SLSQ-15B-15N 15.0 mm Dia. x -14.7 mm FL; Double-Concave Lens Uncoated

The SLSQ-15B-15N is a double-concave lens with a diameter of 15.0 mm and a focal length of -14.7 mm, making it a negatively powered lens. This lens is sourced from OptoSigma, a renowned vendor in the optical industry, and is uncoated.

The lens is made of fused silica, a material known for its high transparency and resistance to thermal shock. The base shape is circular, and the lens features a double-concave geometry, meaning it is curved inward on both sides. The center thickness of the lens is 2 mm, while the edge thickness is 6.4 mm, providing a robust structure.

The lens has an inner radius of 0 mm and an outer radius of 0 mm, indicating a symmetrical curvature. The effective focal length (EFL) is -14.7 mm, and the back focal length (BFL) is -15.3 mm. The radii of curvature for the first and second surfaces are -13.8 mm and 13.8 mm, respectively.

This lens is designed to operate at a wavelength of 546.1 nm. It is important to note that the lens is uncoated, which may affect its performance in certain applications, particularly those requiring high transmission or resistance to environmental factors. However, the uncoated feature can be advantageous in applications where cost, simplicity, or specific spectral performance is a priority.