FNG2550 - Absorptive Glass Neutral Density Filters
Description
Glass Neutral Density filters attenuate light by absorption just like the gelatine neutral density filters. Glass ND Filters are more robust and tend to have more uniform absorption characteristics. They also attenuate by absorption and so care must be taken to avoid overheating. Attenuation is achieved by polishing glass to the correct thickness.
Knight Optical offers stock absorptive ND filters in 12.5mm and 25mm diameters, and 50x50mm squares manufactured from high quality glass. Each filter is available with blocking between 0.1 and 4.0 OD and are available to purchase direct from this page.
In addition to our stock absorptive glass ND filters, Knight Optical also offers an extensive custom optic service thanks to our many years of experience in the industry. We are able to supply ND filters cut to sizes and shapes to fit individual application and mount filters where applicable.
FNG2550 - Absorptive Glass Neutral Density Filters
Specifications |
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|---|---|
| Attenuator Type: | Absorptive |
| Shape: | Square |
| Size: | 50 mm |
| Optical Density: | 2.5 |
Features
Mounting of diameters and squares.
Antireflective coatings can be applied to one or both faces for improved transmission.
Cutting down or edged to special shapes and sizes at short notice..
Available in sets, supplied in a wooden storage box for research and laboratory use.
Applications
Neutral density filters are used in applications such as spectroscopy, machine vision, ellipsometry and photography.
For pricing, technical or any other questions please contact the supplier
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- No markups, no fees
- Direct contact with supplier
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How to order?
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Ships from:
United Kingdom
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Sold by:
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On FindLight:
since 2016
Frequently Asked Questions
The features of Glass Neutral Density filters include mounting of diameters and squares, antireflective coatings can be applied to one or both faces for improved transmission, cutting down or edged to special shapes and sizes at short notice, and available in sets, supplied in a wooden storage box for research and laboratory use.
Gelatin ND filters are low cost but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types. Glass ND filters are the most common ND filter and attenuate light by absorption just like the gelatine neutral density filters.
The custom capabilities of Neutral Density filters include dimensions ranging from 5mm to 300mm+, thickness of Gelatine +/-0.05, Glass +/-0.2, and Metallic < 10(5), optical density ranging from 0.1 to 4.0, and mounting options of mounted or unmounted.
Glass Neutral Density filters are filters that attenuate light by absorption just like the gelatine neutral density filters.
Neutral density filters are used in applications such as spectroscopy, machine vision, ellipsometry, and photography.