49-307 6.25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=25mm VIS-NIR 400-1000nm

The 49-307 is a high-quality achromatic doublet lens, boasting a 6.25 mm diameter and a focal length of 25mm, specifically designed for use in the visible to near-infrared spectrum (400-1000nm). This lens is sourced from the reputable vendor, Edmund Optics, and is available for immediate use, as indicated by its valid in-stock weblink status.

The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring excellent optical performance. The lens features a sophisticated geometry, with an inner radius of 0 and an outer radius also of 0, providing a clean, crisp optical surface. The lens has a thickness of 2.73mm at the edge, reducing unnecessary weight while maintaining structural integrity.

The 49-307 lens is coated with the EDM VIS-NIR 0SP2002000 coating on both the front and back surfaces. This coating enhances the lens's performance in the visible to near-infrared spectrum, providing superior light transmission and reducing unwanted reflections.

The lens's shape is a multiplet, which is a combination of multiple individual lenses. This design provides superior optical performance, reducing chromatic aberration and providing a sharper image. The lens's center thickness is 2.3mm, and the center thickness 'a' is 0.9mm, providing a balanced design that minimizes optical distortion.