Lens design is the process of creating optical lenses that focus light to form clear images. This involves selecting materials and shapes that determine how light bends when it passes through the lens. Designers use mathematical models to predict how different lens configurations will affect image quality, including factors like distortion and aberration. The goal of lens design is to optimize performance for specific applications, such as in cameras, glasses, or microscopes. Advanced software tools help designers simulate and refine their ideas, ensuring that the final product meets the desired specifications for clarity and precision in various lighting conditions.