Optical imaging is a technique that uses light to capture images of objects or scenes. It involves the use of various devices, such as cameras and microscopes, to visualize details that may not be visible to the naked eye. This method is widely used in fields like medicine, where it helps in diagnosing conditions through techniques like endoscopy and ultrasound. In addition to medical applications, optical imaging is also important in scientific research and industrial settings. It allows scientists to study materials at a microscopic level and helps engineers inspect products for quality control. Overall, optical imaging plays a crucial role in enhancing our understanding of the world around us.