Lens Maker's Formula

Lens Maker's Formula calculates the focusing ability (focal length) of a lens based on its shape and the materials used. It considers the curvature of the lens surfaces and the refractive index (how much the material bends light). Essentially, it predicts how strongly a lens will bend light to focus images. A lens with more curved surfaces or made of materials with a higher refractive index bends light more sharply, resulting in a shorter focal length. This formula helps optical designers create lenses with specific focusing properties by understanding how shape and material influence light behavior.