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内窥镜冷光源经光导纤维传导至内窥镜头部供腔内照明。以下介绍冷光源损坏后的再生。冷光源由卤钨灯和聚光镜组成。由于钨丝有一定的使用寿命，因电源电压不稳及少数卤钨灯本身质量问题等原因，卤钨灯经常损坏，需要更换。而购一只欧林巴斯卤镇灯需30O元左右，并且又不能就近购
The endoscope cold light source is conducted through the optical fiber to the end of the endoscope for illumination in the cavity. The following describes the regeneration after the cold light source is damaged. The cold light source consists of a tungsten halogen lamp and a condenser lens. Since tungsten filaments have a certain service life, tungsten halogen lamps are often damaged and need to be replaced due to unstable power supply voltages and quality problems of a few tungsten halogen lamps. The purchase of an Olympus halogen town lamp will cost about 30 yuan, and it will not be available for purchase.