69-443 12.0mm Dia. x 84.0mm FL; Plano-Convex Lens Laser V-Coat 633nm

The 69-443 is a Plano-Convex Spherical Lens, 12.0mm in diameter and featuring a focal length of 84.0mm, specifically designed for use with a 633nm wavelength. This lens is sourced from Edmund Optics, a leading provider of optical components.

The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low auto-fluorescence. The Plano-Convex geometry, where one side is flat and the other is rounded, is ideal for collimating or focusing light. The lens has a center thickness of 2.5mm and an edge thickness of 2.08mm, providing a robust structure while maintaining a low profile.

The lens features a front and back coating of EDM Las V-Coat 633, a highly durable and efficient coating designed for laser applications. This coating enhances the lens's performance by reducing surface reflections and increasing transmission, making it ideal for use in laser systems.

The lens's geometry includes an inner radius of 0mm and an outer radius of 0mm, indicating a uniform curvature. The effective focal length (EFL) is 84.0mm, and the back focal length (BFL) is 82.39mm, providing a long focal length that is beneficial for high magnification applications.