This is a PLCC-12.7/30.9C 12.7 mm Dia. N-BK7 Plano-Concave Lens, designed with a focal length of -60mm and sourced from the reputable vendor, Laser Components. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties.
The lens is a spherical type, specifically a Plano-Concave lens, with a base shape of a circle. The diameter of the lens is 12.7 mm, and the center thickness is 2 mm. The inner and outer radii are both 0, indicating a simple concave shape.
The lens is made of N-BK7, a type of glass commonly used in optical applications due to its excellent optical properties. The wavelength for this lens is 633 nm.
The lens is currently in stock and more information about it can be found on the Laser Components website using the provided weblink.