SLSQ-25.4B-60N 25.4 mm Dia. x -59.7 mm FL; Double-Concave Lens Uncoated

OptoSigma's SLSQ-25.4B-60N is a fused silica biconcave lens, uncoated, with a diameter of 25.4 mm and a focal length of -59.7 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 at the edge and center, and its radii of curvature. The diameter of the lens is 25.4 mm, with a thickness of 5 mm at the edge and 2 mm at the center. The lens has two radii of curvature, both concave, with radii of -55.2 mm and 55.2 mm. The back focal length of the lens is -60.4 mm, and the effective focal length is -59.7 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 should be noted that uncoated lenses can have higher reflectivity and may require additional considerations for applications involving high-intensity light sources or specific wavelengths.

The lens is designed for use at a wavelength of 546.1 nm, making it suitable for a wide range of applications in the visible spectrum. Its spherical shape ensures excellent optical performance, making it a reliable choice for various optical systems.