The Zohar, Chapter “Miketz (At the End),” Item 61: Nukva is called, “night,” and she is a mirror, which means illumination of Hochma. And since there is no illumination of Hochma in any Partzuf besides her, Nukva is called, “mirror” or “vision.” Accordingly, the name “night” is vision.
Nukva is the desire to be filled that is capable of becoming similar to the Creator, the desire to bestow, because it sees Him before it. All our desires rise to Nukva, to Malchut of the World of Atzilut.
If these desires are directed at bestowal and willing to unite with the other souls, they enter Malchut of the World of Atzilut and unite with each other. In this manner, they become similar to Zeir Anpin of the World of Atzilut and a connection emerges whereby Zeir Anpin and Malchut are in adhesion.
Nukva becomes similar to Zeir Anpin, or stated differently, the creature becomes similar to the Creator. When the creature prepares itself properly, the Creator is imprinted in it, and thus, creation becomes His “mirror.” For this reason, it is called a “photograph of the Creator.”
When our desire to receive pleasure takes on the same exact form as that of the Creator (in other words, when it becomes bestowing), it is called a “photograph of the Creator.”