👉 Lens math is a branch of mathematics that focuses on the properties and behaviors of light rays as they pass through optical lenses, forming images. It combines principles from geometry, trigonometry, and calculus to analyze how lenses manipulate light to converge or diverge rays, creating clear or blurred images. By using mathematical models like the thin lens equation (1/f = 1/v - 1/u, where f is focal length, v is image distance, and u is object distance), lens math quantifies parameters such as magnification, focal length, and image location. This framework is critical in designing lenses for cameras, microscopes, telescopes, and eyeglasses, ensuring precise control over light paths to achieve desired optical outcomes. It bridges theoretical optics with practical applications, enabling engineers and scientists to predict and optimize lens performance based on geometric relationships and physical laws.