High resolution microfocus X-ray tube (up to 0.5μm JIMA resolution) produced by X-ray WorX GmbH, Germany, combines with the unique objective coupling technology, based on optical secondary magnification, has the imaging magnification several times than geometric magnification and optical magnification. Even at a large distance from the X-ray source, the sample can still obtain extremely high resolution, realizing high resolution imaging from large working distance.