This is a G063033400 18 mm Dia. N-BK7 Mounted Double-Convex Lens, with a focal length (EFL) of 16mm, sourced from Qioptiq Photonics. The lens is spherical in shape, with a base shape of a circle, and is made of N-BK7 Schott glass, a popular material for optical elements due to its excellent optical properties.
The lens has a diameter of 18mm and a thickness at the edge of 1.1mm. The center thickness is 7mm, providing a substantial structure for the lens. The inner and outer radii are both 0, indicating a symmetrical design. The first radius of curvature (R1) is 15.179mm, and the second radius of curvature (R2) is -15.179mm, suggesting a double-convex lens.
The lens is coated with Qio Silver RAGV 45 on both the front and back surfaces, enhancing its performance in specific wavelength ranges. The specified wavelength for this lens is 587.6nm.
According to the vendor's website, this lens is currently in stock, making it readily available for your optical system needs. For more information, you can visit the provided weblink.