从“灵晕”到“辩证意象”，是瓦尔特·本雅明美学思想转变的关键线索。本雅明反复辨析了“灵晕”的内涵、发生条件和消逝原因。就艺术问题而言，灵晕的发生与“美的表象”、迷醉体验和事物“原真性”关系密切。其关键在于上述要素保证了审美主体与审美对象之间的“本质距离”。然而，机械复制技术恰恰破坏了上述条件，导致灵晕消逝。不过，随着他的思想基础逐渐从犹太神学转向马克思主义，本雅明对灵晕的态度亦从惋惜其消逝，转变为批判其意识形态特征。他进而探讨了“后灵晕艺术”的可能形态，即以辩证唯物主义为认识论基础的“辩证意象”。

The transition from "aura" to "dialectical image" is a key to trace the trajectory of Walter Benjamin's aesthetic thoughts. Benjamin repeatedly specified the connotations, the prerequisites for emergence and the reasons for the disappearance of "aura." As far as artistic problems are concerned, the appearance of aura is closely related to "the semblance of beauty", trance experience and authenticity of things, and the key to this is that the aforementioned factors could ensure the essential distance between the aesthetic subject and the aesthetic object. However, these conditions do not stand under mechanical reproduction technology and aura is destroyed and disappears. As Benjamin's standpoint of thinking gradually shifted from Jewish theology to Marxism, his attitude towards aura also changed from that of lamenting its disappearance to that of criticizing its ideological characteristics. To further on this, he began to explore the possible form of "post-aura art", i.e., the dialectical image epistemologically based on dialectical materialism.