G311325329 25.4 mm Dia. N-BK7 Double-Convex Lens; EFL=150mm 1064nm

This is a G311325329 double-convex lens, sourced from Qioptiq Photonics, with a diameter of 25.4 mm and a design optimized for a wavelength of 587.6 nm. The lens is made of N-BK7, a popular borosilicate glass known for its excellent optical properties, making it suitable for a wide range of applications.

The lens features a double-convex geometry, characterized by two spherical surfaces that curve outwards. This design provides a high refractive power, making it ideal for imaging and beam shaping applications. The lens has an effective focal length (EFL) of 150 mm, which is the distance from the lens's center to the focal point where light rays converge.

The lens's geometry includes an edge thickness of 6 mm and a center thickness of 7 mm. The inner and outer radii are 0 mm, and the radii of curvature for the first and second surfaces are 153.99 mm and -153.99 mm, respectively. This asymmetry in curvature results in a positive lens, which diverges light rays.

The lens is coated with Qio HP Nbar ARHS-YAG on both the front and back surfaces. This anti-reflection coating reduces surface reflections, enhancing transmission and improving overall system performance. The coating is specifically designed for use with YAG lasers, making this lens an excellent choice for laser applications.