The LB4096-B is a high-quality bi-convex lens made from UV fused silica, a material renowned for its excellent transmission properties and resistance to thermal shock. This lens, sourced from Thorlabs, boasts a diameter of 1 inch (25.4 mm) and a focal length of 50.0 mm, making it suitable for a wide range of optical applications.
The lens features a double-sided broadband anti-reflection coating, designed to minimize surface reflections and optimize transmission across the 650-1050nm spectral range. This coating, denoted as 'tho b bbar', ensures high-performance light transmission, making the lens ideal for use in laser systems, imaging applications, and other optical setups.
The lens's geometry is characterized by its spherical shape, with radii of curvature of 45.1 mm for both the front and back surfaces. This design results in an effective focal length (EFL) of 50 mm and a back focal length (BFL) of 48 mm. The lens has a central thickness of 5.7 mm and an edge thickness of 1.8 mm, contributing to its robustness and durability.