68-000 25mm Dia. x -35 FL; NIR II Coated; Plano-Concave Lens 750-1550nm

The 68-000 is a 25mm diameter Plano-Concave lens with a focal length of -35, sourced from the renowned optical components manufacturer, Edmund Optics. This lens is designed for use within the near-infrared spectrum, specifically between 750nm and 1550nm, making it ideal for applications such as night vision, thermal imaging, and optical communication systems.

The lens is constructed from n-SF11 Schott glass, a material known for its excellent optical properties and durability. The base shape of the lens is circular, with a thickness of 6.36mm at the edge and 3.5mm at the center. The inner and outer radii are both zero, indicating a uniform curvature throughout the lens.

The 68-000 lens features a standard NIR-II coating on both the front and back surfaces. This coating is designed to enhance the lens' performance within the near-infrared spectrum, reducing surface reflections and improving transmission. The coating is part of Edmund Optics' standard curve, ensuring consistent performance across different lenses.