These are special incenses which can create a mood In the sense “to see with reverence and devotion,” the term translates to hierophany, and could refer either to a vision of the divine or to being in the presence of a highly revered person. In this sense it may assume a meaning closer to audience. “By doing darshan properly a devotee develops affection for God, and God develops affection for that devotee.”
Darsana (Darshan, Sanskrit: दर्शन) is a Sanskrit term meaning “sight” (in the sense of an instance of seeing or beholding; from a root dṛ “to see”), vision, apparition, or glimpse. It is most commonly used for “visions of the divine,” e.g., of a god or a very holy person or artifact.