LA1461-B N-BK7 Plano-Convex Lens; Dia:1 in; f=250.0 mm ARC 650-1050nm

The LA1461-B is a Plano-Convex lens, a type of spherical lens, sourced from Thorlabs, a renowned optical components manufacturer. This lens is designed with a base shape of a circle and is constructed from N-BK7, a popular glass type in the optical industry, known for its excellent optical properties.

The lens has a diameter of 1 inch (25.4 mm) and a thickness of 2 mm at the edge, while the center thickness is slightly more at 2.6 mm. The effective focal length (EFL) of this lens is 250 mm, making it suitable for a wide range of optical applications.

The LA1461-B features an inner radius of 0 mm and an outer radius of 0 mm, indicating a plano surface on one side and a curved surface on the other. The curvature of the lens is defined by a radius of 128.8 mm on the curved side. The back focal length (BFL) of the lens is 247.4 mm.

This lens is designed to operate at a wavelength of 587.6 nm, a common wavelength used in various optical systems. It comes with anti-reflection (AR) coatings on both the front and back surfaces, specifically the THo BBAR coating, which is optimized for the 650-1050 nm range. This coating helps to minimize surface reflections, thereby improving the overall transmission of the lens.