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, making it a negative lens. The radius of curvature for the first surface (r1) is -50.481 mm.
The lens is made of UVFS material with the ID 'uvfs mal- 1965'. It is designed to work with a wavelength of 355 nm. The lens comes with a coating on both the front and back surfaces. The front coating is 'qio bbar arb2visnbk7', and the back coating is also 'qio bbar arb2visnbk7'. This coating enhances the lens's performance in specific wavelength ranges.
The lens is currently in stock and available for purchase on the Qioptiq Photonics website. The weblink provided leads directly to the product page for easy access.