This is a Plano-Convex Lens, a type of spherical lens, sourced from Standa. The lens has a circular base shape and is designed for use with a wavelength of 355 nm. The lens is uncoated, meaning it does not have any additional layers to alter its optical properties.
The lens has a diameter of 12.7 mm and a thickness at the edge of 3.4 mm. The thickness at the center of the lens is slightly greater at 3.5 mm. The effective focal length (EFL) of the lens is 350 mm. The radius of curvature for the curved face of the lens is 166.625 mm, while the inner and outer radii are both 0 mm, indicating a plano surface on the opposite side.
The lens is made from UVFS Mal-1965, a material specifically designed for use with ultraviolet light. This makes it suitable for a variety of applications that involve this part of the spectrum.
The item data indicates that this lens is in stock and available for purchase. For more information, including pricing and compatibility with specific systems, please refer to the vendor's website at http://www.standaphotonics.com/lenses/plano-convex-lenses.php.