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| Linear Variable Metallic Neutral Density Filters |
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Linear variable attenuator- Linear variable beamsplitter
- Visible to NIR
- Individual filters, or matched pairs to eliminate the density gradient over larger apertures
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Product Description
Product Detail
Specifications
Drawings
Catalog PDF
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Product Description
These ND filters provide linearly varying attenuation or beamsplitting in the visible and NIR region. Attenuation is achieved by a thin film of aluminum protected with an overcoat, and variable beamsplitting is an added benefit of the inherent reflectivity of aluminum. The BK 7 or UV fused silica substrates have a slight wedge between the faces to eliminate unwanted fringe patterns and cavity feedback, and the rear surface is also antireflection coated for the broadband visible range.
These ND filters provide linearly varying attenuation or beamsplitting in the visible and NIR region. Attenuation is achieved by a thin film of aluminum protected with an overcoat, and variable beamsplitting is an added benefit of the inherent reflectivity of aluminum. The BK 7 or UV fused silica substrates have a slight wedge between the faces to eliminate unwanted fringe patterns and cavity feedback, and the rear surface is also antireflection coated for the broadband visible range.
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Ordering Information | | Quantity | Model | Description | Price | | | Individual Filters | | | 31W00ML.1 | Linear Variable Metallic Neutral Density Filter, BK 7, 79.4 x 25.4mm, 0.08-2.0 OD, £2l | | | | 31Y02ML.1 | Linear Variable Metallic Neutral Density Filter, BK 7, 79.4 x 25.4mm, 0.08-2.0 OD, £2l | | | | Matched Filter Pairs | | | 31W00MP-ML.1 | Linear Variable Metallic Neutral Density Matched Filter Pair, UV Fused Silica, 79.4 x 25.4mm, 0.08-2.0 OD, £1l | | | | 31Y02MP-ML.1 | Linear Variable Metallic Neutral Density Matched Filter Pair, UV Fused Silica, 79.4 x 25.4mm, 0.08-2.0 OD, £1l | |
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925B Compensated Attenuators include a matched pair of these filters, providing high resolution intensity control without introducing a gradient in the intensity distribution (see Compensated Attenuators).
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