Objective and be used for optical system of laser material processing

The utility model relates to an objective (1), objective have following characteristic: a optical components, a optical components installs in first objective casing (2) and including at least one first lens (4), wherein, first lens (4) have roughly the same first surface of curvature radius (4A) and second surface (4B) at least, and the 2nd optical components, the 2nd optical components installsin second objective casing (3) and including at least one lens, wherein, first objective casing with second objective casing is connected in connection zone (V) each other to wherein, directly neighbouring in connection zone those lens in the first objective casing do first lens (4). The utility model discloses still relate to the optical system who is used for laser material processing, have thelaser beam source, the laser beam source is used for radiation beam, and be used for will the objective of focusing of beam to the machining plane. 本实用新型涉及种物镜(1)，所述物镜具有以下特征：第光学组件，所述第光学组件安装在第物镜壳体(2)中并且包括至少个第透镜(4)，其中，所述第透镜(4)至少具