SLB-40B-80P 40.0 mm Dia. x 81.2 mm FL; Double-Convex Lens Uncoated

The SLB-40B-80P 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 40.0 mm and a center thickness of 6.9 mm, with the edge thickness being 2.0 mm. The effective focal length (EFL) of this lens is 81.2 mm, making it suitable for applications that require a longer focal length. The first radius of curvature (R1) is 83.04 mm, while the second radius (R2) is -83.04 mm, indicating its double-convex nature. The back focal length (BFL) of this lens is 78.8 mm.

The SLB-40B-80P is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. This lens is uncoated, which means it does not have any additional layers to enhance its optical properties. However, it can be used in applications where such coatings are not required or can be added later.

The lens is designed to work with a wavelength of 546.1 nm, making it suitable for use in a wide range of applications that use visible light. The lens is spherical in shape, a common choice for many optical applications due to its ease of manufacturing and use.