SLSQ-30-60N 30.0 mm Dia. x -60.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-30-60N is a Plano-Concave Lens, a type of spherical lens, sourced from OptoSigma. This lens is characterized by its fused silica material, denoted as "fused sil mal-1965" in the item data, and its uncoated surface. The lens has a diameter of 30.0 mm and a center thickness of 2.0 mm, with an edge thickness of 6.4 mm.

The lens's design includes a concave surface with a radius of curvature (R1) of -27.6 mm, resulting in a back focal length (BFL) of -61.4 mm. The effective focal length (EFL) is -60.0 mm, which is the distance from the lens's principal point to the focal point when the lens is used in air. The lens's inner and outer radii are both 0 mm, indicating a simple, circular geometry.

This lens is designed to operate at a wavelength of 546.1 nm. The uncoated surface of the lens may result in higher reflectivity compared to coated lenses, which could impact the lens's performance in certain applications. However, the uncoated surface also allows for greater customization, as users can apply their own coatings to suit their specific needs.