12-922 12.5 mm Dia. N-BAF10/N-SF57 Mounted Achromatic Doublet; EFL=14mm MgF2 400-700nm

This is a 12.5 mm diameter achromatic doublet lens, model number 12-922, sourced from the renowned optical vendor, Edmund Optics. The lens is mounted and features an effective focal length (EFL) of 14mm, designed for use within the wavelength range of 400-700nm.

The lens is composed of two types of glass, N-BAF10 and N-SF57, both from Schott. This combination is strategically chosen to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The achromatic doublet design ensures that the lens focuses both red and blue light to the same point, providing sharper images.

The lens geometry is meticulously designed, with an inner radius of 0mm, an outer radius of 0mm, and a center thickness of 6.23mm. The edge thickness is 5.34mm, and the lens features a curvature of r1=10.6mm and r2=-7.72mm, with an additional curvature of r3=-56.54mm. This specific geometry is optimized for the lens's intended application.

The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, providing improved light transmission and protection against environmental factors. The coating is designed to the standard curve, ensuring consistent performance.

This lens is classified as a multiplet, a complex optical system made up of multiple lenses. It is designed for circular elements, making it suitable for a wide range of applications. The lens is currently in stock and available for immediate purchase, as indicated by its valid weblink status.