111-0522E 50.8 mm Dia. x 400 mm FL; Uncoated; Double-Convex Lens

The 111-0522E is a high-quality Double-Convex Lens, sourced from the reputable optical components manufacturer, EKSMA Optics. This lens, with a base shape of a circle, is designed for use in a wide range of optical applications, thanks to its precise geometry and material composition.

The lens boasts a diameter of 50.8 mm, making it suitable for use in systems with a moderate aperture. The thickness at the edge of the lens is 3.4 mm, while the center thickness is 5 mm, providing a robust structure that can withstand typical handling and usage. The effective focal length (EFL) of this lens is 400 mm, which is a common choice for many optical systems due to its versatility.

The 111-0522E lens is made from the well-known optical material, BK7 Schott. This material, also known as Borosilicate Crown Glass, is known for its excellent optical properties, including a high refractive index and low dispersion. The lens is designed for use at a wavelength of 546 nm, which is within the visible light spectrum.

Notably, this lens does not come with any coating. While coatings can enhance the performance of lenses in certain applications, an uncoated lens can be a cost-effective choice for applications where coating is not required or desired.