This is a 31.5 mm diameter Plano-Convex lens, manufactured by Qioptiq Photonics, featuring a focal length of 500mm. The lens is made of N-BK7, a popular optical glass from Schott, known for its excellent optical properties and high transmittance in the visible spectrum.
The lens has a spherical geometry, with a curvature radius of 259.476mm on the convex side. The edge thickness is 2mm, while the center thickness is 2.5mm, providing a robust structure and ensuring high-quality imaging. The lens is coated with Qio AL RALVIS AOI 45 on both the front and back surfaces, enhancing its durability and light transmission capabilities.
The lens is mounted, making it ready for immediate use in various applications. The web link provided leads to the product page on Qioptiq's website, where you can find more information and check the current availability of the lens.