Array mechanism of laser spot projector with adjustable light spot density

The invention belongs to the engineering measurement technology and specifically discloses an array mechanism of a laser spot projector with an adjustable light spot density. The array mechanism comprises a cylindrical base, a rear end cover, a front end cover, a force applying rod and an auxiliary supporting ring. Circular-ring array blocks which are arranged into circles around the center of the rear end cover are arranged on the outer end surface of the rear end cover; a ring-shaped slot is formed between adjacent circular rings; a laser device fixing hole is formed in the center of the circular-ring array blocks. The circular-ring array blocks which are arranged into circles are designed on the rear end cover made of an elastic material, and the ring-shaped slots are formed among the circles, so that elastic deformation formed by the ring-shaped slots is generated between the circular-ring arrays when the force applying rod drives the rear end cover to move, and a normal of each circular hole generates deflection for a certain angle, thereby generating or converging or diverging a laser spot matrix on the target to generate a laser spot array adaptive to a target dimension size, and solving a problem that characteristic spots cannot be extracted under a high-brightness background.