SLSQ-15B-50N 15.0 mm Dia. x -49.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-15B-50N is a high-quality double-concave lens offered by OptoSigma, a leading vendor in the optical industry. This lens, designed for use in a variety of optical systems, boasts a 15.0 mm diameter and a focal length of -49.7 mm, making it suitable for applications that require a strong converging lens.

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 -46 mm and 46 mm for the first and second surfaces, respectively. This geometry results in a back focal length of -50.3 mm.

The lens is uncoated, meaning it does not have any anti-reflective or other coatings applied to its surfaces. This can be advantageous in certain applications where the uncoated surface properties are desirable. However, it's important to note that uncoated lenses can have higher reflectivity, which may need to be considered in the overall system design.

The lens has a thickness of 3.2 mm at the edge and 2 mm at the center, providing a robust and durable structure. The lens is currently in stock and available for immediate purchase, as indicated by its valid web link status.