This is a Plano-Convex Lens, type Lens, sourced from the reputable vendor Standa. The lens is spherical in shape and has a Sub Type of Spherical Lens (Plano-Convex). The lens's base shape is circular, and it is uncoated.
The lens has a diameter of 25.4 mm and a thickness edge of 3.6 mm. The thickness at the center of the lens is 4 mm. The effective focal length (EFL) of the lens is 500 mm, and the radius of curvature (R1) is 238.036 mm. The lens does not have an inner or outer radius.
The lens is made of UVFS Mal- 1965 material and is designed to work with a wavelength of 355 nm. The lens's geometry is spherical, and it does not have any coating.
This lens is in stock and available for immediate purchase. For more information, please refer to the vendor's website at http://www.standaphotonics.com/lenses/plano-convex-lenses.php.