The LB4913-A is a high-quality bi-convex lens, designed and manufactured by Thorlabs, a leading vendor in the optical industry. This lens is part of the UV Fused Silica family, identified by the material ID "uvfs mal- 1965".
The lens features a spherical shape, with a base shape of a circle. It has a diameter of 1 inch (25.4 mm) and a thickness that varies from 2 mm at the edge to 3.4 mm at the center. The effective focal length (EFL) of this lens is 125 mm, and the back focal length (BFL) is 123.8 mm.
The LB4913-A is coated with a broadband anti-reflection coating (ARC), designed to operate within the wavelength range of 350-700 nm. This coating is applied to both the front and back surfaces of the lens, reducing surface reflections and improving transmission.
The lens is currently in stock and available for immediate purchase. For more detailed information, including technical drawings and specifications, please refer to the vendor's website using the provided weblink.