49-388 40 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=500mm VIS-NIR 400-1000nm

The 49-388 is a high-quality achromatic doublet lens, boasting a 40 mm diameter and a focal length of 500mm, specifically designed for the visible to near-infrared spectrum (400-1000nm). This lens is sourced from the renowned optical vendor, Edmund Optics, and is a part of their extensive catalog.

The lens is constructed from two types of glass, N-BK7 and N-SF5, both from Schott, ensuring superior optical performance. The N-BK7, a borosilicate crown glass, is known for its low dispersion and excellent homogeneity, while the N-SF5, a fluorite crown glass, offers a high Abbe number and low refractive index. This combination effectively minimizes chromatic aberration, making the lens suitable for a wide range of applications.

The lens features a robust geometry, with a thickness of 9.04mm at the edge and 6mm at the center. The inner and outer radii are 0, indicating a circular shape. The lens's front and back surfaces are coated with edm visnir0sp2002000, a coating specifically designed for the visible to near-infrared spectrum, enhancing its light transmission capabilities and durability.

The 49-388 is currently in stock and available for immediate purchase. For more information, including pricing and detailed specifications, please refer to the provided weblink.