SLSQ-50.8-300N 50.8 mm Dia. x -300.0 mm FL; Plano-Concave Lens Uncoated

The SLSQ-50.8-300N is a Plano-Concave Spherical Lens with a diameter of 50.8 mm and a focal length of -300.0 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 edge thickness of 5.4 mm and center thickness of 3 mm. The inner and outer radii are both 0 mm, indicating a flat surface on one side and a concave surface on the other. The back focal length (BFL) is -302.1 mm, slightly longer than the effective focal length (EFL) due to the thickness of the lens.

This lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. While this may result in a lower transmission rate and increased susceptibility to environmental factors, it also means the lens has a broader spectral range and can be used with a wider variety of light sources.

The lens is designed to work with a wavelength of 546.1 nm, typically used in monochromatic light applications. It is important to note that the performance of the lens can vary depending on the wavelength and angle of incidence of the light.