49-367-INK 25 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=275mm VIS-NIR 400-1000nm

The 49-367-INK is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 25 mm, is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning from 400 to 1000 nm. The lens boasts an effective focal length (EFL) of 275 mm, making it suitable for a wide range of optical applications.

The lens is composed of two elements, made from N-BK7 and N-SF5 Schott glass. These materials were chosen for their excellent optical properties, including low dispersion and high transmittance in the specified wavelength range. The first element has a radius of curvature of 171.03 mm, while the second element has a radius of -121.54 mm. The lens's overall thickness at the edge is 6.82 mm, with a center thickness of 5 mm and a center thickness 'a' of 2.2 mm.

The lens is coated with Edmund Optics' VIS-NIR-0SP2002000 coating on both the front and back surfaces. This coating is designed to enhance the lens's performance in the VIS-NIR spectrum, reducing surface reflections and improving overall transmission.

The 49-367-INK is currently in stock and available for immediate purchase. For more information, including detailed specifications and pricing, please refer to the provided weblink.