49-285-INK 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=150mm VIS 0° 425-675nm

The 49-285-INK is a high-quality achromatic doublet lens, sourced from Edmund Optics, featuring a 50 mm diameter and an effective focal length (EFL) of 150 mm. This lens is specifically designed for use within the visible light spectrum, spanning from 425 to 675 nm.

The lens is constructed from two types of glass: N-BAK4 and N-SF10, both from Schott. These materials are carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. By combining these materials, the 49-285-INK achieves superior color correction, making it ideal for a wide range of applications.

The lens geometry includes an outer radius of 0 mm, an inner radius of 0 mm, and a thickness at the edge of 8.92 mm. The thickness at the center is 9.5 mm, with an additional 4 mm of material (center a) for added durability and stability. The lens has a standard curvature coating on both the front and back surfaces, further enhancing its performance and longevity.

This lens is available for purchase directly from the Edmund Optics website, where it is listed as being in stock. For more detailed specifications, technical drawings, and additional product images, users are encouraged to visit the product page linked in the item data.