Micro lenses are tiny optical devices that focus light in a specific direction. They are often made from materials like glass or plastic and can be found in various applications, including cameras, projectors, and sensors. Their small size allows them to be integrated into compact devices, enhancing their performance without taking up much space. These lenses work by bending light rays to create clear images or improve light collection. Micro lenses are commonly used in technologies such as fiber optics, LED lighting, and photovoltaic cells, where efficient light management is crucial for optimal functionality.