Related Terms of Lenses Before discussing lens and their properties and application, one should be familiar with these terms. Refractive Index Refractive index is a ratio of the speed of light when it passes through the vacuum to its values when it passes through a specific medium. where c is

Lens A lens is a fundamental element of optics that transmits the light (electromagnetic waves in the visible domain) and focuses/disperses the light. The convex lens focuses the light to form an image, whereas a concave lens is used to disperse the light. The lens is usually made from lossless