There are two main imaging principles for endoscopes: optical imaging and electronic imaging. Optical imaging uses optical elements such as lenses and prisms to project an image of the internal cavity onto an observer or monitor. Electronic imaging uses electronic components such as CCDs or CMOS sensors to convert the image of the internal cavity into electronic signals, which are then displayed on a monitor.
Endoscopes have a wide range of applications in the medical field, mainly divided into two categories: diagnostic and therapeutic. In the diagnostic field, endoscopes can be used to examine organs in multiple systems, including the digestive tract, respiratory tract, ear, nose and throat, gynecology, urology, and joints. In the therapeutic field, endoscopes can be used for endoscopic surgery, treatment, and adjuvant therapy.
