The invention relates to the technical field of
laser engraving, in particular to a method for
engraving a miniature two-dimensional code in
glass laser. The method for
engraving the miniature two-dimensional code in the
glass laser comprises the following steps that a DATAMATRIX two-dimensional code encoding method is used for generating an initial two-dimensional code drawing file of a circle pattern; and a single-point mode two-dimensional code drawing file composed of a plurality of independent single points is generated according to the initial two-dimensional code drawing file of the circle pattern;
processing delay parameters are arranged behind the each
single point of the single-point mode two-dimensional code drawing file, and a target two-dimensional code drawing file is generated; a glass sample is located through a coaxial
CCD camera, and the position to be processed is calculated; and an
optical path is adjusted to enable the focused spot size of a
laser beam to be smaller than a calibration value, a focus point of the
laser beam is moved to the position to be processed inside the glass sample, and the two-dimensional code
processing is carried out according to the target two-dimensional code drawing file. The tailing phenomenon caused by a
galvanometer when the action time of a
picosecond laser is extremely short is effectively prevented, and two-dimensional small-size engraving is enabled to be possible.