45-263 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=50mm MgF2 400-700nm

The 45-263 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is characterized by its 6.25 mm diameter and a focal length of 50mm, making it suitable for a wide range of optical applications. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring excellent optical performance.

The lens features a complex geometry, with a central thickness of 2mm, edge thickness of 2.77mm, and inner and outer radii of 0mm. The curvature of the lens is defined by three radii (r1, r2, and r3), which contribute to its achromatic properties, effectively minimizing chromatic aberration across the visible spectrum (400-700nm).

The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, providing excellent transmission and protection against environmental factors. The coating is designed to follow a standard curve, ensuring consistent performance across the lens' surface.

The 45-263 is a multiplet lens, meaning it is composed of multiple elements. This design allows for more precise control over the lens' optical properties, making it a versatile choice for various applications. The lens is currently in stock and available for purchase through the Edmund Optics website.