49-361-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=125mm VIS-NIR 400-1000nm

The 49-361-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 25 mm, is designed for use in the visible to near-infrared spectrum, spanning 400-1000nm. The lens is specifically engineered to minimize chromatic aberration, ensuring clear, focused images across the entire spectral range.

The lens features a focal length of 125mm, indicated by the EFL (Effective Focal Length) parameter. This long focal length makes it suitable for applications requiring moderate magnification and a narrow field of view. The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring high optical quality and durability.

The geometry of the lens is carefully crafted, with a central thickness of 6mm and edge thickness of 6.89mm. The lens surfaces are coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which provides excellent transmission and protection across the visible and near-infrared spectrum.

This lens is a multiplet, meaning it is composed of multiple elements. The curvature of these elements is precisely designed and manufactured, with radii of 76.28mm, -54.55mm, and -162.43mm, contributing to the lens's high optical performance. The lens is in stock and ready for immediate use, as indicated by its weblink status.