TV observation system for endoscopes

摘要

A TV observation system for endoscopes has an illumination system including a light source for emitting light to illuminate an object and a light transmitting section for transmitting the light from the light source to the distal end of an endoscope. The light transmitting section is constructed with a single fiber and satisfies a condition:&PHgr;1>&PHgr;2where &PHgr;1 is the area of the entrance end of the single fiber and &PHgr;2 is the area of the exit end thereof.