This is a Plano-Concave Lens, type of Spherical Lens, offered by Standa, a renowned vendor in the optical industry. The lens has a circular base shape and is constructed from UVFS MAL-1965 material, specifically designed for use with a wavelength of 355 nm.
The lens has a diameter of 25.4 mm and a thickness that varies from 4 mm at the edge to 3.8 mm at the center. It features an effective focal length (EFL) of -750 mm, making it suitable for applications that require a concave lens. The lens's inner and outer radii are both 0, indicating a plano surface on one side and a concave surface on the other.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties or protect it from environmental factors. This may be suitable for applications where coating is not required or preferred.
According to the vendor's website, this lens is currently in stock, ensuring quick delivery for your optical system needs. For more information, you can visit the vendor's website using the provided weblink.