33-393 12mm Dia. x 24mm FL; NIR II Coated; Double-Convex Lens NIR II 750-1550nm

This 12mm diameter by 24mm focal length (FL) double-convex lens, model 33-393, is a specialized optical component designed for use in the near-infrared (NIR) spectrum, specifically covering the 750-1550nm range. The lens is sourced from the reputable vendor, Edmund Optics, and is currently in stock, as indicated by its weblink status.

The lens is made from the high-quality material, N-BK7 Schott, a borosilicate glass known for its excellent optical properties, including low dispersion and high transmission in the visible and near-infrared spectra. This makes it an ideal choice for applications that require high-resolution imaging and minimal chromatic aberration.

The lens features a double-convex geometry, with radii of curvature of 24.108mm for the first surface and -24.108mm for the second surface. This geometry results in a back focal length (BFL) of 22.65mm and an effective focal length (EFL) of 24mm. The lens has a thickness of 2.48mm at the edge and 4mm at the center, providing a robust and durable structure.

The lens is coated with Edmund Optics' NIR-II standard curve coating on both the front and back surfaces. This coating enhances the lens's performance in the NIR spectrum, improving its transmission and reducing reflections. The coating is designed to maintain high performance across the entire NIR spectrum, making this lens suitable for a wide range of applications.