This is the BICC-25.4-26.1-UV, a laser-grade concave-concave spherical lens with a diameter of 25.4 mm, sourced from CVI Laser Optics. The lens is designed for use with a wavelength of 587.6 nm and is uncoated.
The lens features a center thickness of 2 mm and an effective focal length (EFL) of -25 mm. The first radius of curvature (R1) is -26.1 mm, while the second radius of curvature (R2) is 26.1 mm. The lens is circular, with no specified inner or outer radius.
The lens is made of UVFS material, specifically identified as "UVFS mal- 1965" in the material ID. This material is often used in laser applications due to its high transmission and damage threshold.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. This can be beneficial in certain applications where the user wants to control the coating themselves or where a coating may interfere with the application.
The lens is currently in stock and more information about it can be found in the provided weblink.