LE1015-A 50.8 mm Dia. N-BK7 Positive Meniscus Lens; EFL=200mm 350-700nm

The LE1015-A is a 50.8 mm diameter Spherical Lens with a Positive Meniscus shape, sourced from the reputable optical components manufacturer, Thorlabs. This lens is designed for use in the visible spectrum, specifically between 350nm and 700nm.

The lens is made from N-BK7, a high-quality borosilicate glass commonly used in optical systems due to its excellent optical properties. The lens has a double-sided anti-reflection coating (AR coating), denoted as 'tho a bbar' for both the front and back surfaces. This coating enhances transmission and reduces unwanted reflections, thereby improving the overall efficiency and performance of the lens.

The lens geometry includes a diameter of 50.8mm, a center thickness of 6.2mm, and an edge thickness of 2.9mm. The effective focal length (EFL) is 200mm, and the back focal length (BFL) is 192.9mm. The first and second radii of curvature (R1 and R2) are 65.2mm and 171.6mm, respectively. The lens is designed to be convex-concave in shape, which is also referred to as a meniscus lens.

The lens is in stock and available for immediate purchase through the Thorlabs website, as indicated by the 'weblink status' field in the item data. This lens is a versatile and high-performing optical component, suitable for a wide range of applications in fields such as imaging, beam shaping, and laser systems.