This is a 12.5 mm diameter Plano-Convex lens, manufactured by Qioptiq Photonics, featuring a focal length of 20mm and made from N-BK7 glass. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
The lens's geometry includes a thickness of 1.4mm at the edge and 3.5mm at the center. The inner and outer radii are both zero, indicating a simple spherical shape. The lens's design is mounted, which means it is ready for immediate use in optical systems.
According to the vendor's website, this item is currently in stock. The website link is provided for easy access and reference. The lens is a spherical type, which is a common choice for many optical applications due to its simplicity and versatility.
Please note that the lens is designed for a wavelength of 588nm. This specificity is important to consider when selecting a lens for your application, as different wavelengths may require different lens types or coatings.