The 69-315 is a Plano-Convex spherical lens, characterized by its 6.0mm diameter and 7.5mm focal length. This lens is sourced from Edmund Optics, a reputable vendor known for their high-quality optical components. The lens is designed to work with a wavelength of 405nm, making it suitable for applications such as laser systems and fluorescence microscopy.
The lens is made from n-sf11 Schott, a high-index glass that offers excellent optical performance. It has a refractive index of 1.8152 at 404.66nm, contributing to its high optical power. The lens has a center thickness of 2.5mm and an edge thickness of 1.68mm, providing a robust structure while maintaining a compact form factor.
The lens features a front and back coating of EDM Las V-Coat 405, a specialized coating designed for laser applications. This coating enhances the lens's durability and performance, reducing surface reflections and increasing transmission efficiency.
The lens's geometry, including its inner and outer radii, is optimized for its specific application. The base shape is circular, ensuring uniform light distribution and minimal distortion. The lens's effective focal length (EFL) is 7.5mm, and its back focal length (BFL) is 6.1mm, making it suitable for use in various optical systems.