Optical lens protection device and laser head

The utility model provides an optical lens protection device and a laser head, and the device comprises a lens seat which is provided with a light path for light to pass through in an axial direction in a penetrating manner; the optical lens is arranged in the light path, and the optical lens comprises a light inlet face and a light outlet face in the axial direction; and the first air nozzle is arranged on the lens base, the first air nozzle is communicated with the light path, and an air outlet of the first air nozzle faces the light emitting surface of the optical lens so as to blow air to the light emitting surface. It can be seen that the optical lens protection device can remove the dust attached to the optical lens, and the influence on the laser machining quality is avoided. 本申请提供了一种光学镜片保护装置及激光头，包括：镜座，沿轴向方向贯穿设置有供光线穿过的光路；光学镜片，设置于所述光路内，所述光学镜片沿轴向方向包括有进光面和出光面；以及第一气嘴，设置于所述镜座上，且所述第一气嘴与所述光路连通，所述第一气嘴的出气口朝向所述光学镜片的出光面，以向所述出光面吹气。可看出，本申请的光学镜片保护装置能够清除光学镜片上附着的粉尘，避免影响激光加工的质量。