LB4700 UV Fused Silica Bi-Convex Lens; Dia:0.5 in; f=40.0 mm Uncoated

The LB4700 UV Fused Silica Bi-Convex Lens is a high-quality optical component sourced from Thorlabs. This lens, with a diameter of 0.5 inches and a focal length of 40.0 mm, is designed for use in a wide range of applications that require precise optical manipulation.

The lens is made of UV Fused Silica, a material known for its excellent transmission properties across a broad spectrum, including the ultraviolet range. This makes the LB4700 particularly suitable for applications that involve UV light. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. However, its base material provides excellent performance on its own.

The lens geometry is spherical, with both surfaces curved outwards (convex). The radius of curvature for the first surface is 36.3 mm, while for the second surface it is -36.3 mm. This bi-convex design helps to minimize spherical aberration, ensuring that the lens focuses light accurately. The lens has an effective focal length (EFL) of 40.0 mm, which is the distance from the lens at which a collimated beam of light will be focused to a spot.

The lens has a thickness of 1.8 mm at the edge and 2.9 mm at the center. This asymmetry is common in lenses and helps to minimize optical distortion. The lens does not have any inner or outer radius, indicating that it is a simple, bi-convex lens.