KPC040 25.4 mm Dia. x -50 mm FL; Uncoated; Plano-Concave Lens

The KPC040 is a plano-concave lens with a diameter of 25.4 mm and a focal length of -50 mm, sourced from the reputable vendor MKS/Newport. This lens is uncoated and features a spherical shape, making it suitable for a wide range of optical applications.

The lens's geometry includes a thickness edge of 5.17 mm and a thickness center of 2.5 mm, providing a balanced structure for efficient light transmission. The base shape is circular, contributing to its versatility in various setups. The inner and outer radii are both 0, indicating a uniform curvature throughout the lens.

The KPC040 is made of n-BK7 Schott material, a popular choice in the optical industry due to its excellent optical properties and high Abbe number. This material is particularly suitable for applications involving visible light, as demonstrated by its wavelength of 589 nm.

The lens's coating is listed as empty, indicating that it is uncoated. This may be ideal for applications where anti-reflective or other specialized coatings are not required. However, users should be aware that uncoated lenses may exhibit higher levels of reflection and lower transmission compared to coated alternatives.