050FN46-25 25mm Dia. Fused Silica Standard UV Neutral Density Filter, OD=0.5

The 050FN46-25 is a 25mm diameter Neutral Density Filter, designed for use in the ultraviolet (UV) range of the spectrum. This filter is manufactured by Andover Corporation, a leading vendor in the field of optical components. The item is currently in stock and available for purchase through the vendor's website, as indicated by the "weblink status" parameter.

This filter is made from fused silica, a high-purity glass with excellent optical properties. The material is identified as "fused sil mal-1965" in the item data, indicating its specific type and properties. The filter has a base shape of a circle, a standard geometry for many optical components due to its symmetry and ease of use in various applications.

The filter's geometry includes a diameter of 25mm and a thickness of 1.5mm. This thickness is relatively thin, which can be beneficial in applications where space is limited or weight is a concern. The filter's coating is applied to both the front and back surfaces, indicated by "and 050fn46" in the item data. This coating likely contributes to the filter's neutral density properties, ensuring minimal alteration to the color balance of the light passing through it.

The wavelength of 588nm suggests that this filter is designed for use in the yellow-green part of the visible light spectrum. However, its UV neutral density properties make it suitable for use in UV applications as well. The shape of the filter is described as "Thin Lens", indicating that it may have some lens-like properties, although this is not explicitly stated in the item data.