KPX621 25.4 mm Dia. x 450 mm FL; Uncoated; Plano-Convex Lens

The KPX621 is a Plano-Convex lens, a type of spherical lens with a single curved surface and a flat surface. This lens is sourced from MKS/Newport, a renowned vendor in the optical industry. The lens has a circular base shape and a diameter of 25.4 mm, making it suitable for a wide range of optical applications.

The KPX621 has a thickness of 3 mm at the edge and 3.35 mm at the center. It boasts an effective focal length (EFL) of 450 mm, which is the distance from the center of the lens to the focal point when the lens is used in air. The lens's back focal length (BFL) is 447.8 mm, which is the distance from the rear surface of the lens to its focal point.

This lens is made of n-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens is uncoated, meaning it does not have any anti-reflective or other coatings. This can be advantageous in certain applications where the natural properties of the glass are desired.

The KPX621 is designed for use at a wavelength of 546.1 nm. This wavelength falls within the visible light spectrum, making this lens suitable for applications involving visible light.