67-600 5mm Dia. x 25mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

The 67-600 is a high-quality double-convex lens, designed and manufactured by Edmund Optics, a leading global provider of optical components. This lens boasts a 5mm diameter and a focal length of 25mm, making it suitable for a wide range of applications.

The lens is constructed from N-BK7 Schott glass, a popular material due to its excellent optical properties and versatility. The base shape is circular, and the lens features a double-convex geometry, with radii of curvature of 25.58mm and -25.58mm for the first and second surfaces, respectively. This geometry contributes to the lens's high optical power and excellent imaging capabilities.

The 67-600 lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces. This coating is specifically designed for the near-infrared (NIR) spectrum, covering the wavelength range of 750-1550nm. It enhances the lens's performance in the NIR region, ensuring optimal transmission and minimal reflection.

The lens has an effective focal length (EFL) of 25mm, a central thickness of 1.5mm, and an edge thickness of 1.26mm. The back focal length (BFL) is 24.5mm, and the lens has no inner or outer radius, indicating a uniform thickness.