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

The 49-388-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 40 mm, is designed for use in the visible (VIS) and near-infrared (NIR) spectrum, specifically catering to the wavelength range of 400-1000nm.

The lens boasts an effective focal length (EFL) of 500mm, making it suitable for a wide range of optical applications. The achromatic design of this doublet lens ensures that chromatic aberration, the common issue of different wavelengths of light focusing at different points, is minimized. This is achieved through the use of two different types of glass, N-BK7 and N-SF5, each with unique refractive indices and dispersions.

The lens features a center thickness of 6mm and edge thickness of 9.04mm, providing robustness and durability. The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, enhancing its transmission capabilities across the specified wavelength range.

The 49-388-INK is currently in stock and available for immediate purchase through the Edmund Optics website. For more detailed information, including technical specifications and performance data, please refer to the product's dedicated webpage.