The term "X-ray optics" is used to describe both, the lore of the behaviour of high energy photons, and devices influencing e.g. the direction, spectrum, intensity or phase of X-rays.
This site explains how to generate and detect X-rays and it illustrates some aspects of X-ray physics. There is a wide range of X-ray optical devices. You will find to understand the function and use of many types of X-ray optics. It might help you to find out, what kind of X-ray optics is the most suitable for your own purposes. The diagram below gives a rough classification of X-ray optics based on the effects used in the optics: