Cold light source LED is a special type of LED that produces very bright light and almost no heat. This makes it very suitable for endoscopes in medical applications, as it can provide clear lighting while reducing the discomfort of heat to patients and operators. Endoscopes require sufficient bright lighting to assist doctors in observing and diagnosing the condition. Cold light source LEDs can generate high brightness white light or specific color temperature light to meet different medical needs. In addition, cold light source LEDs have a longer lifespan and lower energy consumption, making them more reliable and energy-efficient in medical environments. The cold light source LED can be transmitted to the front end of the endoscope through fiber optics, enabling it to provide uniform and bright illumination in a narrow space. This design can also reduce heat accumulation at the front end of the endoscope, improve patient comfort, and reduce the risk of thermal damage during surgery. The specific models of LED lights used in medical endoscopes may vary depending on the manufacturer and device design. The following are some common LED lamp models that may be used in medical endoscopes: 3mm LED: This is a smaller LED lamp with a diameter of 3mm. It is commonly used in small medical equipment to provide local lighting.