67-478 9.0mm Dia. x 27.0mm FL; NIR II Coated; Plano-Convex Lens NIR II 750-1550nm

This 67-478 Plano-Convex Lens, sourced from Edmund Optics, is a high-quality optical component designed for use in the near-infrared (NIR) spectrum, specifically between 750nm and 1550nm. The lens boasts a 9.0mm diameter and a focal length of 27.0mm, making it a versatile choice for a range of applications.

The lens is made from Schott's n-BK7 glass, a popular material for optical elements due to its excellent optical properties and broad transmission range. The lens features a plano-convex geometry, with a spherical surface on one side and a flat surface on the other. The radius of curvature for the curved surface is 10.34mm, and the lens has an effective focal length (EFL) of 20mm.

The lens is coated with Edmund Optics' standard NIR-II coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the NIR spectrum, improving transmission and reducing reflection. The coating is applied using a standard curve, ensuring consistent performance across the lens' surface.

The lens has a thickness of 1.17mm at the edge and 2.2mm at the center. The inner and outer radii are both 0mm, indicating a uniform curvature across the lens. The lens' shape is spherical, which is ideal for applications that require a wide field of view or where spherical aberration is not a concern.