49-485 18mm Dia. x 27mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

The 49-485 is a high-quality double-convex lens, 18mm in diameter and 27mm in focal length, sourced from the renowned optical components vendor, Edmund Optics. This lens is designed for use within the near-infrared (NIR) spectrum, specifically between 600 and 1050 nanometers, making it suitable for a wide range of applications in this wavelength range.

The lens is constructed from N-BK7 Schott glass, a popular material in optical systems due to its excellent optical properties and versatility. The double-convex geometry, characterized by two outwardly curved surfaces, is designed to provide a wide field of view and low distortion, making it ideal for imaging applications.

The 49-485 lens features a standard coating on both the front and back surfaces, specifically the EDM NIR-I std curve coating. This coating is designed to enhance the lens' performance within the NIR spectrum, improving transmission and reducing unwanted reflections.

The lens has a center thickness of 5.5mm and an edge thickness of 2.42mm, providing a robust and durable design. The effective focal length (EFL) is 27mm, and the radii of curvature for the first and second surfaces are 27.08mm and -27.08mm, respectively. The back focal length (BFL) is 25.25mm.