SLB-50.8-250N 50.8 mm Dia. x -250.0 mm FL; Plano-Concave Lens Uncoated

OptoSigma's SLB-50.8-250N is a plano-concave lens with a diameter of 50.8 mm and a focal length of -250.0 mm. This lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and high transmittance in the visible spectrum. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties or protect it from environmental factors.

The lens has a thickness of 5.5 mm at the edge and 3 mm at the center, making it suitable for applications that require a thick lens. The inner and outer radii are both 0, indicating that the lens has a flat surface on one side and a curved surface on the other. The curvature of the concave surface is such that the radius of curvature is -129.75 mm.

This lens is designed for use at a wavelength of 546.1 nm, which is in the green part of the visible spectrum. It is a spherical lens, meaning that it has the same curvature in all meridional sections, making it suitable for a wide range of optical applications.

The lens is currently in stock and can be purchased directly from the OptoSigma website. It is a versatile optical component that can be used in various applications, including imaging systems, beam shaping, and optical interferometry.