This is a Plano-Convex Lens, a type of spherical lens, sourced from Edmund Optics. The lens has a diameter of 25.0mm and a focal length of 400.0mm, making it suitable for a variety of optical applications. The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and chemical durability.
The lens features a YAG-BBAR coating on both the front and back surfaces. This coating, which stands for Yttrium Aluminum Garnet Broadband Anti-Reflective, is designed to reduce surface reflections and increase transmission across a broad spectrum, specifically from 500 to 1100nm. This makes the lens ideal for use in systems that operate within this wavelength range.
The lens has a thickness of 2.82mm at the edge and 3.2mm at the center. The inner and outer radii are both 0, indicating a flat surface on one side and a curved surface on the other. The back focal length is 397.89mm, and the radius of curvature is 206.72mm.
According to the vendor, this item is currently in stock, making it readily available for immediate use. For more information, including technical specifications and purchasing details, please refer to the provided weblink.