Proposal of laser assisted hot embossing technology for glass

An embossing process in which a glass substrate is pressed by a mold and the mold is heated by laser is proposed. To demonstrate the process, an experimental setup is constructed. The setup can perform embossing and measure the embossing states, such as the process temperature and mold displacement. It is shown that pulsed laser heating has better processing efficiency and a smaller heat affected zone than continuous laser heating. The embossed shape accuracy is discussed by comparing the embossed shapes resulting from pulsed laser heating and continuous laser heating.