63-540 10mm Dia. x 40mm FL; Uncoated; Double-Convex Lens

The 63-540 10mm Dia. x 40mm FL is an uncoated, double-convex lens sourced from Edmund Optics. This lens is a spherical lens with a base shape of a circle, making it suitable for a wide range of optical applications. The lens has a diameter of 10mm and a thickness at the edge of 1.89mm, while the thickness at the center is 2.5mm. The effective focal length (EFL) of this lens is 40mm, which is the distance over which a collimated beam of light is focused to a spot, or vice versa.

The lens features a double-convex geometry, with the first radius of curvature (R1) being 40.91mm and the second radius of curvature (R2) being -40.91mm. This geometry is designed to minimize spherical aberration, a common optical issue that can lead to distorted images. The back focal length (BFL) of this lens is 39.16mm, which is the distance from the rear surface of the lens to the image plane when the lens is focused at infinity.

The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and high damage threshold. The lens is designed to work at a wavelength of 587.6nm, which is the wavelength of the green line in the visible spectrum.

Please note that this lens is uncoated. Coatings are often applied to lenses to reduce reflection, increase transmission, or provide other desirable optical properties. However, this lens does not have any coatings, which may affect its performance in certain applications.

For more information about this lens, including its availability and pricing, please refer to the provided web link.