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 25.4 mm. The center thickness of the lens is 1.5 mm. The effective focal length (EFL) of this lens is -1000mm, making it a negative or diverging lens.
The lens is made of N-BK7, a type of glass commonly used in optical applications due to its excellent optical properties. The radius of curvature for this lens is -523.3 mm on the concave side. The lens does not have an inner or outer radius.
The lens is designed to operate within the wavelength range of 588 nm. It comes with a coating on both the front and back surfaces. The coating is Qio Bbar Arb2nirnbk7, which is specifically designed for this type of lens and wavelength range.
The lens is currently in stock and available for purchase. More information about this lens, including pricing and delivery details, can be found on the Qioptiq Photonics website.