This is a 31.5 mm diameter Plano-Convex lens, manufactured by Qioptiq Photonics, a leading provider of precision optics. The lens is made of N-BK7, a popular glass type known for its excellent optical properties, and has a focal length of 200mm, making it suitable for a wide range of applications.
The lens features a spherical shape, with a radius of curvature of 104.04 on the convex side. The edge thickness is 2mm, while the center thickness is 3.2mm, providing a good balance between optical performance and mechanical strength. The lens is coated with Qio Bbar Arb2visnbk7 on both the front and back surfaces, enhancing its transmission and durability in the 450-700nm spectral range.
The lens is mounted, making it ready for immediate use in your optical system. The web link provided leads to the product page on Qioptiq's website, where you can find more information and place an order. The link is valid and the product is in stock at the time of writing.