This is a Plano-Convex Lens, a type of spherical lens, sourced from Standa. The lens has a base shape of a circle and is designed for use in a variety of optical applications. The lens is made from CAF2 (Calcium Fluoride) material, specifically the mal-1963 variant, which is known for its excellent optical properties.
The lens has a diameter of 25.4 mm and a thickness at the edge of 3 mm. The thickness at the center of the lens is 5.7 mm. The effective focal length (EFL) of the lens is 75 mm. The radius of curvature for the first surface (R1) is 31.37 mm, while the inner and outer radii are both 0 mm.
The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. This can make it more susceptible to environmental factors such as dust and moisture, but it also means that it does not introduce any additional chromatic aberration.
The lens is designed to operate at a wavelength of 2940 nm. It is currently in stock and available for purchase, as indicated by its valid weblink status. For more information, please refer to the vendor's website.