The 111-1218E is a double-convex lens, also known as a biconvex lens, sourced from EKSMA Optics. This lens is characterized by its spherical geometry, with a diameter of 25.4 mm and a thickness that varies from 2.3 mm at the edge to 4 mm at the center. The lens has a focal length (EFL) of 100 mm, making it suitable for a wide range of optical applications.
The lens is made from UVFS MAL-1965, a material specifically designed for use in the ultraviolet spectrum at a wavelength of 355 nm. This material ensures high transmittance and low absorption in the UV range, making it ideal for applications such as UV microscopy, spectroscopy, and other UV-based technologies.
The 111-1218E lens is uncoated, meaning it does not have any additional layers applied to its surfaces to alter its optical properties. This can be beneficial in certain applications where a natural lens surface is desired, or where the introduction of a coating could potentially introduce unwanted artifacts or distortions.
Please note that the lens is circular in base shape, and it does not have any inner or outer radius specified, indicating that it is a simple, double-convex lens without any additional curvatures or features.
For more information, including pricing and availability, please refer to the vendor's website at http://eksmaoptics.com/optical-components/lenses/uv-fs-biconvex-lenses/.