The present research has the objective of deepening the understanding of the role of images in Hans Jonas thought through the reflection of their influence in the experience of apprehension of reality. Since, for Jonas, the anthropological difference lies right in the capacity of humans to relate freely to images. That is, to create and recognize the images as representations of the real, inasmuch as homo pictor inaugurated a new way of relating to the objects by the freedom achieved in the expression of the faculty of the image.In his ethical proposal, Hans Jonas postulates that it is a duty to invoke images that lead humanity to act in accordance with the preservation of the conditions of human existence in the future. From this, arises as necessary the investigation of the significance and the functioning of the images in the arousal of the affects for that purpose. We postulate that, if for Jonas the capacity to produce, recognize and relate to images freely is an attribute of the human being, this means that the author considers the images as executing a fundamental function in our perception of reality and, therefore, in the conception of reality and cosmological vision that condition our actions in the world.