This is a G063353322 model Plano-Concave Lens, a spherical lens with a base shape of a circle, sourced from the reputable optical components vendor, Qioptiq Photonics. The lens has a diameter of 22.4 mm and a center thickness of 1.5 mm. The effective focal length (EFL) of this lens is -50mm, making it a negative or diverging lens, which spreads out light rays.
The lens is designed to work within the wavelength range of 450-700nm, which covers the visible light spectrum, and is made of UVFS material with the Mal-1965 ID. The lens's front and back surfaces are coated with Qio Bbar Arb2visnbk7, a broadband anti-reflection coating that enhances transmission and reduces surface reflections.
This lens is mounted, indicating that it is already assembled onto a mechanical structure, making it ready for immediate use in optical systems. The detailed parameters and the valid in-stock status of the weblink suggest that this lens is a readily available option for users in need of a high-quality, reliable optical component.