The 69-331 is a high-quality Plano-Convex spherical lens, boasting a 10.0mm diameter and a focal length of 25.0mm, specifically designed for use with a 405nm wavelength. This lens is sourced from the renowned optical vendor, Edmund Optics, ensuring top-tier performance and reliability.
The lens is crafted from the esteemed N-BK7 glass from Schott, a material known for its excellent optical properties, including high homogeneity, low auto-fluorescence, and superior transmittance across a wide spectrum. This makes the 69-331 an ideal choice for applications that demand high-precision optics.
The Plano-Convex geometry of the lens, characterized by a flat front surface and a curved back surface, offers a number of advantages. It minimizes spherical aberration, enhances light gathering capability, and provides a greater depth of focus compared to simple lenses. The lens has an inner radius of 0mm and an outer radius of 0mm, further optimizing its optical performance.
The 69-331 features a front and back coating of Edmund Optics' Las V-Coat 405, a proprietary anti-reflection coating designed for use with 405nm lasers. This coating significantly reduces surface reflections, improves transmission, and increases the overall efficiency of the lens.