SLSQ-30B-70N 30.0 mm Dia. x -69.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-30B-70N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, with a diameter of 30.0 mm, is designed for use in a variety of optical systems, offering a focal length of -69.7 mm.

The lens is made 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 -64.4 mm and 64.4 mm for the first and second surfaces, respectively. The center thickness of the lens is 2 mm, while the edge thickness is 5.5 mm, providing robustness and durability.

The lens is uncoated, offering bare optical surfaces that can be used in a wide range of applications. However, it's important to note that uncoated lenses may exhibit higher reflectivity and lower transmission compared to coated ones, especially at larger incidence angles or for shorter wavelengths.

This lens is designed to operate at a wavelength of 546.1 nm, making it suitable for use in systems that operate in the visible spectrum. The lens is currently in stock and available for immediate purchase, as indicated by its valid web link status.