This is a Plano-Concave Lens, type of Spherical Lens, offered by Standa, a renowned vendor in the optical industry. The lens is designed with a circular base shape and is uncoated, providing a clear, unaltered view of the light passing through.
The lens has a diameter of 38.1 mm and a thickness at the edge of 6 mm, ensuring durability and stability. The center thickness is 3 mm, indicating a relatively thin lens, which can be beneficial in various applications. The effective focal length (EFL) of this lens is -150 mm, suggesting that it will diverge light rays, making it suitable for use in applications such as beam expanders or diverging lenses.
The inner and outer radii of the lens are 0, indicating a plano-concave shape. The radius of curvature (R1) is -71.415 mm, which is the radius of the curved surface of the lens. This value is negative, indicating a concave surface.
The lens is made of UVFS Mal-1965 material, which is suitable for use with a wavelength of 355 nm. This makes it ideal for applications in the ultraviolet spectrum.