Throwing type optical fiber image sensor and use method thereof

The invention discloses a throwing type optical fiber image sensor and a using method thereof, the throwing type optical fiber image sensor comprises a lens assembly and a beam splitter which are sequentially arranged from outside to inside in a U-shaped shell, the arrangement directions of the lens assembly and the beam splitter are both perpendicular to the length direction of the U-shaped shell, and an LED lamp is further vertically arranged on the outer edge of the U-shaped shell; the lens assembly comprises lenses located on the lens plate, through holes used for containing optical fibers are evenly distributed in the beam splitting plate from outside to inside, the number of the through holes corresponds to the number of the lenses, an optical fiber tail connected with the optical fibers is arranged at the tail end of the U-shaped shell, and the optical fiber tail is connected with an image collecting device. The system is simple in structure, low in cost and convenient to detect, does not need an expen