@Draco Magnus said
"Porta Lucis inspired by Portae Lucis?"
"Gate of Light" is a common term in Qabalah, whether in English or other language. I don't know that any version of the Hebrew text by Gikatilla was known by him (or available in any form), but the tradition of the title was certainly relevant.
The Gates of Light (plural) is enormously influential on our tradition, though. Aside from being the oldest available work examining the Sephiroth in detail - incorporating many core principles such as the Divine Names and that Y.H.V.H. is the basis of the Tree structure - it also likely is the origin of the X=Y grade structure (e.g., 5=6) since the chapters have titles like "The Fifth Gate - The Sixth Sphere."
Crowley's received work, "The Gate of Light" - note the singular in the title - is named after a traditional title of Malkuth.
If you are interested in Sha'are Orah, its author, and its historical context, you might want to read the Wikipedia article on Rabbi Gikatilla:
en.wikipedia.org/wiki/Gikatilla
To put him in context, he wrote this work about half a century or more before the Zohar, and just a little later than The Book of Contenmplation. He was from the same general Qabalistic community as the latter work, which was the codification of the philosophy and vocabulary that allowed the writing of The 32 Paths of Wisdom, which was probably pretty contemporary to Gikatilla's core work.