17-325 25mm Dia. UVFS Aspheric Lens; EFL=25mm; NA=0.48 Uncoated

This is the 17-325 25mm Dia. UVFS Aspheric Lens, a high-quality optical component sourced from Edmund Optics. The lens is designed with a base shape of a circle and is constructed from UV Fused Silica, a material with the catalog number syn hpfs7980 corning. This material is known for its excellent transparency in the ultraviolet region, making it ideal for applications that require UV transmission.

The lens has a diameter of 25mm and a numerical aperture (NA) of 0.48. The NA is a measure of the light-gathering ability of the lens and indicates that this lens can capture a substantial amount of light, which is beneficial in many optical applications. The lens also has an effective focal length (EFL) of 25mm, which is the distance from the lens's principal point to its focal point. This EFL makes the lens suitable for use in various optical systems where a moderate focal length is required.

The lens's geometry is defined by several parameters. The inner radius is 0, and the outer radius is also 0, indicating a symmetrical design. The thickness at the edge is 4.7mm, and the thickness at the center is 12mm. The lens's shape is aspheric, meaning it is not a simple sphere but rather a more complex shape designed to reduce spherical aberration and improve optical performance.

The lens does not come with any coating, as indicated by the empty 'coating' field in the item data. This means that the lens will have the base material's natural properties, including its refractive index and dispersion characteristics.