Polarization,as a fundamental nature of light and an additional controlling freedom,has been used to create the vector light fields with spatially inhomogeneous states of polarization,which we called vector optical field (VOF).Due to the unique features,such as the sharper focal spot and the longitudinal component when tightly focused by a microscopic objective with a high NA,the vector light fields offer an opportunity and possibility for expending functionality of the existing photonic/optical techniques and systems and for developing novel applications in various realms.