67-627 12mm Dia. x 48mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

This is a 12mm diameter, double-convex lens with a focal length of 48mm, specifically designed for use in the near-infrared (NIR) spectrum. The lens is sourced from Edmund Optics, a leading provider of optical components.

The lens is made from N-BK7 Schott glass, a popular material for its high refractive index and low dispersion. This makes it ideal for use in a wide range of optical systems, including cameras, microscopes, and other imaging devices.

The lens features a standard NIR-II coating on both the front and back surfaces. This coating is designed to enhance the lens' performance in the NIR spectrum, specifically in the 750-1550nm range. It reduces reflection and increases transmission, improving the overall efficiency and quality of the optical system.

The geometry of the lens includes a center thickness of 2.74mm and an edge thickness of 2mm. The inner and outer radii are not specified, indicating that they are not a significant factor in the lens' performance.

Please note that the lens is spherical in shape, meaning it has a curved surface. This can cause some distortion, particularly at the edges of the field of view. However, this is a common characteristic of lenses and can be corrected with appropriate optical design techniques.