67-598 5mm Dia. x 15mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

The 67-598 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading provider of optical components. This lens boasts a 5mm diameter and a focal length of 15mm, making it suitable for a wide range of applications.

The lens is constructed from N-BK7 Schott glass, a material known for its excellent optical properties and versatility. The base shape of the lens is circular, and it features a double-convex geometry, with radii of curvature of 15.16mm on both sides. This geometry provides a high level of optical power and a short focal length, making the lens ideal for use in compact optical systems.

The lens has a thickness of 1.58mm at the edge and 2mm at the center, providing a robust and durable structure. The effective focal length (EFL) of the lens is 15mm, and the back focal length (BFL) is 14.33mm. The lens does not have any inner or outer radius, indicating a uniform thickness across the lens.

The 67-598 lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens' performance in the near-infrared (NIR) region, specifically between 750nm and 1550nm. The coating reduces reflection and increases transmission in this spectral range, improving the overall efficiency and performance of the optical system.