The 69-537 is a Plano-Convex Spherical Lens, sourced from Edmund Optics, boasting a 9.0mm diameter and a focal length of 54.0mm. This lens is designed to work optimally with a wavelength of 980nm, making it suitable for a range of applications in this spectrum.
The lens is crafted from the high-quality material, n-BK7 Schott, which is renowned for its excellent optical properties. This material ensures high transmission and low auto-fluorescence, making it ideal for use in laser applications.
The lens features a front and back coating of edm las v-coat 980. This coating is specifically designed to enhance the performance of the lens in laser applications, providing improved durability and resistance to environmental factors.
The geometry of the lens is carefully designed to provide optimal performance. The edge thickness measures 1.63mm, while the center thickness is 52.69mm. The effective focal length (EFL) is 54mm, and the radius of curvature (R1) is 27.91mm. The back focal length (BFL) is identical to the EFL, at 54mm.