This is a mounted plano-convex lens from Qioptiq Photonics, with a diameter of 25.4 mm and a focal length of 100 mm. The lens is made of N-BK7, a popular optical glass from Schott, which is known for its excellent optical properties and wide transparency range.
The lens geometry includes a thickness of 2.4 mm at the edge and 4 mm at the center. The front surface has a radius of curvature of 51.212 mm, while the back surface is flat. The lens is coated with Qio Silver RAGV 45 on both the front and back surfaces, which provides high reflectivity and durability.
The lens is designed for use at a wavelength of 588 nm. It is currently in stock and available for purchase on the Qioptiq Photonics website. The lens is spherical in shape and circular in base shape, making it suitable for a wide range of optical applications.