Optical fiber guide products, currently applications are mainly used in medical equipment. It 's a kind of fiber made of glass or plastic which can be used as a photoconductive tool .Optical fiber is mainly according to the total reflection of light in the fiber, the external light source the light through the optical fiber bundle into the inner side, illuminate the human body which position needs to be checked . The lesion image of the observed organ in the body was then transmitted out of the body through the optical fiber.
Optical fiber has been widely used in medicine, such as endoscope, optical fiber diagnosis system, optical fiber therapy tool and optical fiber communication system in large hospitals.