This is a Plano-Convex Lens, type 38-591, with a diameter of 12.5mm and a focal length of 75.0mm. The lens is sourced from Edmund Optics, a reputable vendor in the optical industry. The lens is made of BK7 Schott, a popular optical glass known for its excellent optical properties and versatility.
The lens features a YAG-BBAR coating on both the front and back surfaces, specifically designed for the wavelength range of 500-1100nm. This coating enhances the lens's performance by reducing reflection and increasing transmission, making it ideal for various applications within this wavelength range.
The geometry of the lens includes an edge thickness of 1.19mm and a center thickness of 1.7mm. The lens's inner and outer radii are both zero, indicating a simple spherical shape. The lens's base shape is circular, adding to its versatility in various applications.
The lens's EFL (Effective Focal Length) is 75mm, and the radius of curvature (R1) is 38.76mm. The back focal length (BFL) is 73.88mm. These specifications make the lens suitable for a wide range of optical systems.