Laser module focusing piece and laser engraving device

The embodiment of the utility model provides a laser module focusing piece which comprises a base body contact surface and a focal length adjusting surface arranged opposite to the base body contact surface, and the focal length adjusting surface is a multi-step surface and comprises a plurality of step surfaces which are sequentially arranged in the first direction and have the distance from the base body contact surface gradually reduced. The laser module focusing piece is a structural piece independent of the laser module, a precise optical structure and matched optical adjusting software do not need to be arranged, and the cost is greatly reduced; and the structure of the laser module is simpler, and the service life is prolonged. The utility model further discloses a laser engraving device adopting the laser module focusing piece. 本申请实施例提供了一种激光模组调焦件，包括基体接触表面及与所述基体接触表面相对设置的焦距调节表面，所述焦距调节表面为多级阶梯表面，包括沿第一方向依次排列的与所述基体接触表面距离逐级减小的多个阶梯面。本实用新型的激光模组调焦件为独立于激光模组的结构件，无需设置精密的光学结构和配套的光学调节软件，成本大大降低；而且激光模组的结构会更加简单，延长使用寿命。