32-309 12.5 mm Dia. S-BAH11/N-SF10 Achromatic Doublet; EFL=20mm MgF2 400-700nm

The 32-309 is a high-quality achromatic doublet lens, sourced from the renowned optical components vendor, Edmund Optics. This lens, with a diameter of 12.5 mm, is designed for use in the visible light spectrum, specifically between 400-700nm. The lens features an effective focal length (EFL) of 20mm, making it suitable for a wide range of optical applications.

The lens is composed of two elements: S-BAH11 from Ohara and N-SF10 from Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems. The front and back surfaces of the lens are coated with EDM MgF2, a standard coating that enhances light transmission and reduces surface reflections.

The lens geometry is meticulously designed, with a central thickness of 5.25mm and edge thickness of 4.62mm. The lens features three radii of curvature: r1 at 13.98mm, r2 at -9.35mm, and r3 at -76.14mm. The inner and outer radii are both zero, indicating a circular shape.

The lens is available in a multiplet configuration, offering versatility and customization options for various optical systems. The weblink provided leads to the product page on Edmund Optics' website, where users can find more detailed specifications, pricing, and availability information.