SLB-20B-100P 20.0 mm Dia. x 100.5 mm FL; Double-Convex Lens Uncoated

The SLB-20B-100P is a high-quality double-convex lens, sourced from the reputable optical vendor, OptoSigma. This lens, with a base shape of a circle, is designed for use in a wide range of optical applications, thanks to its precise geometry and material composition.

The lens has a diameter of 20.0 mm, making it suitable for use in compact optical systems. The edge thickness is 2.0 mm, while the center thickness is 3.0 mm, providing a robust structure that can withstand typical handling and usage. The effective focal length (EFL) of this lens is 100.5 mm, which is a common choice for many optical designs due to its versatility.

The curvature of the lens is defined by its first and second radii of curvature, R1 and R2, which are 103.8 mm and -103.8 mm respectively. These values indicate a symmetric, double-convex lens, which is ideal for applications requiring a high degree of focusing precision. The back focal length (BFL) of this lens is 99.5 mm, a value that may be crucial in certain optical designs.

The lens is made from n-BK7 Schott, a popular optical material known for its excellent optical properties and high transmission across a wide range of wavelengths, specifically at 546.1 nm. This lens is uncoated, which may be desirable in certain applications where the natural properties of the glass are preferred.