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Neutral Density Filters
![](/out/Graphics/en/00069641_0.jpg)
LINOS's reflective neutral density filters enable optical attenuation over an extremely broadband wavelength range from 400 nm to 2000 nm. The spectral distribution of the light remains unchanged. The optical density D ranges from 0.3 to 3.0 (transmission of 50% to 0.1%).
The filters are made of 2 mm thick borosilicate glass with metal layers vapor-deposited on one side and are available in the sizes Ø1/2", Ø22.4 mm and Ø50 mm. The Ø1/2" and Ø22.4 mm versions are also available with Ø16 mm and Ø25 mm mounts.
Incident radiant power Φ0
Transmitted radiant power ΦT
Transmittance τ = ΦT / Φ0
Optical density D = log10(1 / τ)
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- Specified wavelength range: 400 nm - 2000 nm
- Metallic films vacuum-evaporated onto borosilicate glass substrates
- Hard and durable
- Firmly adhering
- Mounted and unmounted versions available
- Mounted types fit to LINOS Microbench or LINOS Nanobench
- Thickness of all filters: 2 mm
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- Custom items (different materials, dimensions, or optical densities) available for higher quantities upon request.
![Neutral Density Filters](/out/Graphics/en/00132112_0.jpg)
Unmounted neutral density filters in sizes of Ø1/2", Ø22,4 mm and Ø50 mm.
![Neutral Density Filters](/out/Graphics/en/00124366_0.jpg)
Neutral Filter; T=5%; D=22.4; mounted (G063463000)
![Neutral Density Filters](/out/Graphics/en/00131989_0.jpg)
Technical drawing of mounted filters with 22.4 mm diameter.
![Neutral Density Filters](/out/Graphics/en/00132078_0.jpg)
Neutral Filter; T=5%; D=12.7; mounted (G052504000)
![Neutral Density Filters](/out/Graphics/en/00132000_0.jpg)
Technical drawing of mounted filters with 12.7 mm diameter.
![Neutral Density Filters](/out/Graphics/en/00132089_0.jpg)
Typical transmittance curves of LINOS's reflective neutral density filters.
![Neutral Density Filters](/out/Graphics/en/00126821_0.jpg)
Application example: By installing a mounted neutral density filter inside a Mounting Plate 25, Lachable, 10°, the reflected part of the beam is deflected sideways and finally blocked by a laterally mounted Mounting Plate Without Hole. A reflex back to the laser is thereby prevented.
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Neutral Density Filters
Part No. | Optic Size (mm) | Mount | Optic Center Thickness (mm) | Parallelism | Clear aperture (mm) | Design Wavelength (nm) | Transmission (%) | τ | Optical density | Tolerance optical density | Weight (kg) | Packaging | Length (mm) | Mounting Outer Diameter (mm) |
G371190000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 50 | 0.5 | 0.3 | ±0.03 | 0.001 | Paper | ||
G371198000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 40 | 0.4 | 0.4 | ±0.04 | 0.001 | Paper | ||
G371191000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 20 | 0.2 | 0.7 | ±0.07 | 0.001 | Paper | ||
G371192000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 10 | 0.1 | 1.0 | ±0.1 | 0.001 | Paper | ||
G371193000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 5 | 0.05 | 1.3 | ±0.1 | 0.001 | Paper | ||
G371194000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 2 | 0.02 | 1.7 | ±0.2 | 0.001 | Paper | ||
G371195000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 1 | 0.01 | 2.0 | ±0.2 | 0.001 | Paper | ||
G371196000 | Ø12.7 | - | 2 | 1' | 11 | 400-2000 | 0.1 | 0.001 | 3.0 | ±0.5 | 0.001 | Paper | ||
G371140000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 50 | 0.5 | 0.3 | ±0.03 | 0.002 | Paper | ||
G371148000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 40 | 0.4 | 0.4 | ±0.04 | 0.002 | Paper | ||
G371141000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 20 | 0.2 | 0.7 | ±0.07 | 0.002 | Paper | ||
G371142000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 10 | 0.1 | 1.0 | ±0.1 | 0.002 | Paper | ||
G371143000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 5 | 0.05 | 1.3 | ±0.1 | 0.002 | Paper | ||
G371144000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 2 | 0.02 | 1.7 | ±0.2 | 0.002 | Paper | ||
G371145000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 1 | 0.01 | 2.0 | ±0.2 | 0.002 | Paper | ||
G371146000 | Ø22.4 | - | 2 | 1' | 20 | 400-2000 | 0.1 | 0.001 | 3.0 | ±0.5 | 0.002 | Paper | ||
G371150000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 50 | 0.5 | 0.3 | ±0.03 | 0.01 | Paper | ||
G371158000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 40 | 0.4 | 0.4 | ±0.04 | 0.01 | Paper | ||
G371151000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 20 | 0.2 | 0.7 | ±0.07 | 0.01 | Paper | ||
G371152000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 10 | 0.1 | 1.0 | ±0.1 | 0.01 | Paper | ||
G371153000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 5 | 0.05 | 1.3 | ±0.1 | 0.01 | Paper | ||
G371154000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 2 | 0.02 | 1.7 | ±0.2 | 0.01 | Paper | ||
G371155000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 1 | 0.01 | 2.0 | ±0.2 | 0.01 | Paper | ||
G371156000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 0.1 | 0.001 | 3.0 | ±0.5 | 0.01 | Paper | ||
G371157000 | Ø50 | - | 2 | 1' | 48 | 400-2000 | 0.1 - 50 | 0.3 - 3 | 0.07 | Paper | ||||
G052501000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 50 | 0.5 | 0.3 | ±0.03 | 0.003 | Box | 8 | 16 |
G052509000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 40 | 0.4 | 0.4 | ±0.04 | 0.003 | Box | 8 | 16 |
G052502000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 20 | 0.2 | 0.7 | ±0.07 | 0.003 | Box | 8 | 16 |
G052503000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 10 | 0.1 | 1.0 | ±0.1 | 0.003 | Box | 8 | 16 |
G052504000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 5 | 0.05 | 1.3 | ±0.1 | 0.003 | Box | 8 | 16 |
G052505000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 2 | 0.02 | 1.7 | ±0.2 | 0.003 | Box | 8 | 16 |
G052506000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 1 | 0.01 | 2.0 | ±0.2 | 0.003 | Box | 8 | 16 |
G052507000 | Ø12.7 | n | 2 | 1' | 11 | 400-2000 | 0.1 | 0.001 | 3.0 | ±0.5 | 0.003 | Box | 8 | 16 |
G063460000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 50 | 0.5 | 0.3 | ±0.03 | 0.005 | Box | 10 | 25 |
G063468000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 40 | 0.4 | 0.4 | ±0.04 | 0.005 | Box | 10 | 25 |
G063461000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 20 | 0.2 | 0.7 | ±0.07 | 0.005 | Box | 10 | 25 |
G063462000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 10 | 0.1 | 1.0 | ±0.1 | 0.005 | Box | 10 | 25 |
G063463000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 5 | 0.05 | 1.3 | ±0.1 | 0.005 | Box | 10 | 25 |
G063464000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 2 | 0.02 | 1.7 | ±0.2 | 0.005 | Box | 10 | 25 |
G063465000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 1 | 0.01 | 2.0 | ±0.2 | 0.005 | Box | 10 | 25 |
G063466000 | Ø22.4 | m | 2 | 1' | 20 | 400-2000 | 0.1 | 0.001 | 3.0 | ±0.5 | 0.005 | Box | 10 | 25 |