47-666 12.5 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=45mm VIS 0° 425-675nm

The 47-666 is a high-quality achromatic doublet lens, boasting a 12.5 mm diameter and an effective focal length (EFL) of 45mm, specifically designed for the visible light spectrum ranging from 425 to 675nm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available for purchase through their official website.

The lens is constructed from two types of Schott glass: N-BK7 and N-SF5. These materials are carefully selected to minimize chromatic aberration, a common issue in lens systems where different wavelengths of light are focused at different points. By combining these materials, the 47-666 achieves superior color correction, making it an ideal choice for a wide range of applications that require high-resolution imaging.

The lens geometry is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a central thickness of 3.5mm. The edge thickness is 3.94mm, providing robustness and durability. The lens also features a front and back coating of edm vis-0 std curve, which enhances its light transmission capabilities and further improves its overall performance.

In terms of shape, the 47-666 is a multiplet lens, which means it is composed of multiple optical elements. This design allows for more complex optical corrections, making the lens suitable for more demanding applications. Despite its advanced design, the lens remains compact and lightweight, making it easy to integrate into various optical systems.