LA1251-A N-BK7 Plano-Convex Lens; Dia:25.0 mm; f=100.0 mm ARC 350-700nm

The LA1251-A is a high-quality Plano-Convex lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens, with a diameter of 25.0 mm, is designed for use in the visible spectrum, specifically at a wavelength of 632.8 nm.

The lens is made from N-BK7, a popular glass type in the optical industry, known for its excellent optical properties and versatility. The Plano-Convex geometry, where one side is flat and the other is curved, is a common choice for many applications due to its simple design and ease of use.

The LA1251-A has a focal length of 100.0 mm, which is the distance from the lens at which light rays converge after passing through the lens. This makes it suitable for applications that require moderate magnification or beam bending.

The lens has a thickness of 2.06 mm at the edge and 3.6 mm at the center. The inner radius is 0 mm, and the outer radius is also 0 mm, indicating a flat edge. The back focal length (BFL) is 97.6 mm, which is the distance from the lens's rear surface to the focus.

The LA1251-A is coated with ARC 350-700nm, a broadband anti-reflection coating that reduces reflection across the visible spectrum. This coating enhances the lens's performance by increasing transmission and reducing unwanted reflections.