SLB-20B-150P 20.0 mm Dia. x 150.4 mm FL; Double-Convex Lens Uncoated

The SLB-20B-150P 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 2.6 mm, providing a robust structure that can withstand typical handling and usage. The effective focal length (EFL) of this lens is 150.4 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 155.7 mm and -155.7 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 149.6 mm, which is a crucial factor to consider when integrating it into an optical system.

The SLB-20B-150P is made from the renowned material, n-BK7 Schott, which is known for its excellent optical properties. This lens is uncoated, which means it does not have any additional layers to enhance its optical performance. However, the uncoated version can still provide satisfactory performance for many applications, especially those where high light transmission is not a critical requirement.

The lens is designed to work with a wavelength of 546.1 nm, which is within the visible light spectrum. This makes it suitable for use in applications where the observation of the optical path is necessary.