49-181 3mm Dia. x 3mm FL; VIS 0deg Coated; Double-Convex Lens VIS 0deg 425-675nm

The 49-181 is a high-quality Double-Convex Lens, sourced from the renowned optical components manufacturer, Edmund Optics. This lens is designed for use within the visible light spectrum, specifically between 425-675nm, making it suitable for a wide range of optical applications.

The lens features a 3mm diameter and a focal length of 3mm, indicated by its 3mm FL designation. The double-convex geometry, characterized by its base shape of 'Circular', is defined by its radii of curvature, R1 and R2, which are 3.5mm and -3.5mm respectively. This geometry contributes to the lens's high refractive power and excellent imaging capabilities.

The lens has a center thickness of 2.3mm and an edge thickness of 1.62mm, providing robustness and durability. The effective focal length (EFL) is 3mm, and the back focal length (BFL) is 2.21mm. The lens is made from n-SF5 Schott, a high-index material known for its excellent optical properties.

The lens is coated with the EDM VIS-0 STD curve on both the front and back surfaces. This anti-reflection coating is designed to reduce surface reflections and increase transmission within the visible spectrum, further enhancing the lens's performance.