111-0218E 25.4 mm Dia. x 100 mm FL; Uncoated; Double-Convex Lens

This is a 111-0218E Double-Convex Lens, sourced from EKSMA Optics, a renowned vendor known for its high-quality optical components. The lens is spherical in shape, featuring a base shape of a circle, and is designed for use in a wide range of optical applications.

The lens has a diameter of 25.4 mm and a center thickness of 4 mm, with an edge thickness of 2.4 mm. The effective focal length (EFL) of the lens is 100 mm, making it suitable for applications that require a longer focal length. The first radius of curvature (R1) is 103.1 mm, while the second radius of curvature (R2) is -103.1 mm, indicating a double-convex design.

The lens is made from N-BK7 Schott, a popular optical glass known for its excellent optical properties and wide transmission range. The lens is uncoated, meaning it does not have any additional layers to enhance its optical performance or protect it from environmental factors. However, uncoated lenses can be advantageous in certain applications where specific coatings may interfere with the desired optical effect.

The lens is designed to operate at a wavelength of 546 nm. It is important to note that the performance of the lens can vary depending on the wavelength of light used. Therefore, it is crucial to consider the specific requirements of your application when selecting an optical lens.