A micro lens is a small optical lens designed to focus light on a very small scale. These lenses are often used in applications like camera sensors, fiber optics, and microscopy, where precise light manipulation is essential. Their compact size allows for high-resolution imaging and efficient light collection, making them valuable in various technological fields. Micro lenses can be made from different materials, including glass and plastic, and are typically manufactured using advanced techniques like photolithography. They can be found in devices such as smartphones, digital cameras, and medical instruments, enhancing performance by improving image quality and light transmission.