This is the PLCX-25.4-58.2-SF11, a 25.4 mm diameter Plano-Convex lens made from N-SF11 Schott glass. This lens is sourced from CVI Laser Optics and is a part of their extensive catalog of optical elements. The lens is uncoated and designed for use with a wavelength of 587.6 nm.
The lens features a plano-convex geometry, meaning one side is flat (plano), and the other side is curved (convex). The curvature of the convex side has a radius of 58.2 mm. The lens has a thickness of 2.4 mm at the edge and 3.8 mm at the center. The effective focal length (EFL) of this lens is 76 mm.
The PLCX-25.4-58.2-SF11 is a laser grade lens, indicating it is designed to withstand high power laser applications. The N-SF11 Schott glass from which it is made is known for its excellent optical properties, including high transmittance and low auto-fluorescence.
The lens is in stock and available for immediate purchase. More detailed information about this lens, including its full specifications, can be found in the linked datasheet.