This is a Plano-Convex Lens, a type of spherical lens, sourced from the reputable vendor Standa. The lens is characterized by its circular base shape and is designed for use in a variety of optical applications.
The lens has a diameter of 25.4 mm and a thickness at the edge of 3.4 mm. The thickness at the center is slightly greater at 4 mm. The effective focal length (EFL) of the lens is 300 mm, making it suitable for applications that require a longer focal length.
The lens is made from UVFS Mal- 1965, a material specifically chosen for its optical properties at the wavelength of 355 nm. This material ID suggests that the lens is optimized for use in ultraviolet applications.
Notably, the lens is uncoated. This means that it does not have any additional layers applied to its surface to alter its optical properties. While this may limit its use in certain applications, it can be beneficial in others where a bare lens surface is required.
The lens data indicates that it is in stock and available for immediate use. For more information, including pricing and compatibility with other optical elements, please refer to the vendor's website at http://www.standaphotonics.com/lenses/plano-convex-lenses.php.