The LB4223-A is a high-quality bi-convex lens, specifically designed for use in the ultraviolet (UV) spectrum. This lens, sourced from the reputable vendor Thorlabs, boasts a diameter of 1 inch and a focal length of 750.0 mm. The lens is made from UV fused silica, a material known for its excellent transparency in the UV range, making it ideal for applications that require high-resolution imaging or precise light manipulation in this spectrum.
The lens features a spherical shape, with both surfaces curved to facilitate efficient light refraction. The first surface has a radius of curvature (R1) of 689.8, while the second surface has an R2 of -689.8. This design results in an effective focal length (EFL) of 750.0 mm and a back focal length (BFL) of 749.2 mm. The lens has a center thickness of 2.2 mm and an edge thickness of 2 mm, providing robustness and durability.
The LB4223-A is coated with a broadband anti-reflection coating (ARC) that spans from 350 to 700 nm. This coating reduces surface reflections, thereby enhancing the lens's transmission efficiency and overall performance. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from all angles.