The 69-404 is a Plano-Convex spherical lens, characterized by its circular base shape and a diameter of 25.0mm. This lens is designed with a large focal length of 500.0mm, making it suitable for applications that require a long focal distance. The lens is fabricated from the high-quality material n-BK7 Schott, ensuring excellent optical performance.
The lens features a V-coat 532nm coating on both the front and back surfaces, enhancing its performance in laser applications at a wavelength of 532nm. This coating is specifically designed to provide high transmission and low reflection, making it ideal for use in laser systems.
The geometry of the lens includes a thickness of 2.9mm at the edge and 3.2mm at the center. The effective focal length (EFL) is 500.0mm, and the back focal length (BFL) is 497.89mm. The lens is sourced from the reputable vendor Edmund Optics, ensuring reliability and quality.