The LB5-1300 Spherical Ball Micro Lens is a 1300 nm anti-reflection coated, 5.0 mm diameter, spherical ball lens with a 2.75 mm focal length, a 0.25 mm working distance, and a 4.0 mm clear aperture. Spherical ball lenses are commonly used for laser collimating and focusing, laser-to-fiber coupling, fiber-to-fiber coupling, and fiber-to-detector coupling. Their compact size makes them useful in a variety of applications.