Both the work of Carl Jung (CW 9ii) and Vedanta (Adi Shankara and the Upanishads) agree: the deity image represents the inner Self. In Vedanta, the deity image represents the innermost Self (Ātman)
In my last post, titled Fires of knowledge: Ashes of wisdom, I spoke of ash as a symbol of Shiva, and thus of the supreme Self. In that post, I drew from a passage from the Brahmanda Purana. In this post, I am going to share more from the Brahmanda Purana (Chapter 27). In the story, Shiva makes a strong statement concerning his own nature, and thus the nature of the supreme Self.
In Symbols of Transformation, Carl Jung speaks of the ‘cosmic man’, drawing upon a passage from the Shvetashvatara Upanishad:
“Without feet, without hands, he moves, he grasps; eyeless he sees, earless he hears; he knows all that is to be known, yet there is no knower of him. Men call him the Primordial Person, the cosmic man. Smaller than small, greater than great ….” (cited in CW5, para. 182)
In the above image, we see a paining of Surya, the sun God, from the 19th Century. Surya is seated on his chariot led by a horse with seven heads. He is surrounded by attendants and the multitudes praise him. It is said that Surya is the eye of the cosmos. 
In images of the cosmic person, Surya is one the eyes, contrasting with the moon in the other eye, representing the solar and lunar aspects of both the cosmos and psychic life.