This is a Si-px-50.8-50.8 50.8 mm Dia. Silicon Plano-Convex Lens, sourced from Alkor Technologies. The lens is uncoated and features a spherical shape, making it suitable for a wide range of optical applications.
The lens has a diameter of 50.8 mm and a thickness at the edge of 2.5 mm. The thickness at the center is 5.2 mm, and the effective focal length (EFL) is also 50.8 mm. The lens's inner radius is 0, and the outer radius is also 0, indicating a plano-convex geometry.
The lens is made of silicon, specifically silicon sal vil 1957, and is designed to work with a wavelength of 10600 nm. The base shape of the lens is circular, and it does not have any coating.
The item data suggests that this lens is in stock and available for purchase. For more information, you can refer to the vendor's website through the provided weblink.