US Patent 10884250 Apparatus and method for laser beam shaping and scanning

An apparatus and a method for laser beam shaping and scanning. The apparatus includes a digital micromirror device (DMD) including a plurality of micromirrors, configured to receive a first laser beam, adjust an axial position of a focal point of the first laser beam along a moving direction of the first laser beam by controlling a focal length of wavefront of a binary hologram applied to the DMD, and adjust a lateral position of the focal point on a plane perpendicular to the moving direction by controlling a tilted angle of a fringe pattern and a period of fringes of the binary hologram applied to the DMD, wherein the DMD simultaneously functions as programmable binary mask and a blazed grating.