A meniscus lens is a simple optical lens made from a single piece of glass, thicker at the center than at the edges, featuring one concave and one convex surface. This design helps to converge or diverge light while reducing spherical aberration compared to simple plano-convex or plano-concave lenses.
Understanding meniscus lenses is important for photographers, optical engineers, and lens designers, as they are often used in cameras, projectors, and other imaging devices. Their shape allows for compact lens designs and improved image quality, making them a fundamental component in various optical systems.