SLB-25.4-30N 25.4 mm Dia. x -30.0 mm FL; Plano-Concave Lens Uncoated

The SLB-25.4-30N is a Plano-Concave Lens, part of OptoSigma's extensive range of uncoated spherical lenses. This lens is designed with a base shape of a circle, featuring a diameter of 25.4 mm and a thickness at the edge of 8.6 mm. The center thickness is 2 mm, providing a robust structure while maintaining a sleek profile.

The lens has an effective focal length (EFL) of -30 mm, making it suitable for applications that require a negative focal length. The radius of curvature (R1) is -15.57 mm, and the back focal length (BFL) is -31.3 mm, contributing to its concave shape. The lens's inner and outer radii are both 0 mm, indicating a uniform curvature throughout.

This lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and high Abbe number. The lens is designed to work with a wavelength of 546.1 nm, making it suitable for a wide range of applications.

The lens is uncoated, offering a cost-effective solution for applications where coating is not a necessity. However, for applications that require higher light transmission or protection against environmental factors, coating options are available from OptoSigma.