the OD, the lower the transmission, as seen in the table below.
MidOpt Neutral Density Filters (ND) are defined according to their optical density (OD). For example, ND060 is an ND Filter with an OD of 0.60. The higher the OD, the lower the transmission, as seen in the table below.
TRANSMISSION CURVES
ND030
Useful Range: 425-675nm Optical Density: 0.3 Transmission: 50% Tolerance: +/- 5.00% Surface Quality: 40/20 MORE INFO › |
ND060
Useful Range: 425-675nm Optical Density: 0.6 Transmission: 25% Tolerance: +/- 3.00% Surface Quality: 40/20 MORE INFO › |
ND090
Useful Range: 425-675nm Optical Density: 0.9 Transmission: 12.50% Tolerance: +/- 1.50% Surface Quality: 40/20 MORE INFO › |
ND120
Useful Range: 425-675nm Optical Density: 1.2 Transmission: 6.25% Tolerance: +/- 0.63% Surface Quality: 40/20 MORE INFO › |
ND200
Useful Range: 425-675nm Optical Density: 2.0 Transmission: 1% Tolerance: +/- 0.15% Surface Quality: 40/20 MORE INFO › |
ND300
Useful Range: 425-675nm Optical Density: 3.0 Transmission: 0.10% Tolerance: +/-0.015% Surface Quality: 40/20 MORE INFO › |
ND400
Useful Range: 425-675nm
Optical Density: 4.0
Transmission: 0.01%
Tolerance: +/- 0.003%
Surface Quality: 40/20
MORE INFO ›
Useful Range: 425-675nm
Optical Density: 4.0
Transmission: 0.01%
Tolerance: +/- 0.003%
Surface Quality: 40/20
MORE INFO ›
ND FILTER STACKING
MidOpt ND Filters have male and female threading, so they can easily be stacked to test various optical densities. For example, an ND030 Filter, which has an OD of 0.3, mounted together with an ND120 Filter, which has an OD of 1.2, will result in an ND150 Filter, which has an OD of 1.5, as seen in the image below.
MidOpt ND Filters have male and female threading, so they can easily be stacked to test various optical densities. For example, an ND030 Filter, which has an OD of 0.3, mounted together with an ND120 Filter, which has an OD of 1.2, will result in an ND150 Filter, which has an OD of 1.5, as seen in the image below.
Note: For applications that require light reduction evenly across the visible and near-infrared (NIR) spectrum, view our full line of low-reflectivity Ni Filters.