Optics - LensesOptical lenses are devices that are used to focus or disperse light. They are typically made of glass or plastic, and are shaped in such a way that they can bend or refract light in a specific way. Optical lenses are used in a wide range of applications, including in cameras, telescopes, microscopes, and other optical instruments. They are an essential part of many optical systems, and are used to focus light to create clear and accurate images. Optical lenses come in many different shapes and sizes, and can be designed for specific applications, such as telephoto lenses for cameras or objective lenses for microscopes. Overall, optical lenses are a key component of many optical systems, and are essential for producing clear and accurate images.