Adjustable optical prism

The utility model discloses an adjustable optical prism, which comprises a mounting plate, a prism and a prism fixing plate fixed around the prism and is characterized in that the adjustable optical prism also comprises a prism adjusting device, wherein the prism adjusting device is mainly composed of a lateral rotating shaft, a lateral adjusting and fixing base, a longitudinal rotating shaft, an adjusting and fixing plate, a longitudinal adjusting and fixing base, a prism longitudinal rotating driving ball, an return tension spring and a longitudinal adjusting stud; the optical prism can be rotated laterally and longitudinally (namely, around the lateral rotating shaft and the longitudinal rotating shaft) through a screw adjusting hole and a stud adjusting hole on the mounting plate, and is simple and fast to operate; furthermore, the structure among all parts of the entire prism adjusting device is compact, simple and reasonable.