Diaphragm

The utility model relates to a diaphragm which comprises a diaphragm plate body and a diaphragm hole arranged on the diaphragm plate body. The diaphragm holes are regularly arranged on the diaphragm plate body; and the aperture of the diaphragm hole is sequentially increased or decreased along the movement direction. According to the diaphragm plate, the diaphragm holes which are regularly arranged are formed in the diaphragm plate body, and the apertures of the diaphragm holes are sequentially increased or decreased according to the rule, so that different diaphragm holes can be processed by selecting different beam intensities, different materials, different processing areas and different processes, more choices are provided for processing of the materials, and the processing efficiency of the materials is improved. And therefore, the material processing efficiency is improved. 本实用新型涉及一种光阑，包括：光阑板本体以及设置于光阑板本体上的光阑孔；光阑孔规则排列在光阑板本体上；光阑孔的孔径沿运动方向依次增大或减小设置。通过在光阑板本体上设置规则排列的光阑孔，并且光阑孔的孔径按规律依次增大或减小进行排列，从而使得不同的光阑孔可选择不同的