45-023 20.0mm Dia. x -40 FL; MgF2 Coated; Plano-Concave Lens 400-700nm

The 45-023 is a plano-concave lens with a diameter of 20.0mm, a focal length of -40, and a central thickness of 3.5mm. The edge thickness measures 5.69mm, and the back focal length is -42.31mm. This lens is made from 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. This coating, standard from Edmund Optics, is designed to reduce reflection and increase transmission across the visible spectrum (400-700nm). The MgF2 coating provides a standard curve, ensuring high-quality performance and durability.

The lens's base shape is circular, and its geometry is spherical, which is a common shape for optical lenses due to its ease of manufacturing and high optical quality. The inner and outer radii are both zero, indicating a simple spherical shape.

This lens is sourced from Edmund Optics, a leading supplier of optical components. The web link provided in the item data indicates that the lens is currently in stock, ensuring quick and reliable delivery for your optical needs.