| 摘要 |
<p>The invention relates to a method and an apparatus for the selective creation of a decor on hollow, axially symmetrical articles. A laser beam is acting from the interior of a hollow twin layer article through an internal, sufficiently permeable layer to an external, highly absorbent layer in order to cause a phase change of the external layer. The corresponding apparatus comprises a laser generating a laser beam (1), a lens (5), a mirror (6) provided in the axis of symmetry (3) of the article to be decorated and also driving means for the translatory movement of the lens (5) and of the mirror (6) and for the rotational movement of the mirror (6), and is provided with a microcomputer and/or an optical pick-up device of the sample of the decor for control of creation of the decor. A laser beam (1) with a wavelength of 0,5 to 2,0 mu m is used for this purpose. The concept of the invention can be utilized in the glass industry.</p> |
