This product is a Plano-Concave Spherical Lens, sourced from the reputable vendor Laser Components. The lens has a base shape of a circle and is designed for use with a wavelength of 248 nm. The lens is uncoated, which means it does not have any additional layers to enhance its performance or protect it from environmental factors.
The lens has a diameter of 25.4 mm and a thickness at the center of 2 mm. The effective focal length (EFL) of the lens is -100 mm, which indicates that it is a diverging lens. The radius of curvature for the first surface (R1) is -51.5 mm, and both the inner and outer radii are 0 mm.
The lens is made of UVFS material with the ID MAL-1965. According to the vendor's website, this item is currently in stock. The website also provides a datasheet with more detailed specifications and technical information.