This is a PLCC-25.4-103.0-C laser grade plano-concave lens, sourced from CVI Laser Optics. The lens has a diameter of 25.4 mm and a center thickness of 3.4 mm. The effective focal length (EFL) of this lens is -200mm, making it a concave lens. The radius of curvature (R1) is -103mm, and the inner and outer radii are both 0mm.
The lens is made of N-BK7 Schott glass, a popular material for laser applications due to its excellent optical properties. The wavelength for this lens is 588nm. The lens does not come with any coating, as indicated by the empty "coating" field in the item data.
For more detailed information about this lens, including its full specifications and a link to the vendor's catalog, please refer to the item data provided. The link to the catalog is valid and indicates that the lens is in stock.