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本文指出散射物体的全息图片是由大量基元全息图片构成的，基元全息图片除正常的全息成像外，还由于基元全息图再现子球面波的光束角宽度很小，因而可以通过小孔成像原理，在观察屏上形成一个倒立实像。宽激光束和细激光束再现全息图象的区别，主要就是成像时所包含的基元全息图片的多和少的问题，在此基础上解释了用宽激光束和细激光束再现全息图象的一系列的特点和区别，以及它们的过渡关系。
In this paper, we point out that the holographic image of the scattering object is composed of a large number of elementary holographic images. In addition to the normal holographic imaging of the elementary holographic image, the beam angle width of the elementary spherical holographic image is very small, Imaging principle, in the observation screen to form an inverted real image. The difference between a wide laser beam and a fine laser beam for reproducing a hologram image is mainly the problem of a large and a small number of elementary hologram images contained in the image formation. On the basis of this, a description is given of reproducing a hologram image using a wide laser beam and a fine laser beam A series of features and differences, as well as their transitional relationship.