SLSQ-25B-25N 25.0 mm Dia. x -24.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-25B-25N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed for use in various optical applications, boasts a diameter of 25.0 mm and a focal length of -24.7 mm, making it a versatile choice for a range of setups.

The lens is crafted from fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock. The base shape of the lens is circular, and it features a double-concave geometry, with radii of curvature of -23 mm and 23 mm for the first and second surfaces, respectively. This geometry results in a back focal length of -25.3 mm.

The lens has a center thickness of 2 mm and an edge thickness of 9.4 mm, providing robustness and durability. Despite its robust construction, the lens is lightweight, making it ideal for portable or handheld devices.

The SLSQ-25B-25N is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, this does not affect its performance in many applications, and the lens can be easily customized with various coatings upon request.

Please note that the lens is designed for a wavelength of 546.1 nm. This specificity should be taken into account when selecting a lens for your application.