Gelatine neutral density filters
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Neutral density filters attenuate light by a constant amount that is, to first order, independent of the wavelength. Gelatin ND filters are the cheapest but tend to have more fluctuation with wavelength and a narrower wavelength range than glass ND filters and metallic types. Gelatine neutral density filters work by absorption so care must be taken to avoid overheating which can lead to damage to the filter. Gelatine ND filters can also be cut easily to bespoke custom sizes in your own laboratory which can be extremely useful.
Wratten neutral density gelatin filters are now being replaced by Wratten 2 type filters which are manufactured using a ridged polymer. Wratten 2 filters are more robust and unaffected by water and moisture as gelatine type.
|Dimensions:||50 x 50 x 0.1mm|
(Measured in diffused light to ANSI PH2.19 1959)
Neutrel density filters
Absorptive glass neutrel density filters
Mounted absorptive glass neutrel density filters
Metallic neutrel density filters
Mounted metallic neutrel density filters
Neutrel density filter sets
- Large 300x100mm sheets available that can be cut to smaller shapes and sizes.
- Stock sheets can be cut with a razor or CNC machined to unusual shapes.
- Coating options from antireflective to anti-scratch.
- Mounting options.
Filter set pdf showing gelatin neutral density filters from 0.2-0.5 OD
Filter set pdf showing gelatin neutral density filters from 0.6-0.9 OD
Filter set pdf showing gelatin neutral density filters from 1.0-4.0 OD
|Part No.||Density @ 546nm||Trans (%) @ 546nm||Length|