47-690-INK 6.25 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=12.5mm VIS 0° 425-675nm

The 47-690-INK is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 12.5mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm.

The lens is composed of two types of glass, N-BAF10 and N-SF10, both from the renowned optical glass manufacturer Schott. 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.

The lens features a standard curve coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating enhances the lens's durability and resistance to environmental factors, while also reducing surface reflections to improve light transmission.

The geometry of the lens is meticulously designed, with a thickness of 3.12mm at the edge and 3mm at the center. The center thickness is further divided into two parts, with the first part being 0.8mm thick. The lens's inner and outer radii are 0, indicating a circular shape. The radii of curvature, r1, r2, and r3, are 8.63mm, -5.25mm, and -51.17mm respectively.

This lens is available from Edmund Optics and is currently in stock. For more information, including pricing and availability, please refer to the provided weblink.