SLSQ-20-150N 20.0 mm Dia. x -150.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-20-150N is a Plano-Concave Lens, part of the Spherical Lens category, sourced from the reputable vendor OptoSigma. This lens is characterized by its circular base shape and uncoated surface, making it suitable for a wide range of optical applications.

The lens has a diameter of 20.0 mm and a thickness at the edge of 2.7 mm, ensuring robustness while maintaining a compact profile. The center thickness is 2.0 mm, contributing to its overall lightweight design. The effective focal length (EFL) of this lens is -150.0 mm, indicating its concave nature, which is further emphasized by its radius of curvature (R1) of -69.0 mm.

The back focal length (BFL) of the SLSQ-20-150N is -151.4 mm, a value that is crucial in determining the positioning of the lens within an optical system. Notably, the lens does not have an inner or outer radius, suggesting a uniform curvature across its surface.

The lens is made of fused silica, a material with the material ID "fused sil mal-1965". This material is known for its excellent optical properties, including high transparency and resistance to thermal shock. The lens is designed to operate at a wavelength of 546.1 nm, a common wavelength for visible light applications.