49-477 12mm Dia. x 30mm FL; NIR I Coated; Double-Convex Lens NIR I 600-1050nm

The 49-477 is a high-quality double-convex lens, 12mm in diameter and 30mm in focal length, designed for use in the near-infrared spectrum, specifically between 600 and 1050nm. This lens is sourced from the reputable optical vendor, Edmund Optics, ensuring top-tier performance and reliability.

The lens is constructed from Schott's n-BK7 glass, a material renowned for its excellent optical properties, including a high refractive index and low dispersion. This makes the lens ideal for applications that require high-resolution imaging and minimal chromatic aberration.

The 49-477 features a standard EDM NIR-I coating on both the front and back surfaces. This coating enhances the lens's performance in the near-infrared spectrum by reducing surface reflections and increasing transmission. The coating also provides protection against environmental factors, ensuring the lens maintains its optical performance over time.

The lens's geometry is meticulously designed, with a center thickness of 3.7mm and an edge thickness of 2.5mm. The radii of curvature for the front and back surfaces are 30.36mm and -30.36mm, respectively, resulting in a back focal length of 28.75mm. This geometry, combined with the lens's material and coating, contributes to its superior optical performance.