This is a Plano-Convex Lens, type 48-787, with a diameter of 30.0mm and a focal length of 120.0mm. The lens is sourced from Edmund Optics and is currently in stock. It is designed for use in the near-infrared spectrum, specifically between 600 and 1050nm.
The lens is made from n-BK7 Schott, a high-quality optical glass known for its excellent transparency in the visible and near-infrared spectrum. The lens features a spherical shape, with a front radius of curvature of 62.02mm and a back focal length of 116.04mm. The edge thickness of the lens is 4.16mm, while the center thickness is 6mm.
The lens is coated with Edmund Optics' NIR I standard curve on both the front and back surfaces. This coating enhances the lens' performance in the near-infrared spectrum, improving its transmission and reducing unwanted reflections. The coating is designed to be durable and resistant to environmental factors, ensuring the lens maintains its performance over time.