This is a Plano-Concave lens, a type of spherical lens, sourced from Qioptiq Photonics. The lens has a diameter of 12.7 mm and a center thickness of 1.5 mm. The effective focal length (EFL) of this lens is -100mm, making it a negative or diverging lens. This particular lens is designed to operate within the wavelength range of 450-700nm, which covers the visible light spectrum.
The lens is made of N-BK7, a type of glass commonly used in optical applications due to its excellent optical properties. The front and back surfaces of the lens are coated with "qio bbar arb2visnbk7", a coating that enhances the lens's performance in the visible light spectrum.
The lens's geometry is such that it has a concave shape, meaning it is thicker at the edges and thinner at the center. The inner radius is 0, and the outer radius is also 0, indicating that the lens's curved surface is on the outside.
The lens is unmounted, meaning it does not come with any housing or mounting mechanism. This allows users to integrate it into their systems in a way that best suits their needs. The lens is currently in stock and can be purchased directly from the Qioptiq Photonics website.