LA4158-B UVFS Plano-Convex Lens; Dia:1 in; f=250 mm ARC 650-1050nm

The LA4158-B UVFS Plano-Convex Lens is a high-quality optical component designed for use in a wide range of applications. Manufactured by Thorlabs, a leading vendor in the field of optical components, this lens boasts a diameter of 1 inch (25.4 mm) and a focal length of 250 mm, making it suitable for various optical systems.

The lens is made of UVFS material, which is specifically designed for use in the ultraviolet to near-infrared spectrum, with a central wavelength of 587.6 nm. This makes it ideal for applications that require transmission in these wavelength ranges. The lens features a plano-convex geometry, meaning one side is flat while the other is curved, which can help to reduce spherical aberration and improve image quality.

The LA4158-B UVFS Plano-Convex Lens comes with broadband anti-reflection coatings on both the front and back surfaces. These coatings, designated as 'tho b bbar', are designed to minimize reflection and increase transmission, thereby enhancing the performance of the lens. The thickness of the lens at the edge is 2 mm, while the center thickness is 2.7 mm, providing a balanced profile for efficient light transmission.

The lens has an effective focal length (EFL) of 250.9 mm, calculated using the formula EFL = (n - 1) * R, where n is the refractive index of the material and R is the radius of curvature. The front radius of curvature (R1) is 115 mm, and the back focal length (BFL) is 249 mm. The lens does not have an inner or outer radius, indicating a uniform curvature across the surface.