The 47-891-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 20.0mm, is designed for use in the visible light spectrum, specifically between 425-675nm. The lens has a front and back coating of edm vis-0 std curve, which is a standard coating for this type of lens.
The lens has a thickness of 3.32mm at the edge and 4.3mm at the center, with an effective focal length (EFL) of 100.0mm. The radius of curvature for the first surface (R1) is 51.68mm, and the back focal length (BFL) is 97.13mm. The lens does not have an inner or outer radius, indicating that it is a simple plano-convex lens.
The material used in the construction of this lens is n-bk7 schott, a common material for optical lenses due to its excellent optical properties. The lens is designed to be used with a 0-degree angle of incidence, making it suitable for a wide range of optical applications.
According to the vendor's website, the lens is currently in stock, making it readily available for immediate use. The website also provides further technical specifications and application notes for this lens, which can be accessed via the provided weblink.