SCHOTT NG Gray Glass Neutral Density (ND) Filters feature nearly constant transmittance in the visible spectrum, attenuating light through absorption. The filters are available in 6 materials, each with a thickness of 1, 2, or 3mm. Filters can be stacked to achieve custom optical densities. SCHOTT NG Gray Glass Neutral Density (ND) Filters are used in a variety of machine vision, factory automation, and analytical instrumentation applications. Custom sizes from 5 to 160mm are available upon request; for more information, visit our Colored Glass Filter Manufacturing capabilities webpage. SCHOTT NG Absorptive Neutral Density (ND) Filters with precision optical density and transmission values are also available.
While SCHOTT NG Gray Glass Neutral Density (ND) Filters will provide consistent transmission values from 400 - 700nm, variations in filter lot manufacturing may lead to variations in transmission from filter to filter. Please see the table in the Technical Information tab for acceptable transmission variations for each glass type and thickness.
Click here to download SCHOTT’s colored glass filter calculation program which can be used to calculate the internal transmittance and external transmission of each SCHOTT glass type. The program can simulate the performance of individual filters with user specified thickness or of stacked filters with varying glass types and thicknesses.
If you have a need for any round, square, or rectangular size of a SCHOTT NG Gray Glass Neutral Density (ND) Filter in dimensions between 5mm and 50mm, please visit our Colored Filter Glass Tool. We’ll provide an immediate quote, and can deliver the part to your requested size in approximately 2 weeks. A full list of standard manufacturing tolerances and restrictions are listed. For fully customized filters to your requirements, visit our Customized Optical Filter Glass Capabilities page.
Glass Type | Thickness | Min. Transmission (%) | Max. Transmission (%) |
NG3 | 1 | 7.4 | 11.1 |
2 | 0.01 | 2.8 | |
3 | 0.01 | 1.9 | |
NG4 | 1 | 24.9 | 31.3 |
2 | 6.1 | 11.6 | |
3 | 0.01 | 5.5 | |
NG5 | 1 | 49.8 | 55.4 |
2 | 27.2 | 32.8 | |
3 | 14.3 | 19.9 | |
NG9 | 1 | 1.8 | 5.5 |
2 | 0.01 | 2.0 | |
3 | 0.01 | 1.8 | |
NG11 | 1 | 70.1 | 73.8 |
2 | 54.2 | 57.9 | |
3 | 42.2 | 45.9 |
Title | Type | Compare | Stock Number | Price | Buy | |
---|---|---|---|---|---|---|
![]() |
25.0mm Optic Dia., Optic Mount | Fixed | #64-560 |
€44,00
Qty 10+ €39,60 Request Quote |
|
|
![]() |
5.0 - 25.0mm Optic Height, Metric Bar-Type Optic Holder | Fixed | #55-529 |
€93,00
Qty 10+ €83,70 Request Quote |
|
|
![]() |
7.0 - 40.0 Optic Height, English Bar-Type Optic Holder | Fixed | #03-676 |
€95,00
Qty 10+ €85,50 Request Quote |
|
|
![]() |
10.0 - 60.0mm Optic Height, Metric Bar-Type Optic Holder | Fixed | #55-530 |
€101,00
Qty 10+ €90,90 Request Quote |
|
|
![]() |
7.0 - 67.0 Optic Height, English Bar-Type Optic Holder | Fixed | #03-669 |
€103,00
Qty 10+ €92,70 Request Quote |
|
|
![]() |
8.0 - 118.0 Optic Height, English Bar-Type Optic Holder | Fixed | #03-666 |
€107,00
Qty 10+ €96,30 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Dia., Optical Cell Assembly | Fixed | #36-461 |
€112,00
Qty 10+ €99,30 Request Quote |
|
|
![]() |
4.0 - 36.0mm Optic Dia., Self-Centering Jaw Clamp | Fixed | #16-077 |
€141,00
Qty 5+ €124,10 Request Quote |
|
|
![]() |
2"/50.8mm Diameter, Bar Type Lens / Filter Holder, Quick Start Optical Mounts | Fixed | #17-530 | €143,70 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Dia., X-Y Translating Optic Mount | Adjustable - Linear (XY) | #62-956 |
€253,00
Qty 5+ €240,40 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Diameter, X-Y Translating Quick Start Optical Mounts | Adjustable - Linear (XY) | #17-513 | €294,60 Request Quote |
|
|
![]() |
5.0 - 100.0mm Optic Dia., Self-Centering Jaw Clamp | Fixed | #16-078 |
€367,00
Qty 5+ €323,70 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Dia., Precision Gimbal Mount | Adjustable - Gimbal | #54-999 |
€422,00
Qty 5+ €375,60 Request Quote |
|
|
![]() |
25/25.4mm ID, Precision Gimbal Mount, Quick Start Optical Mounts | Adjustable - Gimbal | #17-517 | €473,10 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Dia., X-Y-Z Translating Optic Mount | Adjustable - Linear (XYZ) | #62-959 |
€496,00
Qty 5+ €446,40 Request Quote |
|
|
![]() |
25.0/25.4mm Optic Dia., 5 Axes Optical Mount | Adjustable - Linear (XYZ) & Tip-Tilt | #13-776 |
€691,00
Qty 5+ €656,60 Request Quote |
|
or view regional numbers
QUOTE TOOL
enter stock numbers to begin
Copyright 2021 | Edmund Optics, Ltd Unit 1, Opus Avenue, Nether Poppleton, York, YO26 6BL, UK
Edmund Optics GmbH Germany acts as an agent for Edmund Optics Ltd. UK. The contract partner is Edmund Optics Ltd. UK.