This is a Plano-Convex Lens, a type of spherical lens, sourced from Edmund Optics. The lens has a diameter of 12.0mm and a focal length of 50mm, making it suitable for a variety of optical applications. The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency and low dispersion.
The lens features a standard VIS 0° coating on both the front and back surfaces. This coating is designed to enhance the lens's performance in the visible light spectrum, specifically between 425-675nm. The coating helps to reduce surface reflections, improving the overall transmission of light through the lens.
The geometry of the lens includes a thickness of 1.19mm at the edge and 1.9mm at the center. The inner radius is 0mm, and the outer radius is also 0mm, indicating a flat surface on the uncoated side of the lens. The lens's effective focal length (EFL) is 50mm, and the back focal length (BFL) is 48.75mm.