SLB-25B-80N 25.0 mm Dia. x -79.7 mm FL; Double-Concave Lens Uncoated

The SLB-25B-80N is a high-quality double-concave lens, sourced from the reputable vendor OptoSigma. This lens is designed with a base shape of a circle and features a spherical geometry, making it suitable for a wide range of optical applications.

The lens has a diameter of 25.0 mm, providing a substantial surface area for light transmission. The edge thickness is 4.0 mm, and the center thickness is 2.0 mm, offering a robust structure while maintaining a sleek profile. The effective focal length (EFL) of this lens is -79.7 mm, indicating its double-concave nature, which is further emphasized by its radii of curvature, R1 (-83.04 mm) and R2 (83.04 mm). The back focal length (BFL) is -80.3 mm.

The lens is crafted from the renowned material n-BK7 Schott, a borosilicate crown glass known for its excellent optical properties, including low dispersion and high transmission in the visible spectrum. The wavelength for this lens is 546.1 nm.

Notably, this lens is uncoated, offering users the flexibility to apply their preferred coating based on their specific application requirements. This lens is currently in stock and available for immediate use or integration into your optical system.