This is a Plano-Concave lens, a type of spherical lens, sourced from Qioptiq Photonics. The lens has a diameter of 10 mm and a center thickness of 1 mm. The effective focal length (EFL) of this lens is -10 mm, making it a negative lens.
The lens is made of N-BK7, a popular glass type in the optical industry, known for its excellent optical properties. The lens is coated with qio bbar arb2nirnbk7 on both the front and back surfaces, which enhances its performance in the spectral range of 725-1050 nm.
The lens's geometry is such that it has a concave surface with a radius of curvature of 5.168 mm and a flat surface. The inner and outer radii are both zero, indicating that the lens does not have any peripheral curvature.
This lens is available for purchase on the Qioptiq Photonics website, and as per the latest information, it is in stock. For more detailed information, you can visit the provided weblink.