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

The 47-690 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 reputable Schott brand. These materials are carefully selected to minimize chromatic aberration, a common issue in optics where different wavelengths of light are focused at different points.

The 47-690 features a standard curvature coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating enhances the lens's durability and performance by reducing reflection and improving transmission.

The lens geometry is intricately designed with a center thickness of 3mm, an edge thickness of 3.12mm, and inner and outer radii of 0mm. The first and second radii are 8.63mm and -5.29mm, respectively, while the third radius is -51.17mm. The center thickness 'a' is 0.8mm.

This lens is a multiplet, meaning it is composed of multiple elements. The multiplet design allows for more precise control over optical properties, making it suitable for a wide range of applications.

The 47-690 is available from Edmund Optics, a leading provider of optical components. According to the vendor, the item is currently in stock, ensuring quick delivery for your optical project needs.