SLSQ-25-40N 25.0 mm Dia. x -40.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-25-40N is a Plano-Concave Spherical Lens, uncoated, with a diameter of 25.0 mm and a focal length of -40.0 mm. This lens is sourced from OptoSigma, a renowned vendor in the optical industry. The lens is made of fused silica, a material known for its excellent optical properties, including high transparency and resistance to thermal shock.

The lens geometry is characterized by its base shape, which is circular, and its thickness. The edge thickness is 6.9 mm, while the center thickness is 2 mm. The lens's inner and outer radii are both 0 mm, indicating a uniform curvature. The effective focal length (EFL) is -40.0 mm, and the radius of curvature (R1) is -18.4 mm. The back focal length (BFL) is -41.4 mm.

The lens is designed to operate at a wavelength of 546.1 nm. It is important to note that the lens does not come with any coating, which may affect its performance in certain applications. However, its uncoated nature can be advantageous in applications where coating may introduce unwanted reflections or alter the optical properties of the lens.

The lens is currently in stock and can be purchased directly from the vendor's website. The provided weblink leads to the product page for easy access and purchase.