49-289-INK 50 mm Dia. N-BAK4/N-SF10 Achromatic Doublet; EFL=350mm VIS 0° 425-675nm

The 49-289-INK is a high-quality achromatic doublet lens, boasting a 50 mm diameter and an effective focal length (EFL) of 350 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm. This lens is sourced from the reputable optical vendor, Edmund Optics, and is available for purchase through their official website.

The lens is constructed from two types of Schott glass, N-BAK4 and N-SF10, which are renowned for their excellent optical properties. The front and back surfaces of the lens are coated with the EDM VIS-0 standard curve coating, providing improved light transmission and protection against environmental factors.

The lens geometry is intricately designed, with a thickness of 10.07 mm at the edge, a center thickness of 8 mm, and an inner radius of 0 mm. The first and second radii of curvature are 227.16 mm and -174.83 mm, respectively, while the third radius of curvature is -571.49 mm. This complex design ensures superior optical performance and minimal chromatic aberration.

The 49-289-INK is a multiplet lens, meaning it is composed of multiple elements. This design allows for more precise control over optical aberrations, resulting in sharper images and improved overall performance. The lens is currently in stock, ready for immediate shipping and integration into your optical system.