This is a Plano-Concave lens, a type of spherical lens, sourced from Qioptiq Photonics. The lens has a base shape of a circle and a diameter of 22.4 mm. The center thickness of the lens is 1.5 mm, and it has an effective focal length (EFL) of -100 mm. The lens is made of N-BK7, a popular glass type in the optical industry, known for its excellent optical properties.
The lens is designed to operate within the wavelength range of 725-1050 nm, with a central wavelength of 588 nm. It comes with a front and back coating of qio bbar arb2nirnbk7, which is a broadband anti-reflection coating. This coating is specifically designed for N-BK7 glass and operates within the specified wavelength range, reducing surface reflections and improving transmission.
The lens is currently in stock and available for purchase on the Qioptiq Photonics website. For more detailed information and specifications, please refer to the provided weblink.