Optical devices are instruments that utilize light to enhance human vision or capture images. Common examples include cameras, microscopes, and telescopes, each designed for specific applications, from scientific research to everyday photography. These devices work by manipulating light through lenses and mirrors to produce clear images. In addition to enhancing vision, optical devices play a crucial role in various fields such as medicine, astronomy, and manufacturing. For instance, endoscopes allow doctors to view internal organs, while binoculars help birdwatchers observe wildlife from a distance. The advancement of optical technology continues to revolutionize how we see and understand the world around us.