The 89-411 is a 5mm diameter, 10mm focal length Plano-Convex lens, sourced from Edmund Optics. This lens, made from fused silica (mal-1965), is uncoated and optimized for use in the UV spectrum, specifically at a wavelength of 587.6nm.
The lens geometry features an edge thickness of 1.26mm and a center thickness of 2mm. The inner radius is 0mm, and the outer radius is also 0mm, indicating a sharply curved convex surface. The lens has a base shape of a circle and a shape that is spherical, contributing to its focusing capabilities.
The lens's effective focal length (EFL) is 10mm, and the radius of curvature (R1) is 4.59mm. The back focal length (BFL) is 8.63mm. These specifications make the lens suitable for various applications that require a compact, high-performance optical component.
Please note that the lens is uncoated, which may affect its performance in certain applications. However, this also means that the lens is more cost-effective and can be a good choice for applications where coating is not a necessity.
For more information, including pricing and availability, please refer to the provided weblink.