Patent ID: 8313428

Claim:
A side-viewing endoscope structure, comprising: a front tubular section including a tube, a reflector holder, and a reflector; the tube including a main body and a coupling portion; the main body being an elongated hollow shell having a beveled rear open end and a front open end provided on an upper side thereof with a first aligning and engaging portion; and the coupling portion being a ring-shaped sleeve correspondingly connected to a rear lower side of the beveled rear open end of the main body; the reflector holder being axially and immovably fitted in the main body of the tube with a beveled rear end wall of the reflector holder flushing with the beveled rear open end of the main body of the tube; and the reflector holder being provided on one side of an outer wall surface thereof with a second aligning and engaging portion corresponding to the first aligning and engaging portion on the main body of the tube; and the reflector being correspondingly arranged on the beveled rear end wall of the reflector holder; an intermediate tubular section being a long tubular shell having a front and a rear open end; a length of the intermediate tubular section at the front open end having a reduced outer diameter to match an inner diameter of the coupling portion of the tube, so as to fitly insert into the coupling portion and become fixed thereto; and the intermediate tubular section being provided on one side of a peripheral wall thereof with a through opening to serve as a light window; a rear cap being an enclosure having a front open end for correspondingly extending into the rear open end of the intermediate tubular section; and the rear cap having a rear wall that is provided with a cable hole; and an optical imaging unit being axially extended into and fixedly located in the intermediate tubular section and the rear cap; the optical imaging unit including a flexible printed circuit board, a camera lens located at a front end of the flexible printed circuit board to correspondingly immovably fit in the front open end of the intermediate tubular section, a light source component located on the flexible printed circuit board behind the camera lens to correspond to the light window provided on the intermediate tubular section, and a cable for transmitting images connected to a rear part of the flexible printed circuit board and rearward extended through the cable hole on the rear cap.