This is a Plano-Convex Lens, type 38-587, sourced from Edmund Optics. The lens has a circular base shape with a diameter of 12.5mm and a thickness of 1.23mm at the edge, increasing to 2.2mm at the center. The effective focal length (EFL) of this lens is 40mm, making it suitable for a variety of optical applications.
The lens is made from n-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The front and back surfaces of the lens are coated with YAG-BBAR, a type of anti-reflection coating that operates within the 500-1100nm wavelength range. This coating reduces surface reflections, increasing the amount of light transmitted through the lens, and enhancing overall system performance.
The lens's geometry includes an inner radius of 0mm and an outer radius of 0mm, indicating a simple spherical shape. The front radius of curvature (R1) is 20.67mm, and the back focal length (BFL) is 38.55mm.
According to the vendor's website, this item is currently in stock, making it readily available for immediate use.