SLB-25.4B-50P 25.4 mm Dia. x 50.8 mm FL; Double-Convex Lens Uncoated

The SLB-25.4B-50P is a high-quality double-convex lens offered by OptoSigma, a renowned vendor in the optical industry. This lens, designed with a base shape of a circle, is fabricated from the material n-bk7 schott, a popular choice due to its excellent optical properties.

The lens boasts a diameter of 25.4 mm and a center thickness of 5.1 mm, providing a substantial base for various optical applications. The edge thickness is 1.9 mm, contributing to the lens's overall durability. The effective focal length (EFL) of this lens is 50.8 mm, making it suitable for applications that require a longer focal length.

The curvature of the lens is defined by its radii of curvature, with r1 at 51.9 mm and r2 at -51.9 mm. These values indicate a symmetrical, double-convex lens, which is beneficial for applications requiring a wide range of focus. The back focal length (BFL) of this lens is 49.2 mm, a crucial factor to consider when integrating it into optical systems.

Notably, this lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. The lens is designed to operate at a wavelength of 546.1 nm, a standard yellow-green light often used in optical testing and measurement.