45-019 12.0mm Dia. x -48 FL; MgF2 Coated; Plano-Concave Lens 400-700nm

The 45-019 is a plano-concave lens with a diameter of 12.0mm, a focal length of -48mm, and a central thickness of 3.5mm. The lens is sourced from Edmund Optics, a leading supplier of optical components. It is made of n-BK7 Schott, a popular optical glass known for its excellent optical properties and versatility.

The lens features a magnesium fluoride (MgF2) coating on both the front and back surfaces, which is standard for many optical components. This coating reduces reflective losses, enhances transmission, and improves overall optical performance. It is particularly effective in the 400-700nm wavelength range, making this lens suitable for a wide range of applications in this spectrum.

The lens's geometry is spherical, with a radius of curvature of -24.81mm on the concave surface. The lens has a clear aperture, with no inner or outer radius specified, indicating that the entire surface is available for use. The edge thickness is 4.12mm, providing structural integrity and resistance to damage.