SLSQ-25.4B-80N 25.4 mm Dia. x -79.7 mm FL; Double-Concave Lens Uncoated

OptoSigma's SLSQ-25.4B-80N is a fused silica biconcave lens, uncoated, with a diameter of 25.4 mm and a focal length of -79.7 mm. This lens is designed for use in applications that require a high-quality, double-concave lens.

The lens is made from fused silica, a material known for its excellent optical properties, including a low coefficient of thermal expansion, high thermal shock resistance, and high transmission in the ultraviolet, visible, and infrared regions. The material ID for this lens is "fused sil mal-1965", indicating its specific type of fused silica.

The geometry of the lens is defined by its diameter, thickness, and radii of curvature. The diameter of the lens is 25.4 mm, and it has an edge thickness of 4.2 mm and a center thickness of 2 mm. The radii of curvature for the first and second surfaces of the lens are -73.6 mm and 73.6 mm, respectively. The back focal length of the lens is -80.4 mm, and it has no inner or outer radius.

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 a specific coating is not required or desired.

The lens is designed to be used at a wavelength of 546.1 nm. It is a spherical lens, meaning its surfaces are sections of a sphere.