47-657-INK 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=45mm VIS 0° 425-675nm

The 47-657-INK is a high-quality Achromatic Doublet Lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 9 mm diameter and an effective focal length (EFL) of 45 mm, specifically designed for the visible light spectrum, spanning 425-675 nm.

The lens is meticulously crafted from two distinct materials, N-BK7 and N-SF5, both from Schott's extensive catalog. This combination ensures superior optical performance, minimizing chromatic aberration and delivering sharp, clear images. The lens features a standard curve coating on both the front and back surfaces, further enhancing its light transmission capabilities.

The geometry of the lens is equally impressive, with a thickness of 3.76 mm at the edge and 3 mm at the center. The inner and outer radii are 0, suggesting a symmetrical design that ensures consistent performance across various applications. The lens also features a central thickness of 1.3 mm and a radius of curvature (r1, r2, r3) of 27.83 mm, -19.75 mm, and -57.06 mm, respectively.

According to the vendor's website, this item is currently in stock, making it an ideal choice for users seeking immediate solutions. The item's catalog number, 47-657-INK, can be used for easy reference and tracking.