This is a G063353525 Plano-Concave Lens, a spherical lens type with a base shape of a circle. The lens is mounted on UVFS and has 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 -50 mm. The lens's front and back surfaces are coated with Qioptiq's BBAR ARB2NIRNBK7 coating, designed for broadband anti-reflection in the 725-1050nm wavelength range.
The lens's geometry is characterized by its inner radius of 0 mm and an outer radius of 0 mm, with a radius of curvature (R1) of -25.483 mm on the concave side. The lens is made of UVFS material with the material ID "uvfs mal- 1965".
This lens is sourced from Qioptiq Photonics and is currently in stock. For more information, please refer to the vendor's website at https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Plano-Concave-Lenses/Plano-concave-lenses-mounted-fused-silica.html.