First of all, there is no patent right for scientific theorems. We can't say that we invented theorems, but discovered them.
Now that you have found a new theorem, please describe your theorem with an appropriate mathematical model and prove its authenticity from a theoretical point of view.
Then, describe the function of your formula theorem, that is, how your theorem can be applied to other theories or practices.
Write the above content into a paper, pay attention to the format, and mail it to authoritative academic journals.
Because you didn't describe the subject of your new theorem, it seems to be in the field of optical physics just from your name. You can submit it in the log below.
China Journal of Optics