47-359 12mm Dia. x 18mm FL; VIS 0deg Coated; Double-Convex Lens VIS 0deg 425-675nm

The 47-359 is a high-quality double-convex lens, boasting a 12mm diameter and a focal length of 18mm. This lens is sourced from the reputable optical vendor, Edmund Optics, and is available for immediate purchase. The lens is designed for use within the visible light spectrum, specifically catering to wavelengths between 425 and 675nm.

The lens is constructed from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The front and back surfaces of the lens are coated with the EDM VIS-0 standard curve coating, which is designed to enhance the lens's performance within the visible light spectrum. This coating aids in reducing surface reflections, thereby increasing the overall transmission of light through the lens.

The lens's geometry is meticulously crafted, with a center thickness of 3.48mm and an edge thickness of 1.42mm. The radii of curvature for the first and second surfaces are 18.01mm and -18.01mm, respectively. The back focal length of the lens is 16.81mm, and the effective focal length is 18mm. The lens's shape is spherical, ensuring a high degree of optical precision.