48-535 15mm Dia. UVFS Aspheric Lens; EFL=20mm; NA=0.38 Uncoated

The 48-535 is a 15mm diameter aspheric lens, offering a high numerical aperture (NA) of 0.38 and a focal length of 20mm. This lens is sourced from Edmund Optics, a renowned vendor in the optical industry. The lens is made of UV fused silica, a material with a high transmission range, making it suitable for ultraviolet (UV) applications.

The lens features a unique aspheric design, which is characterized by its non-spherical surface. This design helps to minimize spherical aberration, a common optical issue that can lead to distorted images. The lens has a base shape of a circle, ensuring uniform light distribution and reducing vignetting effects.

The geometry of the lens includes an inner radius of 0mm, an outer radius of 0mm, a thickness at the edge of 2.68mm, and a thickness at the center of 6mm. The effective focal length (EFL) is 20mm, and the back focal length (BFL) is 15.89mm. The lens's shape is defined by its first and second radii (R1 and R2), which are 9.169mm and 0mm, respectively.

The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this does not affect its performance in UV applications, where coatings are often not required due to the low reflectivity of UV light.

The lens's catalog number is 48-535, and it is currently in stock, as indicated by its weblink status. The weblink provides direct access to the product page on the Edmund Optics website, where users can find more detailed specifications and purchase information.