fiber light cone by the diameter of 5 ~ 6 μ m of optical fiber and the end of the regular arrangement of uniform tension of each fiber image transmission device into a cone, with the image zoom in and out of role widely used in military, criminal investigation, aerospace, medical and other fields of the CCD coupled image intensifier coupled photomultiplier tube coupled ray film and medical care, as well as high-definition television and advanced imaging applications, office equipment images.