The LB4030-C is a high-quality bi-convex lens, designed and manufactured by Thorlabs, a leading vendor in the optical industry. This lens boasts a diameter of 1 inch (25.4 mm) and a focal length of 40.0 mm, making it suitable for a wide range of optical applications.
The lens is made of UV Fused Silica, a material known for its excellent transmission properties across a broad spectrum, from 190 nm to 2100 nm. This makes the LB4030-C particularly suitable for applications that require high transmission in the ultraviolet and visible regions.
The lens features an Anti-Reflection Coating (ARC) designed for the 1050-1700 nm range. This coating enhances the lens's performance by reducing surface reflections, thereby increasing the amount of light transmitted through the lens. The coating is applied to both the front and back surfaces of the lens.
The geometry of the lens is carefully crafted, with a central thickness of 6.7 mm and an edge thickness of 1.8 mm. The lens's front and back radii of curvature are 35.7 mm and -35.7 mm, respectively, resulting in a back focal length of 37.6 mm. The lens's shape is spherical, ensuring a high degree of optical quality.