The 45-909 is a high-quality double-convex lens, boasting a 50mm diameter and a focal length of 250mm. This lens is designed for use within the visible to near-infrared spectrum, specifically catering to wavelengths between 400 and 1000nm.
Manufactured by the reputable optical vendor, Edmund Optics, this lens is constructed from the high-grade material, n-BK7 Schott, ensuring durability and longevity. The lens features a front and back coating of edm visnir0sp2002000, which enhances its performance within the specified wavelength range.
The lens's geometry is meticulously designed, with an edge thickness of 2.5mm and a center thickness of 4.93mm. The inner and outer radii are 0mm, and the lens has a base shape of a circle. The effective focal length (EFL) is 250mm, and the back focal length (BFL) is 248.37mm. The first and second radii of curvature are 257.57mm and -257.57mm, respectively.
This lens is a versatile and reliable option for various optical applications, offering superior quality and precision. Its detailed specifications make it an ideal choice for users seeking a lens tailored to the visible to near-infrared spectrum.